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Differential D501 Diff 1439 cipher/cipher-internal.h

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cipher/cipher-internal.h

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#if defined(GCM_USE_TABLES) #if defined(GCM_USE_TABLES)
#if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) && \ #if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) && \
defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) && \ defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) && \
defined(HAVE_GCC_INLINE_ASM_NEON) defined(HAVE_GCC_INLINE_ASM_NEON)
# define GCM_USE_ARM_NEON 1 # define GCM_USE_ARM_NEON 1
#endif #endif
#endif /* GCM_USE_ARM_NEON */ #endif /* GCM_USE_ARM_NEON */
/* GCM_USE_PPC_VPMSUM indicates whether to compile GCM with PPC Power 8 polynomial multiplication instruction */
#undef GCM_USE_PPC_VPMSUM
#if defined(GCM_USE_TABLES)
#if defined(ENABLE_PPC_CRYPTO_SUPPORT) && defined(__powerpc64__) && defined(__LITTLE_ENDIAN__) && \
defined(HAVE_COMPATIBLE_CC_PPC_ALTIVEC) && \
defined(HAVE_GCC_INLINE_ASM_PPC_ALTIVEC) && \
__GNUC__ >= 4
# define GCM_USE_PPC_VPMSUM 1
# define NEED_16BYTE_ALIGNED_CONTEXT 1 /* this also aligns gcm_table */
#endif
#endif /* GCM_USE_PPC_VPMSUM */
typedef unsigned int (*ghash_fn_t) (gcry_cipher_hd_t c, byte *result, typedef unsigned int (*ghash_fn_t) (gcry_cipher_hd_t c, byte *result,
const byte *buf, size_t nblocks); const byte *buf, size_t nblocks);
/* A structure with function pointers for mode operations. */ /* A structure with function pointers for mode operations. */
typedef struct cipher_mode_ops typedef struct cipher_mode_ops
{ {
gcry_err_code_t (*encrypt)(gcry_cipher_hd_t c, unsigned char *outbuf, gcry_err_code_t (*encrypt)(gcry_cipher_hd_t c, unsigned char *outbuf,
▲ Show 20 Lines • Show All 200 Lines • ▼ Show 20 Lines struct {
/* --- Following members are not cleared in gcry_cipher_reset --- */ /* --- Following members are not cleared in gcry_cipher_reset --- */
/* GHASH multiplier from key. */ /* GHASH multiplier from key. */
union { union {
cipher_context_alignment_t iv_align; cipher_context_alignment_t iv_align;
unsigned char key[MAX_BLOCKSIZE]; unsigned char key[MAX_BLOCKSIZE];
} u_ghash_key; } u_ghash_key;
/* GHASH implementation in use. */
ghash_fn_t ghash_fn;
/* Pre-calculated table for GCM. */ /* Pre-calculated table for GCM. */
#ifdef GCM_USE_TABLES #ifdef GCM_USE_TABLES
#if (SIZEOF_UNSIGNED_LONG == 8 || defined(__x86_64__)) #if (SIZEOF_UNSIGNED_LONG == 8 || defined(__x86_64__))
#define GCM_TABLES_USE_U64 1 #define GCM_TABLES_USE_U64 1
u64 gcm_table[4 * 16]; u64 gcm_table[4 * 16];
#else #else
#undef GCM_TABLES_USE_U64 #undef GCM_TABLES_USE_U64
u32 gcm_table[8 * 16]; u32 gcm_table[8 * 16];
#endif #endif
#endif #endif
/* GHASH implementation in use. */
ghash_fn_t ghash_fn;
} gcm; } gcm;
/* Mode specific storage for OCB mode. */ /* Mode specific storage for OCB mode. */
struct { struct {
/* --- Following members are not cleared in gcry_cipher_reset --- */ /* --- Following members are not cleared in gcry_cipher_reset --- */
/* Helper variables and pre-computed table of L values. */ /* Helper variables and pre-computed table of L values. */
unsigned char L_star[OCB_BLOCK_LEN]; unsigned char L_star[OCB_BLOCK_LEN];
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