pgen-safe: Expunge.

[u/mdw/catacomb] / pgen-safe.c

diff --git a/pgen-safe.c b/pgen-safe.c
deleted file mode 100644 (file)
index bd644dc..0000000
--- a/pgen-safe.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/* -*-c-*-
- *
- * $Id: pgen-safe.c,v 1.5 2004/04/08 01:36:15 mdw Exp $
- *
- * Safe prime generation
- *
- * (c) 1999 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------* 
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- * 
- * Catacomb is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Library General Public License for more details.
- * 
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#include "mp.h"
-#include "mprand.h"
-#include "pgen.h"
-
-/*----- Main code ---------------------------------------------------------*/
-
-/* --- @pgen_safestep@ --- *
- *
- * Steps two numbers, %$q$% and %$p = 2q + 1$%, such that neither has any
- * small factors.  %$p$% is put in the event block.
- */
-
-int pgen_safestep(int rq, pgen_event *ev, void *p)
-{
-  pgen_safestepctx *c = p;
-  int rc = PGEN_ABORT, qrc = 0;
-
-  switch (rq) {
-
-    /* --- Set up the contexts --- */
-
-    case PGEN_BEGIN: {
-      mp *p = mp_split(MP_COPY(ev->m));
-      mp *q;
-      p->v[0] |= 3;
-      q = mp_lsr(MP_NEW, p, 1);
-      rc = pfilt_create(&c->p, p);
-      qrc = pfilt_create(&c->q, q);
-      mp_drop(p); mp_drop(q);
-    } break;
-
-    /* --- Step along --- */
-
-    case PGEN_TRY:
-      mp_drop(ev->m);
-      rc = pfilt_step(&c->p, 4);
-      qrc = pfilt_step(&c->q, 2);
-      break;
-
-      break;
-
-    /* --- Tidy the toys away --- */
-
-    case PGEN_DONE:
-      pfilt_destroy(&c->q);
-      pfilt_destroy(&c->p);
-      return (PGEN_DONE);
-  }
-
-  /* --- Continue stepping if necessary --- */
-
-  while (rc == PGEN_FAIL || qrc == PGEN_FAIL) {
-    rc = pfilt_step(&c->p, 4);
-    qrc = pfilt_step(&c->q, 2);
-  }
-
-  ev->m = MP_COPY(c->p.m);
-  if (qrc == PGEN_TRY)
-    rc = PGEN_TRY;
-  return (rc);
-}
-
-/* --- @pgen_safejump@ --- *
- *
- * Jumps two numbers, %$q$% and %$p = 2q + 1$% such that neither has any
- * small factors.
- */
-
-int pgen_safejump(int rq, pgen_event *ev, void *p)
-{
-  pgen_safejumpctx *j = p;
-  int rc = PGEN_ABORT, qrc = 0;
-
-  switch (rq) {
-
-    /* --- Set up the jump contexts --- *
-     *
-     * The jump in @j.q@ is congruent to 2 (mod 4); see @strongprime_setup@.
-     * If @p@ is initially 1 (mod 4) then add @j.q@.  Then double @j.q@ to
-     * ensure that the step is 0 (mod 4).  Ensure that @jq@ and @q@ don't
-     * have any common factors.
-     */
-
-    case PGEN_BEGIN: {
-      mp *p = ev->m;
-      mp *q;
-      mp *g = MP_NEW;
-      if ((p->v[0] & 3) != 3)
-       p = mp_add(p, p, j->jq.m);
-      q = mp_lsr(MP_NEW, p, 1);
-      mp_gcd(&g, 0, 0, p, j->jq.m);
-      if (MP_CMP(g, >, MP_ONE)) {
-       ev->m = p;
-       mp_drop(q);
-       mp_drop(g);
-       return (PGEN_ABORT);
-      }
-      mp_drop(g);
-      rc = pfilt_create(&j->p, p);
-      pfilt_muladd(&j->jp, &j->jq, 2, 0);
-      qrc = pfilt_create(&j->q, q);
-      mp_drop(p);
-      mp_drop(q);
-    } break;
-
-    /* --- Step on one place --- */
-
-    case PGEN_TRY:
-      mp_drop(ev->m);
-      rc = pfilt_jump(&j->p, &j->jp);
-      qrc = pfilt_jump(&j->q, &j->jq);
-      break;
-
-    /* --- Tidy everything up --- */
-
-    case PGEN_DONE:
-      pfilt_destroy(&j->jp);
-      pfilt_destroy(&j->p);
-      pfilt_destroy(&j->q);
-      return (PGEN_DONE);
-  }
-
-  /* --- Step on while @p@ or @q@ have small factors --- */
-
-  while (rc == PGEN_FAIL || qrc == PGEN_FAIL) {
-    rc = pfilt_jump(&j->p, &j->jp);
-    qrc = pfilt_jump(&j->q, &j->jq);
-  }
-  ev->m = MP_COPY(j->p.m);
-  if (qrc == PGEN_TRY)
-    rc = PGEN_TRY;
-  return (rc);
-}
-
-/* --- @pgen_safetest@ --- *
- *
- * Applies Rabin-Miller tests to %$p$% and %$q$%.
- */
-
-int pgen_safetest(int rq, pgen_event *ev, void *p)
-{
-  pgen_safetestctx *c = p;
-  int rc = PGEN_ABORT;
-
-  switch (rq) {
-    case PGEN_BEGIN:
-      rabin_create(&c->q, c->c.q.m);
-      rabin_create(&c->p, c->c.p.m);
-      rc = PGEN_TRY;
-      break;
-    case PGEN_TRY: {
-      mp *m = mprand_range(MP_NEW, c->c.p.m, ev->r, 0);
-      rc = rabin_test(&c->p, m);
-      if (rc == PGEN_PASS) {
-       m = mprand_range(m, c->c.q.m, ev->r, 0);
-       rc = rabin_test(&c->q, m);
-      }
-      mp_drop(m);
-    } break;
-    case PGEN_DONE:
-      rabin_destroy(&c->q);
-      rabin_destroy(&c->p);
-      break;
-  }
-  return (rc);
-}
-
-/*----- That's all, folks -------------------------------------------------*/