diff --git a/scd/app-common.h b/scd/app-common.h
index f16c24087..9240c5f05 100644
--- a/scd/app-common.h
+++ b/scd/app-common.h
@@ -1,302 +1,303 @@
/* app-common.h - Common declarations for all card applications
* Copyright (C) 2003, 2005, 2008 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*
* $Id$
*/
#ifndef GNUPG_SCD_APP_COMMON_H
#define GNUPG_SCD_APP_COMMON_H
#include
#include
/* Flags used with app_change_pin. */
#define APP_CHANGE_FLAG_RESET 1 /* PIN Reset mode. */
#define APP_CHANGE_FLAG_NULLPIN 2 /* NULL PIN mode. */
#define APP_CHANGE_FLAG_CLEAR 4 /* Clear the given PIN. */
/* Flags used with app_genkey. */
#define APP_GENKEY_FLAG_FORCE 1 /* Force overwriting existing key. */
/* Flags used with app_writekey. */
#define APP_WRITEKEY_FLAG_FORCE 1 /* Force overwriting existing key. */
/* Flags used with app_readkey. */
#define APP_READKEY_FLAG_INFO 1 /* Send also a KEYPAIRINFO line. */
#define APP_READKEY_FLAG_ADVANCED 2 /* (gnupg 2.2 only) */
/* Bit flags set by the decipher function into R_INFO. */
#define APP_DECIPHER_INFO_NOPAD 1 /* Padding has been removed. */
/* Flags used by the app_write_learn_status. */
#define APP_LEARN_FLAG_KEYPAIRINFO 1 /* Return only keypair infos. */
#define APP_LEARN_FLAG_MULTI 2 /* Return info for all apps. */
/* List of supported card types. Generic is the usual ISO7817-4
* compliant card. More specific card or token versions can be given
* here. Introduced in 2.2 for easier backporting from 2.3. */
typedef enum
{
CARDTYPE_GENERIC = 0,
CARDTYPE_GNUK,
CARDTYPE_YUBIKEY,
CARDTYPE_ZEITCONTROL
} cardtype_t;
/* List of supported card applications. The source code for each
* application can usually be found in an app-NAME.c file. Introduced
* in 2.2 for easier backporting from 2.3. */
typedef enum
{
APPTYPE_NONE = 0,
APPTYPE_UNDEFINED,
APPTYPE_OPENPGP,
APPTYPE_PIV,
APPTYPE_NKS,
APPTYPE_P15,
APPTYPE_GELDKARTE,
APPTYPE_DINSIG,
APPTYPE_SC_HSM
} apptype_t;
/* Forward declarations. */
struct app_ctx_s;
struct app_local_s; /* Defined by all app-*.c. */
typedef struct app_ctx_s *app_t;
struct app_ctx_s {
struct app_ctx_s *next;
npth_mutex_t lock;
/* Number of connections currently using this application context.
If this is not 0 the application has been initialized and the
function pointers may be used. Note that for unsupported
operations the particular function pointer is set to NULL */
unsigned int ref_count;
/* Used reader slot. */
int slot;
unsigned char *serialno; /* Serialnumber in raw form, allocated. */
size_t serialnolen; /* Length in octets of serialnumber. */
apptype_t apptype;
unsigned int appversion; /* Version of the application or 0. */
cardtype_t cardtype; /* The token's type. */
unsigned int cardversion;/* Firmware version of the token or 0. */
unsigned int card_status;
unsigned int reset_requested:1;
unsigned int periodical_check_needed:1;
unsigned int did_chv1:1;
unsigned int force_chv1:1; /* True if the card does not cache CHV1. */
unsigned int did_chv2:1;
unsigned int did_chv3:1;
struct app_local_s *app_local; /* Local to the application. */
struct {
void (*deinit) (app_t app);
/* prep_reselect and reselect are not used in this version of scd. */
gpg_error_t (*prep_reselect) (app_t app, ctrl_t ctrl);
gpg_error_t (*reselect) (app_t app, ctrl_t ctrl);
gpg_error_t (*learn_status) (app_t app, ctrl_t ctrl, unsigned int flags);
gpg_error_t (*readcert) (app_t app, const char *certid,
unsigned char **cert, size_t *certlen);
gpg_error_t (*readkey) (app_t app, ctrl_t ctrl,
const char *certid, unsigned int flags,
unsigned char **pk, size_t *pklen);
gpg_error_t (*getattr) (app_t app, ctrl_t ctrl, const char *name);
gpg_error_t (*setattr) (app_t app, ctrl_t ctrl, const char *name,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *value, size_t valuelen);
gpg_error_t (*sign) (app_t app, ctrl_t ctrl,
const char *keyidstr, int hashalgo,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen );
gpg_error_t (*auth) (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen);
gpg_error_t (*decipher) (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen,
unsigned int *r_info);
gpg_error_t (*writecert) (app_t app, ctrl_t ctrl,
const char *certid,
gpg_error_t (*pincb)(void*,const char *,char **),
void *pincb_arg,
const unsigned char *data, size_t datalen);
gpg_error_t (*writekey) (app_t app, ctrl_t ctrl,
const char *keyid, unsigned int flags,
gpg_error_t (*pincb)(void*,const char *,char **),
void *pincb_arg,
const unsigned char *pk, size_t pklen);
gpg_error_t (*genkey) (app_t app, ctrl_t ctrl,
const char *keyref, const char *keytype,
unsigned int flags, time_t createtime,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
gpg_error_t (*change_pin) (app_t app, ctrl_t ctrl,
const char *chvnostr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
gpg_error_t (*check_pin) (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
/* with_keygrip is not used in this version of scd but having it
* makes back porting app-*.c from later versions easier. */
gpg_error_t (*with_keygrip) (app_t app, ctrl_t ctrl, int action,
const char *keygrip_str, int capability);
} fnc;
};
/* Action values for app_do_with_keygrip. */
enum
{
KEYGRIP_ACTION_SEND_DATA,
KEYGRIP_ACTION_WRITE_STATUS,
KEYGRIP_ACTION_LOOKUP
};
/* Helper to get the slot from an APP object. */
static inline int
app_get_slot (app_t app)
{
/* Note that this is a similar function of the one in 2.3 which we
* use to make back porting easier. */
if (app)
return app->slot;
return -1;
}
/* Macro to access members in app_t which are found in 2.3 in a linked
* card_t member. */
#define APP_CARD(a) (a)
/*-- app-help.c --*/
unsigned int app_help_count_bits (const unsigned char *a, size_t len);
gpg_error_t app_help_get_keygrip_string_pk (const void *pk, size_t pklen,
char *hexkeygrip,
- gcry_sexp_t *r_pkey);
+ gcry_sexp_t *r_pkey,
+ int *r_algo);
gpg_error_t app_help_get_keygrip_string (ksba_cert_t cert, char *hexkeygrip,
- gcry_sexp_t *r_pkey);
+ gcry_sexp_t *r_pkey, int *r_algo);
size_t app_help_read_length_of_cert (int slot, int fid, size_t *r_certoff);
/*-- app.c --*/
void app_send_card_list (ctrl_t ctrl);
char *app_get_serialno (app_t app);
char *app_get_dispserialno (app_t app, int nofallback);
void app_dump_state (void);
void application_notify_card_reset (int slot);
gpg_error_t check_application_conflict (const char *name, app_t app);
gpg_error_t app_reset (app_t app, ctrl_t ctrl, int send_reset);
gpg_error_t select_application (ctrl_t ctrl, const char *name, app_t *r_app,
int scan, const unsigned char *serialno_bin,
size_t serialno_bin_len);
char *get_supported_applications (void);
void release_application (app_t app, int locked_already);
gpg_error_t app_munge_serialno (app_t app);
gpg_error_t app_write_learn_status (app_t app, ctrl_t ctrl,
unsigned int flags);
gpg_error_t app_readcert (app_t app, ctrl_t ctrl, const char *certid,
unsigned char **cert, size_t *certlen);
gpg_error_t app_readkey (app_t app, ctrl_t ctrl, int advanced,
const char *keyid, unsigned char **pk, size_t *pklen);
gpg_error_t app_getattr (app_t app, ctrl_t ctrl, const char *name);
gpg_error_t app_setattr (app_t app, ctrl_t ctrl, const char *name,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *value, size_t valuelen);
gpg_error_t app_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen );
gpg_error_t app_auth (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen);
gpg_error_t app_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen,
unsigned int *r_info);
gpg_error_t app_writecert (app_t app, ctrl_t ctrl,
const char *certidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *keydata, size_t keydatalen);
gpg_error_t app_writekey (app_t app, ctrl_t ctrl,
const char *keyidstr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const unsigned char *keydata, size_t keydatalen);
gpg_error_t app_genkey (app_t app, ctrl_t ctrl,
const char *keynostr, const char *keytype,
unsigned int flags, time_t createtime,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
gpg_error_t app_get_challenge (app_t app, ctrl_t ctrl, size_t nbytes,
unsigned char *buffer);
gpg_error_t app_change_pin (app_t app, ctrl_t ctrl,
const char *chvnostr, unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
gpg_error_t app_check_pin (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg);
/*-- app-openpgp.c --*/
gpg_error_t app_select_openpgp (app_t app);
/*-- app-nks.c --*/
gpg_error_t app_select_nks (app_t app);
/*-- app-dinsig.c --*/
gpg_error_t app_select_dinsig (app_t app);
/*-- app-p15.c --*/
gpg_error_t app_select_p15 (app_t app);
/*-- app-geldkarte.c --*/
gpg_error_t app_select_geldkarte (app_t app);
/*-- app-sc-hsm.c --*/
gpg_error_t app_select_sc_hsm (app_t app);
#endif /*GNUPG_SCD_APP_COMMON_H*/
diff --git a/scd/app-dinsig.c b/scd/app-dinsig.c
index 84a06fce0..5a2713e6b 100644
--- a/scd/app-dinsig.c
+++ b/scd/app-dinsig.c
@@ -1,574 +1,574 @@
/* app-dinsig.c - The DINSIG (DIN V 66291-1) card application.
* Copyright (C) 2002, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
/* The German signature law and its bylaw (SigG and SigV) is currently
used with an interface specification described in DIN V 66291-1.
The AID to be used is: 'D27600006601'.
The file IDs for certificates utilize the generic format:
Cxyz
C being the hex digit 'C' (12).
x being the service indicator:
'0' := SigG conform digital signature.
'1' := entity authentication.
'2' := key encipherment.
'3' := data encipherment.
'4' := key agreement.
other values are reserved for future use.
y being the security environment number using '0' for cards
not supporting a SE number.
z being the certificate type:
'0' := C.CH (base certificate of card holder) or C.ICC.
'1' .. '7' := C.CH (business or professional certificate
of card holder.
'8' .. 'D' := C.CA (certificate of a CA issue by the Root-CA).
'E' := C.RCA (self certified certificate of the Root-CA).
'F' := reserved.
The file IDs used by default are:
'1F00' EF.SSD (security service descriptor). [o,o]
'2F02' EF.GDO (global data objects) [m,m]
'A000' EF.PROT (signature log). Cyclic file with 20 records of 53 byte.
Read and update after user authentication. [o,o]
'B000' EF.PK.RCA.DS (public keys of Root-CA). Size is 512b or size
of keys. [m (unless a 'C00E' is present),m]
'B001' EF.PK.CA.DS (public keys of CAs). Size is 512b or size
of keys. [o,o]
'C00n' EF.C.CH.DS (digital signature certificate of card holder)
with n := 0 .. 7. Size is 2k or size of cert. Read and
update allowed after user authentication. [m,m]
'C00m' EF.C.CA.DS (digital signature certificate of CA)
with m := 8 .. E. Size is 1k or size of cert. Read always
allowed, update after user authentication. [o,o]
'C100' EF.C.ICC.AUT (AUT certificate of ICC) [o,m]
'C108' EF.C.CA.AUT (AUT certificate of CA) [o,m]
'D000' EF.DM (display message) [-,m]
The letters in brackets indicate optional or mandatory files: The
first for card terminals under full control and the second for
"business" card terminals.
*/
#include
#include
#include
#include
#include
#include
#include
#include "scdaemon.h"
#include "../common/i18n.h"
#include "iso7816.h"
#include "../common/tlv.h"
static gpg_error_t
do_learn_status (app_t app, ctrl_t ctrl, unsigned int flags)
{
gpg_error_t err;
char ct_buf[100], id_buf[100];
char hexkeygrip[41];
size_t len, certoff;
unsigned char *der;
size_t derlen;
ksba_cert_t cert;
int fid;
(void)flags;
/* Return the certificate of the card holder. */
fid = 0xC000;
len = app_help_read_length_of_cert (app->slot, fid, &certoff);
if (!len)
return 0; /* Card has not been personalized. */
sprintf (ct_buf, "%d", 101);
sprintf (id_buf, "DINSIG.%04X", fid);
send_status_info (ctrl, "CERTINFO",
ct_buf, strlen (ct_buf),
id_buf, strlen (id_buf),
NULL, (size_t)0);
/* Now we need to read the certificate, so that we can get the
public key out of it. */
err = iso7816_read_binary (app->slot, certoff, len-certoff, &der, &derlen);
if (err)
{
log_info ("error reading entire certificate from FID 0x%04X: %s\n",
fid, gpg_strerror (err));
return 0;
}
err = ksba_cert_new (&cert);
if (err)
{
xfree (der);
return err;
}
err = ksba_cert_init_from_mem (cert, der, derlen);
xfree (der); der = NULL;
if (err)
{
log_error ("failed to parse the certificate at FID 0x%04X: %s\n",
fid, gpg_strerror (err));
ksba_cert_release (cert);
return err;
}
- err = app_help_get_keygrip_string (cert, hexkeygrip, NULL);
+ err = app_help_get_keygrip_string (cert, hexkeygrip, NULL, NULL);
if (err)
{
log_error ("failed to calculate the keygrip for FID 0x%04X\n", fid);
ksba_cert_release (cert);
return gpg_error (GPG_ERR_CARD);
}
ksba_cert_release (cert);
sprintf (id_buf, "DINSIG.%04X", fid);
send_status_info (ctrl, "KEYPAIRINFO",
hexkeygrip, 40,
id_buf, strlen (id_buf),
NULL, (size_t)0);
return 0;
}
/* Read the certificate with id CERTID (as returned by learn_status in
the CERTINFO status lines) and return it in the freshly allocated
buffer put into CERT and the length of the certificate put into
CERTLEN.
FIXME: This needs some cleanups and caching with do_learn_status.
*/
static gpg_error_t
do_readcert (app_t app, const char *certid,
unsigned char **cert, size_t *certlen)
{
int fid;
gpg_error_t err;
unsigned char *buffer;
const unsigned char *p;
size_t buflen, n;
int class, tag, constructed, ndef;
size_t totobjlen, objlen, hdrlen;
int rootca = 0;
*cert = NULL;
*certlen = 0;
if (strncmp (certid, "DINSIG.", 7) )
return gpg_error (GPG_ERR_INV_ID);
certid += 7;
if (!hexdigitp (certid) || !hexdigitp (certid+1)
|| !hexdigitp (certid+2) || !hexdigitp (certid+3)
|| certid[4])
return gpg_error (GPG_ERR_INV_ID);
fid = xtoi_4 (certid);
if (fid != 0xC000 )
return gpg_error (GPG_ERR_NOT_FOUND);
/* Read the entire file. fixme: This could be optimized by first
reading the header to figure out how long the certificate
actually is. */
err = iso7816_select_file (app->slot, fid, 0);
if (err)
{
log_error ("error selecting FID 0x%04X: %s\n", fid, gpg_strerror (err));
return err;
}
err = iso7816_read_binary (app->slot, 0, 0, &buffer, &buflen);
if (err)
{
log_error ("error reading certificate from FID 0x%04X: %s\n",
fid, gpg_strerror (err));
return err;
}
if (!buflen || *buffer == 0xff)
{
log_info ("no certificate contained in FID 0x%04X\n", fid);
err = gpg_error (GPG_ERR_NOT_FOUND);
goto leave;
}
/* Now figure something out about the object. */
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if ( class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed )
;
else if ( class == CLASS_UNIVERSAL && tag == TAG_SET && constructed )
rootca = 1;
else
return gpg_error (GPG_ERR_INV_OBJ);
totobjlen = objlen + hdrlen;
assert (totobjlen <= buflen);
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if (rootca)
;
else if (class == CLASS_UNIVERSAL && tag == TAG_OBJECT_ID && !constructed)
{
const unsigned char *save_p;
/* The certificate seems to be contained in a userCertificate
container. Skip this and assume the following sequence is
the certificate. */
if (n < objlen)
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
p += objlen;
n -= objlen;
save_p = p;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if ( !(class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed) )
return gpg_error (GPG_ERR_INV_OBJ);
totobjlen = objlen + hdrlen;
assert (save_p + totobjlen <= buffer + buflen);
memmove (buffer, save_p, totobjlen);
}
*cert = buffer;
buffer = NULL;
*certlen = totobjlen;
leave:
xfree (buffer);
return err;
}
/* Verify the PIN if required. */
static gpg_error_t
verify_pin (app_t app,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg)
{
const char *s;
int rc;
pininfo_t pininfo;
if ( app->did_chv1 && !app->force_chv1 )
return 0; /* No need to verify it again. */
memset (&pininfo, 0, sizeof pininfo);
pininfo.fixedlen = -1;
pininfo.minlen = 6;
pininfo.maxlen = 8;
if (!opt.disable_pinpad
&& !iso7816_check_pinpad (app->slot, ISO7816_VERIFY, &pininfo) )
{
rc = pincb (pincb_arg,
_("||Please enter your PIN at the reader's pinpad"),
NULL);
if (rc)
{
log_info (_("PIN callback returned error: %s\n"),
gpg_strerror (rc));
return rc;
}
rc = iso7816_verify_kp (app->slot, 0x81, &pininfo);
/* Dismiss the prompt. */
pincb (pincb_arg, NULL, NULL);
}
else /* No Pinpad. */
{
char *pinvalue;
rc = pincb (pincb_arg, "PIN", &pinvalue);
if (rc)
{
log_info ("PIN callback returned error: %s\n", gpg_strerror (rc));
return rc;
}
/* We require the PIN to be at least 6 and at max 8 bytes.
According to the specs, this should all be ASCII. */
for (s=pinvalue; digitp (s); s++)
;
if (*s)
{
log_error ("Non-numeric digits found in PIN\n");
xfree (pinvalue);
return gpg_error (GPG_ERR_BAD_PIN);
}
if (strlen (pinvalue) < pininfo.minlen)
{
log_error ("PIN is too short; minimum length is %d\n",
pininfo.minlen);
xfree (pinvalue);
return gpg_error (GPG_ERR_BAD_PIN);
}
else if (strlen (pinvalue) > pininfo.maxlen)
{
log_error ("PIN is too large; maximum length is %d\n",
pininfo.maxlen);
xfree (pinvalue);
return gpg_error (GPG_ERR_BAD_PIN);
}
rc = iso7816_verify (app->slot, 0x81, pinvalue, strlen (pinvalue));
if (gpg_err_code (rc) == GPG_ERR_INV_VALUE)
{
/* We assume that ISO 9564-1 encoding is used and we failed
because the first nibble we passed was 3 and not 2. DIN
says something about looking up such an encoding in the
SSD but I was not able to find any tag relevant to
this. */
char paddedpin[8];
int i, ndigits;
for (ndigits=0, s=pinvalue; *s; ndigits++, s++)
;
i = 0;
paddedpin[i++] = 0x20 | (ndigits & 0x0f);
for (s=pinvalue; i < sizeof paddedpin && *s && s[1]; s = s+2 )
paddedpin[i++] = (((*s - '0') << 4) | ((s[1] - '0') & 0x0f));
if (i < sizeof paddedpin && *s)
paddedpin[i++] = (((*s - '0') << 4) | 0x0f);
while (i < sizeof paddedpin)
paddedpin[i++] = 0xff;
rc = iso7816_verify (app->slot, 0x81, paddedpin, sizeof paddedpin);
}
xfree (pinvalue);
}
if (rc)
{
log_error ("verify PIN failed\n");
return rc;
}
app->did_chv1 = 1;
return 0;
}
/* Create the signature and return the allocated result in OUTDATA.
