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Code Activity

* app-openpgp.c (do_setattr): Add setting of the URL.

Browse Source 
(app_select_openpgp): Dump card data only in very verbose mode.
(do_decipher): New.
This commit is contained in:
Werner Koch 2003-07-03 18:10:13 +00:00
parent d1165b2132
commit 8b9f0bda3d
11 changed files with 207 additions and 37 deletions
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12
scd/ChangeLog
View File

@ -1,3 +1,15 @@
2003-07-03 Werner Koch <wk@gnupg.org>
* app-openpgp.c (do_setattr): Add setting of the URL.
(app_select_openpgp): Dump card data only in very verbose mode.
(do_decipher): New.
2003-07-02 Werner Koch <wk@gnupg.org>
* app-openpgp.c (get_sig_counter): New.
(do_sign): Print the signature counter and enable the PIN callback.
(do_genkey): Implement the PIN callback.
2003-07-01 Werner Koch <wk@gnupg.org>
* app-openpgp.c (store_fpr): Fixed fingerprint calculation.

8
scd/app-common.h
View File

@ -43,12 +43,12 @@ struct app_ctx_s {
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen );
unsigned char **outdata, size_t *outdatalen );
int (*decipher) (APP app, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen);
unsigned char **outdata, size_t *outdatalen);
int (*genkey) (APP app, CTRL ctrl,
const char *keynostr, unsigned int flags,
int (*pincb)(void*, const char *, char **),
@ -70,12 +70,12 @@ int app_sign (APP app, const char *keyidstr, int hashalgo,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen );
unsigned char **outdata, size_t *outdatalen );
int app_decipher (APP app, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen );
unsigned char **outdata, size_t *outdatalen );
int app_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
int (*pincb)(void*, const char *, char **),
void *pincb_arg);

