1#include <tomcrypt_test.h>
2
3#ifdef PKCS_1
4
5int pkcs_1_test(void)
6{
7   unsigned char buf[3][128];
8   int res1, res2, res3, prng_idx, hash_idx, err;
9   unsigned long x, y, l1, l2, l3, i1, i2, lparamlen, saltlen, modlen;
10   static const unsigned char lparam[] = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 };
11
12   /* get hash/prng  */
13   hash_idx = find_hash("sha1");
14   prng_idx = find_prng("yarrow");
15
16   if (hash_idx == -1 || prng_idx == -1) {
17      fprintf(stderr, "pkcs_1 tests require sha1/yarrow");
18      return 1;
19   }
20
21   srand(time(NULL));
22   /* do many tests */
23   for (x = 0; x < 100; x++) {
24      zeromem(buf, sizeof(buf));
25
26      /* make a dummy message (of random length) */
27      l3 = (rand() & 31) + 8;
28      for (y = 0; y < l3; y++) buf[0][y] = rand() & 255;
29
30      /* pick a random lparam len [0..16] */
31      lparamlen = abs(rand()) % 17;
32
33      /* pick a random saltlen 0..16 */
34      saltlen   = abs(rand()) % 17;
35
36      /* PKCS #1 v2.0 supports modlens not multiple of 8 */
37      modlen = 800 + (abs(rand()) % 224);
38
39      /* encode it */
40      l1 = sizeof(buf[1]);
41      DO(pkcs_1_oaep_encode(buf[0], l3, lparam, lparamlen, modlen, &yarrow_prng, prng_idx, hash_idx, buf[1], &l1));
42
43      /* decode it */
44      l2 = sizeof(buf[2]);
45      DO(pkcs_1_oaep_decode(buf[1], l1, lparam, lparamlen, modlen, hash_idx, buf[2], &l2, &res1));
46
47      if (res1 != 1 || l2 != l3 || memcmp(buf[2], buf[0], l3) != 0) {
48         fprintf(stderr, "Outsize == %lu, should have been %lu, res1 = %d, lparamlen = %lu, msg contents follow.\n", l2, l3, res1, lparamlen);
49         fprintf(stderr, "ORIGINAL:\n");
50         for (x = 0; x < l3; x++) {
51             fprintf(stderr, "%02x ", buf[0][x]);
52         }
53         fprintf(stderr, "\nRESULT:\n");
54         for (x = 0; x < l2; x++) {
55             fprintf(stderr, "%02x ", buf[2][x]);
56         }
57         fprintf(stderr, "\n\n");
58         return 1;
59      }
60
61      /* test PSS */
62      l1 = sizeof(buf[1]);
63      DO(pkcs_1_pss_encode(buf[0], l3, saltlen, &yarrow_prng, prng_idx, hash_idx, modlen, buf[1], &l1));
64      DO(pkcs_1_pss_decode(buf[0], l3, buf[1], l1, saltlen, hash_idx, modlen, &res1));
65
66      buf[0][i1 = abs(rand()) % l3] ^= 1;
67      DO(pkcs_1_pss_decode(buf[0], l3, buf[1], l1, saltlen, hash_idx, modlen, &res2));
68
69      buf[0][i1] ^= 1;
70      buf[1][i2 = abs(rand()) % (l1 - 1)] ^= 1;
71      pkcs_1_pss_decode(buf[0], l3, buf[1], l1, saltlen, hash_idx, modlen, &res3);
72      if (!(res1 == 1 && res2 == 0 && res3 == 0)) {
73         fprintf(stderr, "PSS failed: %d, %d, %d, %lu, %lu\n", res1, res2, res3, l3, saltlen);
74         return 1;
75      }
76   }
77   return 0;
78}
79
80#else
81
82int pkcs_1_test(void)
83{
84   fprintf(stderr, "NOP");
85   return 0;
86}
87
88#endif
89
90
91/* $Source: /cvs/libtom/libtomcrypt/testprof/pkcs_1_test.c,v $ */
92/* $Revision: 1.7 $ */
93/* $Date: 2006/11/30 03:30:45 $ */
94