If a PIN is required the PINCB will be used to ask for the PIN;
that callback should return the PIN in an allocated buffer and
store that in the 3rd argument. */
static gpg_error_t
do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
static unsigned char sha1_prefix[15] = /* Object ID is 1.3.14.3.2.26 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
static unsigned char rmd160_prefix[15] = /* Object ID is 1.3.36.3.2.1 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03,
0x02, 0x01, 0x05, 0x00, 0x04, 0x14 };
static unsigned char sha256_prefix[19] = /* OID is 2.16.840.1.101.3.4.2.1 */
{ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05,
0x00, 0x04, 0x20 };
int rc;
int fid;
unsigned char data[19+32]; /* Must be large enough for a SHA-256 digest
+ the largest OID _prefix above. */
int datalen;
(void)ctrl;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
if (indatalen != 20 && indatalen != 16 && indatalen != 32
&& indatalen != (15+20) && indatalen != (19+32))
return gpg_error (GPG_ERR_INV_VALUE);
/* Check that the provided ID is vaid. This is not really needed
but we do it to enforce correct usage by the caller. */
if (strncmp (keyidstr, "DINSIG.", 7) )
return gpg_error (GPG_ERR_INV_ID);
keyidstr += 7;
if (!hexdigitp (keyidstr) || !hexdigitp (keyidstr+1)
|| !hexdigitp (keyidstr+2) || !hexdigitp (keyidstr+3)
|| keyidstr[4])
return gpg_error (GPG_ERR_INV_ID);
fid = xtoi_4 (keyidstr);
if (fid != 0xC000)
return gpg_error (GPG_ERR_NOT_FOUND);
/* Prepare the DER object from INDATA. */
datalen = 35;
if (indatalen == 15+20)
{
/* Alright, the caller was so kind to send us an already
prepared DER object. Check that it is what we want and that
it matches the hash algorithm. */
if (hashalgo == GCRY_MD_SHA1 && !memcmp (indata, sha1_prefix, 15))
;
else if (hashalgo == GCRY_MD_RMD160 && !memcmp (indata, rmd160_prefix,15))
;
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data, indata, indatalen);
}
else if (indatalen == 19+32)
{
/* Alright, the caller was so kind to send us an already
prepared DER object. Check that it is what we want and that
it matches the hash algorithm. */
datalen = indatalen;
if (hashalgo == GCRY_MD_SHA256 && !memcmp (indata, sha256_prefix, 19))
;
else if (hashalgo == GCRY_MD_SHA1 && !memcmp (indata, sha256_prefix, 19))
{
/* Fixme: This is a kludge. A better solution is not to use
SHA1 as default but use an autodetection. However this
needs changes in all app-*.c */
datalen = indatalen;
}
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data, indata, indatalen);
}
else
{
int len = 15;
if (hashalgo == GCRY_MD_SHA1)
memcpy (data, sha1_prefix, len);
else if (hashalgo == GCRY_MD_RMD160)
memcpy (data, rmd160_prefix, len);
else if (hashalgo == GCRY_MD_SHA256)
{
len = 19;
datalen = len + indatalen;
memcpy (data, sha256_prefix, len);
}
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data+len, indata, indatalen);
}
rc = verify_pin (app, pincb, pincb_arg);
if (!rc)
rc = iso7816_compute_ds (app->slot, 0, data, datalen, 0,
outdata, outdatalen);
return rc;
}
#if 0
#warning test function - works but may brick your card
/* Handle the PASSWD command. CHVNOSTR is currently ignored; we
always use VHV0. RESET_MODE is not yet implemented. */
static gpg_error_t
do_change_pin (app_t app, ctrl_t ctrl, const char *chvnostr,
unsigned int flags,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg)
{
gpg_error_t err;
char *pinvalue;
const char *oldpin;
size_t oldpinlen;
if ((flags & APP_CHANGE_FLAG_RESET))
return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
if ((flags & APP_CHANGE_FLAG_NULLPIN))
{
/* With the nullpin flag, we do not verify the PIN - it would fail
if the Nullpin is still set. */
oldpin = "\0\0\0\0\0";
oldpinlen = 6;
}
else
{
err = verify_pin (app, pincb, pincb_arg);
if (err)
return err;
oldpin = NULL;
oldpinlen = 0;
}
/* TRANSLATORS: Do not translate the "|*|" prefixes but
keep it at the start of the string. We need this elsewhere
to get some infos on the string. */
err = pincb (pincb_arg, _("|N|Initial New PIN"), &pinvalue);
if (err)
{
log_error (_("error getting new PIN: %s\n"), gpg_strerror (err));
return err;
}
err = iso7816_change_reference_data (app->slot, 0x81,
oldpin, oldpinlen,
pinvalue, strlen (pinvalue));
xfree (pinvalue);
return err;
}
#endif /*0*/
/* Select the DINSIG application on the card in SLOT. This function
must be used before any other DINSIG application functions. */
gpg_error_t
app_select_dinsig (app_t app)
{
static char const aid[] = { 0xD2, 0x76, 0x00, 0x00, 0x66, 0x01 };
int slot = app->slot;
int rc;
rc = iso7816_select_application (slot, aid, sizeof aid, 0);
if (!rc)
{
app->apptype = APPTYPE_DINSIG;
app->fnc.learn_status = do_learn_status;
app->fnc.readcert = do_readcert;
app->fnc.getattr = NULL;
app->fnc.setattr = NULL;
app->fnc.genkey = NULL;
app->fnc.sign = do_sign;
app->fnc.auth = NULL;
app->fnc.decipher = NULL;
app->fnc.change_pin = NULL /*do_change_pin*/;
app->fnc.check_pin = NULL;
app->force_chv1 = 1;
}
return rc;
}
diff --git a/scd/app-help.c b/scd/app-help.c
index a54145840..476eecf2f 100644
--- a/scd/app-help.c
+++ b/scd/app-help.c
@@ -1,208 +1,214 @@
/* app-help.c - Application helper functions
* Copyright (C) 2004, 2009 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
#include
#include
#include
#include
#include
#include "scdaemon.h"
#include "iso7816.h"
#include "../common/tlv.h"
/* Count the number of bits, assuming the A represents an unsigned big
integer of length LEN bytes. If A is NULL a length of 0 is
returned. */
unsigned int
app_help_count_bits (const unsigned char *a, size_t len)
{
unsigned int n = len * 8;
int i;
if (!a)
return 0;
for (; len && !*a; len--, a++, n -=8)
;
if (len)
{
for (i=7; i && !(*a & (1< resultlen)
{
*r_certoff = 0;
return 0; /* That should never happen. */
}
}
else
*r_certoff = 0;
}
return resultlen;
}
diff --git a/scd/app-p15.c b/scd/app-p15.c
index 687c6ad32..23d68d0a4 100644
--- a/scd/app-p15.c
+++ b/scd/app-p15.c
@@ -1,4232 +1,4232 @@
/* app-p15.c - The pkcs#15 card application.
* Copyright (C) 2005 Free Software Foundation, Inc.
* Copyright (C) 2020 g10 Code GmbH
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
* SPDX-License-Identifier: GPL-3.0-or-later
*/
/* Information pertaining to the BELPIC developer card samples:
Unblock PUK: "222222111111"
Reset PIN: "333333111111")
e.g. the APDUs 00:20:00:02:08:2C:33:33:33:11:11:11:FF
and 00:24:01:01:08:24:12:34:FF:FF:FF:FF:FF
should change the PIN into 1234.
*/
#include
#include
#include
#include
#include
#include
#include
#include "scdaemon.h"
#include "iso7816.h"
#include "../common/i18n.h"
#include "../common/tlv.h"
#include "apdu.h" /* fixme: we should move the card detection to a
separate file */
/* Types of cards we know and which needs special treatment. */
typedef enum
{
CARD_TYPE_UNKNOWN,
CARD_TYPE_TCOS,
CARD_TYPE_MICARDO,
CARD_TYPE_CARDOS_50,
CARD_TYPE_BELPIC /* Belgian eID card specs. */
}
card_type_t;
/* The OS of card as specified by card_type_t is not always
* sufficient. Thus we also distinguish the actual product build upon
* the given OS. */
typedef enum
{
CARD_PRODUCT_UNKNOWN,
CARD_PRODUCT_DTRUST /* D-Trust GmbH (bundesdruckerei.de) */
}
card_product_t;
/* A list card types with ATRs noticed with these cards. */
#define X(a) ((unsigned char const *)(a))
static struct
{
size_t atrlen;
unsigned char const *atr;
card_type_t type;
} card_atr_list[] = {
{ 19, X("\x3B\xBA\x13\x00\x81\x31\x86\x5D\x00\x64\x05\x0A\x02\x01\x31\x80"
"\x90\x00\x8B"),
CARD_TYPE_TCOS }, /* SLE44 */
{ 19, X("\x3B\xBA\x14\x00\x81\x31\x86\x5D\x00\x64\x05\x14\x02\x02\x31\x80"
"\x90\x00\x91"),
CARD_TYPE_TCOS }, /* SLE66S */
{ 19, X("\x3B\xBA\x96\x00\x81\x31\x86\x5D\x00\x64\x05\x60\x02\x03\x31\x80"
"\x90\x00\x66"),
CARD_TYPE_TCOS }, /* SLE66P */
{ 27, X("\x3B\xFF\x94\x00\xFF\x80\xB1\xFE\x45\x1F\x03\x00\x68\xD2\x76\x00"
"\x00\x28\xFF\x05\x1E\x31\x80\x00\x90\x00\x23"),
CARD_TYPE_MICARDO }, /* German BMI card */
{ 19, X("\x3B\x6F\x00\xFF\x00\x68\xD2\x76\x00\x00\x28\xFF\x05\x1E\x31\x80"
"\x00\x90\x00"),
CARD_TYPE_MICARDO }, /* German BMI card (ATR due to reader problem) */
{ 26, X("\x3B\xFE\x94\x00\xFF\x80\xB1\xFA\x45\x1F\x03\x45\x73\x74\x45\x49"
"\x44\x20\x76\x65\x72\x20\x31\x2E\x30\x43"),
CARD_TYPE_MICARDO }, /* EstEID (Estonian Big Brother card) */
{ 11, X("\x3b\xd2\x18\x00\x81\x31\xfe\x58\xc9\x01\x14"),
CARD_TYPE_CARDOS_50 }, /* CardOS 5.0 */
{ 0 }
};
#undef X
/* The AID of PKCS15. */
static char const pkcs15_aid[] = { 0xA0, 0, 0, 0, 0x63,
0x50, 0x4B, 0x43, 0x53, 0x2D, 0x31, 0x35 };
/* The Belgian eID variant - they didn't understood why a shared AID
is useful for a standard. Oh well. */
static char const pkcs15be_aid[] = { 0xA0, 0, 0, 0x01, 0x77,
0x50, 0x4B, 0x43, 0x53, 0x2D, 0x31, 0x35 };
/* The PIN types as defined in pkcs#15 v1.1 */
typedef enum
{
PIN_TYPE_BCD = 0,
PIN_TYPE_ASCII_NUMERIC = 1,
PIN_TYPE_UTF8 = 2,
PIN_TYPE_HALF_NIBBLE_BCD = 3,
PIN_TYPE_ISO9564_1 = 4
} pin_type_t;
/* A bit array with for the key usage flags from the
commonKeyAttributes. */
struct keyusage_flags_s
{
unsigned int encrypt: 1;
unsigned int decrypt: 1;
unsigned int sign: 1;
unsigned int sign_recover: 1;
unsigned int wrap: 1;
unsigned int unwrap: 1;
unsigned int verify: 1;
unsigned int verify_recover: 1;
unsigned int derive: 1;
unsigned int non_repudiation: 1;
};
typedef struct keyusage_flags_s keyusage_flags_t;
/* This is an object to store information about a Certificate
Directory File (CDF) in a format suitable for further processing by
us. To keep memory management, simple we use a linked list of
items; i.e. one such object represents one certificate and the list
the entire CDF. */
struct cdf_object_s
{
/* Link to next item when used in a linked list. */
struct cdf_object_s *next;
/* Flags to indicate whether fields are valid. */
unsigned int have_off:1;
/* Length and allocated buffer with the Id of this object.
* This field is used for X.509 in PKCS#11 to make it easier to
* match a private key with a certificate. */
size_t objidlen;
unsigned char *objid;
/* To avoid reading a certificate more than once, we cache it in an
allocated memory IMAGE of IMAGELEN. */
size_t imagelen;
unsigned char *image;
/* The offset and length of the object. They are only valid if
HAVE_OFF is true and set to 0 if HAVE_OFF is false. */
unsigned long off, len;
/* The length of the path as given in the CDF and the path itself.
path[0] is the top DF (usually 0x3f00). The path will never be
empty. */
size_t pathlen;
unsigned short path[1];
};
typedef struct cdf_object_s *cdf_object_t;
/* This is an object to store information about a Private Key
Directory File (PrKDF) in a format suitable for further processing
by us. To keep memory management, simple we use a linked list of
items; i.e. one such object represents one certificate and the list
the entire PrKDF. */
struct prkdf_object_s
{
/* Link to next item when used in a linked list. */
struct prkdf_object_s *next;
/* Flags to indicate whether fields are valid. */
unsigned int keygrip_valid:1;
unsigned int key_reference_valid:1;
unsigned int have_off:1;
/* Flag indicating that the corresponding PIN has already been
* verified. */
unsigned int pin_verified:1;
/* The key's usage flags. */
keyusage_flags_t usageflags;
/* The keygrip of the key. This is used as a cache. */
char keygrip[2*KEYGRIP_LEN+1];
/* The Gcrypt algo identifier for the key. It is valid if the
* keygrip is also valid. */
int keyalgo;
/* The length of the key in bits (e.g. for RSA the length of the
* modulus). It is valid if the keygrip is also valid. */
unsigned int keynbits;
/* Malloced CN from the Subject-DN of the corresponding certificate
* or NULL if not known. */
char *common_name;
/* Malloced SerialNumber from the Subject-DN of the corresponding
* certificate or NULL if not known. */
char *serial_number;
/* Length and allocated buffer with the Id of this object. */
size_t objidlen;
unsigned char *objid;
/* Length and allocated buffer with the authId of this object or
NULL if no authID is known. */
size_t authidlen;
unsigned char *authid;
/* The keyReference and a flag telling whether it is valid. */
unsigned long key_reference;
/* The offset and length of the object. They are only valid if
* HAVE_OFF is true otherwise they are set to 0. */
unsigned long off, len;
/* The length of the path as given in the PrKDF and the path itself.
path[0] is the top DF (usually 0x3f00). */
size_t pathlen;
unsigned short path[1];
};
typedef struct prkdf_object_s *prkdf_object_t;
/* This is an object to store information about a Authentication
Object Directory File (AODF) in a format suitable for further
processing by us. To keep memory management, simple we use a linked
list of items; i.e. one such object represents one authentication
object and the list the entire AOKDF. */
struct aodf_object_s
{
/* Link to next item when used in a linked list. */
struct aodf_object_s *next;
/* Flags to indicate whether fields are valid. */
unsigned int have_off:1;
/* Length and allocated buffer with the Id of this object. */
size_t objidlen;
unsigned char *objid;
/* Length and allocated buffer with the authId of this object or
NULL if no authID is known. */
size_t authidlen;
unsigned char *authid;
/* The file ID of this AODF. */
unsigned short fid;
/* The PIN Flags. */
struct
{
unsigned int case_sensitive: 1;
unsigned int local: 1;
unsigned int change_disabled: 1;
unsigned int unblock_disabled: 1;
unsigned int initialized: 1;
unsigned int needs_padding: 1;
unsigned int unblocking_pin: 1;
unsigned int so_pin: 1;
unsigned int disable_allowed: 1;
unsigned int integrity_protected: 1;
unsigned int confidentiality_protected: 1;
unsigned int exchange_ref_data: 1;
} pinflags;
/* The PIN Type. */
pin_type_t pintype;
/* The minimum length of a PIN. */
unsigned long min_length;
/* The stored length of a PIN. */
unsigned long stored_length;
/* The maximum length of a PIN and a flag telling whether it is valid. */
unsigned long max_length;
int max_length_valid;
/* The pinReference and a flag telling whether it is valid. */
unsigned long pin_reference;
int pin_reference_valid;
/* The padChar and a flag telling whether it is valid. */
char pad_char;
int pad_char_valid;
/* The offset and length of the object. They are only valid if
HAVE_OFF is true and set to 0 if HAVE_OFF is false. */
unsigned long off, len;
/* The length of the path as given in the Aodf and the path itself.
path[0] is the top DF (usually 0x3f00). PATH is optional and thus
may be NULL. Malloced.*/
size_t pathlen;
unsigned short *path;
};
typedef struct aodf_object_s *aodf_object_t;
/* Context local to this application. */
struct app_local_s
{
/* The home DF. Note, that we don't yet support a multilevel
hierarchy. Thus we assume this is directly below the MF. */
unsigned short home_df;
/* The type of the card's OS. */
card_type_t card_type;
/* The vendor's product. */
card_product_t card_product;
/* Flag indicating whether we may use direct path selection. */
int direct_path_selection;
/* Structure with the EFIDs of the objects described in the ODF
file. */
struct
{
unsigned short private_keys;
unsigned short public_keys;
unsigned short trusted_public_keys;
unsigned short secret_keys;
unsigned short certificates;
unsigned short trusted_certificates;
unsigned short useful_certificates;
unsigned short data_objects;
unsigned short auth_objects;
} odf;
/* The PKCS#15 serialnumber from EF(TokeiNFo) or NULL. Malloced. */
unsigned char *serialno;
size_t serialnolen;
/* The manufacturerID from the TokenInfo EF. Malloced. */
char *manufacturer_id;
/* Information on all certificates. */
cdf_object_t certificate_info;
/* Information on all trusted certificates. */
cdf_object_t trusted_certificate_info;
/* Information on all useful certificates. */
cdf_object_t useful_certificate_info;
/* Information on all private keys. */
prkdf_object_t private_key_info;
/* Information on all authentication objects. */
aodf_object_t auth_object_info;
};
/*** Local prototypes. ***/
static gpg_error_t keygrip_from_prkdf (app_t app, prkdf_object_t prkdf);
static gpg_error_t readcert_by_cdf (app_t app, cdf_object_t cdf,
unsigned char **r_cert, size_t *r_certlen);
static char *get_dispserialno (app_t app, prkdf_object_t prkdf);
static gpg_error_t do_getattr (app_t app, ctrl_t ctrl, const char *name);
/* Release the CDF object A */
static void
release_cdflist (cdf_object_t a)
{
while (a)
{
cdf_object_t tmp = a->next;
xfree (a->image);
xfree (a->objid);
xfree (a);
a = tmp;
}
}
/* Release the PrKDF object A. */
static void
release_prkdflist (prkdf_object_t a)
{
while (a)
{
prkdf_object_t tmp = a->next;
xfree (a->common_name);
xfree (a->serial_number);
xfree (a->objid);
xfree (a->authid);
xfree (a);
a = tmp;
}
}
/* Release just one aodf object. */
void
release_aodf_object (aodf_object_t a)
{
if (a)
{
xfree (a->objid);
xfree (a->authid);
xfree (a->path);
xfree (a);
}
}
/* Release the AODF list A. */
static void
release_aodflist (aodf_object_t a)
{
while (a)
{
aodf_object_t tmp = a->next;
release_aodf_object (a);
a = tmp;
}
}
/* Release all local resources. */
static void
do_deinit (app_t app)
{
if (app && app->app_local)
{
release_cdflist (app->app_local->certificate_info);
release_cdflist (app->app_local->trusted_certificate_info);
release_cdflist (app->app_local->useful_certificate_info);
release_prkdflist (app->app_local->private_key_info);
release_aodflist (app->app_local->auth_object_info);
xfree (app->app_local->manufacturer_id);
xfree (app->app_local->serialno);
xfree (app->app_local);
app->app_local = NULL;
}
}
/* Do a select and a read for the file with EFID. EFID_DESC is a
desctription of the EF to be used with error messages. On success
BUFFER and BUFLEN contain the entire content of the EF. The caller
must free BUFFER only on success. */
static gpg_error_t
select_and_read_binary (int slot, unsigned short efid, const char *efid_desc,
unsigned char **buffer, size_t *buflen)
{
gpg_error_t err;
err = iso7816_select_file (slot, efid, 0);
if (err)
{
log_error ("p15: error selecting %s (0x%04X): %s\n",
efid_desc, efid, gpg_strerror (err));
return err;
}
err = iso7816_read_binary (slot, 0, 0, buffer, buflen);
if (err)
{
log_error ("p15: error reading %s (0x%04X): %s\n",
efid_desc, efid, gpg_strerror (err));
return err;
}
return 0;
}
/* This function calls select file to read a file using a complete
path which may or may not start at the master file (MF). */
static gpg_error_t
select_ef_by_path (app_t app, const unsigned short *path, size_t pathlen)
{
gpg_error_t err;
int i, j;
if (!pathlen)
return gpg_error (GPG_ERR_INV_VALUE);
if (pathlen && *path != 0x3f00 )
log_error ("p15: warning: relative path selection not yet implemented\n");
if (app->app_local->direct_path_selection)
{
err = iso7816_select_path (app->slot, path+1, pathlen-1, 0);
if (err)
{
log_error ("p15: error selecting path ");
for (j=0; j < pathlen; j++)
log_printf ("%04hX", path[j]);
log_printf (": %s\n", gpg_strerror (err));
return err;
}
}
else
{
/* FIXME: Need code to remember the last PATH so that we can decide
what select commands to send in case the path does not start off
with 3F00. We might also want to use direct path selection if
supported by the card. */
for (i=0; i < pathlen; i++)
{
err = iso7816_select_file (app->slot, path[i], !(i+1 == pathlen));
if (err)
{
log_error ("p15: error selecting part %d from path ", i);
for (j=0; j < pathlen; j++)
log_printf ("%04hX", path[j]);
log_printf (": %s\n", gpg_strerror (err));
return err;
}
}
}
return 0;
}
/* Parse a cert Id string (or a key Id string) and return the binary
object Id string in a newly allocated buffer stored at R_OBJID and
R_OBJIDLEN. On Error NULL will be stored there and an error code
returned. On success caller needs to free the buffer at R_OBJID. */
static gpg_error_t
parse_certid (app_t app, const char *certid,
unsigned char **r_objid, size_t *r_objidlen)
{
char tmpbuf[10];
const char *s;
size_t objidlen;
unsigned char *objid;
int i;
*r_objid = NULL;
*r_objidlen = 0;
if (certid[0] != 'P' && strlen (certid) == 40) /* This is a keygrip. */
{
prkdf_object_t prkdf;
for (prkdf = app->app_local->private_key_info;
prkdf; prkdf = prkdf->next)
if (!keygrip_from_prkdf (app, prkdf)
&& !strcmp (certid, prkdf->keygrip))
break;
if (!prkdf || !prkdf->objidlen || !prkdf->objid)
return gpg_error (GPG_ERR_NOT_FOUND);
objidlen = prkdf->objidlen;
objid = xtrymalloc (objidlen);
if (!objid)
return gpg_error_from_syserror ();
memcpy (objid, prkdf->objid, prkdf->objidlen);
}
else /* This is a usual keyref. */
{
if (app->app_local->home_df)
snprintf (tmpbuf, sizeof tmpbuf, "P15-%04X.",
(unsigned int)(app->app_local->home_df & 0xffff));
else
strcpy (tmpbuf, "P15.");
if (strncmp (certid, tmpbuf, strlen (tmpbuf)) )
{
if (!strncmp (certid, "P15.", 4)
|| (!strncmp (certid, "P15-", 4)
&& hexdigitp (certid+4)
&& hexdigitp (certid+5)
&& hexdigitp (certid+6)
&& hexdigitp (certid+7)
&& certid[8] == '.'))
return gpg_error (GPG_ERR_NOT_FOUND);
return gpg_error (GPG_ERR_INV_ID);
}
certid += strlen (tmpbuf);
for (s=certid, objidlen=0; hexdigitp (s); s++, objidlen++)
;
if (*s || !objidlen || (objidlen%2))
return gpg_error (GPG_ERR_INV_ID);
objidlen /= 2;
objid = xtrymalloc (objidlen);
if (!objid)
return gpg_error_from_syserror ();
for (s=certid, i=0; i < objidlen; i++, s+=2)
objid[i] = xtoi_2 (s);
}
*r_objid = objid;
*r_objidlen = objidlen;
return 0;
}
/* Find a certificate object by the certificate ID CERTID and store a
pointer to it at R_CDF. */
static gpg_error_t
cdf_object_from_certid (app_t app, const char *certid, cdf_object_t *r_cdf)
{
gpg_error_t err;
size_t objidlen;
unsigned char *objid;
cdf_object_t cdf;
err = parse_certid (app, certid, &objid, &objidlen);
if (err)
return err;
for (cdf = app->app_local->certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == objidlen && !memcmp (cdf->objid, objid, objidlen))
break;
if (!cdf)
for (cdf = app->app_local->trusted_certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == objidlen && !memcmp (cdf->objid, objid, objidlen))
break;
if (!cdf)
for (cdf = app->app_local->useful_certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == objidlen && !memcmp (cdf->objid, objid, objidlen))
break;
xfree (objid);
if (!cdf)
return gpg_error (GPG_ERR_NOT_FOUND);
*r_cdf = cdf;
return 0;
}
/* Find a private key object by the key Id string KEYIDSTR and store a
pointer to it at R_PRKDF. */
static gpg_error_t
prkdf_object_from_keyidstr (app_t app, const char *keyidstr,
prkdf_object_t *r_prkdf)
{
gpg_error_t err;
size_t objidlen;
unsigned char *objid;
prkdf_object_t prkdf;
err = parse_certid (app, keyidstr, &objid, &objidlen);
if (err)
return err;
for (prkdf = app->app_local->private_key_info; prkdf; prkdf = prkdf->next)
if (prkdf->objidlen == objidlen && !memcmp (prkdf->objid, objid, objidlen))
break;
xfree (objid);
if (!prkdf)
return gpg_error (GPG_ERR_NOT_FOUND);
*r_prkdf = prkdf;
return 0;
}
/* Read and parse the Object Directory File and store away the
pointers. ODF_FID shall contain the FID of the ODF.
