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Allow decryption with card keys > 3072 bits

Browse source 
* scd/command.c (MAXLEN_SETDATA): New.
(cmd_setdata): Add option --append.
* agent/call-scd.c (agent_card_pkdecrypt): Use new option for long
data.

* scd/app-openpgp.c (struct app_local_s): Add field manufacturer.
(app_select_openpgp): Store manufacturer.
(do_decipher): Print a note for broken cards.

--

Please note that I was not able to run a full test because I only have
broken cards (S/N < 346) available.
This commit is contained in:
Werner Koch 2012-11-06 12:02:25 +01:00
parent 8f8c29d24c
commit 905b6a36d3
3 changed files with 58 additions and 17 deletions
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25
agent/call-scd.c
View file

@ -926,17 +926,22 @@ agent_card_pkdecrypt (ctrl_t ctrl,
return rc;
/* FIXME: use secure memory where appropriate */
if (indatalen*2 + 50 > DIM(line))
return unlock_scd (ctrl, gpg_error (GPG_ERR_GENERAL));
sprintf (line, "SETDATA ");
p = line + strlen (line);
for (i=0; i < indatalen ; i++, p += 2 )
sprintf (p, "%02X", indata[i]);
rc = assuan_transact (ctrl->scd_local->ctx, line,
NULL, NULL, NULL, NULL, NULL, NULL);
if (rc)
return unlock_scd (ctrl, rc);
for (len = 0; len < indatalen;)
{
p = stpcpy (line, "SETDATA ");
if (len)
p = stpcpy (p, "--append ");
for (i=0; len < indatalen && (i*2 < DIM(line)-50); i++, len++)
{
sprintf (p, "%02X", indata[len]);
p += 2;
}
rc = assuan_transact (ctrl->scd_local->ctx, line,
NULL, NULL, NULL, NULL, NULL, NULL);
if (rc)
return unlock_scd (ctrl, rc);
}
init_membuf (&data, 1024);
inqparm.ctx = ctrl->scd_local->ctx;