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sm: Support AES-256 key.

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* sm/decrypt.c (prepare_decryption): Handle a case for AES-256.

--

Cherry-pick master commit of:
	ef2424144a070c9199e40424ec8d9b5a9919aa72

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2019-08-05 10:09:41 +09:00
parent ccf5cc8b0b
commit a9816d5fb1
1 changed files with 3 additions and 3 deletions
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6
sm/decrypt.c
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@ -75,10 +75,10 @@ prepare_decryption (ctrl_t ctrl, const char *hexkeygrip, const char *desc,
log_printhex ("pkcs1 encoded session key:", seskey, seskeylen);
n=0;
if (seskeylen == 24 || seskeylen == 16)
if (seskeylen == 32 || seskeylen == 24 || seskeylen == 16)
{
/* Smells like a 3-DES or AES-128 key. This might happen
* because a SC has already done the unpacking. A better
/* Smells like an AES-128, 3-DES, or AES-256 key. This might
* happen 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. */
}