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gpg: Allow decryption using PIV cards.

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* g10/call-agent.c (struct getattr_one_parm_s): New.
(getattr_one_status_cb): New.
(agent_scd_getattr_one): New.
* g10/pubkey-enc.c (get_it): Allow the standard leading zero byte from
pkcs#1.
* g10/skclist.c (enum_secret_keys): Handle non-OpenPGP cards.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2019-04-03 15:30:10 +02:00
parent 2b1135cf92
commit ec6a677923
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
4 changed files with 146 additions and 8 deletions
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10
g10/pubkey-enc.c
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@ -319,6 +319,16 @@ get_it (ctrl_t ctrl,
err = gpg_error (GPG_ERR_WRONG_SECKEY);
goto leave;
}
/* FIXME: Actually the leading zero is required but due to
* the way we encode the output in libgcrypt as an MPI we
* are not able to encode that leading zero. However, when
* using a Smartcard we are doing it the right way and
* therefore we have to skip the zero. This should be fixed
* in gpg-agent of course. */
if (!frame[n])
n++;
if (frame[n] == 1 && frame[nframe - 1] == 2)
{
log_info (_("old encoding of the DEK is not supported\n"));