diff -r 000000000000 -r 6474c204b198 security/nss/lib/freebl/mpi/tests/mptest-4a.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/security/nss/lib/freebl/mpi/tests/mptest-4a.c	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,105 @@
+/* 
+ *  mptest4a - modular exponentiation speed test 
+ *
+ * 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/. */
+
+#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;
+}