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Diffstat (limited to 'security/nss/lib/freebl/mpi/tests/mptest-4a.c')
-rw-r--r-- | security/nss/lib/freebl/mpi/tests/mptest-4a.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/tests/mptest-4a.c b/security/nss/lib/freebl/mpi/tests/mptest-4a.c new file mode 100644 index 000000000..22610b8a5 --- /dev/null +++ b/security/nss/lib/freebl/mpi/tests/mptest-4a.c @@ -0,0 +1,135 @@ +/* + * mptest4a - modular exponentiation speed test + * + * 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 <string.h> +#include <limits.h> +#include <time.h> + +#include <sys/time.h> + +#include "mpi.h" +#include "mpprime.h" + +typedef struct { + unsigned int sec; + unsigned int usec; +} instant_t; + +instant_t now(void) +{ + struct timeval clk; + instant_t res; + + res.sec = res.usec = 0; + + if(gettimeofday(&clk, NULL) != 0) + return res; + + res.sec = clk.tv_sec; + res.usec = clk.tv_usec; + + return res; +} + +extern mp_err s_mp_pad(); + +int main(int argc, char *argv[]) +{ + int ix, num, prec = 8; + unsigned int d; + instant_t start, finish; + time_t seed; + mp_int a, m, c; + + seed = time(NULL); + + if(argc < 2) { + fprintf(stderr, "Usage: %s <num-tests> [<precision>]\n", argv[0]); + return 1; + } + + if((num = atoi(argv[1])) < 0) + num = -num; + + if(!num) { + fprintf(stderr, "%s: must perform at least 1 test\n", argv[0]); + return 1; + } + + if(argc > 2) { + if((prec = atoi(argv[2])) <= 0) + prec = 8; + } + + printf("Test 3a: Modular exponentiation timing test\n" + "Precision: %d digits (%d bits)\n" + "# of tests: %d\n\n", prec, prec * DIGIT_BIT, num); + + mp_init_size(&a, prec); + mp_init_size(&m, prec); + mp_init_size(&c, prec); + s_mp_pad(&a, prec); + s_mp_pad(&m, prec); + s_mp_pad(&c, prec); + + printf("Testing modular exponentiation ... \n"); + srand((unsigned int)seed); + + start = now(); + for(ix = 0; ix < num; ix++) { + mpp_random(&a); + mpp_random(&c); + mpp_random(&m); + mp_exptmod(&a, &c, &m, &c); + } + finish = now(); + + d = (finish.sec - start.sec) * 1000000; + d -= start.usec; d += finish.usec; + + printf("Total time elapsed: %u usec\n", d); + printf("Time per exponentiation: %u usec (%.3f sec)\n", + (d / num), (double)(d / num) / 1000000); + + mp_clear(&c); + mp_clear(&a); + mp_clear(&m); + + return 0; +} |