diff options
Diffstat (limited to 'g10/call-agent.c')
| -rw-r--r-- | g10/call-agent.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/g10/call-agent.c b/g10/call-agent.c index 17290ec1a..4ce6a06ab 100644 --- a/g10/call-agent.c +++ b/g10/call-agent.c @@ -1816,17 +1816,34 @@ inq_ciphertext_cb (void *opaque, const char *line) } +/* Check whether there is any padding info from the agent. */ +static gpg_error_t +padding_info_cb (void *opaque, const char *line) +{ + int *r_padding = opaque; + const char *s; + + if ((s=has_leading_keyword (line, "PADDING"))) + { + *r_padding = atoi (s); + } + + return 0; +} + + /* Call the agent to do a decrypt operation using the key identified by the hex string KEYGRIP and the input data S_CIPHERTEXT. On the success the decoded value is stored verbatim at R_BUF and its length at R_BUF; the callers needs to release it. KEYID, MAINKEYID and PUBKEY_ALGO are used to construct additional promots or status - messages. */ + messages. The padding information is stored at R_PADDING with -1 + for not known. */ gpg_error_t agent_pkdecrypt (ctrl_t ctrl, const char *keygrip, const char *desc, u32 *keyid, u32 *mainkeyid, int pubkey_algo, gcry_sexp_t s_ciphertext, - unsigned char **r_buf, size_t *r_buflen) + unsigned char **r_buf, size_t *r_buflen, int *r_padding) { gpg_error_t err; char line[ASSUAN_LINELENGTH]; @@ -1841,9 +1858,12 @@ agent_pkdecrypt (ctrl_t ctrl, const char *keygrip, const char *desc, dfltparm.keyinfo.mainkeyid = mainkeyid; dfltparm.keyinfo.pubkey_algo = pubkey_algo; - if (!keygrip || strlen(keygrip) != 40 || !s_ciphertext || !r_buf || !r_buflen) + if (!keygrip || strlen(keygrip) != 40 + || !s_ciphertext || !r_buf || !r_buflen || !r_padding) return gpg_error (GPG_ERR_INV_VALUE); + *r_buf = NULL; + *r_padding = -1; err = start_agent (ctrl, 0); if (err) @@ -1881,7 +1901,8 @@ agent_pkdecrypt (ctrl_t ctrl, const char *keygrip, const char *desc, return err; err = assuan_transact (agent_ctx, "PKDECRYPT", membuf_data_cb, &data, - inq_ciphertext_cb, &parm, NULL, NULL); + inq_ciphertext_cb, &parm, + padding_info_cb, r_padding); xfree (parm.ciphertext); } if (err) |