/* -*-c-*-
*
- * $Id: dsa-verify.c,v 1.5 2000/10/08 12:13:17 mdw Exp $
+ * $Id: dsa-verify.c,v 1.7 2004/04/08 01:36:15 mdw Exp $
*
* DSA signature verification
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: dsa-verify.c,v $
- * Revision 1.5 2000/10/08 12:13:17 mdw
- * Use @MP_EQ@ instead of @MP_CMP@.
- *
- * Revision 1.4 2000/06/17 10:53:35 mdw
- * Typesetting fixes.
- *
- * Revision 1.3 1999/12/10 23:18:38 mdw
- * Change interface for suggested destinations.
- *
- * Revision 1.2 1999/11/23 00:20:04 mdw
- * Remove stray debugging code.
- *
- * Revision 1.1 1999/11/19 19:28:00 mdw
- * Implementation of the Digital Signature Algorithm.
- *
- */
-
/*----- Header files ------------------------------------------------------*/
#include "dsa.h"
{
mpmont pm, qm;
mp *w;
- mpmont_factor f[2];
+ mp_expfactor f[2];
int ok;
/* --- Ensure that all of the signature bits are in range --- */
/* --- Compute %$w = s^{-1} \bmod q$% --- */
{
- mp *z = MP_NEW;
- mp_gcd(0, 0, &z, dp->q, s);
+ mp *z = mp_modinv(MP_NEW, s, dp->q);
w = mpmont_mul(&qm, MP_NEW, z, qm.r2);
mp_drop(z);
}