191
scd/app-openpgp.c
View File

@ -176,15 +176,19 @@ get_one_do (int slot, int tag, unsigned char **result, size_t *nbytes)
&buffer, &buflen);
if (!rc)
{
value = find_tlv (buffer, buflen, tag, &valuelen, 0);
if (!value)
; /* not found */
else if (valuelen > buflen - (value - buffer))
const unsigned char *s;
s = find_tlv (buffer, buflen, tag, &valuelen, 0);
if (!s)
value = NULL; /* not found */
else if (valuelen > buflen - (s - buffer))
{
log_error ("warning: constructed DO too short\n");
value = NULL;
xfree (buffer); buffer = NULL;
}
else
value = buffer + (s - buffer);
}
}
@ -436,7 +440,7 @@ do_learn_status (APP app, CTRL ctrl)
send_status_info (ctrl, "DISP-NAME", value, valuelen, NULL, 0);
xfree (relptr);
}
relptr = get_one_do (app->slot, 0x5FF0, &value, &valuelen);
relptr = get_one_do (app->slot, 0x5F50, &value, &valuelen);
if (relptr)
{
send_status_info (ctrl, "PUBKEY-URL", value, valuelen, NULL, 0);
@ -479,8 +483,8 @@ do_setattr (APP app, const char *name,
{
char *pinvalue;
/* rc = pincb (pincb_arg, "Please enter the card's admin PIN (CHV3)", */
/* &pinvalue); */
rc = pincb (pincb_arg, "Admin PIN (CHV3)",
&pinvalue);
pinvalue = xstrdup ("12345678");
rc = 0;
if (rc)
@ -515,6 +519,15 @@ do_setattr (APP app, const char *name,
rc = gpg_error (GPG_ERR_GENERAL);
}
}
else if (!strcmp (name, "PUBKEY-URL"))
{
rc = iso7816_put_data (app->slot, 0x5F50, value, valuelen);
if (rc)
{
log_error ("failed to set `Pubkey-URL'\n");
rc = gpg_error (GPG_ERR_GENERAL);
}
}
else
rc = gpg_error (GPG_ERR_INV_NAME);
@ -539,6 +552,7 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
time_t created_at;
int keyno = atoi (keynostr);
int force = (flags & 1);
time_t start_at;
if (keyno < 1 || keyno > 3)
return gpg_error (GPG_ERR_INV_ID);
@ -571,7 +585,17 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
else
log_info ("generating new key\n");
rc = iso7816_verify (app->slot, 0x83, "12345678", 8);
{
char *pinvalue;
rc = pincb (pincb_arg, "Admin PIN", &pinvalue);
if (rc)
{
log_error ("error getting PIN: %s\n", gpg_strerror (rc));
return rc;
}
rc = iso7816_verify (app->slot, 0x83, pinvalue, strlen (pinvalue));
xfree (pinvalue);
}
if (rc)
{
log_error ("verify CHV3 failed: rc=%04X\n", rc);
@ -580,6 +604,8 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
xfree (buffer); buffer = NULL;
#if 1
log_info ("please wait while key is being generated ...\n");
start_at = time (NULL);
rc = iso7816_generate_keypair
#else
#warning key generation temporary replaced by reading an existing key.
@ -596,6 +622,8 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
log_error ("generating key failed\n");
goto leave;
}
log_info ("key generation completed (%d seconds)\n",
(int)(time (NULL) - start_at));
keydata = find_tlv (buffer, buflen, 0x7F49, &keydatalen, 0);
if (!keydata)
{
@ -609,7 +637,7 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
log_error ("response does not contain the RSA modulus\n");
goto leave;
}
log_printhex ("RSA n:", m, mlen);
/* log_printhex ("RSA n:", m, mlen); */
send_key_data (ctrl, "n", m, mlen);
e = find_tlv (keydata, keydatalen, 0x0082, &elen, 0);
@ -618,7 +646,7 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
log_error ("response does not contain the RSA public exponent\n");
goto leave;
}
log_printhex ("RSA e:", e, elen);
/* log_printhex ("RSA e:", e, elen); */
send_key_data (ctrl, "e", e, elen);
created_at = gnupg_get_time ();
@ -639,6 +667,28 @@ do_genkey (APP app, CTRL ctrl, const char *keynostr, unsigned int flags,
}
static unsigned long
get_sig_counter (APP app)
{
void *relptr;
unsigned char *value;
size_t valuelen;
unsigned long ul;
relptr = get_one_do (app->slot, 0x0093, &value, &valuelen);
if (!relptr)
return 0;
if (valuelen == 3 )
ul = (value[0] << 16) | (value[1] << 8) | value[2];
else
{
log_error ("invalid structure of OpenPGP card (DO 0x93)\n");
ul = 0;
}
xfree (relptr);
return ul;
}
static int
compare_fingerprint (APP app, int keyno, unsigned char *sha1fpr)
{
@ -688,7 +738,7 @@ do_sign (APP app, const char *keyidstr, int hashalgo,
int (*pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
static unsigned char sha1_prefix[15] = /* Object ID is 1.3.14.3.2.26 */
{ 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
