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gpg: Print info about the used AEAD algorithm in the compliance msg.

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* g10/misc.c (openpgp_cipher_algo_mode_name): New.
* g10/decrypt-data.c (decrypt_data): Use function here.
--

Note that openpgp_cipher_algo_mode_name is different from the version
2.2 becuase we append ".CFB" here.

Without this change we would see

  gpg: cipher algorithm 'AES256' may not be used in
  --compliance=de-vs mode

This is confusing because AES256 is compliant.  Now we see

  gpg: cipher algorithm 'AES256.OCB' may not be used in
  --compliance=de-vs mode

which gives a hint on the problem.
This commit is contained in:
Werner Koch 2022-03-18 13:50:18 +01:00
parent 449d2fbcde
commit 06b70daa50
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GPG key ID: E3FDFF218E45B72B
3 changed files with 18 additions and 5 deletions
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2
g10/main.h
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@ -126,6 +126,8 @@ enum gcry_cipher_algos map_cipher_openpgp_to_gcry (cipher_algo_t algo);
int openpgp_cipher_blocklen (cipher_algo_t algo);
int openpgp_cipher_test_algo(cipher_algo_t algo);
const char *openpgp_cipher_algo_name (cipher_algo_t algo);
const char *openpgp_cipher_algo_mode_name (cipher_algo_t algo,
aead_algo_t aead);
gpg_error_t openpgp_aead_test_algo (aead_algo_t algo);
const char *openpgp_aead_algo_name (aead_algo_t algo);