Example of such a file:
A0 06 30 04 04 02 60 34 = Private Keys
A4 06 30 04 04 02 60 35 = Certificates
A5 06 30 04 04 02 60 36 = Trusted Certificates
A7 06 30 04 04 02 60 37 = Data Objects
A8 06 30 04 04 02 60 38 = Auth Objects
These are all PathOrObjects using the path CHOICE element. The
paths are octet strings of length 2. Using this Path CHOICE
element is recommended, so we only implement that for now.
*/
static gpg_error_t
read_ef_odf (app_t app, unsigned short odf_fid)
{
gpg_error_t err;
unsigned char *buffer, *p;
size_t buflen, n;
unsigned short value;
size_t offset;
unsigned short home_df = 0;
err = select_and_read_binary (app->slot, odf_fid, "ODF", &buffer, &buflen);
if (err)
return err;
if (buflen < 8)
{
log_error ("p15: error: ODF too short\n");
xfree (buffer);
return gpg_error (GPG_ERR_INV_OBJ);
}
home_df = app->app_local->home_df;
p = buffer;
while (buflen && *p && *p != 0xff)
{
if ( buflen >= 8
&& (p[0] & 0xf0) == 0xA0
&& !memcmp (p+1, "\x06\x30\x04\x04\x02", 5) )
{
offset = 6;
}
else if ( buflen >= 12
&& (p[0] & 0xf0) == 0xA0
&& !memcmp (p+1, "\x0a\x30\x08\x04\x06\x3F\x00", 7)
&& (!home_df || home_df == ((p[8]<<8)|p[9])) )
{
/* If we do not know the home DF, we take it from the first
* ODF object. Here are sample values:
* a0 0a 30 08 0406 3f00 5015 4401
* a1 0a 30 08 0406 3f00 5015 4411
* a4 0a 30 08 0406 3f00 5015 4441
* a5 0a 30 08 0406 3f00 5015 4451
* a8 0a 30 08 0406 3f00 5015 4481
* 00000000 */
if (!home_df)
{
home_df = ((p[8]<<8)|p[9]);
app->app_local->home_df = home_df;
log_info ("p15: application directory detected as 0x%04hX\n",
home_df);
/* We assume that direct path selection is possible. */
app->app_local->direct_path_selection = 1;
}
/* We only allow a full path if all files are at the same
level and below the home directory. To extend this we
would need to make use of new data type capable of
keeping a full path. */
offset = 10;
}
else
{
log_printhex (p, buflen, "p15: ODF format not supported:");
xfree (buffer);
return gpg_error (GPG_ERR_INV_OBJ);
}
switch ((p[0] & 0x0f))
{
case 0: value = app->app_local->odf.private_keys; break;
case 1: value = app->app_local->odf.public_keys; break;
case 2: value = app->app_local->odf.trusted_public_keys; break;
case 3: value = app->app_local->odf.secret_keys; break;
case 4: value = app->app_local->odf.certificates; break;
case 5: value = app->app_local->odf.trusted_certificates; break;
case 6: value = app->app_local->odf.useful_certificates; break;
case 7: value = app->app_local->odf.data_objects; break;
case 8: value = app->app_local->odf.auth_objects; break;
default: value = 0; break;
}
if (value)
{
log_error ("p15: duplicate object type %d in ODF ignored\n",
(p[0]&0x0f));
continue;
}
value = ((p[offset] << 8) | p[offset+1]);
switch ((p[0] & 0x0f))
{
case 0: app->app_local->odf.private_keys = value; break;
case 1: app->app_local->odf.public_keys = value; break;
case 2: app->app_local->odf.trusted_public_keys = value; break;
case 3: app->app_local->odf.secret_keys = value; break;
case 4: app->app_local->odf.certificates = value; break;
case 5: app->app_local->odf.trusted_certificates = value; break;
case 6: app->app_local->odf.useful_certificates = value; break;
case 7: app->app_local->odf.data_objects = value; break;
case 8: app->app_local->odf.auth_objects = value; break;
default:
log_error ("p15: unknown object type %d in ODF ignored\n",
(p[0]&0x0f));
}
offset += 2;
if (buflen < offset)
break;
p += offset;
buflen -= offset;
}
if (buflen)
{
/* Print a warning if non-null garbage is left over. */
for (n=0; n < buflen && !p[n]; n++)
;
if (n < buflen)
{
log_info ("p15: warning: garbage detected at end of ODF: ");
log_printhex (p, buflen, "");
}
}
xfree (buffer);
return 0;
}
/* Parse the BIT STRING with the keyUsageFlags from the
CommonKeyAttributes. */
static gpg_error_t
parse_keyusage_flags (const unsigned char *der, size_t derlen,
keyusage_flags_t *usageflags)
{
unsigned int bits, mask;
int i, unused, full;
memset (usageflags, 0, sizeof *usageflags);
if (!derlen)
return gpg_error (GPG_ERR_INV_OBJ);
unused = *der++; derlen--;
if ((!derlen && unused) || unused/8 > derlen)
return gpg_error (GPG_ERR_ENCODING_PROBLEM);
full = derlen - (unused+7)/8;
unused %= 8;
mask = 0;
for (i=1; unused; i <<= 1, unused--)
mask |= i;
/* First octet */
if (derlen)
{
bits = *der++; derlen--;
if (full)
full--;
else
{
bits &= ~mask;
mask = 0;
}
}
else
bits = 0;
if ((bits & 0x80)) usageflags->encrypt = 1;
if ((bits & 0x40)) usageflags->decrypt = 1;
if ((bits & 0x20)) usageflags->sign = 1;
if ((bits & 0x10)) usageflags->sign_recover = 1;
if ((bits & 0x08)) usageflags->wrap = 1;
if ((bits & 0x04)) usageflags->unwrap = 1;
if ((bits & 0x02)) usageflags->verify = 1;
if ((bits & 0x01)) usageflags->verify_recover = 1;
/* Second octet. */
if (derlen)
{
bits = *der++; derlen--;
if (full)
full--;
else
{
bits &= ~mask;
}
}
else
bits = 0;
if ((bits & 0x80)) usageflags->derive = 1;
if ((bits & 0x40)) usageflags->non_repudiation = 1;
return 0;
}
/* Read and parse the Private Key Directory Files. */
/*
6034 (privatekeys)
30 33 30 11 0C 08 53 4B 2E 43 48 2E 44 53 03 02 030...SK.CH.DS..
06 80 04 01 07 30 0C 04 01 01 03 03 06 00 40 02 .....0........@.
02 00 50 A1 10 30 0E 30 08 04 06 3F 00 40 16 00 ..P..0.0...?.@..
50 02 02 04 00 30 33 30 11 0C 08 53 4B 2E 43 48 P....030...SK.CH
2E 4B 45 03 02 06 80 04 01 0A 30 0C 04 01 0C 03 .KE.......0.....
03 06 44 00 02 02 00 52 A1 10 30 0E 30 08 04 06 ..D....R..0.0...
3F 00 40 16 00 52 02 02 04 00 30 34 30 12 0C 09 ?.@..R....040...
53 4B 2E 43 48 2E 41 55 54 03 02 06 80 04 01 0A SK.CH.AUT.......
30 0C 04 01 0D 03 03 06 20 00 02 02 00 51 A1 10 0....... ....Q..
30 0E 30 08 04 06 3F 00 40 16 00 51 02 02 04 00 0.0...?.@..Q....
30 37 30 15 0C 0C 53 4B 2E 43 48 2E 44 53 2D 53 070...SK.CH.DS-S
50 58 03 02 06 80 04 01 0A 30 0C 04 01 02 03 03 PX.......0......
06 20 00 02 02 00 53 A1 10 30 0E 30 08 04 06 3F . ....S..0.0...?
00 40 16 00 53 02 02 04 00 00 00 00 00 00 00 00 .@..S...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0 30 51: SEQUENCE {
2 30 17: SEQUENCE { -- commonObjectAttributes
4 0C 8: UTF8String 'SK.CH.DS'
14 03 2: BIT STRING 6 unused bits
: '01'B (bit 0)
18 04 1: OCTET STRING --authid
: 07
: }
21 30 12: SEQUENCE { -- commonKeyAttributes
23 04 1: OCTET STRING
: 01
26 03 3: BIT STRING 6 unused bits
: '1000000000'B (bit 9)
31 02 2: INTEGER 80 -- keyReference (optional)
: }
35 A1 16: [1] { -- keyAttributes
37 30 14: SEQUENCE { -- privateRSAKeyAttributes
39 30 8: SEQUENCE { -- objectValue
41 04 6: OCTET STRING --path
: 3F 00 40 16 00 50
: }
49 02 2: INTEGER 1024 -- modulus
: }
: }
: }
*/
static gpg_error_t
read_ef_prkdf (app_t app, unsigned short fid, prkdf_object_t *result)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
prkdf_object_t prkdflist = NULL;
int i;
if (!fid)
return gpg_error (GPG_ERR_NO_DATA); /* No private keys. */
err = select_and_read_binary (app->slot, fid, "PrKDF", &buffer, &buflen);
if (err)
return err;
p = buffer;
n = buflen;
/* FIXME: This shares a LOT of code with read_ef_cdf! */
/* Loop over the records. We stop as soon as we detect a new record
starting with 0x00 or 0xff as these values are commonly used to
pad data blocks and are no valid ASN.1 encoding. */
while (n && *p && *p != 0xff)
{
const unsigned char *pp;
size_t nn;
int where;
const char *errstr = NULL;
prkdf_object_t prkdf = NULL;
unsigned long ul;
const unsigned char *objid;
size_t objidlen;
const unsigned char *authid = NULL;
size_t authidlen = 0;
keyusage_flags_t usageflags;
unsigned long key_reference = 0;
int key_reference_valid = 0;
const char *s;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("p15: error parsing PrKDF record: %s\n",
gpg_strerror (err));
goto leave;
}
pp = p;
nn = objlen;
p += objlen;
n -= objlen;
/* Parse the commonObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Search the optional AuthId. We need to skip the optional
Label (UTF8STRING) and the optional CommonObjectFlags
(BITSTRING). */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
if (tag == TAG_UTF8_STRING)
{
ppp += objlen; /* Skip the Label. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_BIT_STRING)
{
ppp += objlen; /* Skip the CommonObjectFlags. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_OCTET_STRING && objlen)
{
authid = ppp;
authidlen = objlen;
}
no_authid:
;
}
/* Parse the commonKeyAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Get the Id. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
objid = ppp;
objidlen = objlen;
ppp += objlen;
nnn -= objlen;
/* Get the KeyUsageFlags. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_BIT_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
err = parse_keyusage_flags (ppp, objlen, &usageflags);
if (err)
goto parse_error;
ppp += objlen;
nnn -= objlen;
/* Find the keyReference */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_UNIVERSAL && tag == TAG_BOOLEAN)
{
/* Skip the native element. */
ppp += objlen;
nnn -= objlen;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
if (class == CLASS_UNIVERSAL && tag == TAG_BIT_STRING)
{
/* Skip the accessFlags. */
ppp += objlen;
nnn -= objlen;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
if (class == CLASS_UNIVERSAL && tag == TAG_INTEGER)
{
/* Yep, this is the keyReference. */
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*ppp++) & 0xff;
nnn--;
}
key_reference = ul;
key_reference_valid = 1;
}
leave_cki:
;
}
/* Skip subClassAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_CONTEXT && tag == 0)
{
pp += objlen;
nn -= objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
}
/* Parse the keyAttributes. */
if (!err && (objlen > nn || class != CLASS_CONTEXT || tag != 1))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE)
; /* RSA */
else if (class == CLASS_CONTEXT)
{
switch (tag)
{
case 0: errstr = "EC key objects are not supported"; break;
case 1: errstr = "DH key objects are not supported"; break;
case 2: errstr = "DSA key objects are not supported"; break;
case 3: errstr = "KEA key objects are not supported"; break;
default: errstr = "unknown privateKeyObject"; break;
}
goto parse_error;
}
else
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto parse_error;
}
nn = objlen;
/* Check that the reference is a Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE)
{
errstr = "unsupported reference type";
goto parse_error;
}
nn = objlen;
/* Parse the Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
/* Make sure that the next element is a non zero path and of
even length (FID are two bytes each). */
if (class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING
|| !objlen || (objlen & 1) )
{
errstr = "invalid path reference";
goto parse_error;
}
/* Create a new PrKDF list item. */
prkdf = xtrycalloc (1, (sizeof *prkdf
- sizeof(unsigned short)
+ objlen/2 * sizeof(unsigned short)));
if (!prkdf)
{
err = gpg_error_from_syserror ();
goto leave;
}
prkdf->objidlen = objidlen;
prkdf->objid = xtrymalloc (objidlen);
if (!prkdf->objid)
{
err = gpg_error_from_syserror ();
xfree (prkdf);
goto leave;
}
memcpy (prkdf->objid, objid, objidlen);
if (authid)
{
prkdf->authidlen = authidlen;
prkdf->authid = xtrymalloc (authidlen);
if (!prkdf->authid)
{
err = gpg_error_from_syserror ();
xfree (prkdf->objid);
xfree (prkdf);
goto leave;
}
memcpy (prkdf->authid, authid, authidlen);
}
prkdf->pathlen = objlen/2;
for (i=0; i < prkdf->pathlen; i++, pp += 2, nn -= 2)
prkdf->path[i] = ((pp[0] << 8) | pp[1]);
prkdf->usageflags = usageflags;
prkdf->key_reference = key_reference;
prkdf->key_reference_valid = key_reference_valid;
if (nn)
{
/* An index and length follows. */
prkdf->have_off = 1;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
prkdf->off = ul;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_CONTEXT || tag != 0))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
prkdf->len = ul;
}
if (opt.verbose)
{
log_info ("p15: PrKDF %04hX: id=", fid);
for (i=0; i < prkdf->objidlen; i++)
log_printf ("%02X", prkdf->objid[i]);
log_printf (" path=");
for (i=0; i < prkdf->pathlen; i++)
log_printf ("%s%04hX", i?"/":"",prkdf->path[i]);
if (prkdf->have_off)
log_printf ("[%lu/%lu]", prkdf->off, prkdf->len);
if (prkdf->authid)
{
log_printf (" authid=");
for (i=0; i < prkdf->authidlen; i++)
log_printf ("%02X", prkdf->authid[i]);
}
if (prkdf->key_reference_valid)
log_printf (" keyref=0x%02lX", prkdf->key_reference);
log_info ("p15: usage=");
s = "";
if (prkdf->usageflags.encrypt) log_printf ("%sencrypt", s), s = ",";
if (prkdf->usageflags.decrypt) log_printf ("%sdecrypt", s), s = ",";
if (prkdf->usageflags.sign ) log_printf ("%ssign", s), s = ",";
if (prkdf->usageflags.sign_recover)
log_printf ("%ssign_recover", s), s = ",";
if (prkdf->usageflags.wrap ) log_printf ("%swrap", s), s = ",";
if (prkdf->usageflags.unwrap ) log_printf ("%sunwrap", s), s = ",";
if (prkdf->usageflags.verify ) log_printf ("%sverify", s), s = ",";
if (prkdf->usageflags.verify_recover)
log_printf ("%sverify_recover", s), s = ",";
if (prkdf->usageflags.derive ) log_printf ("%sderive", s), s = ",";
if (prkdf->usageflags.non_repudiation)
log_printf ("%snon_repudiation", s), s = ",";
log_printf ("\n");
}
/* Put it into the list. */
prkdf->next = prkdflist;
prkdflist = prkdf;
prkdf = NULL;
continue; /* Ready. */
parse_error:
log_error ("p15: error parsing PrKDF record (%d): %s - skipped\n",
where, errstr? errstr : gpg_strerror (err));
if (prkdf)
{
xfree (prkdf->objid);
xfree (prkdf->authid);
xfree (prkdf);
}
err = 0;
} /* End looping over all records. */
leave:
xfree (buffer);
if (err)
release_prkdflist (prkdflist);
else
*result = prkdflist;
return err;
}
/* Read and parse the Certificate Directory Files identified by FID.
