memcheck/tests/freebsd/timing_safe.c

   1 #include <string.h>
   2 #include <assert.h>
   3 #include <stdlib.h>
   4
   5 int main(void)
   6 {
   7    char* s1 = "the the the";
   8    char* s2 = "the cat zat";
   9    char* d1;
  10    double undef1;
  11    double undef2;
  12    int res;
  13
  14    res = timingsafe_bcmp(s1, s2, 3);
  15    assert(res == 0);
  16    res = timingsafe_bcmp(s1, s2, 5);
  17    assert(res != 0);
  18    res = timingsafe_bcmp(s1, s1+4, 3);
  19    assert(res == 0);
  20
  21    res = timingsafe_memcmp(s1, s2, 3);
  22    assert(res == 0);
  23    res = timingsafe_memcmp(s1, s2, 5);
  24    assert(res > 0);
  25    res = timingsafe_memcmp(s1+8, s2+8, 3);
  26    assert(res < 0);
  27    res = timingsafe_memcmp(s1, s1+4, 3);
  28    assert(res == 0);
  29
  30    timingsafe_bcmp(&undef1, &undef2, 8);
  31    timingsafe_memcmp(&undef1, &undef2, 8);
  32
  33    d1 = strdup(s1);
  34
  35    timingsafe_bcmp(s1, d1, 13);
  36    timingsafe_memcmp(s1, d1, 13);
  37
  38    free(d1);
  39
  40    timingsafe_bcmp(s1, d1, 10);
  41    timingsafe_memcmp(s1, d1, 10);
  42 }