security-and-privacy/gnupg
security-and-privacy/gnupg
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Well and some stuff to access the SC will be helpful. Note, that the

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code requires the latest OpenSC CVS code.
This commit is contained in:
Werner Koch 2002-03-05 17:17:08 +00:00
parent d8538d80dd
commit 2b5dca457c
3 changed files with 116 additions and 16 deletions
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56
scd/command.c
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@ -29,6 +29,9 @@
#include "scdaemon.h"
#include "../assuan/assuan.h"
/* maximum length aloowed as a PIN; used for INQUIRE NEEDPIN */
#define MAXLEN_PIN 100
#define set_error(e,t) assuan_set_error (ctx, ASSUAN_ ## e, (t))
/* Data used to associate an Assuan context with local server data */
@ -329,6 +332,40 @@ cmd_setdata (ASSUAN_CONTEXT ctx, char *line)
static int
pin_cb (void *opaque, const char *info, char **retstr)
{
ASSUAN_CONTEXT ctx = opaque;
char *command;
int rc;
char *value;
size_t valuelen;
*retstr = NULL;
log_debug ("asking for PIN '%s'\n", info);
rc = asprintf (&command, "NEEDPIN %s", info);
if (rc < 0)
return GNUPG_Out_Of_Core;
/* FIXME: Write an inquire function which returns the result in
secure memory */
rc = assuan_inquire (ctx, command, &value, &valuelen, MAXLEN_PIN);
free (command);
if (rc)
return map_assuan_err (rc);
if (!valuelen || value[valuelen-1])
{
/* We require that the returned value is an UTF-8 string */
xfree (value);
return GNUPG_Invalid_Response;
}
*retstr = value;
return 0;
}
/* PKSIGN <hexified_id>
*/
@ -337,11 +374,28 @@ cmd_pksign (ASSUAN_CONTEXT ctx, char *line)
{
CTRL ctrl = assuan_get_pointer (ctx);
int rc;
void *outdata;
size_t outdatalen;
if ((rc = open_card (ctrl)))
return rc;
rc = card_create_signature (ctrl->card_ctx,
line, GCRY_MD_SHA1,
pin_cb, ctx,
ctrl->in_data.value, ctrl->in_data.valuelen,
&outdata, &outdatalen);
if (rc)
{
log_error ("card_create_signature failed: %s\n", gnupg_strerror (rc));
}
else
{
rc = assuan_send_data (ctx, outdata, outdatalen);
xfree (outdata);
if (rc)
return rc; /* that is already an assuan error code */
}
return map_to_assuan_status (rc);
}