On success a newlist of CDF object gets stored at RESULT and the
caller is then responsible of releasing this list. On error a
error code is returned and RESULT won't get changed. */
static gpg_error_t
read_ef_cdf (app_t app, unsigned short fid, cdf_object_t *result)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
cdf_object_t cdflist = NULL;
int i;
if (!fid)
return gpg_error (GPG_ERR_NO_DATA); /* No certificates. */
err = select_and_read_binary (app->slot, fid, "CDF", &buffer, &buflen);
if (err)
return err;
p = buffer;
n = buflen;
/* Loop over the records. We stop as soon as we detect a new record
starting with 0x00 or 0xff as these values are commonly used to
pad data blocks and are no valid ASN.1 encoding. */
while (n && *p && *p != 0xff)
{
const unsigned char *pp;
size_t nn;
int where;
const char *errstr = NULL;
cdf_object_t cdf = NULL;
unsigned long ul;
const unsigned char *objid;
size_t objidlen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("p15: error parsing CDF record: %s\n", gpg_strerror (err));
goto leave;
}
pp = p;
nn = objlen;
p += objlen;
n -= objlen;
/* Skip the commonObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
pp += objlen;
nn -= objlen;
/* Parse the commonCertificateAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Get the Id. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
objid = ppp;
objidlen = objlen;
}
/* Parse the certAttribute. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || class != CLASS_CONTEXT || tag != 1))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
/* Check that the reference is a Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE)
{
errstr = "unsupported reference type";
goto parse_error;
}
nn = objlen;
/* Parse the Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
/* Make sure that the next element is a non zero path and of
even length (FID are two bytes each). */
if (class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING
|| !objlen || (objlen & 1) )
{
errstr = "invalid path reference";
goto parse_error;
}
/* Create a new CDF list item. */
cdf = xtrycalloc (1, (sizeof *cdf
- sizeof(unsigned short)
+ objlen/2 * sizeof(unsigned short)));
if (!cdf)
{
err = gpg_error_from_syserror ();
goto leave;
}
cdf->objidlen = objidlen;
cdf->objid = xtrymalloc (objidlen);
if (!cdf->objid)
{
err = gpg_error_from_syserror ();
xfree (cdf);
goto leave;
}
memcpy (cdf->objid, objid, objidlen);
cdf->pathlen = objlen/2;
for (i=0; i < cdf->pathlen; i++, pp += 2, nn -= 2)
cdf->path[i] = ((pp[0] << 8) | pp[1]);
if (nn)
{
/* An index and length follows. */
cdf->have_off = 1;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
cdf->off = ul;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_CONTEXT || tag != 0))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
cdf->len = ul;
}
if (opt.verbose)
{
log_info ("p15: CDF %04hX: id=", fid);
for (i=0; i < cdf->objidlen; i++)
log_printf ("%02X", cdf->objid[i]);
log_printf (" path=");
for (i=0; i < cdf->pathlen; i++)
log_printf ("%s%04hX", i?"/":"", cdf->path[i]);
if (cdf->have_off)
log_printf ("[%lu/%lu]", cdf->off, cdf->len);
log_printf ("\n");
}
/* Put it into the list. */
cdf->next = cdflist;
cdflist = cdf;
cdf = NULL;
continue; /* Ready. */
parse_error:
log_error ("p15: error parsing CDF record (%d): %s - skipped\n",
where, errstr? errstr : gpg_strerror (err));
xfree (cdf);
err = 0;
} /* End looping over all records. */
leave:
xfree (buffer);
if (err)
release_cdflist (cdflist);
else
*result = cdflist;
return err;
}
/*
SEQUENCE {
SEQUENCE { -- CommonObjectAttributes
UTF8String 'specific PIN for DS'
BIT STRING 0 unused bits
'00000011'B
}
SEQUENCE { -- CommonAuthenticationObjectAttributes
OCTET STRING
07 -- iD
}
[1] { -- typeAttributes
SEQUENCE { -- PinAttributes
BIT STRING 0 unused bits
'0000100000110010'B -- local,initialized,needs-padding
-- exchangeRefData
ENUMERATED 1 -- ascii-numeric
INTEGER 6 -- minLength
INTEGER 6 -- storedLength
INTEGER 8 -- maxLength
[0]
02 -- pinReference
GeneralizedTime 19/04/2002 12:12 GMT -- lastPinChange
SEQUENCE {
OCTET STRING
3F 00 40 16 -- path to DF of PIN
}
}
}
}
*/
/* Read and parse an Authentication Object Directory File identified
by FID. On success a newlist of AODF objects gets stored at RESULT
and the caller is responsible of releasing this list. On error a
error code is returned and RESULT won't get changed. */
static gpg_error_t
read_ef_aodf (app_t app, unsigned short fid, aodf_object_t *result)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
aodf_object_t aodflist = NULL;
int i;
if (!fid)
return gpg_error (GPG_ERR_NO_DATA); /* No authentication objects. */
err = select_and_read_binary (app->slot, fid, "AODF", &buffer, &buflen);
if (err)
return err;
p = buffer;
n = buflen;
/* FIXME: This shares a LOT of code with read_ef_prkdf! */
/* Loop over the records. We stop as soon as we detect a new record
starting with 0x00 or 0xff as these values are commonly used to
pad data blocks and are no valid ASN.1 encoding. */
while (n && *p && *p != 0xff)
{
const unsigned char *pp;
size_t nn;
int where;
const char *errstr = NULL;
aodf_object_t aodf = NULL;
unsigned long ul;
const char *s;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("p15: error parsing AODF record: %s\n",
gpg_strerror (err));
goto leave;
}
pp = p;
nn = objlen;
p += objlen;
n -= objlen;
/* Allocate memory for a new AODF list item. */
aodf = xtrycalloc (1, sizeof *aodf);
if (!aodf)
goto no_core;
aodf->fid = fid;
/* Parse the commonObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Search the optional AuthId. We need to skip the optional
Label (UTF8STRING) and the optional CommonObjectFlags
(BITSTRING). */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
if (tag == TAG_UTF8_STRING)
{
ppp += objlen; /* Skip the Label. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_BIT_STRING)
{
ppp += objlen; /* Skip the CommonObjectFlags. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_OCTET_STRING && objlen)
{
aodf->authidlen = objlen;
aodf->authid = xtrymalloc (objlen);
if (!aodf->authid)
goto no_core;
memcpy (aodf->authid, ppp, objlen);
}
no_authid:
;
}
/* Parse the CommonAuthenticationObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Get the Id. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
aodf->objidlen = objlen;
aodf->objid = xtrymalloc (objlen);
if (!aodf->objid)
goto no_core;
memcpy (aodf->objid, ppp, objlen);
}
/* Parse the typeAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || class != CLASS_CONTEXT || tag != 1))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE)
; /* PinAttributes */
else if (class == CLASS_CONTEXT)
{
switch (tag)
{
case 0: errstr = "biometric auth types are not supported"; break;
case 1: errstr = "authKey auth types are not supported"; break;
case 2: errstr = "external auth type are not supported"; break;
default: errstr = "unknown privateKeyObject"; break;
}
goto parse_error;
}
else
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto parse_error;
}
nn = objlen;
/* PinFlags */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || !objlen
|| class != CLASS_UNIVERSAL || tag != TAG_BIT_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
unsigned int bits, mask;
int unused, full;
unused = *pp++; nn--; objlen--;
if ((!objlen && unused) || unused/8 > objlen)
{
err = gpg_error (GPG_ERR_ENCODING_PROBLEM);
goto parse_error;
}
full = objlen - (unused+7)/8;
unused %= 8;
mask = 0;
for (i=1; unused; i <<= 1, unused--)
mask |= i;
/* The first octet */
bits = 0;
if (objlen)
{
bits = *pp++; nn--; objlen--;
if (full)
full--;
else
{
bits &= ~mask;
mask = 0;
}
}
if ((bits & 0x80)) /* ASN.1 bit 0. */
aodf->pinflags.case_sensitive = 1;
if ((bits & 0x40)) /* ASN.1 bit 1. */
aodf->pinflags.local = 1;
if ((bits & 0x20))
aodf->pinflags.change_disabled = 1;
if ((bits & 0x10))
aodf->pinflags.unblock_disabled = 1;
if ((bits & 0x08))
aodf->pinflags.initialized = 1;
if ((bits & 0x04))
aodf->pinflags.needs_padding = 1;
if ((bits & 0x02))
aodf->pinflags.unblocking_pin = 1;
if ((bits & 0x01))
aodf->pinflags.so_pin = 1;
/* The second octet. */
bits = 0;
if (objlen)
{
bits = *pp++; nn--; objlen--;
if (full)
full--;
else
{
bits &= ~mask;
}
}
if ((bits & 0x80))
aodf->pinflags.disable_allowed = 1;
if ((bits & 0x40))
aodf->pinflags.integrity_protected = 1;
if ((bits & 0x20))
aodf->pinflags.confidentiality_protected = 1;
if ((bits & 0x10))
aodf->pinflags.exchange_ref_data = 1;
/* Skip remaining bits. */
pp += objlen;
nn -= objlen;
}
/* PinType */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_ENUMERATED))
err = gpg_error (GPG_ERR_INV_OBJ);
if (!err && objlen > sizeof (ul))
err = gpg_error (GPG_ERR_UNSUPPORTED_ENCODING);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
aodf->pintype = ul;
/* minLength */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (!err && objlen > sizeof (ul))
err = gpg_error (GPG_ERR_UNSUPPORTED_ENCODING);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
aodf->min_length = ul;
/* storedLength */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (!err && objlen > sizeof (ul))
err = gpg_error (GPG_ERR_UNSUPPORTED_ENCODING);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
aodf->stored_length = ul;
/* optional maxLength */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto ready;
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_UNIVERSAL && tag == TAG_INTEGER)
{
if (objlen > sizeof (ul))
{
err = gpg_error (GPG_ERR_UNSUPPORTED_ENCODING);
goto parse_error;
}
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
aodf->max_length = ul;
aodf->max_length_valid = 1;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto ready;
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
/* Optional pinReference. */
if (class == CLASS_CONTEXT && tag == 0)
{
if (objlen > sizeof (ul))
{
err = gpg_error (GPG_ERR_UNSUPPORTED_ENCODING);
goto parse_error;
}
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*pp++) & 0xff;
nn--;
}
aodf->pin_reference = ul;
aodf->pin_reference_valid = 1;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto ready;
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
/* Optional padChar. */
if (class == CLASS_UNIVERSAL && tag == TAG_OCTET_STRING)
{
if (objlen != 1)
{
errstr = "padChar is not of size(1)";
goto parse_error;
}
aodf->pad_char = *pp++; nn--;
aodf->pad_char_valid = 1;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto ready;
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
/* Skip optional lastPinChange. */
if (class == CLASS_UNIVERSAL && tag == TAG_GENERALIZED_TIME)
{
pp += objlen;
nn -= objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto ready;
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
/* Optional Path object. */
if (class == CLASS_UNIVERSAL || tag == TAG_SEQUENCE)
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
/* Make sure that the next element is a non zero FID and of
even length (FID are two bytes each). */
if (class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING
|| !objlen || (objlen & 1) )
{
errstr = "invalid path reference";
goto parse_error;
}
aodf->pathlen = objlen/2;
aodf->path = xtrymalloc (aodf->pathlen);
if (!aodf->path)
goto no_core;
for (i=0; i < aodf->pathlen; i++, ppp += 2, nnn -= 2)
aodf->path[i] = ((ppp[0] << 8) | ppp[1]);
if (nnn)
{
/* An index and length follows. */
aodf->have_off = 1;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*ppp++) & 0xff;
nnn--;
}
aodf->off = ul;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_CONTEXT || tag != 0))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*ppp++) & 0xff;
nnn--;
}
aodf->len = ul;
}
}
/* Igonore further objects which might be there due to future
extensions of pkcs#15. */
ready:
if (opt.verbose)
{
log_info ("p15: AODF %04hX: id=", fid);
for (i=0; i < aodf->objidlen; i++)
log_printf ("%02X", aodf->objid[i]);
if (aodf->authid)
{
log_printf (" authid=");
for (i=0; i < aodf->authidlen; i++)
log_printf ("%02X", aodf->authid[i]);
}
if (aodf->pin_reference_valid)
log_printf (" pinref=0x%02lX", aodf->pin_reference);
if (aodf->pathlen)
{
log_printf (" path=");
for (i=0; i < aodf->pathlen; i++)
log_printf ("%s%04hX", i?"/":"",aodf->path[i]);
if (aodf->have_off)
log_printf ("[%lu/%lu]", aodf->off, aodf->len);
}
log_printf (" min=%lu", aodf->min_length);
log_printf (" stored=%lu", aodf->stored_length);
if (aodf->max_length_valid)
log_printf (" max=%lu", aodf->max_length);
if (aodf->pad_char_valid)
log_printf (" pad=0x%02x", aodf->pad_char);
log_info ("p15: flags=");
s = "";
if (aodf->pinflags.case_sensitive)
log_printf ("%scase_sensitive", s), s = ",";
if (aodf->pinflags.local)
log_printf ("%slocal", s), s = ",";
if (aodf->pinflags.change_disabled)
log_printf ("%schange_disabled", s), s = ",";
if (aodf->pinflags.unblock_disabled)
log_printf ("%sunblock_disabled", s), s = ",";
if (aodf->pinflags.initialized)
log_printf ("%sinitialized", s), s = ",";
if (aodf->pinflags.needs_padding)
log_printf ("%sneeds_padding", s), s = ",";
if (aodf->pinflags.unblocking_pin)
log_printf ("%sunblocking_pin", s), s = ",";
if (aodf->pinflags.so_pin)
log_printf ("%sso_pin", s), s = ",";
if (aodf->pinflags.disable_allowed)
log_printf ("%sdisable_allowed", s), s = ",";
if (aodf->pinflags.integrity_protected)
log_printf ("%sintegrity_protected", s), s = ",";
if (aodf->pinflags.confidentiality_protected)
log_printf ("%sconfidentiality_protected", s), s = ",";
if (aodf->pinflags.exchange_ref_data)
log_printf ("%sexchange_ref_data", s), s = ",";
{
char numbuf[50];
switch (aodf->pintype)
{
case PIN_TYPE_BCD: s = "bcd"; break;
case PIN_TYPE_ASCII_NUMERIC: s = "ascii-numeric"; break;
case PIN_TYPE_UTF8: s = "utf8"; break;
case PIN_TYPE_HALF_NIBBLE_BCD: s = "half-nibble-bcd"; break;
case PIN_TYPE_ISO9564_1: s = "iso9564-1"; break;
default:
sprintf (numbuf, "%lu", (unsigned long)aodf->pintype);
s = numbuf;
}
log_printf (" type=%s", s);
}
log_printf ("\n");
}
/* Put it into the list. */
aodf->next = aodflist;
aodflist = aodf;
aodf = NULL;
continue; /* Ready. */
no_core:
err = gpg_error_from_syserror ();
release_aodf_object (aodf);
goto leave;
parse_error:
log_error ("p15: error parsing AODF record (%d): %s - skipped\n",
where, errstr? errstr : gpg_strerror (err));
err = 0;
release_aodf_object (aodf);
} /* End looping over all records. */
leave:
xfree (buffer);
if (err)
release_aodflist (aodflist);
else
*result = aodflist;
return err;
}
/* Print the BIT STRING with the tokenflags from the TokenInfo. */
static void
print_tokeninfo_tokenflags (const unsigned char *der, size_t derlen)
{
unsigned int bits, mask;
int i, unused, full;
int other = 0;
if (!derlen)
{
log_printf (" [invalid object]");
return;
}
unused = *der++; derlen--;
if ((!derlen && unused) || unused/8 > derlen)
{
log_printf (" [wrong encoding]");
return;
}
full = derlen - (unused+7)/8;
unused %= 8;
mask = 0;
for (i=1; unused; i <<= 1, unused--)
mask |= i;
/* First octet */
if (derlen)
{
bits = *der++; derlen--;
if (full)
full--;
else
{
bits &= ~mask;
mask = 0;
}
}
else
bits = 0;
if ((bits & 0x80)) log_printf (" readonly");
if ((bits & 0x40)) log_printf (" loginRequired");
if ((bits & 0x20)) log_printf (" prnGeneration");
if ((bits & 0x10)) log_printf (" eidCompliant");
if ((bits & 0x08)) other = 1;
if ((bits & 0x04)) other = 1;
if ((bits & 0x02)) other = 1;
if ((bits & 0x01)) other = 1;
/* Next octet. */
if (derlen)
other = 1;
if (other)
log_printf (" [unknown]");
}
/* Read and parse the EF(TokenInfo).
TokenInfo ::= SEQUENCE {
version INTEGER {v1(0)} (v1,...),
serialNumber OCTET STRING,
manufacturerID Label OPTIONAL,
label [0] Label OPTIONAL,
tokenflags TokenFlags,
seInfo SEQUENCE OF SecurityEnvironmentInfo OPTIONAL,
recordInfo [1] RecordInfo OPTIONAL,
supportedAlgorithms [2] SEQUENCE OF AlgorithmInfo OPTIONAL,
...,
issuerId [3] Label OPTIONAL,
holderId [4] Label OPTIONAL,
lastUpdate [5] LastUpdate OPTIONAL,
preferredLanguage PrintableString OPTIONAL -- In accordance with
-- IETF RFC 1766
} (CONSTRAINED BY { -- Each AlgorithmInfo.reference value must be unique --})
TokenFlags ::= BIT STRING {
readOnly (0),
loginRequired (1),
prnGeneration (2),
eidCompliant (3)
}
5032:
30 31 02 01 00 04 04 05 45 36 9F 0C 0C 44 2D 54 01......E6...D-T
72 75 73 74 20 47 6D 62 48 80 14 4F 66 66 69 63 rust GmbH..Offic
65 20 69 64 65 6E 74 69 74 79 20 63 61 72 64 03 e identity card.
02 00 40 20 63 61 72 64 03 02 00 40 00 00 00 00 ..@ card...@....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0 49: SEQUENCE {
2 1: INTEGER 0
5 4: OCTET STRING 05 45 36 9F
11 12: UTF8String 'D-Trust GmbH'
25 20: [0] 'Office identity card'
47 2: BIT STRING
: '00000010'B (bit 1)
: Error: Spurious zero bits in bitstring.
: }
*/
static gpg_error_t
read_ef_tokeninfo (app_t app)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
unsigned long ul;
xfree (app->app_local->manufacturer_id);
app->app_local->manufacturer_id = NULL;
app->app_local->card_product = CARD_PRODUCT_UNKNOWN;
err = select_and_read_binary (app->slot, 0x5032, "TokenInfo",
&buffer, &buflen);
if (err)
return err;
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("p15: error parsing TokenInfo: %s\n", gpg_strerror (err));
goto leave;
}
n = objlen;
/* Version. */
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_INTEGER))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto leave;
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*p++) & 0xff;
n--;
}
if (ul)
{
log_error ("p15: invalid version %lu in TokenInfo\n", ul);
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
if (opt.verbose)
log_info ("p15: TokenInfo:\n");
/* serialNumber. */
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_OCTET_STRING || !objlen))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto leave;
xfree (app->app_local->serialno);
app->app_local->serialno = xtrymalloc (objlen);
if (!app->app_local->serialno)
{
err = gpg_error_from_syserror ();
goto leave;
}
memcpy (app->app_local->serialno, p, objlen);
app->app_local->serialnolen = objlen;
if (opt.verbose)
{
/* (We use a separate log_info to avoid the "DBG:" prefix.) */
log_info ("p15: serialNumber .: ");
log_printhex (p, objlen, "");
}
p += objlen;
n -= objlen;
/* Is there an optional manufacturerID? */
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || !objlen))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto leave;
if (class == CLASS_UNIVERSAL && tag == TAG_UTF8_STRING)
{
if (opt.verbose)
log_info ("p15: manufacturerID: %.*s\n", (int)objlen, p);
app->app_local->manufacturer_id = percent_data_escape (0, NULL,
p, objlen);
p += objlen;
n -= objlen;
/* Get next TLV. */
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || !objlen))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto leave;
}
if (class == CLASS_CONTEXT && tag == 0)
{
if (opt.verbose)
log_info ("p15: label ........: %.*s\n", (int)objlen, p);
if (objlen > 15 && !memcmp (p, "D-TRUST Card V3", 15)
&& app->app_local->card_type == CARD_TYPE_CARDOS_50)
app->app_local->card_product = CARD_PRODUCT_DTRUST;
p += objlen;
n -= objlen;
/* Get next TLV. */
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || !objlen))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto leave;
}
/* The next is the mandatory tokenflags object. */
if (class == CLASS_UNIVERSAL && tag == TAG_BIT_STRING)
{
if (opt.verbose)
{
log_info ("p15: tokenflags ...:");
print_tokeninfo_tokenflags (p, objlen);
log_printf ("\n");
}
p += objlen;
n -= objlen;
}
leave:
xfree (buffer);
return err;
}
/* Get all the basic information from the pkcs#15 card, check the
structure and initialize our local context. This is used once at
application initialization. */
static gpg_error_t
read_p15_info (app_t app)
{
gpg_error_t err;
if (!read_ef_tokeninfo (app))
{
/* If we don't have a serial number yet but the TokenInfo provides
one, use that. */
if (!app->serialno && app->app_local->serialno)
{
app->serialno = app->app_local->serialno;
app->serialnolen = app->app_local->serialnolen;
app->app_local->serialno = NULL;
app->app_local->serialnolen = 0;
err = app_munge_serialno (app);
if (err)
return err;
}
}
/* Read the ODF so that we know the location of all directory
files. */
/* Fixme: We might need to get a non-standard ODF FID from TokenInfo. */
err = read_ef_odf (app, 0x5031);
if (err)
return err;
/* Read certificate information. */
assert (!app->app_local->certificate_info);
assert (!app->app_local->trusted_certificate_info);
assert (!app->app_local->useful_certificate_info);
err = read_ef_cdf (app, app->app_local->odf.certificates,
&app->app_local->certificate_info);
if (!err || gpg_err_code (err) == GPG_ERR_NO_DATA)
err = read_ef_cdf (app, app->app_local->odf.trusted_certificates,
&app->app_local->trusted_certificate_info);
if (!err || gpg_err_code (err) == GPG_ERR_NO_DATA)
err = read_ef_cdf (app, app->app_local->odf.useful_certificates,
&app->app_local->useful_certificate_info);
if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0;
if (err)
return err;
/* Read information about private keys. */
assert (!app->app_local->private_key_info);
err = read_ef_prkdf (app, app->app_local->odf.private_keys,
&app->app_local->private_key_info);
if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0;
if (err)
return err;
/* Read information about authentication objects. */
assert (!app->app_local->auth_object_info);
err = read_ef_aodf (app, app->app_local->odf.auth_objects,
&app->app_local->auth_object_info);
if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0;
return err;
}
/* Helper to do_learn_status: Send information about all certificates
listed in CERTINFO back. Use CERTTYPE as type of the
certificate. */
static gpg_error_t
send_certinfo (app_t app, ctrl_t ctrl, const char *certtype,
cdf_object_t certinfo)
{
for (; certinfo; certinfo = certinfo->next)
{
char *buf, *p;
buf = xtrymalloc (9 + certinfo->objidlen*2 + 1);
if (!buf)
return gpg_error_from_syserror ();
p = stpcpy (buf, "P15");
if (app->app_local->home_df)
{
snprintf (p, 6, "-%04X",
(unsigned int)(app->app_local->home_df & 0xffff));
p += 5;
}
p = stpcpy (p, ".");
bin2hex (certinfo->objid, certinfo->objidlen, p);
send_status_info (ctrl, "CERTINFO",
certtype, strlen (certtype),
buf, strlen (buf),
NULL, (size_t)0);
xfree (buf);
}
return 0;
}
/* Get the keygrip of the private key object PRKDF. On success the
* keygrip, the algo and the length are stored in the KEYGRIP,
* KEYALGO, and KEYNBITS fields of the PRKDF object. */
static gpg_error_t
keygrip_from_prkdf (app_t app, prkdf_object_t prkdf)
{
gpg_error_t err;
cdf_object_t cdf;
unsigned char *der;
size_t derlen;
ksba_cert_t cert;
gcry_sexp_t s_pkey = NULL;
/* Easy if we got a cached version. */
if (prkdf->keygrip_valid)
return 0;
xfree (prkdf->common_name);
prkdf->common_name = NULL;
xfree (prkdf->serial_number);
prkdf->serial_number = NULL;
/* FIXME: We should check whether a public key directory file and a
matching public key for PRKDF is available. This should make
extraction of the key much easier. My current test card doesn't
have one, so we can only use the fallback solution by looking for
a matching certificate and extract the key from there. */
/* Look for a matching certificate. A certificate matches if the Id
matches the one of the private key info. */
for (cdf = app->app_local->certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == prkdf->objidlen
&& !memcmp (cdf->objid, prkdf->objid, prkdf->objidlen))
break;
if (!cdf)
for (cdf = app->app_local->trusted_certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == prkdf->objidlen
&& !memcmp (cdf->objid, prkdf->objid, prkdf->objidlen))
break;
if (!cdf)
for (cdf = app->app_local->useful_certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == prkdf->objidlen
&& !memcmp (cdf->objid, prkdf->objid, prkdf->objidlen))
break;
if (!cdf)
{
err = gpg_error (GPG_ERR_NOT_FOUND);
goto leave;
}
err = readcert_by_cdf (app, cdf, &der, &derlen);
if (err)
goto leave;
err = ksba_cert_new (&cert);
if (!err)
err = ksba_cert_init_from_mem (cert, der, derlen);
xfree (der);
if (!err)
- err = app_help_get_keygrip_string (cert, prkdf->keygrip, &s_pkey);
+ err = app_help_get_keygrip_string (cert, prkdf->keygrip, &s_pkey, NULL);
if (!err)
{
/* Try to get the CN and the SerialNumber from the certificate;
* we use a very simple approach here which should work in many
* cases. Eventually we should add a rfc-2253 parser into
* libksba to make it easier to parse such a string.
