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Maniphest T7398

GnuPG 2.2.45 (and earlier) always print 0 instead of the actual AEAD algorithm as last part of DECRYPTION_INFO
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Description

In 2.2.45, decrypt-data.c, line 284, reads

write_status_printf (STATUS_DECRYPTION_INFO, "%d %d %d",
                       ed->mdc_method, dek->algo, 0);

As you can see the information about the actual AEAD algo used is missing and messages that are encrypted with a key created in a newer version of GnuPG which create an AEAD packet, will look like they have no MDC and no AEAD, unless I'm misunderstanding something here.

Is it correct that the line mentioned above should look like this:

write_status_printf (STATUS_DECRYPTION_INFO, "%d %d %d",
                       ed->mdc_method, dek->algo, ed->aead_algo);

as is the case in 2.4.6?

Details

Version
2.2.45

Revisions and Commits

rG GnuPG
rGc8c86f25fd73 gpg: Add the AEAD algo number to the DECRYPTION_INFO status line.

Event Timeline

lukele created this task.Nov 15 2024, 2:10 AM
• werner changed the task status from Open to Testing.Nov 21 2024, 9:52 AM
• werner added a project: gnupg22.
• werner added a subscriber: • werner.

You are right. Printing the algo was missing in gnupg22.

• werner moved this task from Backlog to QA on the gnupg22 board.Nov 21 2024, 9:55 AM
[GNUPG:] BEGIN_DECRYPTION
[GNUPG:] DECRYPTION_INFO 0 9 0
[GNUPG:] PLAINTEXT 62 1732178872 
[GNUPG:] PLAINTEXT_LENGTH 72
You will be advanced socially, without any special effort on your part.
[GNUPG:] DECRYPTION_OKAY

After the change

[GNUPG:] BEGIN_DECRYPTION
[GNUPG:] DECRYPTION_INFO 0 9 2
[GNUPG:] PLAINTEXT 62 1732178872 
[GNUPG:] PLAINTEXT_LENGTH 72
You will be advanced socially, without any special effort on your part.
[GNUPG:] DECRYPTION_OKAY
• werner triaged this task as Normal priority.Nov 21 2024, 9:55 AM
lukele added a comment.Nov 21 2024, 9:56 AM

Perfect, thank you!

• werner added a commit: rGc8c86f25fd73: gpg: Add the AEAD algo number to the DECRYPTION_INFO status line..Nov 21 2024, 10:00 AM
steve added a subscriber: steve.Fri, Nov 22, 2:28 PM