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agent: Allow decryption with card but no file.

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* agent/pkdecrypt.c (agent_pkdecrypt): Support decryption with card
but without a stub key.

--

GnuPG-bug-id: 5170
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2020-12-08 15:15:45 +09:00
parent 9beab36dfa
commit eda3c688fc
1 changed files with 5 additions and 2 deletions
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7
agent/pkdecrypt.c
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@ -41,6 +41,7 @@ agent_pkdecrypt (ctrl_t ctrl, const char *desc_text,
gcry_sexp_t s_skey = NULL, s_cipher = NULL, s_plain = NULL;
unsigned char *shadow_info = NULL;
gpg_error_t err = 0;
int no_shadow_info = 0;
char *buf = NULL;
size_t len;
@ -69,14 +70,16 @@ agent_pkdecrypt (ctrl_t ctrl, const char *desc_text,
err = agent_key_from_file (ctrl, NULL, desc_text,
ctrl->keygrip, &shadow_info,
CACHE_MODE_NORMAL, NULL, &s_skey, NULL);
if (err)
if (gpg_err_code (err) == GPG_ERR_NO_SECKEY)
no_shadow_info = 1;
else if (err)
{
if (gpg_err_code (err) != GPG_ERR_NO_SECKEY)
log_error ("failed to read the secret key\n");
goto leave;
}
if (shadow_info)
if (shadow_info || no_shadow_info)
{ /* divert operation to the smartcard */
if (!gcry_sexp_canon_len (ciphertext, ciphertextlen, NULL, NULL))