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Fix for extended length Le in decipher

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This commit is contained in:
Werner Koch 2009-09-03 10:57:23 +00:00
parent 64c8f1777c
commit 983f91937c
7 changed files with 47 additions and 33 deletions
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20
scd/app-openpgp.c
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@ -16,8 +16,6 @@
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
* $Id$
*/
/* Some notes:
@ -3316,7 +3314,7 @@ do_decipher (app_t app, const char *keyidstr,
const char *s;
int n;
const char *fpr = NULL;
int exmode;
int exmode, le_value;
if (!keyidstr || !*keyidstr || !indatalen)
return gpg_error (GPG_ERR_INV_VALUE);
@ -3399,16 +3397,22 @@ do_decipher (app_t app, const char *keyidstr,
indatalen = fixuplen + indatalen;
padind = -1; /* Already padded. */
}
if (app->app_local->cardcap.ext_lc_le && indatalen > 254 )
exmode = 1; /* Extended length w/o a limit. */
{
exmode = 1; /* Extended length w/o a limit. */
le_value = app->app_local->extcap.max_rsp_data;
}
else if (app->app_local->cardcap.cmd_chaining && indatalen > 254)
exmode = -254; /* Command chaining with max. 254 bytes. */
{
exmode = -254; /* Command chaining with max. 254 bytes. */
le_value = 0;
}
else
exmode = 0;
exmode = le_value = 0;
rc = iso7816_decipher (app->slot, exmode,
indata, indatalen, padind,
indata, indatalen, le_value, padind,
outdata, outdatalen);
xfree (fixbuf);
}