I'm not really sure which version it worked with earlier. This yubikey setup is quite old now, and I've not signed keys recently. I think the last I signed were at least 2 yrs back, hence the very vague allusion to the setup working previously. Apologies, no definite answer there.

1. >>gpg2 --version

gpg (GnuPG) 2.0.30 (Gpg4win 2.3.3)
libgcrypt 1.6.6

@amit: Do you say it used to work with GnuPG 2.2.27 or did it worked with an older version?

Which gpg version?
Which Python library? (gnupg is pretty generic)
How does the Python library call gpg?
Are you aware that gpg uses utf8 and not Windows Unicode?

When you sign data, then the signing subkey is used

ssb>  rsa4096/0xEB0B4DFC657EF670 2016-04-01 [S]

Just noting that the logs were captured by enabling debug logs for the agent:

eval $(gpg-agent --daemon --debug-all --log-file /var/tmp/gpgagent.log)

Thanks for clarification, indeed attempt to decrypt data returns an error afterwards.

Well, while importing you get the warning:

Yes, for migration from GnuPG 2.0 reasons, a batch import delays the key checking (i.e. converting from OpenPGP to GnuPG internal format) to the first use. Thus you don't see an error immediately. But if you encrypt something , you won't be able to decrypt it again:

Thanks, Werner.
During further work on this got another issue:

The actual patch is rGd4768bb982adb5c8410303334ee8d82ba0d71f3b (our parser in dev.gnupg.org missed to pick up the bug-id due to teh use of scissor lines in the commit message).

The changes do not seem to touch anything I've mentoned in (1)?

I see, I wasn't aware of this. Thanks for fixing!

Thanks for commenting. I close this bug then.

Your proposed fix (in your first comment) has actually already been applied (commit 1305baf0994059f458b1d5ca28a355c12932fab3 in master, backported to the -2.2 branch in 455ba49071dea7588c9de11785b3092e45e4560b). It is part of gnupg-2.2.31 released today. :)

The Qt upstream bug report has just been rejected. I hope something can be done here...

Some quick ideas: On Windows we have envvars (and APIs) to determine certain locations. There is also the registry. We use of all them. IT would be best to do this simalar on Unix. We also have a control file on Windows which switches to that portable mode; maybe it is best to do this also on Unix - A text file installed alongside gpg which gpg (common/homedir.c) uses to enable the use of certain envvars to locate the root etc..

One challenge of the AppImage is how to make gpg and its helpers use the helpers baked into the AppImage. Currently, everything is built with prefix /build/AppDir/usr. This causes

gpg: failed to start agent '/build/AppDir/usr/bin/gpg-agent': No such file or directory

unless gpg finds an already running agent.

Thanks. I meanwhile pushed a fix to 2.3 so that a warning is shown if the low bits are set.

Thanks for the replies, this makes things clear. We'll update RNP to correctly set/unset those bits while saving a generated secret key and a way to fix up previously generated keys.

Right, as long as there is only one format in widespread use (based on a long existing 4880bis draft) only this format should go over the wire.
Thus, it is a matter how the key is exported. In cryptography you should never have several options - one clearly defined format is what you want. We have had enough trouble with PGP5 peculiarities but in that case their implementation had more users and thus GnuPG had to work around it. Not good, but there was no standard at all at this time.

@onickolay No sorry needed. It was me, who cannot answer promptly.

@gniibe sorry for pinging, but this issue gets attention as TB users (with RNP OpenPGP backend) cannot import to GnuPG EdDSA secret key which was generated by RNP since it doesn't tweak bits when storing or exporting a secret key.
Should we update RNP to tweak those bits during storage to be more compatible (given that those bits doesn't make any difference)?

Yes, --no-keyring should enough for the subset of gpg commands which do not need keys.

In T1621#149541, @werner wrote:

GnuPG stable (i.e. 2.3.2) has full support for several readers and tokens. This won't be backported to the LTS versions (2.2), though. Better switch.

GnuPG stable (i.e. 2.3.2) has full support for several readers and tokens. This won't be backported to the LTS versions (2.2), though. Better switch.

I've recently acquired two Yubikeys: one Yubikey 5 NFC from my workplace, and shortly after, I bought a Yubikey 5C for my own personal keys… both security tokens have _different_ keys on them. (There are some questions being asked regarding the use of the same GnuPG key duplicated on separate smartcards; this is a different case).

I think the behavior makes perfect sense for Unix but the default delimiter for .txt in Windows is \r\n.

The OP wants to do symmetric encryption. This isn't about the passphrase that protects a key.

Yes, we read up to the first LF. This has been the traditional way of PGP2 and is still used by mail programs like Mutt.

I'm guessing gpg in Unix has stripped the \n if present? I don't have access to a real Unix system at the moment.

I see that problem but gpg has traditionally not interpreted the passphrase in any way. Right, for Windows we could strip the CR but I fear that this might break other users scripts/passphrases. However there should be a warning in the manual.

gpg verifies the content of the file and not its meta data (file name). Thus an empty file is identical to a non-existing file. The OpenPGP protocol does not allow to distinguish between a detached signature and an embedded signature if you sign an empty file.

Nah, I think I laid out all my arguments by now. I don't have more to add, so I'll just let it be.

Thanks for helping out @werner.

Not at all. But 2.1 was such a large change that users really should have read the announcement and think about their use case. We have exensivly communicated the changes and can expect that users test their new installation. IF you have further comments, please use the mailing list.