@ -702,6 +752,7 @@ do_sign (APP app, const char *keyidstr, int hashalgo,
const char *s;
int n;
const char *fpr = NULL;
unsigned long sigcount;
if (!keyidstr || !*keyidstr)
return gpg_error (GPG_ERR_INV_VALUE);
@ -731,7 +782,7 @@ do_sign (APP app, const char *keyidstr, int hashalgo,
if (memcmp (app->serialno, tmp_sn, 16))
return gpg_error (GPG_ERR_WRONG_CARD);
/* If a fingerprint has been speicified check it against the one on
/* If a fingerprint has been specified check it against the one on
the card. This is allows for a meaningful error message in case
the key on the card has been replaced but the shadow information
known to gpg was not updated. If there is no fingerprint, gpg
@ -763,14 +814,24 @@ do_sign (APP app, const char *keyidstr, int hashalgo,
return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
memcpy (data+15, indata, indatalen);
sigcount = get_sig_counter (app);
log_info ("signatures created so far: %lu\n", sigcount);
if (!app->did_chv1)
/* FIXME: Check whether we are really required to enter the PIN for
each signature. There is a DO for this. */
if (!app->did_chv1 || 1)
{
char *pinvalue;
/* rc = pincb (pincb_arg, "signature PIN", &pinvalue); */
pinvalue = xstrdup ("123456");
rc = 0;
{
char *prompt;
if (asprintf (&prompt, "Signature PIN [sigs done: %lu]", sigcount) < 0)
return gpg_error_from_errno (errno);
rc = pincb (pincb_arg, prompt, &pinvalue);
free (prompt);
}
/* pinvalue = xstrdup ("123456"); */
/* rc = 0; */
if (rc)
{
log_info ("PIN callback returned error: %s\n", gpg_strerror (rc));
@ -789,11 +850,103 @@ do_sign (APP app, const char *keyidstr, int hashalgo,
}
rc = iso7816_compute_ds (app->slot, data, 35, outdata, outdatalen);
return rc;
}
static int
do_decipher (APP app, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
unsigned char **outdata, size_t *outdatalen )
{
int rc;
unsigned char tmp_sn[20]; /* actually 16 but we use it also for the fpr. */
const char *s;
int n;
const char *fpr = NULL;
if (!keyidstr || !*keyidstr || !indatalen)
return gpg_error (GPG_ERR_INV_VALUE);
/* Check whether an OpenPGP card of any version has been requested. */
if (strlen (keyidstr) < 32 || strncmp (keyidstr, "D27600012401", 12))
return gpg_error (GPG_ERR_INV_ID);
for (s=keyidstr, n=0; hexdigitp (s); s++, n++)
;
if (n != 32)
return gpg_error (GPG_ERR_INV_ID);
else if (!*s)
; /* no fingerprint given: we allow this for now. */
else if (*s == '/')
fpr = s + 1;
else
return gpg_error (GPG_ERR_INV_ID);
for (s=keyidstr, n=0; n < 16; s += 2, n++)
tmp_sn[n] = xtoi_2 (s);
if (app->serialnolen != 16)
return gpg_error (GPG_ERR_INV_CARD);
if (memcmp (app->serialno, tmp_sn, 16))
return gpg_error (GPG_ERR_WRONG_CARD);
/* If a fingerprint has been specified check it against the one on
the card. This is allows for a meaningful error message in case
the key on the card has been replaced but the shadow information
known to gpg was not updated. If there is no fingerprint, the
decryption will won't produce the right plaintext anyway. */
if (fpr)
{
for (s=fpr, n=0; hexdigitp (s); s++, n++)
;
if (n != 40)
return gpg_error (GPG_ERR_INV_ID);
else if (!*s)
; /* okay */
else
return gpg_error (GPG_ERR_INV_ID);
for (s=fpr, n=0; n < 20; s += 2, n++)
tmp_sn[n] = xtoi_2 (s);
rc = compare_fingerprint (app, 2, tmp_sn);
if (rc)
return rc;
}
if (!app->did_chv2)
{
char *pinvalue;
rc = pincb (pincb_arg, "Decryption PIN", &pinvalue);
/* pinvalue = xstrdup ("123456"); */
/* rc = 0; */
if (rc)
{
log_info ("PIN callback returned error: %s\n", gpg_strerror (rc));
return rc;
}
rc = iso7816_verify (app->slot, 0x82, pinvalue, strlen (pinvalue));
xfree (pinvalue);
if (rc)
{
log_error ("verify CHV2 failed\n");
rc = gpg_error (GPG_ERR_GENERAL);
return rc;
}
app->did_chv2 = 1;
}
rc = iso7816_decipher (app->slot, indata, indatalen, outdata, outdatalen);
return rc;
}
/* Select the OpenPGP application on the card in SLOT. This function
must be used before any other OpenPGP application functions. */
int
@ -827,12 +980,14 @@ app_select_openpgp (APP app, unsigned char **sn, size_t *snlen)
else
xfree (buffer);
dump_all_do (slot);
if (opt.verbose > 1)
dump_all_do (slot);
app->fnc.learn_status = do_learn_status;
app->fnc.setattr = do_setattr;
app->fnc.genkey = do_genkey;
app->fnc.sign = do_sign;
app->fnc.decipher = do_decipher;
}
leave:

