secure/lib/libcipher/test/speeddes.c

   1 #include <sys/types.h>
   2 #include <sys/time.h>
   3 #include <sys/resource.h>
   4 #include <signal.h>
   5 #include <stdio.h>
   6
   7 int             keep_going, count, alternate, seconds, iters;
   8 struct rusage   prior, now;
   9 u_long          block[3];
  10 char            *blk;
  11
  12 void
  13 finish()
  14 {
  15         keep_going = 0;
  16 }
  17
  18
  19 main(int argc, char *argv[])
  20 {
  21         struct itimerval itv;
  22         u_long  msecs;
  23
  24         if (argc < 2 || sscanf(argv[1], "%d", &seconds) != 1)
  25                 seconds = 20;
  26
  27         if (argc < 3 || sscanf(argv[2], "%d", &iters) != 1)
  28                 iters = 1;
  29
  30         printf ("Running des_cipher( , , 0L, %d) for %d seconds of vtime...\n",
  31                 iters, seconds);
  32
  33         bzero(&itv, sizeof (itv));
  34         signal (SIGVTALRM, finish);
  35         itv.it_value.tv_sec = seconds;
  36         itv.it_value.tv_usec = 0;
  37         setitimer(ITIMER_VIRTUAL, &itv, NULL);
  38
  39         keep_going = 1;
  40         if (getrusage(0, &prior) < 0) {
  41                 perror("getrusage");
  42                 exit(1);
  43         }
  44
  45         blk = (char *) block;
  46         (void)des_setkey(blk);
  47         for (count = 0; keep_going; count++)
  48                 (void) des_cipher(blk, blk, 0, iters);
  49
  50         if (getrusage(0, &now) < 0) {
  51                 perror("getrusage");
  52                 exit(1);
  53         }
  54
  55         msecs = (now.ru_utime.tv_sec - prior.ru_utime.tv_sec) * 1000
  56               + (now.ru_utime.tv_usec - prior.ru_utime.tv_usec) / 1000;
  57         printf ("Did %d encryptions per second, each of %d iteration(s).\n",
  58                 1000 * count / msecs, iters);
  59         printf ("\tTotal %d blocks per second.\n", (1000*iters*count)/msecs);
  60         exit(0);
  61 }