*
* First example string:
* "CN=Otto Schily,O=Miniluv,C=DE"
* Second example string:
* "2.5.4.5=#445452323030303236333531,2.5.4.4=#4B6F6368,"
* "2.5.4.42=#5765726E6572,CN=Werner Koch,OU=For testing"
* " purposes only!,O=Testorganisation,C=DE"
*/
char *dn = ksba_cert_get_subject (cert, 0);
if (dn)
{
char *p, *pend, *buf;
p = strstr (dn, "CN=");
if (p && (p==dn || p[-1] == ','))
{
p += 3;
if (!(pend = strchr (p, ',')))
pend = p + strlen (p);
if (pend && pend > p
&& (prkdf->common_name = xtrymalloc ((pend - p) + 1)))
{
memcpy (prkdf->common_name, p, pend-p);
prkdf->common_name[pend-p] = 0;
}
}
p = strstr (dn, "2.5.4.5=#"); /* OID of the SerialNumber */
if (p && (p==dn || p[-1] == ','))
{
p += 9;
if (!(pend = strchr (p, ',')))
pend = p + strlen (p);
if (pend && pend > p
&& (buf = xtrymalloc ((pend - p) + 1)))
{
memcpy (buf, p, pend-p);
buf[pend-p] = 0;
if (!hex2str (buf, buf, strlen (buf)+1, NULL))
xfree (buf); /* Invalid hex encoding. */
else
prkdf->serial_number = buf;
}
}
ksba_free (dn);
}
}
ksba_cert_release (cert);
if (err)
goto leave;
prkdf->keyalgo = get_pk_algo_from_key (s_pkey);
if (!prkdf->keyalgo)
{
err = gpg_error (GPG_ERR_PUBKEY_ALGO);
goto leave;
}
prkdf->keynbits = gcry_pk_get_nbits (s_pkey);
if (!prkdf->keynbits)
{
err = gpg_error (GPG_ERR_PUBKEY_ALGO);
goto leave;
}
prkdf->keygrip_valid = 1; /* Yeah, got everything. */
leave:
gcry_sexp_release (s_pkey);
return err;
}
/* Return a malloced keyref string for PRKDF. Returns NULL on
* malloc failure. */
static char *
keyref_from_prkdf (app_t app, prkdf_object_t prkdf)
{
char *buf, *p;
buf = xtrymalloc (4 + 5 + prkdf->objidlen*2 + 1);
if (!buf)
return NULL;
p = stpcpy (buf, "P15");
if (app->app_local->home_df)
{
snprintf (p, 6, "-%04X",
(unsigned int)(app->app_local->home_df & 0xffff));
p += 5;
}
p = stpcpy (p, ".");
bin2hex (prkdf->objid, prkdf->objidlen, p);
return buf;
}
/* Helper to do_learn_status: Send information about all known
keypairs back. FIXME: much code duplication from
send_certinfo(). */
static gpg_error_t
send_keypairinfo (app_t app, ctrl_t ctrl, prkdf_object_t prkdf)
{
gpg_error_t err;
for (; prkdf; prkdf = prkdf->next)
{
char *buf;
int j;
buf = keyref_from_prkdf (app, prkdf);
if (!buf)
return gpg_error_from_syserror ();
err = keygrip_from_prkdf (app, prkdf);
if (err)
{
log_error ("p15: error getting keygrip from ");
for (j=0; j < prkdf->pathlen; j++)
log_printf ("%s%04hX", j?"/":"", prkdf->path[j]);
log_printf (": %s\n", gpg_strerror (err));
}
else
{
char usage[5];
size_t usagelen = 0;
if (prkdf->usageflags.sign
|| prkdf->usageflags.sign_recover
|| prkdf->usageflags.non_repudiation)
usage[usagelen++] = 's';
if (prkdf->usageflags.sign
|| prkdf->usageflags.sign_recover)
usage[usagelen++] = 'c';
if (prkdf->usageflags.decrypt
|| prkdf->usageflags.unwrap)
usage[usagelen++] = 'e';
if (prkdf->usageflags.sign
|| prkdf->usageflags.sign_recover)
usage[usagelen++] = 'a';
log_assert (strlen (prkdf->keygrip) == 40);
send_status_info (ctrl, "KEYPAIRINFO",
prkdf->keygrip, 2*KEYGRIP_LEN,
buf, strlen (buf),
usage, usagelen,
NULL, (size_t)0);
}
xfree (buf);
}
return 0;
}
/* This is the handler for the LEARN command. */
static gpg_error_t
do_learn_status (app_t app, ctrl_t ctrl, unsigned int flags)
{
gpg_error_t err;
if ((flags & 1))
err = 0;
else
{
err = do_getattr (app, ctrl, "MANUFACTURER");
if (!err)
err = send_certinfo (app, ctrl, "100",
app->app_local->certificate_info);
if (!err)
err = send_certinfo (app, ctrl, "101",
app->app_local->trusted_certificate_info);
if (!err)
err = send_certinfo (app, ctrl, "102",
app->app_local->useful_certificate_info);
}
if (!err)
err = send_keypairinfo (app, ctrl, app->app_local->private_key_info);
return err;
}
/* Read a certifciate using the information in CDF and return the
certificate in a newly llocated buffer R_CERT and its length
R_CERTLEN. */
static gpg_error_t
readcert_by_cdf (app_t app, cdf_object_t cdf,
unsigned char **r_cert, size_t *r_certlen)
{
gpg_error_t err;
unsigned char *buffer = NULL;
const unsigned char *p, *save_p;
size_t buflen, n;
int class, tag, constructed, ndef;
size_t totobjlen, objlen, hdrlen;
int rootca;
int i;
*r_cert = NULL;
*r_certlen = 0;
/* First check whether it has been cached. */
if (cdf->image)
{
*r_cert = xtrymalloc (cdf->imagelen);
if (!*r_cert)
return gpg_error_from_syserror ();
memcpy (*r_cert, cdf->image, cdf->imagelen);
*r_certlen = cdf->imagelen;
return 0;
}
/* Read the entire file. fixme: This could be optimized by first
reading the header to figure out how long the certificate
actually is. */
err = select_ef_by_path (app, cdf->path, cdf->pathlen);
if (err)
goto leave;
err = iso7816_read_binary_ext (app_get_slot (app), 1, cdf->off, cdf->len,
&buffer, &buflen, NULL);
if (!err && (!buflen || *buffer == 0xff))
err = gpg_error (GPG_ERR_NOT_FOUND);
if (err)
{
log_error ("p15: error reading certificate id=");
for (i=0; i < cdf->objidlen; i++)
log_printf ("%02X", cdf->objid[i]);
log_printf (" at ");
for (i=0; i < cdf->pathlen; i++)
log_printf ("%s%04hX", i? "/":"", cdf->path[i]);
log_printf (": %s\n", gpg_strerror (err));
goto leave;
}
/* Check whether this is really a certificate. */
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if (class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed)
rootca = 0;
else if ( class == CLASS_UNIVERSAL && tag == TAG_SET && constructed )
rootca = 1;
else
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
totobjlen = objlen + hdrlen;
assert (totobjlen <= buflen);
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if (!rootca
&& class == CLASS_UNIVERSAL && tag == TAG_OBJECT_ID && !constructed)
{
/* The certificate seems to be contained in a userCertificate
container. Skip this and assume the following sequence is
the certificate. */
if (n < objlen)
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
p += objlen;
n -= objlen;
save_p = p;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if ( !(class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed) )
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
totobjlen = objlen + hdrlen;
assert (save_p + totobjlen <= buffer + buflen);
memmove (buffer, save_p, totobjlen);
}
*r_cert = buffer;
buffer = NULL;
*r_certlen = totobjlen;
/* Try to cache it. */
if (!cdf->image && (cdf->image = xtrymalloc (*r_certlen)))
{
memcpy (cdf->image, *r_cert, *r_certlen);
cdf->imagelen = *r_certlen;
}
leave:
xfree (buffer);
return err;
}
/* Handler for the READCERT command.
Read the certificate with id CERTID (as returned by learn_status in
the CERTINFO status lines) and return it in the freshly allocated
buffer to be stored at R_CERT and its length at R_CERTLEN. A error
code will be returned on failure and R_CERT and R_CERTLEN will be
set to (NULL,0). */
static gpg_error_t
do_readcert (app_t app, const char *certid,
unsigned char **r_cert, size_t *r_certlen)
{
gpg_error_t err;
cdf_object_t cdf;
*r_cert = NULL;
*r_certlen = 0;
err = cdf_object_from_certid (app, certid, &cdf);
if (!err)
err = readcert_by_cdf (app, cdf, r_cert, r_certlen);
return err;
}
/* Implement the GETATTR command. This is similar to the LEARN
command but returns just one value via the status interface. */
static gpg_error_t
do_getattr (app_t app, ctrl_t ctrl, const char *name)
{
gpg_error_t err;
prkdf_object_t prkdf;
if (!strcmp (name, "$AUTHKEYID")
|| !strcmp (name, "$ENCRKEYID")
|| !strcmp (name, "$SIGNKEYID"))
{
char *buf;
/* We return the ID of the first private key capable of the
* requested action. Note that we do not yet return
* non_repudiation keys for $SIGNKEYID because our D-Trust
* testcard uses rsaPSS, which is not supported by gpgsm and not
* covered by the VS-NfD approval. */
for (prkdf = app->app_local->private_key_info; prkdf;
prkdf = prkdf->next)
{
if (name[1] == 'A' && (prkdf->usageflags.sign
|| prkdf->usageflags.sign_recover))
break;
else if (name[1] == 'E' && (prkdf->usageflags.decrypt
|| prkdf->usageflags.unwrap))
break;
else if (name[1] == 'S' && (prkdf->usageflags.sign
|| prkdf->usageflags.sign_recover))
break;
}
if (prkdf)
{
buf = keyref_from_prkdf (app, prkdf);
if (!buf)
return gpg_error_from_syserror ();
send_status_info (ctrl, name, buf, strlen (buf), NULL, 0);
xfree (buf);
}
return 0;
}
else if (!strcmp (name, "$DISPSERIALNO"))
{
/* For certain cards we return special IDs. There is no
general rule for it so we need to decide case by case. */
if (app->app_local->card_type == CARD_TYPE_BELPIC)
{
/* The eID card has a card number printed on the front matter
which seems to be a good indication. */
unsigned char *buffer;
const unsigned char *p;
size_t buflen, n;
unsigned short path[] = { 0x3F00, 0xDF01, 0x4031 };
err = select_ef_by_path (app, path, DIM(path) );
if (!err)
err = iso7816_read_binary (app->slot, 0, 0, &buffer, &buflen);
if (err)
{
log_error ("p15: error accessing EF(ID): %s\n",
gpg_strerror (err));
return err;
}
p = find_tlv (buffer, buflen, 1, &n);
if (p && n == 12)
{
char tmp[12+2+1];
memcpy (tmp, p, 3);
tmp[3] = '-';
memcpy (tmp+4, p+3, 7);
tmp[11] = '-';
memcpy (tmp+12, p+10, 2);
tmp[14] = 0;
send_status_info (ctrl, name, tmp, strlen (tmp), NULL, 0);
xfree (buffer);
return 0;
}
xfree (buffer);
}
else
{
/* We use the first private key object which has a serial
* number set. If none was found, we parse the first
* object and see whether this has then a serial number. */
for (prkdf = app->app_local->private_key_info; prkdf;
prkdf = prkdf->next)
if (prkdf->serial_number)
break;
if (!prkdf && app->app_local->private_key_info)
{
prkdf = app->app_local->private_key_info;
keygrip_from_prkdf (app, prkdf);
if (!prkdf->serial_number)
prkdf = NULL;
}
if (prkdf)
{
char *sn = get_dispserialno (app, prkdf);
/* Unless there is a bogus S/N in the cert we should
* have a suitable one from the cert here now. */
err = send_status_printf (ctrl, name, "%s", sn);
xfree (sn);
return err;
}
}
/* No abbreviated serial number. */
}
else if (!strcmp (name, "MANUFACTURER"))
{
if (app->app_local->manufacturer_id)
return send_status_printf (ctrl, "MANUFACTURER", "0 %s",
app->app_local->manufacturer_id);
else
return 0;
}
return gpg_error (GPG_ERR_INV_NAME);
}
/* Micardo cards require special treatment. This is a helper for the
crypto functions to manage the security environment. We expect that
the key file has already been selected. FID is the one of the
selected key. */
static gpg_error_t
micardo_mse (app_t app, unsigned short fid)
{
gpg_error_t err;
int recno;
unsigned short refdata = 0;
int se_num;
unsigned char msebuf[10];
/* Read the KeyD file containing extra information on keys. */
err = iso7816_select_file (app->slot, 0x0013, 0);
if (err)
{
log_error ("p15: error reading EF_keyD: %s\n", gpg_strerror (err));
return err;
}
for (recno = 1, se_num = -1; ; recno++)
{
unsigned char *buffer;
size_t buflen;
size_t n, nn;
const unsigned char *p, *pp;
err = iso7816_read_record (app->slot, recno, 1, 0, &buffer, &buflen);
if (gpg_err_code (err) == GPG_ERR_NOT_FOUND)
break; /* ready */
if (err)
{
log_error ("p15: error reading EF_keyD record: %s\n",
gpg_strerror (err));
return err;
}
if (opt.verbose)
{
log_info (buffer, buflen, "p15: keyD record: ");
log_printhex (buffer, buflen, "");
}
p = find_tlv (buffer, buflen, 0x83, &n);
if (p && n == 4 && ((p[2]<<8)|p[3]) == fid)
{
refdata = ((p[0]<<8)|p[1]);
/* Locate the SE DO and the there included sec env number. */
p = find_tlv (buffer, buflen, 0x7b, &n);
if (p && n)
{
pp = find_tlv (p, n, 0x80, &nn);
if (pp && nn == 1)
{
se_num = *pp;
xfree (buffer);
break; /* found. */
}
}
}
xfree (buffer);
}
if (se_num == -1)
{
log_error ("p15: CRT for keyfile %04hX not found\n", fid);
return gpg_error (GPG_ERR_NOT_FOUND);
}
/* Restore the security environment to SE_NUM if needed */
if (se_num)
{
err = iso7816_manage_security_env (app->slot, 0xf3, se_num, NULL, 0);
if (err)
{
log_error ("p15: restoring SE to %d failed: %s\n",
se_num, gpg_strerror (err));
return err;
}
}
/* Set the DST reference data. */
msebuf[0] = 0x83;
msebuf[1] = 0x03;
msebuf[2] = 0x80;
msebuf[3] = (refdata >> 8);
msebuf[4] = refdata;
err = iso7816_manage_security_env (app->slot, 0x41, 0xb6, msebuf, 5);
if (err)
{
log_error ("p15: setting SE to reference file %04hX failed: %s\n",
refdata, gpg_strerror (err));
return err;
}
return 0;
}
/* Prepare the verification of the PIN for the key PRKDF by checking
* the AODF and selecting the key file. KEYREF is used for error
* messages. */
static gpg_error_t
prepare_verify_pin (app_t app, const char *keyref,
prkdf_object_t prkdf, aodf_object_t aodf)
{
gpg_error_t err;
int i;
if (opt.verbose)
{
log_info ("p15: using AODF %04hX id=", aodf->fid);
for (i=0; i < aodf->objidlen; i++)
log_printf ("%02X", aodf->objid[i]);
log_printf ("\n");
}
if (aodf->authid && opt.verbose)
log_info ("p15: PIN is controlled by another authentication token\n");
if (aodf->pinflags.integrity_protected
|| aodf->pinflags.confidentiality_protected)
{
log_error ("p15: "
"PIN verification requires unsupported protection method\n");
return gpg_error (GPG_ERR_BAD_PIN_METHOD);
}
if (!aodf->stored_length && aodf->pinflags.needs_padding)
{
log_error ("p15: "
"PIN verification requires padding but no length known\n");
return gpg_error (GPG_ERR_INV_CARD);
}
if (app->app_local->card_product == CARD_PRODUCT_DTRUST)
{
/* According to our protocol analysis we need to select a
* special AID here. Before that the master file needs to be
* selected. (RID A000000167 is assigned to IBM) */
static char const dtrust_aid[] =
{ 0xA0, 0x00, 0x00, 0x01, 0x67, 0x45, 0x53, 0x49, 0x47, 0x4E };
err = iso7816_select_mf (app_get_slot (app));
if (!err)
err = iso7816_select_application (app_get_slot (app),
dtrust_aid, sizeof dtrust_aid, 0);
if (err)
log_error ("p15: error selecting D-TRUST's AID for key %s: %s\n",
keyref, gpg_strerror (err));
}
else
{
/* Standard case: Select the key file. Note that this may
* change the security environment thus we need to do it before
* PIN verification. */
err = select_ef_by_path (app, prkdf->path, prkdf->pathlen);
if (err)
log_error ("p15: error selecting file for key %s: %s\n",
keyref, gpg_strerror (err));
}
return err;
}
static int
any_control_or_space (const char *string)
{
const unsigned char *s;
for (s = string; *string; string++)
if (*s <= 0x20 || *s >= 0x7f)
return 1;
return 0;
}
/* Return a malloced serial number to be shown to the user. PRKDF is
* used to get it from a certificate; PRKDF may be NULL. */
static char *
get_dispserialno (app_t app, prkdf_object_t prkdf)
{
char *serial;
/* We prefer the SerialNumber RDN from the Subject-DN but we don't
* use it if it features a percent sign (special character in pin
* prompts) or has any control character. */
if (prkdf && prkdf->serial_number && *prkdf->serial_number
&& !strchr (prkdf->serial_number, '%')
&& !any_control_or_space (prkdf->serial_number))
{
serial = xtrystrdup (prkdf->serial_number);
}
else
{
serial = app_get_serialno (app);
}
return serial;
}
/* Return an allocated string to be used as prompt. Returns NULL on
* malloc error. */
static char *
make_pin_prompt (app_t app, int remaining, const char *firstline,
prkdf_object_t prkdf)
{
char *serial, *tmpbuf, *result;
serial = get_dispserialno (app, prkdf);
/* TRANSLATORS: Put a \x1f right before a colon. This can be
* used by pinentry to nicely align the names and values. Keep
* the %s at the start and end of the string. */
result = xtryasprintf (_("%s"
"Number\x1f: %s%%0A"
"Holder\x1f: %s"
"%s"),
"\x1e",
serial,
prkdf->common_name? prkdf->common_name: "",
"");
xfree (serial);
if (!result)
return NULL; /* Out of core. */
/* Append a "remaining attempts" info if needed. */
if (remaining != -1 && remaining < 3)
{
char *rembuf;
/* TRANSLATORS: This is the number of remaining attempts to
* enter a PIN. Use %%0A (double-percent,0A) for a linefeed. */
rembuf = xtryasprintf (_("Remaining attempts: %d"), remaining);
if (rembuf)
{
tmpbuf = strconcat (firstline, "%0A%0A", result,
"%0A%0A", rembuf, NULL);
xfree (rembuf);
}
else
tmpbuf = NULL;
xfree (result);
result = tmpbuf;
}
else
{
tmpbuf = strconcat (firstline, "%0A%0A", result, NULL);
xfree (result);
result = tmpbuf;
}
return result;
}
/* Given the private key object PRKDF and its authentication object
* AODF ask for the PIN and verify that PIN. */
static gpg_error_t
verify_pin (app_t app,
gpg_error_t (*pincb)(void*, const char *, char **), void *pincb_arg,
prkdf_object_t prkdf, aodf_object_t aodf)
{
gpg_error_t err;
char *pinvalue;
size_t pinvaluelen;
const char *label;
const char *errstr;
const char *s;
int remaining;
int pin_reference;
int i;
if (!aodf)
return 0;
pin_reference = aodf->pin_reference_valid? aodf->pin_reference : 0;
if (app->app_local->card_type == CARD_TYPE_CARDOS_50)
{
/* We know that this card supports a verify status check. Note
* that in contrast to PIV cards ISO7816_VERIFY_NOT_NEEDED is
* not supported. */
remaining = iso7816_verify_status (app_get_slot (app), pin_reference);
if (remaining < 0)
remaining = -1; /* We don't care about the concrete error. */
if (remaining < 3)
{
if (remaining >= 0)
log_info ("p15: PIN has %d attempts left\n", remaining);
/* On error or if less than 3 better ask. */
prkdf->pin_verified = 0;
}
}
else
remaining = -1; /* Unknown. */
/* Check whether we already verified it. */
if (prkdf->pin_verified)
return 0; /* Already done. */
if (prkdf->usageflags.non_repudiation
&& (app->app_local->card_type == CARD_TYPE_BELPIC
|| app->app_local->card_product == CARD_PRODUCT_DTRUST))
label = _("||Please enter the PIN for the key to create "
"qualified signatures.");
else
label = _("||Please enter the PIN for the standard keys.");
{
char *prompt = make_pin_prompt (app, remaining, label, prkdf);
if (!prompt)
err = gpg_error_from_syserror ();
else
err = pincb (pincb_arg, prompt, &pinvalue);
xfree (prompt);
}
if (err)
{
log_info ("p15: PIN callback returned error: %s\n", gpg_strerror (err));
return err;
}
/* We might need to cope with UTF8 things here. Not sure how
min_length etc. are exactly defined, for now we take them as
a plain octet count. */
if (strlen (pinvalue) < aodf->min_length)
{
log_error ("p15: PIN is too short; minimum length is %lu\n",
aodf->min_length);
err = gpg_error (GPG_ERR_BAD_PIN);
}
else if (aodf->stored_length && strlen (pinvalue) > aodf->stored_length)
{
/* This would otherwise truncate the PIN silently. */
log_error ("p15: PIN is too large; maximum length is %lu\n",
aodf->stored_length);
err = gpg_error (GPG_ERR_BAD_PIN);
}
else if (aodf->max_length_valid && strlen (pinvalue) > aodf->max_length)
{
log_error ("p15: PIN is too large; maximum length is %lu\n",
aodf->max_length);
err = gpg_error (GPG_ERR_BAD_PIN);
}
if (err)
{
xfree (pinvalue);
return err;
}
errstr = NULL;
err = 0;
switch (aodf->pintype)
{
case PIN_TYPE_BCD:
case PIN_TYPE_ASCII_NUMERIC:
for (s=pinvalue; digitp (s); s++)
;
if (*s)
{
errstr = "Non-numeric digits found in PIN";
err = gpg_error (GPG_ERR_BAD_PIN);
}
break;
case PIN_TYPE_UTF8:
break;
case PIN_TYPE_HALF_NIBBLE_BCD:
errstr = "PIN type Half-Nibble-BCD is not supported";
break;
case PIN_TYPE_ISO9564_1:
errstr = "PIN type ISO9564-1 is not supported";
break;
default:
errstr = "Unknown PIN type";
break;
}
if (errstr)
{
log_error ("p15: can't verify PIN: %s\n", errstr);
xfree (pinvalue);
return err? err : gpg_error (GPG_ERR_BAD_PIN_METHOD);
}
if (aodf->pintype == PIN_TYPE_BCD )
{
char *paddedpin;
int ndigits;
for (ndigits=0, s=pinvalue; *s; ndigits++, s++)
;
paddedpin = xtrymalloc (aodf->stored_length+1);
if (!paddedpin)
{
err = gpg_error_from_syserror ();
xfree (pinvalue);
return err;
}
i = 0;
paddedpin[i++] = 0x20 | (ndigits & 0x0f);
for (s=pinvalue; i < aodf->stored_length && *s && s[1]; s = s+2 )
paddedpin[i++] = (((*s - '0') << 4) | ((s[1] - '0') & 0x0f));
if (i < aodf->stored_length && *s)
paddedpin[i++] = (((*s - '0') << 4)
|((aodf->pad_char_valid?aodf->pad_char:0)&0x0f));
if (aodf->pinflags.needs_padding)
{
while (i < aodf->stored_length)
paddedpin[i++] = aodf->pad_char_valid? aodf->pad_char : 0;
}
xfree (pinvalue);
pinvalue = paddedpin;
pinvaluelen = i;
}
else if (aodf->pinflags.needs_padding)
{
char *paddedpin;
paddedpin = xtrymalloc (aodf->stored_length+1);
if (!paddedpin)
{
err = gpg_error_from_syserror ();
xfree (pinvalue);
return err;
}
for (i=0, s=pinvalue; i < aodf->stored_length && *s; i++, s++)
paddedpin[i] = *s;
/* Not sure what padding char to use if none has been set.
For now we use 0x00; maybe a space would be better. */
for (; i < aodf->stored_length; i++)
paddedpin[i] = aodf->pad_char_valid? aodf->pad_char : 0;
paddedpin[i] = 0;
pinvaluelen = i;
xfree (pinvalue);
pinvalue = paddedpin;
}
else
pinvaluelen = strlen (pinvalue);
/* log_printhex (pinvalue, pinvaluelen, */
/* "about to verify with ref %lu pin:", pin_reference); */
err = iso7816_verify (app_get_slot (app), pin_reference,
pinvalue, pinvaluelen);
xfree (pinvalue);
if (err)
{
log_error ("p15: PIN verification failed: %s\n", gpg_strerror (err));
return err;
}
if (opt.verbose)
log_info ("p15: PIN verification succeeded\n");
prkdf->pin_verified = 1;
return 0;
}
/* Handler for the PKSIGN command.
Create the signature and return the allocated result in OUTDATA.