4
scd/app.c
View File

@ -138,7 +138,7 @@ app_sign (APP app, const char *keyidstr, int hashalgo,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
int rc;
@ -166,7 +166,7 @@ app_decipher (APP app, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
int rc;

4
scd/card-common.h
View File

@ -48,12 +48,12 @@ struct card_ctx_s {
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen );
unsigned char **outdata, size_t *outdatalen );
int (*decipher) (CARD card, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen);
unsigned char **outdata, size_t *outdatalen);
} fnc;
};

4
scd/card-p15.c
View File

@ -382,7 +382,7 @@ p15_sign (CARD card, const char *keyidstr, int hashalgo,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
unsigned int cryptflags;
struct sc_pkcs15_object *keyobj;
@ -432,7 +432,7 @@ p15_decipher (CARD card, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
struct sc_pkcs15_object *keyobj;
int rc;

4
scd/card.c
View File

@ -512,7 +512,7 @@ card_sign (CARD card, const char *keyidstr, int hashalgo,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
int rc;
@ -540,7 +540,7 @@ card_decipher (CARD card, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen )
unsigned char **outdata, size_t *outdatalen )
{
int rc;

4
scd/command.c
View File

@ -565,7 +565,7 @@ cmd_pksign (ASSUAN_CONTEXT ctx, char *line)
{
CTRL ctrl = assuan_get_pointer (ctx);
int rc;
void *outdata;
unsigned char *outdata;
size_t outdatalen;
char *keyidstr;
@ -615,7 +615,7 @@ cmd_pkdecrypt (ASSUAN_CONTEXT ctx, char *line)
{
CTRL ctrl = assuan_get_pointer (ctx);
int rc;
void *outdata;
unsigned char *outdata;
size_t outdatalen;
char *keyidstr;

6
scd/iso7816.c
View File

@ -140,7 +140,7 @@ iso7816_compute_ds (int slot, const unsigned char *data, size_t datalen,
if (sw != SW_SUCCESS)
{
/* Make sure that pending buffers are released. */
xfree (result);
xfree (*result);
*result = NULL;
*resultlen = 0;
return -1; /* FIXME: Map error codes. */
@ -178,7 +178,7 @@ iso7816_decipher (int slot, const unsigned char *data, size_t datalen,
if (sw != SW_SUCCESS)
{
/* Make sure that pending buffers are released. */
xfree (result);
xfree (*result);
*result = NULL;
*resultlen = 0;
return -1; /* FIXME: Map error codes. */
@ -205,7 +205,7 @@ iso7816_internal_authenticate (int slot,
if (sw != SW_SUCCESS)
{
/* Make sure that pending buffers are released. */
xfree (result);
xfree (*result);
*result = NULL;
*resultlen = 0;
return -1; /* FIXME: Map error codes. */

3
scd/sc-investigate.c
View File

@ -140,6 +140,9 @@ main (int argc, char **argv )
if (log_get_errorcount(0))
exit(2);
if (opt.verbose < 2)
opt.verbose = 2; /* hack to let select_openpgp print some info. */
if (argc)
usage (1);

4
scd/scdaemon.h
View File

@ -116,12 +116,12 @@ int card_sign (CARD card,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen );
unsigned char **outdata, size_t *outdatalen );
int card_decipher (CARD card, const char *keyidstr,
int (pincb)(void*, const char *, char **),
void *pincb_arg,
const void *indata, size_t indatalen,
void **outdata, size_t *outdatalen);
unsigned char **outdata, size_t *outdatalen);
#endif /*SCDAEMON_H*/