/* -*-c-*-
*
- * $Id: dh-limlee.c,v 1.1 2000/07/29 10:01:31 mdw Exp $
+ * $Id: dh-limlee.c,v 1.3 2004/04/08 01:36:15 mdw Exp $
*
* Generate Diffie-Hellman parameters from Lim-Lee primes
*
* MA 02111-1307, USA.
*/
-/*----- Revision history --------------------------------------------------*
- *
- * $Log: dh-limlee.c,v $
- * Revision 1.1 2000/07/29 10:01:31 mdw
- * Diffie-Hellman parameter generation based on Lim-Lee primes.
- *
- */
-
/*----- Header files ------------------------------------------------------*/
#include "dh.h"
if ((dp->p = limlee("p", MP_NEW, MP_NEW, ql, pl,
r, steps, oev, oec, iev, iec, &nff, &ff)) == 0)
return (PGEN_FAIL);
- dp->q = mp_copy(ff[0]);
/* --- Now find a primitive element --- */
mpmont_create(&pc.mm, dp->p);
pp = mp_sub(MP_NEW, dp->p, MP_ONE);
if (flags & DH_SUBGROUP) {
+ dp->q = mp_copy(ff[0]);
pc.exp = MP_NEW;
mp_div(&pc.exp, 0, pp, dp->q);
pc.n = 0;
pc.f = 0;
} else {
+ dp->q = mp_lsr(MP_NEW, dp->p, 1);
pc.exp = MP_TWO;
pc.n = nff;
pc.f = xmalloc(nff * sizeof(mp *));