1 files changed, 103 insertions, 0 deletions
diff --git a/lib/freebl/mpi/tests/mptest-4b.c b/lib/freebl/mpi/tests/mptest-4b.c
new file mode 100644
index 000000000..e0273c7a6
--- /dev/null
+++ b/lib/freebl/mpi/tests/mptest-4b.c
@@ -0,0 +1,103 @@
+/*
+ * mptest-4b.c
+ *
+ * Test speed of a large modular exponentiation of a primitive element
+ * modulo a prime.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+/* $Id$ */
+
+#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"
+
+char *g_prime = 
+  "34BD53C07350E817CCD49721020F1754527959C421C1533244769D4CF060A8B1C3DA"
+  "25094BE723FB1E2369B55FEEBBE0FAC16425161BF82684062B5EC5D7D47D1B23C117"
+  "0FA19745E44A55E148314E582EB813AC9EE5126295E2E380CACC2F6D206B293E5ED9"
+  "23B54EE961A8C69CD625CE4EC38B70C649D7F014432AEF3A1C93";
+char *g_gen = "5";
+
+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[])
+{
+  instant_t    start, finish;
+  mp_int       prime, gen, expt, res;
+  unsigned int ix, diff;
+  int          num;
+
+  srand(time(NULL));
+
+  if(argc < 2) {
+    fprintf(stderr, "Usage: %s <num-tests>\n", argv[0]);
+    return 1;
+  }
+
+  if((num = atoi(argv[1])) < 0)
+    num = -num;
+
+  if(num == 0)
+    ++num;
+
+  mp_init(&prime); mp_init(&gen); mp_init(&res);
+  mp_read_radix(&prime, g_prime, 16);
+  mp_read_radix(&gen, g_gen, 16);
+
+  mp_init_size(&expt, USED(&prime) - 1);
+  s_mp_pad(&expt, USED(&prime) - 1);
+
+  printf("Testing %d modular exponentations ... \n", num);
+
+  start = now();
+  for(ix = 0; ix < num; ix++) {
+    mpp_random(&expt);
+    mp_exptmod(&gen, &expt, &prime, &res);
+  }
+  finish = now();
+
+  diff = (finish.sec - start.sec) * 1000000;
+  diff += finish.usec; diff -= start.usec;
+
+  printf("%d operations took %u usec (%.3f sec)\n",
+	 num, diff, (double)diff / 1000000.0);
+  printf("That is %.3f sec per operation.\n",
+	 ((double)diff / 1000000.0) / num);
+
+  mp_clear(&expt);
+  mp_clear(&res);
+  mp_clear(&gen);
+  mp_clear(&prime);
+
+  return 0;
+}