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-rw-r--r--security/nss/lib/freebl/mpi/utils/lap.c118
1 files changed, 118 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/utils/lap.c b/security/nss/lib/freebl/mpi/utils/lap.c
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+/*
+ * lap.c
+ *
+ * Find least annihilating power of a mod m
+ *
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is the MPI Arbitrary Precision Integer Arithmetic
+ * library.
+ *
+ * The Initial Developer of the Original Code is Michael J. Fromberger.
+ * Portions created by Michael J. Fromberger are
+ * Copyright (C) 1998, 1999, 2000 Michael J. Fromberger.
+ * All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License Version 2 or later (the
+ * "GPL"), in which case the provisions of the GPL are applicable
+ * instead of those above. If you wish to allow use of your
+ * version of this file only under the terms of the GPL and not to
+ * allow others to use your version of this file under the MPL,
+ * indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by
+ * the GPL. If you do not delete the provisions above, a recipient
+ * may use your version of this file under either the MPL or the GPL.
+ *
+ * $Id$
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#include "mpi.h"
+
+void sig_catch(int ign);
+
+int g_quit = 0;
+
+int main(int argc, char *argv[])
+{
+ mp_int a, m, p, k;
+
+ if(argc < 3) {
+ fprintf(stderr, "Usage: %s <a> <m>\n", argv[0]);
+ return 1;
+ }
+
+ mp_init(&a);
+ mp_init(&m);
+ mp_init(&p);
+ mp_add_d(&p, 1, &p);
+
+ mp_read_radix(&a, argv[1], 10);
+ mp_read_radix(&m, argv[2], 10);
+
+ mp_init_copy(&k, &a);
+
+ signal(SIGINT, sig_catch);
+#ifndef __OS2__
+ signal(SIGHUP, sig_catch);
+#endif
+ signal(SIGTERM, sig_catch);
+
+ while(mp_cmp(&p, &m) < 0) {
+ if(g_quit) {
+ int len;
+ char *buf;
+
+ len = mp_radix_size(&p, 10);
+ buf = malloc(len);
+ mp_toradix(&p, buf, 10);
+
+ fprintf(stderr, "Terminated at: %s\n", buf);
+ free(buf);
+ return 1;
+ }
+ if(mp_cmp_d(&k, 1) == 0) {
+ int len;
+ char *buf;
+
+ len = mp_radix_size(&p, 10);
+ buf = malloc(len);
+ mp_toradix(&p, buf, 10);
+
+ printf("%s\n", buf);
+
+ free(buf);
+ break;
+ }
+
+ mp_mulmod(&k, &a, &m, &k);
+ mp_add_d(&p, 1, &p);
+ }
+
+ if(mp_cmp(&p, &m) >= 0)
+ printf("No annihilating power.\n");
+
+ mp_clear(&p);
+ mp_clear(&m);
+ mp_clear(&a);
+ return 0;
+}
+
+void sig_catch(int ign)
+{
+ g_quit = 1;
+}