If a PIN is required, the PINCB will be used to ask for the PIN;
that callback should return the PIN in an allocated buffer and
store that as the 3rd argument. */
static gpg_error_t
do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
static unsigned char sha256_prefix[19] = /* OID: 2.16.840.1.101.3.4.2.1 */
{ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48,
0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20 };
static unsigned char sha1_prefix[15] = /* Object ID is 1.3.14.3.2.26 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
static unsigned char rmd160_prefix[15] = /* Object ID is 1.3.36.3.2.1 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03,
0x02, 0x01, 0x05, 0x00, 0x04, 0x14 };
gpg_error_t err;
unsigned char data[32+19]; /* Must be large enough for a SHA-256 digest
* + the largest OID prefix above and also
* fit the 36 bytes of md5sha1. */
prkdf_object_t prkdf; /* The private key object. */
aodf_object_t aodf; /* The associated authentication object. */
int no_data_padding = 0; /* True if the card want the data without padding.*/
int mse_done = 0; /* Set to true if the MSE has been done. */
unsigned int hashlen; /* Length of the hash. */
unsigned int datalen; /* Length of the data to sign (prefix+hash). */
unsigned char *dataptr;
int exmode, le_value;
(void)ctrl;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
if (indatalen != 20 && indatalen != 16
&& indatalen != 35 && indatalen != 36
&& indatalen != (32+19))
return gpg_error (GPG_ERR_INV_VALUE);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!(prkdf->usageflags.sign || prkdf->usageflags.sign_recover
||prkdf->usageflags.non_repudiation))
{
log_error ("p15: key %s may not be used for signing\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
if (!prkdf->authid)
{
log_error ("p15: no authentication object defined for %s\n", keyidstr);
/* fixme: we might want to go ahead and do without PIN
verification. */
return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
}
/* Find the authentication object to this private key object. */
for (aodf = app->app_local->auth_object_info; aodf; aodf = aodf->next)
if (aodf->objidlen == prkdf->authidlen
&& !memcmp (aodf->objid, prkdf->authid, prkdf->authidlen))
break;
if (!aodf)
{
log_error ("p15: authentication object for %s missing\n", keyidstr);
return gpg_error (GPG_ERR_INV_CARD);
}
/* We need some more info about the key - get the keygrip to
* populate these fields. */
err = keygrip_from_prkdf (app, prkdf);
if (err)
{
log_error ("p15: keygrip_from_prkdf failed: %s\n", gpg_strerror (err));
return err;
}
/* Prepare PIN verification. This is split so that we can do
* MSE operation for some task after having selected the key file but
* before sending the verify APDU. */
err = prepare_verify_pin (app, keyidstr, prkdf, aodf);
if (err)
return err;
/* Due to the fact that the non-repudiation signature on a BELPIC
card requires a verify immediately before the DSO we set the
MSE before we do the verification. Other cards might also allow
this but I don't want to break anything, thus we do it only
for the BELPIC card here. */
if (app->app_local->card_type == CARD_TYPE_BELPIC)
{
unsigned char mse[5];
mse[0] = 4; /* Length of the template. */
mse[1] = 0x80; /* Algorithm reference tag. */
if (hashalgo == MD_USER_TLS_MD5SHA1)
mse[2] = 0x01; /* Let card do pkcs#1 0xFF padding. */
else
mse[2] = 0x02; /* RSASSA-PKCS1-v1.5 using SHA1. */
mse[3] = 0x84; /* Private key reference tag. */
mse[4] = prkdf->key_reference_valid? prkdf->key_reference : 0x82;
err = iso7816_manage_security_env (app->slot,
0x41, 0xB6,
mse, sizeof mse);
no_data_padding = 1;
mse_done = 1;
}
if (err)
{
log_error ("p15: MSE failed: %s\n", gpg_strerror (err));
return err;
}
/* Now that we have all the information available run the actual PIN
* verification.*/
err = verify_pin (app, pincb, pincb_arg, prkdf, aodf);
if (err)
return err;
/* Prepare the DER object from INDATA. */
if (indatalen == 36)
{
/* No ASN.1 container used. */
if (hashalgo != MD_USER_TLS_MD5SHA1)
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data, indata, indatalen);
datalen = hashlen = 36;
}
else if (indatalen == 35)
{
/* Alright, the caller was so kind to send us an already
prepared DER object. Check that it is what we want and that
it matches the hash algorithm. */
if (hashalgo == GCRY_MD_SHA1 && !memcmp (indata, sha1_prefix, 15))
;
else if (hashalgo == GCRY_MD_RMD160
&& !memcmp (indata, rmd160_prefix, 15))
;
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data, indata, indatalen);
datalen = 35;
hashlen = 20;
}
else if (indatalen == 32 + 19)
{
/* Seems to be a prepared SHA256 DER object. */
if (hashalgo == GCRY_MD_SHA256 && !memcmp (indata, sha256_prefix, 19))
;
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data, indata, indatalen);
datalen = 51;
hashlen = 32;
}
else
{
/* Need to prepend the prefix. */
if (hashalgo == GCRY_MD_SHA256)
{
memcpy (data, sha256_prefix, 19);
memcpy (data+19, indata, indatalen);
datalen = 51;
hashlen = 32;
}
else if (hashalgo == GCRY_MD_SHA1)
{
memcpy (data, sha1_prefix, 15);
memcpy (data+15, indata, indatalen);
datalen = 35;
hashlen = 20;
}
else if (hashalgo == GCRY_MD_RMD160)
{
memcpy (data, rmd160_prefix, 15);
memcpy (data+15, indata, indatalen);
datalen = 35;
hashlen = 20;
}
else
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
}
/* Manage security environment needs to be tweaked for certain cards. */
if (mse_done)
err = 0;
else if (app->app_local->card_type == CARD_TYPE_TCOS)
{
/* TCOS creates signatures always using the local key 0. MSE
may not be used. */
}
else if (app->app_local->card_type == CARD_TYPE_MICARDO)
{
if (!prkdf->pathlen)
err = gpg_error (GPG_ERR_BUG);
else
err = micardo_mse (app, prkdf->path[prkdf->pathlen-1]);
}
else if (prkdf->key_reference_valid)
{
unsigned char mse[3];
mse[0] = 0x84; /* Select asym. key. */
mse[1] = 1;
mse[2] = prkdf->key_reference;
err = iso7816_manage_security_env (app->slot,
0x41, 0xB6,
mse, sizeof mse);
}
if (err)
{
log_error ("p15: MSE failed: %s\n", gpg_strerror (err));
return err;
}
dataptr = data;
if (no_data_padding)
{
dataptr += datalen - hashlen;
datalen = hashlen;
}
if (prkdf->keyalgo == GCRY_PK_RSA && prkdf->keynbits > 2048)
{
exmode = 1;
le_value = prkdf->keynbits / 8;
}
else
{
exmode = 0;
le_value = 0;
}
err = iso7816_compute_ds (app_get_slot (app),
exmode, dataptr, datalen,
le_value, outdata, outdatalen);
return err;
}
/* Handler for the PKAUTH command.
This is basically the same as the PKSIGN command but we first check
that the requested key is suitable for authentication; that is, it
must match the criteria used for the attribute $AUTHKEYID. See
do_sign for calling conventions; there is no HASHALGO, though. */
static gpg_error_t
do_auth (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
gpg_error_t err;
prkdf_object_t prkdf;
int algo;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!prkdf->usageflags.sign)
{
log_error ("p15: key %s may not be used for authentication\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
algo = indatalen == 36? MD_USER_TLS_MD5SHA1 : GCRY_MD_SHA1;
return do_sign (app, ctrl, keyidstr, algo, pincb, pincb_arg,
indata, indatalen, outdata, outdatalen);
}
/* Handler for the PKDECRYPT command. Decrypt the data in INDATA and
* return the allocated result in OUTDATA. If a PIN is required the
* PINCB will be used to ask for the PIN; it should return the PIN in
* an allocated buffer and put it into PIN. */
static gpg_error_t
do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen,
unsigned int *r_info)
{
gpg_error_t err;
prkdf_object_t prkdf; /* The private key object. */
aodf_object_t aodf; /* The associated authentication object. */
int exmode, le_value, padind;
(void)ctrl;
(void)r_info;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
if (!indatalen || !indata || !outdatalen || !outdata)
return gpg_error (GPG_ERR_INV_ARG);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!(prkdf->usageflags.decrypt || prkdf->usageflags.unwrap))
{
log_error ("p15: key %s may not be used for decruption\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
/* Find the authentication object to this private key object. */
if (!prkdf->authid)
{
log_error ("p15: no authentication object defined for %s\n", keyidstr);
/* fixme: we might want to go ahead and do without PIN
verification. */
return gpg_error (GPG_ERR_UNSUPPORTED_OPERATION);
}
for (aodf = app->app_local->auth_object_info; aodf; aodf = aodf->next)
if (aodf->objidlen == prkdf->authidlen
&& !memcmp (aodf->objid, prkdf->authid, prkdf->authidlen))
break;
if (!aodf)
{
log_error ("p15: authentication object for %s missing\n", keyidstr);
return gpg_error (GPG_ERR_INV_CARD);
}
/* We need some more info about the key - get the keygrip to
* populate these fields. */
err = keygrip_from_prkdf (app, prkdf);
if (err)
{
log_error ("p15: keygrip_from_prkdf failed: %s\n", gpg_strerror (err));
return err;
}
/* Verify the PIN. */
err = prepare_verify_pin (app, keyidstr, prkdf, aodf);
if (!err)
err = verify_pin (app, pincb, pincb_arg, prkdf, aodf);
if (err)
return err;
/* The next is guess work for CardOS. */
if (app->app_local->card_product == CARD_PRODUCT_DTRUST)
{
/* From analyzing an USB trace of a Windows signing application
* we see that the SE is simply reset to 0x14. It seems to be
* sufficient to do this for decryption; signing still works
* with the standard code despite that our trace showed that
* there the SE is restored to 0x09. Note that the special
* D-Trust AID is in any case select by prepare_verify_pin.
*
* Hey, D-Trust please hand over the specs so that you can
* actually sell your cards and we can properly implement it;
* other vendors understand this and do not demand ridiculous
* paper work or complicated procedures to get samples. */
err = iso7816_manage_security_env (app_get_slot (app),
0xF3, 0x14, NULL, 0);
}
else if (prkdf->key_reference_valid)
{
unsigned char mse[6];
/* Note: This works with CardOS but the D-Trust card has the
* problem that the next created signature would be broken. */
mse[0] = 0x80; /* Algorithm reference. */
mse[1] = 1;
mse[2] = 0x0a; /* RSA, no padding. */
mse[3] = 0x84;
mse[4] = 1;
mse[5] = prkdf->key_reference;
err = iso7816_manage_security_env (app_get_slot (app), 0x41, 0xB8,
mse, sizeof mse);
}
/* Check for MSE error. */
if (err)
{
log_error ("p15: MSE failed: %s\n", gpg_strerror (err));
return err;
}
exmode = le_value = 0;
padind = 0;
if (prkdf->keyalgo == GCRY_PK_RSA && prkdf->keynbits > 2048)
{
exmode = 1; /* Extended length w/o a limit. */
le_value = prkdf->keynbits / 8;
}
if (app->app_local->card_product == CARD_PRODUCT_DTRUST)
padind = 0x81;
err = iso7816_decipher (app_get_slot (app), exmode,
indata, indatalen,
le_value, padind,
outdata, outdatalen);
return err;
}
/* Assume that EF(DIR) has been selected. Read its content and figure
out the home EF of pkcs#15. Return that home DF or 0 if not found
and the value at the address of BELPIC indicates whether it was
found by the belpic aid. */
static unsigned short
read_home_df (int slot, int *r_belpic)
{
gpg_error_t err;
unsigned char *buffer;
const unsigned char *p, *pp;
size_t buflen, n, nn;
unsigned short result = 0;
*r_belpic = 0;
err = iso7816_read_binary (slot, 0, 0, &buffer, &buflen);
if (err)
{
log_error ("p15: error reading EF(DIR): %s\n", gpg_strerror (err));
return 0;
}
/* FIXME: We need to scan all records. */
p = find_tlv (buffer, buflen, 0x61, &n);
if (p && n)
{
pp = find_tlv (p, n, 0x4f, &nn);
if (pp && ((nn == sizeof pkcs15_aid && !memcmp (pp, pkcs15_aid, nn))
|| (*r_belpic = (nn == sizeof pkcs15be_aid
&& !memcmp (pp, pkcs15be_aid, nn)))))
{
pp = find_tlv (p, n, 0x50, &nn);
if (pp && opt.verbose)
log_info ("p15: application label from EF(DIR) is '%.*s'\n",
(int)nn, pp);
pp = find_tlv (p, n, 0x51, &nn);
if (pp && nn == 4 && *pp == 0x3f && !pp[1])
{
result = ((pp[2] << 8) | pp[3]);
if (opt.verbose)
log_info ("p15: application directory is 0x%04hX\n", result);
}
}
}
xfree (buffer);
return result;
}
/*
Select the PKCS#15 application on the card in SLOT.
*/
gpg_error_t
app_select_p15 (app_t app)
{
int slot = app->slot;
int rc;
unsigned short def_home_df = 0;
card_type_t card_type = CARD_TYPE_UNKNOWN;
int direct = 0;
int is_belpic = 0;
rc = iso7816_select_application (slot, pkcs15_aid, sizeof pkcs15_aid, 0);
if (rc)
{ /* Not found: Try to locate it from 2F00. We use direct path
selection here because it seems that the Belgian eID card
does only allow for that. Many other cards supports this
selection method too. Note, that we don't use
select_application above for the Belgian card - the call
works but it seems that it does not switch to the correct DF.
Using the 2f02 just works. */
unsigned short path[1] = { 0x2f00 };
rc = iso7816_select_path (slot, path, 1, 0);
if (!rc)
{
direct = 1;
def_home_df = read_home_df (slot, &is_belpic);
if (def_home_df)
{
path[0] = def_home_df;
rc = iso7816_select_path (slot, path, 1, 0);
}
}
}
if (rc)
{ /* Still not found: Try the default DF. */
def_home_df = 0x5015;
rc = iso7816_select_file (slot, def_home_df, 1);
}
if (!rc)
{
/* Determine the type of the card. The general case is to look
it up from the ATR table. For the Belgian eID card we know
it instantly from the AID. */
if (is_belpic)
{
card_type = CARD_TYPE_BELPIC;
}
else
{
unsigned char *atr;
size_t atrlen;
int i;
atr = apdu_get_atr (app->slot, &atrlen);
if (!atr)
rc = gpg_error (GPG_ERR_INV_CARD);
else
{
for (i=0; card_atr_list[i].atrlen; i++)
if (card_atr_list[i].atrlen == atrlen
&& !memcmp (card_atr_list[i].atr, atr, atrlen))
{
card_type = card_atr_list[i].type;
break;
}
xfree (atr);
}
}
}
if (!rc)
{
app->apptype = APPTYPE_P15;
app->app_local = xtrycalloc (1, sizeof *app->app_local);
if (!app->app_local)
{
rc = gpg_error_from_syserror ();
goto leave;
}
/* Set the home DF. Note that we currently can't do that if the
selection via application ID worked. This will store 0 there
instead. FIXME: We either need to figure the home_df via the
DIR file or using the return values from the select file
APDU. */
app->app_local->home_df = def_home_df;
/* Store the card type. FIXME: We might want to put this into
the common APP structure. */
app->app_local->card_type = card_type;
app->app_local->card_product = CARD_PRODUCT_UNKNOWN;
/* Store whether we may and should use direct path selection. */
app->app_local->direct_path_selection = direct;
/* Read basic information and thus check whether this is a real
card. */
rc = read_p15_info (app);
if (rc)
goto leave;
/* Special serial number munging. We need to check for a German
prototype card right here because we need to access to
EF(TokenInfo). We mark such a serial number by the using a
prefix of FF0100. */
if (app->serialnolen == 12
&& !memcmp (app->serialno, "\xD2\x76\0\0\0\0\0\0\0\0\0\0", 12))
{
/* This is a German card with a silly serial number. Try to get
the serial number from the EF(TokenInfo). . */
unsigned char *p;
/* FIXME: actually get it from EF(TokenInfo). */
p = xtrymalloc (3 + app->serialnolen);
if (!p)
rc = gpg_error (gpg_err_code_from_errno (errno));
else
{
memcpy (p, "\xff\x01", 3);
memcpy (p+3, app->serialno, app->serialnolen);
app->serialnolen += 3;
xfree (app->serialno);
app->serialno = p;
}
}
app->fnc.deinit = do_deinit;
app->fnc.learn_status = do_learn_status;
app->fnc.readcert = do_readcert;
app->fnc.getattr = do_getattr;
app->fnc.setattr = NULL;
app->fnc.genkey = NULL;
app->fnc.sign = do_sign;
app->fnc.auth = do_auth;
app->fnc.decipher = do_decipher;
app->fnc.change_pin = NULL;
app->fnc.check_pin = NULL;
leave:
if (rc)
do_deinit (app);
}
return rc;
}
diff --git a/scd/app-sc-hsm.c b/scd/app-sc-hsm.c
index cc5771e2c..1425b435b 100644
--- a/scd/app-sc-hsm.c
+++ b/scd/app-sc-hsm.c
@@ -1,2087 +1,2087 @@
/* app-sc-hsm.c - The SmartCard-HSM card application (www.smartcard-hsm.com).
* Copyright (C) 2005 Free Software Foundation, Inc.
* Copyright (C) 2014 Andreas Schwier
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see .
*/
/*
Code in this driver is based on app-p15.c with modifications.
*/
#include
#include
#include
#include
#include
#include
#include
#include "scdaemon.h"
#include "iso7816.h"
#include "../common/tlv.h"
#include "apdu.h"
/* The AID of the SmartCard-HSM applet. */
static char const sc_hsm_aid[] = { 0xE8, 0x2B, 0x06, 0x01, 0x04, 0x01, 0x81,
0xC3, 0x1F, 0x02, 0x01 };
/* Special file identifier for SmartCard-HSM */
typedef enum
{
SC_HSM_PRKD_PREFIX = 0xC4,
SC_HSM_CD_PREFIX = 0xC8,
SC_HSM_DCOD_PREFIX = 0xC9,
SC_HSM_CA_PREFIX = 0xCA,
SC_HSM_KEY_PREFIX = 0xCC,
SC_HSM_EE_PREFIX = 0xCE
} fid_prefix_type_t;
/* The key types supported by the SmartCard-HSM */
typedef enum
{
KEY_TYPE_RSA,
KEY_TYPE_ECC
} key_type_t;
/* A bit array with for the key usage flags from the
commonKeyAttributes. */
struct keyusage_flags_s
{
unsigned int encrypt: 1;
unsigned int decrypt: 1;
unsigned int sign: 1;
unsigned int sign_recover: 1;
unsigned int wrap: 1;
unsigned int unwrap: 1;
unsigned int verify: 1;
unsigned int verify_recover: 1;
unsigned int derive: 1;
unsigned int non_repudiation: 1;
};
typedef struct keyusage_flags_s keyusage_flags_t;
/* This is an object to store information about a Certificate
Directory File (CDF) in a format suitable for further processing by
us. To keep memory management, simple we use a linked list of
items; i.e. one such object represents one certificate and the list
the entire CDF. */
struct cdf_object_s
{
/* Link to next item when used in a linked list. */
struct cdf_object_s *next;
/* Length and allocated buffer with the Id of this object. */
size_t objidlen;
unsigned char *objid;
/* To avoid reading a certificate more than once, we cache it in an
allocated memory IMAGE of IMAGELEN. */
size_t imagelen;
unsigned char *image;
/* EF containing certificate */
unsigned short fid;
};
typedef struct cdf_object_s *cdf_object_t;
/* This is an object to store information about a Private Key
Directory File (PrKDF) in a format suitable for further processing
by us. To keep memory management, simple we use a linked list of
items; i.e. one such object represents one certificate and the list
the entire PrKDF. */
struct prkdf_object_s
{
/* Link to next item when used in a linked list. */
struct prkdf_object_s *next;
/* Key type */
key_type_t keytype;
/* Key size in bits or 0 if unknown */
size_t keysize;
/* Length and allocated buffer with the Id of this object. */
size_t objidlen;
unsigned char *objid;
/* The key's usage flags. */
keyusage_flags_t usageflags;
/* The keyReference */
unsigned char key_reference;
};
typedef struct prkdf_object_s *prkdf_object_t;
/* Context local to this application. */
struct app_local_s
{
/* Information on all certificates. */
cdf_object_t certificate_info;
/* Information on all trusted certificates. */
cdf_object_t trusted_certificate_info;
/* Information on all private keys. */
prkdf_object_t private_key_info;
};
/*** Local prototypes. ***/
static gpg_error_t readcert_by_cdf (app_t app, cdf_object_t cdf,
unsigned char **r_cert, size_t *r_certlen);
/* Release the CDF object A */
static void
release_cdflist (cdf_object_t a)
{
while (a)
{
cdf_object_t tmp = a->next;
xfree (a->image);
xfree (a->objid);
xfree (a);
a = tmp;
}
}
/* Release the PrKDF object A. */
static void
release_prkdflist (prkdf_object_t a)
{
while (a)
{
prkdf_object_t tmp = a->next;
xfree (a->objid);
xfree (a);
a = tmp;
}
}
/* Release all local resources. */
static void
do_deinit (app_t app)
{
if (app && app->app_local)
{
release_cdflist (app->app_local->certificate_info);
release_cdflist (app->app_local->trusted_certificate_info);
release_prkdflist (app->app_local->private_key_info);
xfree (app->app_local);
app->app_local = NULL;
}
}
/* Get the list of EFs from the SmartCard-HSM.
* On success a dynamically buffer containing the EF list is returned.
* The caller is responsible for freeing the buffer.