You can write your own pinentry script instead of the loopback thing. The use the envvar PINENTRY-USER_DATA to communicate with the pinentry.

I'm still sad that you don't acknowledge the problem I am describing. It seems that you are writing your software for the kind of user who reads all your documentation first. That kind of user does not exist.

The option has been removed form the repo more than 11 years ago and the gnupg with this changes (2.1.0) was released 7 years ago including an extensive writeup on all the major changes including notices that the secret keys will be converted and moved.

Okay, I close this as a keyserver infrastructure problem. Feel free tore-open if you get other infos.

Fixed in 2.3.2.

At first I've had simply tried to give multiple --symmetric options (which of course didn't work).

I have no clear idea on how to style the UI for this feature. Technically it is simple but we need top query several passphrases. loopback mode with a list of passphrases might be easiest way to do that.

Yeah, that sounds good to me.

In T5551#148510, @werner wrote:

I would prefer to see a fix/hack in pinentry-qt instead.

I see. Thanks!

To minimize the risk of regressions.

Not to be bothersome, but why? DISPLAY seems like the universal method of selecting a display to put things on, where a lot of applications don't support --display or equivalent, especially now there's no equivalent for wayland. It's especially confusing to me when the keep-display option will pass DISPLAY instead of --display. This would also prevent other such scenarios with 3rd party qt/gtk plugins or alternative pinentry implementations.

I would prefer to see a fix/hack in pinentry-qt instead.

Proposed patch:

--- gnupg-2.2.27.orig/agent/call-pinentry.c
+++ gnupg-2.2.27/agent/call-pinentry.c
@@ -202,13 +202,14 @@

I propose the following patch to inform the user about the obsolete --secret-keyring option. The same is done for many other obsolete options.

This is very saddening and alarming from a respected member of the community whose opinion matters.

You should have read the release notes of 2.1 (first point). We can't keep a bug open because you had a wrong understanding of GnuPG properties. Sorry.

Sorry, I don't understand what you are trying to say, so let me give you some more detail.

Everything in ~/.gnupg is and has always been private to gnupg unless explicitly stated otherwise.

For many years I was convinced that my secret keys are stored in an encrypted folder. The .keyring file was there, everything looked correct...

Forgot to mention one thing: after changing my user folder directory I lost all my Outlook contacts. I was able to recover them... make sure you have a backup before attempting this!

I just had the same issue as hurui200320. My user name contains a "ç" and Kleopatra did not start. The Windows event logger reported a crash in libstdc++-6.dll. This was with gpg4win-3.1.16. Installing gnupg 2.3.1 did not change anything.

In agent_write_private_key of agent/findkey.c, when file is available, it returns GPG_ERR_EEXIST error. Thus, private (stub) key will be kept.

Do I correctly understand that issue will be resolved on GnuPG side by tweaking key bits before private-key import/and/or/operations?

We should not support a different OID or representation of 22519 which will only lead to incompatibilities and trouble existing users. 25519 is in too widespread use than to allow for any changes.

Thanks werner. That helps us to know that such test failure is not a deep issue that would push us to not deliver this version of gnupg on AIX.

With the next release you will get only a warning:

gnupg-2.2/common/t-sexputil.c:467: test 0 failed: Unknown elliptic curve - ignored
This is likely due to a patched version of Libgcrypt with removed support for Brainpool curves

The sks pool is now officially gone.

Sorry for the expired certificate.

Fix: "I Know so few about gnupg, thus I'm not sure I COULD add test cases, probably not. "

Hi,
The site now shows: "NET::ERR_CERT_DATE_INVALID" and I have a limited access to the web page.
Thanks for you explanation. However, I now so few about gnupg, thus I'm not sure I cannot add test cases, probably not. I'll see later if we have to provide on AIX a behavior different than the one of RedHat. Meanwhile, about your last proposal, yes it would be very useful to detect the case, print a warning, and skip the test. That would be helpful. Moreover, if the test deals with smartcards, we do not have on AIX, thus this test is very probably not useful in our environment.

The thing is that I added a test for a new function which uses standard curves of Libgcrypt. But here we are again at the RedHat mess: They support the NIST curves but they removed support for Brainpool curves. Both are very similiar curves just different parameters. Brainpool is just in Europe out of fear that the NIST curves are rigged by the the NSA. Now, why RedHat removed Brainpool is probably just a legal dept thing who didn't have a clue. The tin foil hats probably see a different reason.

• a patch change within scd/apdu.c dealing with a call of: pcsc_connect() since code has changed between the 2 versions: may this be the cause of the failure? (Edited: hummm this patch seems no more required. And I have the same failure without it).

Hi Werner,

Supported curves should be listed by

gpg --list-config --with-colons curve

I am not sure about Fedora, but RedHat used to remove ECC support from Libgcrypt; GnuPG requires these curves. As long as you don't use ECC you things will work despite of this failed test. The test is new to check and does not anticipate a broken Libgcrypt.

Thank you.

Hi, I updated the whole file, PLZ review. https://dev.gnupg.org/D533

Thank you for your suggestion and making a patch.

Sorry, I think, it is more official to update from 把密钥导出到一个公钥服务器上 to 将密钥导出到一个公钥服务器上 in the Chinese doc scenario. 😄😄😄😄

Thank you Werner for fixing this! We just came across the group permission issue in a multi-user environment and all we had to do was to upgrade to gnupg >=2.2.24.