diff options
Diffstat (limited to 'security/nss/lib/freebl/mpi/utils/lap.c')
-rw-r--r-- | security/nss/lib/freebl/mpi/utils/lap.c | 118 |
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 new file mode 100644 index 000000000..ababed7f3 --- /dev/null +++ b/security/nss/lib/freebl/mpi/utils/lap.c @@ -0,0 +1,118 @@ +/* + * 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; +} |