*/
static gpg_error_t
list_ef (int slot, unsigned char **result, size_t *resultlen)
{
int sw;
if (!result || !resultlen)
return gpg_error (GPG_ERR_INV_VALUE);
*result = NULL;
*resultlen = 0;
sw = apdu_send_le (slot, 1, 0x80, 0x58, 0x00, 0x00, -1, NULL, 65536,
result, resultlen);
if (sw != SW_SUCCESS)
{
/* Make sure that pending buffers are released. */
xfree (*result);
*result = NULL;
*resultlen = 0;
}
return iso7816_map_sw (sw);
}
/* Do a select and a read for the file with EFID. EFID_DESC is a
description of the EF to be used with error messages. On success
BUFFER and BUFLEN contain the entire content of the EF. The caller
must free BUFFER only on success. */
static gpg_error_t
select_and_read_binary (int slot, unsigned short efid, const char *efid_desc,
unsigned char **buffer, size_t *buflen, int maxread)
{
gpg_error_t err;
unsigned char cdata[4];
int sw;
cdata[0] = 0x54; /* Create ISO 7861-4 odd ins READ BINARY */
cdata[1] = 0x02;
cdata[2] = 0x00;
cdata[3] = 0x00;
sw = apdu_send_le(slot, 1, 0x00, 0xB1, efid >> 8, efid & 0xFF,
4, cdata, maxread, buffer, buflen);
if (sw == SW_EOF_REACHED)
sw = SW_SUCCESS;
err = iso7816_map_sw (sw);
if (err)
{
log_error ("error reading %s (0x%04X): %s\n",
efid_desc, efid, gpg_strerror (err));
return err;
}
return 0;
}
/* Parse a cert Id string (or a key Id string) and return the binary
object Id string in a newly allocated buffer stored at R_OBJID and
R_OBJIDLEN. On Error NULL will be stored there and an error code
returned. On success caller needs to free the buffer at R_OBJID. */
static gpg_error_t
parse_certid (const char *certid, unsigned char **r_objid, size_t *r_objidlen)
{
const char *s;
size_t objidlen;
unsigned char *objid;
int i;
*r_objid = NULL;
*r_objidlen = 0;
if (strncmp (certid, "HSM.", 4))
return gpg_error (GPG_ERR_INV_ID);
certid += 4;
for (s=certid, objidlen=0; hexdigitp (s); s++, objidlen++)
;
if (*s || !objidlen || (objidlen%2))
return gpg_error (GPG_ERR_INV_ID);
objidlen /= 2;
objid = xtrymalloc (objidlen);
if (!objid)
return gpg_error_from_syserror ();
for (s=certid, i=0; i < objidlen; i++, s+=2)
objid[i] = xtoi_2 (s);
*r_objid = objid;
*r_objidlen = objidlen;
return 0;
}
/* Find a certificate object by the certificate ID CERTID and store a
pointer to it at R_CDF. */
static gpg_error_t
cdf_object_from_certid (app_t app, const char *certid, cdf_object_t *r_cdf)
{
gpg_error_t err;
size_t objidlen;
unsigned char *objid;
cdf_object_t cdf;
err = parse_certid (certid, &objid, &objidlen);
if (err)
return err;
for (cdf = app->app_local->certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == objidlen && !memcmp (cdf->objid, objid, objidlen))
break;
if (!cdf)
for (cdf = app->app_local->trusted_certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == objidlen && !memcmp (cdf->objid, objid, objidlen))
break;
xfree (objid);
if (!cdf)
return gpg_error (GPG_ERR_NOT_FOUND);
*r_cdf = cdf;
return 0;
}
/* Find a private key object by the key Id string KEYIDSTR and store a
pointer to it at R_PRKDF. */
static gpg_error_t
prkdf_object_from_keyidstr (app_t app, const char *keyidstr,
prkdf_object_t *r_prkdf)
{
gpg_error_t err;
size_t objidlen;
unsigned char *objid;
prkdf_object_t prkdf;
err = parse_certid (keyidstr, &objid, &objidlen);
if (err)
return err;
for (prkdf = app->app_local->private_key_info; prkdf; prkdf = prkdf->next)
if (prkdf->objidlen == objidlen && !memcmp (prkdf->objid, objid, objidlen))
break;
xfree (objid);
if (!prkdf)
return gpg_error (GPG_ERR_NOT_FOUND);
*r_prkdf = prkdf;
return 0;
}
/* Parse the BIT STRING with the keyUsageFlags from the
CommonKeyAttributes. */
static gpg_error_t
parse_keyusage_flags (const unsigned char *der, size_t derlen,
keyusage_flags_t *usageflags)
{
unsigned int bits, mask;
int i, unused, full;
memset (usageflags, 0, sizeof *usageflags);
if (!derlen)
return gpg_error (GPG_ERR_INV_OBJ);
unused = *der++; derlen--;
if ((!derlen && unused) || unused/8 > derlen)
return gpg_error (GPG_ERR_ENCODING_PROBLEM);
full = derlen - (unused+7)/8;
unused %= 8;
mask = 0;
for (i=1; unused; i <<= 1, unused--)
mask |= i;
/* First octet */
if (derlen)
{
bits = *der++; derlen--;
if (full)
full--;
else
{
bits &= ~mask;
mask = 0;
}
}
else
bits = 0;
if ((bits & 0x80)) usageflags->encrypt = 1;
if ((bits & 0x40)) usageflags->decrypt = 1;
if ((bits & 0x20)) usageflags->sign = 1;
if ((bits & 0x10)) usageflags->sign_recover = 1;
if ((bits & 0x08)) usageflags->wrap = 1;
if ((bits & 0x04)) usageflags->unwrap = 1;
if ((bits & 0x02)) usageflags->verify = 1;
if ((bits & 0x01)) usageflags->verify_recover = 1;
/* Second octet. */
if (derlen)
{
bits = *der++; derlen--;
if (full)
full--;
else
{
bits &= ~mask;
}
}
else
bits = 0;
if ((bits & 0x80)) usageflags->derive = 1;
if ((bits & 0x40)) usageflags->non_repudiation = 1;
return 0;
}
/* Read and parse a Private Key Directory File containing a single key
description in PKCS#15 format. For each private key a matching
certificate description is created, if the certificate EF exists
and contains a X.509 certificate.
Example data:
0000 30 2A 30 13 0C 11 4A 6F 65 20 44 6F 65 20 28 52 0*0...Joe Doe (R
0010 53 41 32 30 34 38 29 30 07 04 01 01 03 02 02 74 SA2048)0.......t
0020 A1 0A 30 08 30 02 04 00 02 02 08 00 ..0.0.......
Decoded example:
SEQUENCE SIZE( 42 )
SEQUENCE SIZE( 19 )
UTF8-STRING SIZE( 17 ) -- label
0000 4A 6F 65 20 44 6F 65 20 28 52 53 41 32 30 34 38 Joe Doe (RSA2048
0010 29 )
SEQUENCE SIZE( 7 )
OCTET-STRING SIZE( 1 ) -- id
0000 01
BIT-STRING SIZE( 2 ) -- key usage
0000 02 74
A1 [ CONTEXT 1 ] IMPLICIT SEQUENCE SIZE( 10 )
SEQUENCE SIZE( 8 )
SEQUENCE SIZE( 2 )
OCTET-STRING SIZE( 0 ) -- empty path, req object in PKCS#15
INTEGER SIZE( 2 ) -- modulus size in bits
0000 08 00
*/
static gpg_error_t
read_ef_prkd (app_t app, unsigned short fid, prkdf_object_t *prkdresult,
cdf_object_t *cdresult)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
int i;
const unsigned char *pp;
size_t nn;
int where;
const char *errstr = NULL;
prkdf_object_t prkdf = NULL;
cdf_object_t cdf = NULL;
unsigned long ul;
const unsigned char *objid;
size_t objidlen;
keyusage_flags_t usageflags;
const char *s;
key_type_t keytype;
size_t keysize;
if (!fid)
return gpg_error (GPG_ERR_NO_DATA); /* No private keys. */
err = select_and_read_binary (app->slot, fid, "PrKDF", &buffer, &buflen, 255);
if (err)
return err;
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || (tag != TAG_SEQUENCE && tag != 0x00)))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("error parsing PrKDF record: %s\n", gpg_strerror (err));
goto leave;
}
keytype = tag == 0x00 ? KEY_TYPE_ECC : KEY_TYPE_RSA;
pp = p;
nn = objlen;
p += objlen;
n -= objlen;
/* Parse the commonObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Search the optional AuthId. We need to skip the optional Label
(UTF8STRING) and the optional CommonObjectFlags (BITSTRING). */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
if (tag == TAG_UTF8_STRING)
{
ppp += objlen; /* Skip the Label. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_BIT_STRING)
{
ppp += objlen; /* Skip the CommonObjectFlags. */
nnn -= objlen;
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn || class != CLASS_UNIVERSAL))
err = gpg_error (GPG_ERR_INV_OBJ);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto no_authid;
if (err)
goto parse_error;
}
if (tag == TAG_OCTET_STRING && objlen)
{
/* AuthId ignored */
}
no_authid:
;
}
/* Parse the commonKeyAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Get the Id. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
objid = ppp;
objidlen = objlen;
ppp += objlen;
nnn -= objlen;
/* Get the KeyUsageFlags. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_BIT_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
err = parse_keyusage_flags (ppp, objlen, &usageflags);
if (err)
goto parse_error;
ppp += objlen;
nnn -= objlen;
/* Find the keyReference */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_UNIVERSAL && tag == TAG_BOOLEAN)
{
/* Skip the native element. */
ppp += objlen;
nnn -= objlen;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
if (class == CLASS_UNIVERSAL && tag == TAG_BIT_STRING)
{
/* Skip the accessFlags. */
ppp += objlen;
nnn -= objlen;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (gpg_err_code (err) == GPG_ERR_EOF)
goto leave_cki;
if (!err && objlen > nnn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
}
if (class == CLASS_UNIVERSAL && tag == TAG_INTEGER)
{
/* Yep, this is the keyReference.
Note: UL is currently not used. */
for (ul=0; objlen; objlen--)
{
ul <<= 8;
ul |= (*ppp++) & 0xff;
nnn--;
}
}
leave_cki:
;
}
/* Skip subClassAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class == CLASS_CONTEXT && tag == 0)
{
pp += objlen;
nn -= objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
}
/* Parse the keyAttributes. */
if (!err && (objlen > nn || class != CLASS_CONTEXT || tag != 1))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
/* Check that the reference is a Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE)
{
errstr = "unsupported reference type";
goto parse_error;
}
pp += objlen;
nn -= objlen;
/* Parse the key size object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
keysize = 0;
if (class == CLASS_UNIVERSAL && tag == TAG_INTEGER && objlen == 2)
{
keysize = *pp++ << 8;
keysize += *pp++;
}
/* Create a new PrKDF list item. */
prkdf = xtrycalloc (1, sizeof *prkdf);
if (!prkdf)
{
err = gpg_error_from_syserror ();
goto leave;
}
prkdf->keytype = keytype;
prkdf->keysize = keysize;
prkdf->objidlen = objidlen;
prkdf->objid = xtrymalloc (objidlen);
if (!prkdf->objid)
{
err = gpg_error_from_syserror ();
xfree (prkdf);
prkdf = NULL;
goto leave;
}
memcpy (prkdf->objid, objid, objidlen);
prkdf->usageflags = usageflags;
prkdf->key_reference = fid & 0xFF;
log_debug ("PrKDF %04hX: id=", fid);
for (i=0; i < prkdf->objidlen; i++)
log_printf ("%02X", prkdf->objid[i]);
log_printf (" keyref=0x%02X", prkdf->key_reference);
log_printf (" keysize=%zu", prkdf->keysize);
log_printf (" usage=");
s = "";
if (prkdf->usageflags.encrypt)
{
log_printf ("%sencrypt", s);
s = ",";
}
if (prkdf->usageflags.decrypt)
{
log_printf ("%sdecrypt", s);
s = ",";
}
if (prkdf->usageflags.sign)
{
log_printf ("%ssign", s);
s = ",";
}
if (prkdf->usageflags.sign_recover)
{
log_printf ("%ssign_recover", s);
s = ",";
}
if (prkdf->usageflags.wrap )
{
log_printf ("%swrap", s);
s = ",";
}
if (prkdf->usageflags.unwrap )
{
log_printf ("%sunwrap", s);
s = ",";
}
if (prkdf->usageflags.verify )
{
log_printf ("%sverify", s);
s = ",";
}
if (prkdf->usageflags.verify_recover)
{
log_printf ("%sverify_recover", s);
s = ",";
}
if (prkdf->usageflags.derive )
{
log_printf ("%sderive", s);
s = ",";
}
if (prkdf->usageflags.non_repudiation)
{
log_printf ("%snon_repudiation", s);
}
log_printf ("\n");
xfree (buffer);
buffer = NULL;
buflen = 0;
err = select_and_read_binary (app->slot,
((SC_HSM_EE_PREFIX << 8) | (fid & 0xFF)),
"CertEF", &buffer, &buflen, 1);
if (!err && buffer[0] == 0x30)
{
/* Create a matching CDF list item. */
cdf = xtrycalloc (1, sizeof *cdf);
if (!cdf)
{
err = gpg_error_from_syserror ();
goto leave;
}
cdf->objidlen = prkdf->objidlen;
cdf->objid = xtrymalloc (cdf->objidlen);
if (!cdf->objid)
{
err = gpg_error_from_syserror ();
xfree (cdf);
cdf = NULL;
goto leave;
}
memcpy (cdf->objid, prkdf->objid, objidlen);
cdf->fid = (SC_HSM_EE_PREFIX << 8) | (fid & 0xFF);
log_debug ("CDF %04hX: id=", fid);
for (i=0; i < cdf->objidlen; i++)
log_printf ("%02X", cdf->objid[i]);
log_printf (" fid=%04X\n", cdf->fid);
}
goto leave; /* Ready. */
parse_error:
log_error ("error parsing PrKDF record (%d): %s - skipped\n",
where, errstr? errstr : gpg_strerror (err));
err = 0;
leave:
xfree (buffer);
if (err)
{
if (prkdf)
{
if (prkdf->objid)
xfree (prkdf->objid);
xfree (prkdf);
}
if (cdf)
{
if (cdf->objid)
xfree (cdf->objid);
xfree (cdf);
}
}
else
{
if (prkdf)
prkdf->next = *prkdresult;
*prkdresult = prkdf;
if (cdf)
{
cdf->next = *cdresult;
*cdresult = cdf;
}
}
return err;
}
/* Read and parse the Certificate Description File identified by FID.
On success a the CDF list gets stored at RESULT and the caller is
then responsible of releasing the object.
Example data:
0000 30 35 30 11 0C 0B 43 65 72 74 69 66 69 63 61 74 050...Certificat
0010 65 03 02 06 40 30 16 04 14 C2 01 7C 2F BA A4 4A e...@0.....|/..J
0020 4A BB B8 49 11 DB 4A CA AA 7E 6A 2D 1B A1 08 30 J..I..J..~j-...0
0030 06 30 04 04 02 CA 00 .0.....
Decoded example:
SEQUENCE SIZE( 53 )
SEQUENCE SIZE( 17 )
UTF8-STRING SIZE( 11 ) -- label
0000 43 65 72 74 69 66 69 63 61 74 65 Certificate
BIT-STRING SIZE( 2 ) -- common object attributes
0000 06 40
SEQUENCE SIZE( 22 )
OCTET-STRING SIZE( 20 ) -- id
0000 C2 01 7C 2F BA A4 4A 4A BB B8 49 11 DB 4A CA AA
0010 7E 6A 2D 1B
A1 [ CONTEXT 1 ] IMPLICIT SEQUENCE SIZE( 8 )
SEQUENCE SIZE( 6 )
SEQUENCE SIZE( 4 )
OCTET-STRING SIZE( 2 ) -- path
0000 CA 00 ..
*/
static gpg_error_t
read_ef_cd (app_t app, unsigned short fid, cdf_object_t *result)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p;
size_t n, objlen, hdrlen;
int class, tag, constructed, ndef;
int i;
const unsigned char *pp;
size_t nn;
int where;
const char *errstr = NULL;
cdf_object_t cdf = NULL;
const unsigned char *objid;
size_t objidlen;
if (!fid)
return gpg_error (GPG_ERR_NO_DATA); /* No certificates. */
err = select_and_read_binary (app->slot, fid, "CDF", &buffer, &buflen, 255);
if (err)
return err;
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("error parsing CDF record: %s\n", gpg_strerror (err));
goto leave;
}
pp = p;
nn = objlen;
p += objlen;
n -= objlen;
/* Skip the commonObjectAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
pp += objlen;
nn -= objlen;
/* Parse the commonCertificateAttributes. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
{
const unsigned char *ppp = pp;
size_t nnn = objlen;
pp += objlen;
nn -= objlen;
/* Get the Id. */
where = __LINE__;
err = parse_ber_header (&ppp, &nnn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nnn
|| class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
objid = ppp;
objidlen = objlen;
}
/* Parse the certAttribute. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || class != CLASS_CONTEXT || tag != 1))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn
|| class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
nn = objlen;
/* Check that the reference is a Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
if (class != CLASS_UNIVERSAL || tag != TAG_SEQUENCE)
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto parse_error;
}
nn = objlen;
/* Parse the Path object. */
where = __LINE__;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && objlen > nn)
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
goto parse_error;
/* Make sure that the next element is a non zero path and of
even length (FID are two bytes each). */
if (class != CLASS_UNIVERSAL || tag != TAG_OCTET_STRING
|| (objlen & 1) )
{
errstr = "invalid path reference";
goto parse_error;
}
/* Create a new CDF list item. */
cdf = xtrycalloc (1, sizeof *cdf);
if (!cdf)
{
err = gpg_error_from_syserror ();
goto leave;
}
cdf->objidlen = objidlen;
cdf->objid = xtrymalloc (objidlen);
if (!cdf->objid)
{
err = gpg_error_from_syserror ();
xfree (cdf);
cdf = NULL;
goto leave;
}
memcpy (cdf->objid, objid, objidlen);
cdf->fid = (SC_HSM_CA_PREFIX << 8) | (fid & 0xFF);
log_debug ("CDF %04hX: id=", fid);
for (i=0; i < cdf->objidlen; i++)
log_printf ("%02X", cdf->objid[i]);
goto leave;
parse_error:
log_error ("error parsing CDF record (%d): %s - skipped\n",
where, errstr? errstr : gpg_strerror (err));
err = 0;
leave:
xfree (buffer);
if (err)
{
if (cdf)
{
if (cdf->objid)
xfree (cdf->objid);
xfree (cdf);
}
}
else
{
if (cdf)
cdf->next = *result;
*result = cdf;
}
return err;
}
/* Read the device certificate and extract the serial number.
EF.C_DevAut (2F02) contains two CVCs, the first is the device
certificate, the second is the issuer certificate.
Example data:
0000 7F 21 81 E2 7F 4E 81 9B 5F 29 01 00 42 0B 55 54 .!...N.._)..B.UT
0010 43 43 30 32 30 30 30 30 32 7F 49 4F 06 0A 04 00 CC0200002.IO....
0020 7F 00 07 02 02 02 02 03 86 41 04 6D FF D6 85 57 .........A.m...W
0030 40 FB 10 5D 94 71 8A 94 D2 5E 50 33 E7 1E C0 6C @..].q...^P3...l
0040 63 D5 C8 FC BA F3 02 1D 70 23 F6 47 E8 35 48 EF c.......p#.G.5H.
0050 B5 94 72 3C 6F BE C0 EB 9A C7 FB 06 59 26 CF 65 ..r...<.
0150 6B AC 06 EA 5F 20 0B 55 54 43 43 30 32 30 30 30 k..._ .UTCC02000
0160 30 32 7F 4C 10 06 0B 2B 06 01 04 01 81 C3 1F 03 02.L...+........
0170 01 01 53 01 80 5F 25 06 01 03 00 03 02 08 5F 24 ..S.._%......._$
0180 06 02 01 00 03 02 07 5F 37 40 93 C1 42 8B B3 8E ......._7@..B...
0190 42 61 6F 2C 19 E6 98 41 BD AA 60 BD E0 DD 4E F0 Bao,...A..`...N.
01A0 15 D5 4F 71 B7 BB C3 3A F2 AD 27 5E DD EE 6D 12 ..Oq...:..'^..m.
01B0 76 E6 2B A0 4C 01 CA C1 26 0C 45 6D C6 CB EC 92 v.+.L...&.Em....
01C0 BF 38 18 AD 8F B2 29 40 A9 51 .8....)@.Q
The certificate format is defined in BSI TR-03110:
7F21 [ APPLICATION 33 ] IMPLICIT SEQUENCE SIZE( 226 )
7F4E [ APPLICATION 78 ] IMPLICIT SEQUENCE SIZE( 155 )
5F29 [ APPLICATION 41 ] SIZE( 1 ) -- profile id
0000 00
42 [ APPLICATION 2 ] SIZE( 11 ) -- CAR
0000 55 54 43 43 30 32 30 30 30 30 32 UTCC0200002
7F49 [ APPLICATION 73 ] IMPLICIT SEQUENCE SIZE( 79 ) -- public key
OBJECT IDENTIFIER = { id-TA-ECDSA-SHA-256 }
86 [ CONTEXT 6 ] SIZE( 65 )
0000 04 6D FF D6 85 57 40 FB 10 5D 94 71 8A 94 D2 5E
0010 50 33 E7 1E C0 6C 63 D5 C8 FC BA F3 02 1D 70 23
0020 F6 47 E8 35 48 EF B5 94 72 3C 6F BE C0 EB 9A C7
0030 FB 06 59 26 CF 65 EF A1 72 E0 98 F3 F0 44 1B B7
0040 71
5F20 [ APPLICATION 32 ] SIZE( 16 ) -- CHR
0000 55 54 43 43 30 32 30 30 30 31 33 30 30 30 30 30 UTCC020001300000
7F4C [ APPLICATION 76 ] IMPLICIT SEQUENCE SIZE( 16 ) -- CHAT
OBJECT IDENTIFIER = { 1 3 6 1 4 1 24991 3 1 1 }
53 [ APPLICATION 19 ] SIZE( 1 )
0000 00
5F25 [ APPLICATION 37 ] SIZE( 6 ) -- Valid from
0000 01 04 00 07 01 01
5F24 [ APPLICATION 36 ] SIZE( 6 ) -- Valid to
0000 02 01 00 03 02 07
5F37 [ APPLICATION 55 ] SIZE( 64 ) -- Signature
0000 7F 73 04 3B 06 63 79 41 BE 1A 9F FC F6 77 67 2B
0010 8A 41 D1 11 F6 9B 54 44 AD 19 FB B8 0C C6 2F 34
0020 71 8E 4F F6 92 59 34 61 D9 4F 4A 86 36 A8 D8 9A
0030 C6 3C 17 7E 71 CE A8 26 D0 C5 25 61 78 9D 01 F8
The serial number is contained in tag 5F20, while the last 5 digits
are truncated.
