1 #include <tomcrypt_test.h>
2
3 #ifdef PKCS_1
4
pkcs_1_test(void)5 int 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
pkcs_1_test(void)82 int 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