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gpgsm: Allow decryption with a card returning a PKCS#1 stripped key.

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* sm/decrypt.c (prepare_decryption): Handle a 16 byte session key.
--

GnuPG-bug-id: 2230
Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-11-29 19:19:45 +01:00
parent 81d6e98cdf
commit 8489b12211
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 5 additions and 3 deletions
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8
sm/decrypt.c
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@ -74,10 +74,12 @@ prepare_decryption (ctrl_t ctrl, const char *hexkeygrip, const char *desc,
log_printhex ("pkcs1 encoded session key:", seskey, seskeylen); log_printhex ("pkcs1 encoded session key:", seskey, seskeylen);
n=0; n=0;
if (seskeylen == 24) if (seskeylen == 24 || seskeylen == 16)
{ {
/* Smells like a 3-des key. This might happen because a SC has /* Smells like a 3-DES or AES-128 key. This might happen
already done the unpacking. */ * because a SC has already done the unpacking. A better
* solution would be to test for this only after we triggered
* the GPG_ERR_INV_SESSION_KEY. */
} }
else else
{ {