*/
static gpg_error_t
read_serialno(app_t app)
{
gpg_error_t err;
unsigned char *buffer = NULL;
size_t buflen;
const unsigned char *p,*chr;
size_t n, objlen, hdrlen, chrlen;
int class, tag, constructed, ndef;
err = select_and_read_binary (app->slot, 0x2F02, "EF.C_DevAut",
&buffer, &buflen, 512);
if (err)
return err;
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != 0x21))
err = gpg_error (GPG_ERR_INV_OBJ);
if (err)
{
log_error ("error parsing C_DevAut: %s\n", gpg_strerror (err));
goto leave;
}
chr = find_tlv (p, objlen, 0x5F20, &chrlen);
if (!chr || chrlen <= 5)
{
err = gpg_error (GPG_ERR_INV_OBJ);
log_error ("CHR not found in CVC\n");
goto leave;
}
chrlen -= 5;
app->serialno = xtrymalloc (chrlen);
if (!app->serialno)
{
err = gpg_error_from_syserror ();
goto leave;
}
app->serialnolen = chrlen;
memcpy (app->serialno, chr, chrlen);
leave:
xfree (buffer);
return err;
}
/* Get all the basic information from the SmartCard-HSM, check the
structure and initialize our local context. This is used once at
application initialization. */
static gpg_error_t
read_meta (app_t app)
{
gpg_error_t err;
unsigned char *eflist = NULL;
size_t eflistlen = 0;
int i;
err = read_serialno(app);
if (err)
return err;
err = list_ef (app->slot, &eflist, &eflistlen);
if (err)
return err;
for (i = 0; i < eflistlen; i += 2)
{
switch(eflist[i])
{
case SC_HSM_KEY_PREFIX:
if (eflist[i + 1] == 0) /* No key with ID=0 */
break;
err = read_ef_prkd (app, ((SC_HSM_PRKD_PREFIX << 8) | eflist[i + 1]),
&app->app_local->private_key_info,
&app->app_local->certificate_info);
if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0;
if (err)
return err;
break;
case SC_HSM_CD_PREFIX:
err = read_ef_cd (app, ((eflist[i] << 8) | eflist[i + 1]),
&app->app_local->trusted_certificate_info);
if (gpg_err_code (err) == GPG_ERR_NO_DATA)
err = 0;
if (err)
return err;
break;
}
}
xfree (eflist);
return err;
}
/* Helper to do_learn_status: Send information about all certificates
listed in CERTINFO back. Use CERTTYPE as type of the
certificate. */
static gpg_error_t
send_certinfo (ctrl_t ctrl, const char *certtype, cdf_object_t certinfo)
{
for (; certinfo; certinfo = certinfo->next)
{
char *buf, *p;
buf = xtrymalloc (4 + certinfo->objidlen*2 + 1);
if (!buf)
return gpg_error_from_syserror ();
p = stpcpy (buf, "HSM.");
bin2hex (certinfo->objid, certinfo->objidlen, p);
send_status_info (ctrl, "CERTINFO",
certtype, strlen (certtype),
buf, strlen (buf),
NULL, (size_t)0);
xfree (buf);
}
return 0;
}
/* Get the keygrip of the private key object PRKDF. On success the
keygrip gets returned in the caller provided 41 byte buffer
R_GRIPSTR. */
static gpg_error_t
keygripstr_from_prkdf (app_t app, prkdf_object_t prkdf, char *r_gripstr)
{
gpg_error_t err;
cdf_object_t cdf;
unsigned char *der;
size_t derlen;
ksba_cert_t cert;
/* Look for a matching certificate. A certificate matches if the Id
matches the one of the private key info. */
for (cdf = app->app_local->certificate_info; cdf; cdf = cdf->next)
if (cdf->objidlen == prkdf->objidlen
&& !memcmp (cdf->objid, prkdf->objid, prkdf->objidlen))
break;
if (!cdf)
return gpg_error (GPG_ERR_NOT_FOUND);
err = readcert_by_cdf (app, cdf, &der, &derlen);
if (err)
return err;
err = ksba_cert_new (&cert);
if (!err)
err = ksba_cert_init_from_mem (cert, der, derlen);
xfree (der);
if (!err)
- err = app_help_get_keygrip_string (cert, r_gripstr, NULL);
+ err = app_help_get_keygrip_string (cert, r_gripstr, NULL, NULL);
ksba_cert_release (cert);
return err;
}
/* Helper to do_learn_status: Send information about all known
keypairs back. */
static gpg_error_t
send_keypairinfo (app_t app, ctrl_t ctrl, prkdf_object_t keyinfo)
{
gpg_error_t err;
for (; keyinfo; keyinfo = keyinfo->next)
{
char gripstr[40+1];
char *buf, *p;
buf = xtrymalloc (4 + keyinfo->objidlen*2 + 1);
if (!buf)
return gpg_error_from_syserror ();
p = stpcpy (buf, "HSM.");
bin2hex (keyinfo->objid, keyinfo->objidlen, p);
err = keygripstr_from_prkdf (app, keyinfo, gripstr);
if (err)
{
log_error ("can't get keygrip from %04X\n", keyinfo->key_reference);
}
else
{
assert (strlen (gripstr) == 40);
send_status_info (ctrl, "KEYPAIRINFO",
gripstr, 40,
buf, strlen (buf),
NULL, (size_t)0);
}
xfree (buf);
}
return 0;
}
/* This is the handler for the LEARN command. */
static gpg_error_t
do_learn_status (app_t app, ctrl_t ctrl, unsigned int flags)
{
gpg_error_t err;
if ((flags & 1))
err = 0;
else
{
err = send_certinfo (ctrl, "100", app->app_local->certificate_info);
if (!err)
err = send_certinfo (ctrl, "101",
app->app_local->trusted_certificate_info);
}
if (!err)
err = send_keypairinfo (app, ctrl, app->app_local->private_key_info);
return err;
}
/* Read a certificate using the information in CDF and return the
certificate in a newly allocated buffer R_CERT and its length
R_CERTLEN. */
static gpg_error_t
readcert_by_cdf (app_t app, cdf_object_t cdf,
unsigned char **r_cert, size_t *r_certlen)
{
gpg_error_t err;
unsigned char *buffer = NULL;
const unsigned char *p, *save_p;
size_t buflen, n;
int class, tag, constructed, ndef;
size_t totobjlen, objlen, hdrlen;
int rootca;
int i;
*r_cert = NULL;
*r_certlen = 0;
/* First check whether it has been cached. */
if (cdf->image)
{
*r_cert = xtrymalloc (cdf->imagelen);
if (!*r_cert)
return gpg_error_from_syserror ();
memcpy (*r_cert, cdf->image, cdf->imagelen);
*r_certlen = cdf->imagelen;
return 0;
}
err = select_and_read_binary (app->slot, cdf->fid, "CD",
&buffer, &buflen, 4096);
if (err)
{
log_error ("error reading certificate with Id ");
for (i=0; i < cdf->objidlen; i++)
log_printf ("%02X", cdf->objid[i]);
log_printf (": %s\n", gpg_strerror (err));
goto leave;
}
/* Check whether this is really a certificate. */
p = buffer;
n = buflen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if (class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed)
rootca = 0;
else if ( class == CLASS_UNIVERSAL && tag == TAG_SET && constructed )
rootca = 1;
else
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
totobjlen = objlen + hdrlen;
assert (totobjlen <= buflen);
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if (!rootca
&& class == CLASS_UNIVERSAL && tag == TAG_OBJECT_ID && !constructed)
{
/* The certificate seems to be contained in a userCertificate
container. Skip this and assume the following sequence is
the certificate. */
if (n < objlen)
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
p += objlen;
n -= objlen;
save_p = p;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (err)
goto leave;
if ( !(class == CLASS_UNIVERSAL && tag == TAG_SEQUENCE && constructed) )
{
err = gpg_error (GPG_ERR_INV_OBJ);
goto leave;
}
totobjlen = objlen + hdrlen;
assert (save_p + totobjlen <= buffer + buflen);
memmove (buffer, save_p, totobjlen);
}
*r_cert = buffer;
buffer = NULL;
*r_certlen = totobjlen;
/* Try to cache it. */
if (!cdf->image && (cdf->image = xtrymalloc (*r_certlen)))
{
memcpy (cdf->image, *r_cert, *r_certlen);
cdf->imagelen = *r_certlen;
}
leave:
xfree (buffer);
return err;
}
/* Handler for the READCERT command.
Read the certificate with id CERTID (as returned by learn_status in
the CERTINFO status lines) and return it in the freshly allocated
buffer to be stored at R_CERT and its length at R_CERTLEN. A error
code will be returned on failure and R_CERT and R_CERTLEN will be
set to (NULL,0). */
static gpg_error_t
do_readcert (app_t app, const char *certid,
unsigned char **r_cert, size_t *r_certlen)
{
gpg_error_t err;
cdf_object_t cdf;
*r_cert = NULL;
*r_certlen = 0;
err = cdf_object_from_certid (app, certid, &cdf);
if (!err)
err = readcert_by_cdf (app, cdf, r_cert, r_certlen);
return err;
}
/* Implement the GETATTR command. This is similar to the LEARN
command but returns just one value via the status interface. */
static gpg_error_t
do_getattr (app_t app, ctrl_t ctrl, const char *name)
{
if (!strcmp (name, "$AUTHKEYID"))
{
char *buf, *p;
prkdf_object_t prkdf;
/* We return the ID of the first private key capable of
signing. */
for (prkdf = app->app_local->private_key_info; prkdf;
prkdf = prkdf->next)
if (prkdf->usageflags.sign)
break;
if (prkdf)
{
buf = xtrymalloc (4 + prkdf->objidlen*2 + 1);
if (!buf)
return gpg_error_from_syserror ();
p = stpcpy (buf, "HSM.");
bin2hex (prkdf->objid, prkdf->objidlen, p);
send_status_info (ctrl, name, buf, strlen (buf), NULL, 0);
xfree (buf);
return 0;
}
}
else if (!strcmp (name, "$DISPSERIALNO"))
{
send_status_info (ctrl, name, app->serialno, app->serialnolen, NULL, 0);
return 0;
}
return gpg_error (GPG_ERR_INV_NAME);
}
/* Apply PKCS#1 V1.5 padding for signature operation. The function
* combines padding, digest info and the hash value. The buffer must
* be allocated by the caller matching the key size. */
static void
apply_PKCS_padding(const unsigned char *dig, int diglen,
const unsigned char *prefix, int prefixlen,
unsigned char *buff, int bufflen)
{
int i, n_ff;
/* Caller must ensure a sufficient buffer. */
if (diglen + prefixlen + 4 > bufflen)
return;
n_ff = bufflen - diglen - prefixlen - 3;
*buff++ = 0x00;
*buff++ = 0x01;
for (i=0; i < n_ff; i++)
*buff++ = 0xFF;
*buff++ = 0x00;
if (prefix)
memcpy (buff, prefix, prefixlen);
buff += prefixlen;
memcpy (buff, dig, diglen);
}
/* Decode a digest info structure (DI,DILEN) to extract the hash
* value. The buffer HASH to receive the digest must be provided by
* the caller with HASHLEN pointing to the inbound length. HASHLEN is
* updated to the outbound length. */
static int
hash_from_digestinfo (const unsigned char *di, size_t dilen,
unsigned char *hash, size_t *hashlen)
{
const unsigned char *p,*pp;
size_t n, nn, objlen, hdrlen;
int class, tag, constructed, ndef;
gpg_error_t err;
p = di;
n = dilen;
err = parse_ber_header (&p, &n, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > n || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if ( err )
return err;
pp = p;
nn = objlen;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_SEQUENCE))
err = gpg_error (GPG_ERR_INV_OBJ);
if ( err )
return err;
pp += objlen;
nn -= objlen;
err = parse_ber_header (&pp, &nn, &class, &tag, &constructed,
&ndef, &objlen, &hdrlen);
if (!err && (objlen > nn || tag != TAG_OCTET_STRING))
err = gpg_error (GPG_ERR_INV_OBJ);
if ( err )
return err;
if (*hashlen < objlen)
return gpg_error (GPG_ERR_TOO_SHORT);
memcpy (hash, pp, objlen);
*hashlen = objlen;
return 0;
}
/* Perform PIN verification
*/
static gpg_error_t
verify_pin (app_t app, gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg)
{
gpg_error_t err;
pininfo_t pininfo;
char *pinvalue;
char *prompt;
int sw;
sw = apdu_send_simple (app->slot, 0, 0x00, ISO7816_VERIFY, 0x00, 0x81,
-1, NULL);
if (sw == SW_SUCCESS)
return 0; /* PIN already verified */
if (sw == SW_REF_DATA_INV)
{
log_error ("SmartCard-HSM not initialized. Run sc-hsm-tool first\n");
return gpg_error (GPG_ERR_NO_PIN);
}
if (sw == SW_CHV_BLOCKED)
{
log_error ("PIN Blocked\n");
return gpg_error (GPG_ERR_PIN_BLOCKED);
}
memset (&pininfo, 0, sizeof pininfo);
pininfo.fixedlen = 0;
pininfo.minlen = 6;
pininfo.maxlen = 15;
prompt = "||Please enter the PIN";
if (!opt.disable_pinpad
&& !iso7816_check_pinpad (app->slot, ISO7816_VERIFY, &pininfo) )
{
err = pincb (pincb_arg, prompt, NULL);
if (err)
{
log_info ("PIN callback returned error: %s\n", gpg_strerror (err));
return err;
}
err = iso7816_verify_kp (app->slot, 0x81, &pininfo);
pincb (pincb_arg, NULL, NULL); /* Dismiss the prompt. */
}
else
{
err = pincb (pincb_arg, prompt, &pinvalue);
if (err)
{
log_info ("PIN callback returned error: %s\n", gpg_strerror (err));
return err;
}
err = iso7816_verify (app->slot, 0x81, pinvalue, strlen(pinvalue));
xfree (pinvalue);
}
if (err)
{
log_error ("PIN verification failed: %s\n", gpg_strerror (err));
return err;
}
log_debug ("PIN verification succeeded\n");
return err;
}
/* Handler for the PKSIGN command.
Create the signature and return the allocated result in OUTDATA.
If a PIN is required, the PINCB will be used to ask for the PIN;
that callback should return the PIN in an allocated buffer and
store that as the 3rd argument.
The API is somewhat inconsistent: The caller can either supply
a plain hash and the algorithm in hashalgo or a complete
DigestInfo structure. The former is detect by characteristic length
of the provided data (20,28,32,48 or 64 byte).
The function returns the RSA block in the size of the modulus or
the ECDSA signature in X9.62 format (SEQ/INT(r)/INT(s))
*/
static gpg_error_t
do_sign (app_t app, ctrl_t ctrl, const char *keyidstr, int hashalgo,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
static unsigned char rmd160_prefix[15] = /* Object ID is 1.3.36.3.2.1 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x24, 0x03,
0x02, 0x01, 0x05, 0x00, 0x04, 0x14 };
static unsigned char sha1_prefix[15] = /* (1.3.14.3.2.26) */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
static unsigned char sha224_prefix[19] = /* (2.16.840.1.101.3.4.2.4) */
{ 0x30, 0x2D, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48,
0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, 0x00, 0x04,
0x1C };
static unsigned char sha256_prefix[19] = /* (2.16.840.1.101.3.4.2.1) */
{ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05,
0x00, 0x04, 0x20 };
static unsigned char sha384_prefix[19] = /* (2.16.840.1.101.3.4.2.2) */
{ 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05,
0x00, 0x04, 0x30 };
static unsigned char sha512_prefix[19] = /* (2.16.840.1.101.3.4.2.3) */
{ 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05,
0x00, 0x04, 0x40 };
gpg_error_t err;
unsigned char cdsblk[256]; /* Raw PKCS#1 V1.5 block with padding
(RSA) or hash. */
prkdf_object_t prkdf; /* The private key object. */
size_t cdsblklen;
unsigned char algoid;
int sw;
(void)ctrl;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
if (indatalen > 124) /* Limit for 1024 bit key */
return gpg_error (GPG_ERR_INV_VALUE);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!(prkdf->usageflags.sign || prkdf->usageflags.sign_recover
||prkdf->usageflags.non_repudiation))
{
log_error ("key %s may not be used for signing\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
if (prkdf->keytype == KEY_TYPE_RSA)
{
algoid = 0x20;
cdsblklen = prkdf->keysize >> 3;
if (!cdsblklen)
cdsblklen = 256;
if (hashalgo == GCRY_MD_SHA1 && indatalen == 20)
apply_PKCS_padding (indata, indatalen,
sha1_prefix, sizeof(sha1_prefix),
cdsblk, cdsblklen);
else if (hashalgo == GCRY_MD_MD5 && indatalen == 20)
apply_PKCS_padding (indata, indatalen,
rmd160_prefix, sizeof(rmd160_prefix),
cdsblk, cdsblklen);
else if (hashalgo == GCRY_MD_SHA224 && indatalen == 28)
apply_PKCS_padding (indata, indatalen,
sha224_prefix, sizeof(sha224_prefix),
cdsblk, cdsblklen);
else if (hashalgo == GCRY_MD_SHA256 && indatalen == 32)
apply_PKCS_padding (indata, indatalen,
sha256_prefix, sizeof(sha256_prefix),
cdsblk, cdsblklen);
else if (hashalgo == GCRY_MD_SHA384 && indatalen == 48)
apply_PKCS_padding (indata, indatalen,
sha384_prefix, sizeof(sha384_prefix),
cdsblk, cdsblklen);
else if (hashalgo == GCRY_MD_SHA512 && indatalen == 64)
apply_PKCS_padding (indata, indatalen,
sha512_prefix, sizeof(sha512_prefix),
cdsblk, cdsblklen);
else /* Assume it's already a digest info or TLS_MD5SHA1 */
apply_PKCS_padding (indata, indatalen, NULL, 0, cdsblk, cdsblklen);
}
else
{
algoid = 0x70;
if (indatalen != 20 && indatalen != 28 && indatalen != 32
&& indatalen != 48 && indatalen != 64)
{
cdsblklen = sizeof(cdsblk);
err = hash_from_digestinfo (indata, indatalen, cdsblk, &cdsblklen);
if (err)
{
log_error ("DigestInfo invalid: %s\n", gpg_strerror (err));
return err;
}
}
else
{
memcpy (cdsblk, indata, indatalen);
cdsblklen = indatalen;
}
}
err = verify_pin (app, pincb, pincb_arg);
if (err)
return err;
sw = apdu_send_le (app->slot, 1, 0x80, 0x68, prkdf->key_reference, algoid,
cdsblklen, cdsblk, 0, outdata, outdatalen);
return iso7816_map_sw (sw);
}
/* Handler for the PKAUTH command.
This is basically the same as the PKSIGN command but we first check
that the requested key is suitable for authentication; that is, it
must match the criteria used for the attribute $AUTHKEYID. See
do_sign for calling conventions; there is no HASHALGO, though. */
static gpg_error_t
do_auth (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
gpg_error_t err;
prkdf_object_t prkdf;
int algo;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!prkdf->usageflags.sign)
{
log_error ("key %s may not be used for authentication\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
algo = indatalen == 36? MD_USER_TLS_MD5SHA1 : GCRY_MD_SHA1;
return do_sign (app, ctrl, keyidstr, algo, pincb, pincb_arg,
indata, indatalen, outdata, outdatalen);
}
/* Check PKCS#1 V1.5 padding and extract plain text. The function
* allocates a buffer for the plain text. The caller must release the
* buffer. */
static gpg_error_t
strip_PKCS15_padding(unsigned char *src, int srclen, unsigned char **dst,
size_t *dstlen)
{
unsigned char *p;
if (srclen < 2)
return gpg_error (GPG_ERR_DECRYPT_FAILED);
if (*src++ != 0x00)
return gpg_error (GPG_ERR_DECRYPT_FAILED);
if (*src++ != 0x02)
return gpg_error (GPG_ERR_DECRYPT_FAILED);
srclen -= 2;
while ((srclen > 0) && *src)
{
src++;
srclen--;
}
if (srclen < 2)
return gpg_error (GPG_ERR_DECRYPT_FAILED);
src++;
srclen--;
p = xtrymalloc (srclen);
if (!p)
return gpg_error_from_syserror ();
memcpy (p, src, srclen);
*dst = p;
*dstlen = srclen;
return 0;
}
/* Decrypt a PKCS#1 V1.5 formatted cryptogram using the referenced
key. */
static gpg_error_t
do_decipher (app_t app, ctrl_t ctrl, const char *keyidstr,
gpg_error_t (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen,
unsigned int *r_info)
{
gpg_error_t err;
unsigned char p1blk[256]; /* Enciphered P1 block */
prkdf_object_t prkdf; /* The private key object. */
unsigned char *rspdata;
size_t rspdatalen;
size_t p1blklen;
int sw;
(void)ctrl;
if (!keyidstr || !*keyidstr || !indatalen)
return gpg_error (GPG_ERR_INV_VALUE);
err = prkdf_object_from_keyidstr (app, keyidstr, &prkdf);
if (err)
return err;
if (!(prkdf->usageflags.decrypt || prkdf->usageflags.unwrap))
{
log_error ("key %s may not be used for deciphering\n", keyidstr);
return gpg_error (GPG_ERR_WRONG_KEY_USAGE);
}
if (prkdf->keytype != KEY_TYPE_RSA)
return gpg_error (GPG_ERR_NOT_SUPPORTED);
p1blklen = prkdf->keysize >> 3;
if (!p1blklen)
p1blklen = 256;
/* The input may be shorter (due to MPIs not storing leading zeroes)
or longer than the block size. We put INDATA right aligned into
the buffer. If INDATA is longer than the block size we truncate
it on the left. */
memset (p1blk, 0, sizeof(p1blk));
if (indatalen > p1blklen)
memcpy (p1blk, (unsigned char *)indata + (indatalen - p1blklen), p1blklen);
else
memcpy (p1blk + (p1blklen - indatalen), indata, indatalen);
err = verify_pin(app, pincb, pincb_arg);
if (err)
return err;
sw = apdu_send_le (app->slot, 1, 0x80, 0x62, prkdf->key_reference, 0x21,
p1blklen, p1blk, 0, &rspdata, &rspdatalen);
err = iso7816_map_sw (sw);
if (err)
{
log_error ("Decrypt failed: %s\n", gpg_strerror (err));
return err;
}
err = strip_PKCS15_padding (rspdata, rspdatalen, outdata, outdatalen);
xfree (rspdata);
if (!err)
*r_info |= APP_DECIPHER_INFO_NOPAD;
return err;
}
/*
* Select the SmartCard-HSM application on the card in SLOT.
*/
gpg_error_t
app_select_sc_hsm (app_t app)
{
int slot = app->slot;
int rc;
rc = iso7816_select_application (slot, sc_hsm_aid, sizeof sc_hsm_aid, 0);
if (!rc)
{
app->apptype = APPTYPE_SC_HSM;
app->app_local = xtrycalloc (1, sizeof *app->app_local);
if (!app->app_local)
{
rc = gpg_error_from_syserror ();
goto leave;
}
rc = read_meta (app);
if (rc)
goto leave;
app->fnc.deinit = do_deinit;
app->fnc.learn_status = do_learn_status;
app->fnc.readcert = do_readcert;
app->fnc.getattr = do_getattr;
app->fnc.setattr = NULL;
app->fnc.genkey = NULL;
app->fnc.sign = do_sign;
app->fnc.auth = do_auth;
app->fnc.decipher = do_decipher;
app->fnc.change_pin = NULL;
app->fnc.check_pin = NULL;
leave:
if (rc)
do_deinit (app);
}
return rc;
}