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comparison sha224.c @ 3:7faae8f46238 libtomcrypt-orig

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Branch renaming
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:25:41 +0000
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children 6362d3854bb4
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-1:000000000000 3:7faae8f46238
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 *
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
5 *
6 * The library is free for all purposes without any express
7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.org
10 */
11
12 /* SHA-224 new NIST standard based off of SHA-256 truncated to 224 bits */
13 const struct _hash_descriptor sha224_desc =
14 {
15 "sha224",
16 10,
17 28,
18 64,
19 &sha224_init,
20 &sha256_process,
21 &sha224_done,
22 &sha224_test
23 };
24
25 /* init the sha256 er... sha224 state ;-) */
26 void sha224_init(hash_state * md)
27 {
28 _ARGCHK(md != NULL);
29
30 md->sha256.curlen = 0;
31 md->sha256.length = 0;
32 md->sha256.state[0] = 0xc1059ed8UL;
33 md->sha256.state[1] = 0x367cd507UL;
34 md->sha256.state[2] = 0x3070dd17UL;
35 md->sha256.state[3] = 0xf70e5939UL;
36 md->sha256.state[4] = 0xffc00b31UL;
37 md->sha256.state[5] = 0x68581511UL;
38 md->sha256.state[6] = 0x64f98fa7UL;
39 md->sha256.state[7] = 0xbefa4fa4UL;
40 }
41
42 int sha224_done(hash_state * md, unsigned char *hash)
43 {
44 unsigned char buf[32];
45 int err;
46
47 err = sha256_done(md, buf);
48 memcpy(hash, buf, 28);
49 #ifdef CLEAN_STACK
50 zeromem(buf, sizeof(buf));
51 #endif
52 return err;
53 }
54
55 int sha224_test(void)
56 {
57 #ifndef LTC_TEST
58 return CRYPT_NOP;
59 #else
60 static const struct {
61 char *msg;
62 unsigned char hash[28];
63 } tests[] = {
64 { "abc",
65 { 0x23, 0x09, 0x7d, 0x22, 0x34, 0x05, 0xd8,
66 0x22, 0x86, 0x42, 0xa4, 0x77, 0xbd, 0xa2,
67 0x55, 0xb3, 0x2a, 0xad, 0xbc, 0xe4, 0xbd,
68 0xa0, 0xb3, 0xf7, 0xe3, 0x6c, 0x9d, 0xa7 }
69 },
70 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
71 { 0x75, 0x38, 0x8b, 0x16, 0x51, 0x27, 0x76,
72 0xcc, 0x5d, 0xba, 0x5d, 0xa1, 0xfd, 0x89,
73 0x01, 0x50, 0xb0, 0xc6, 0x45, 0x5c, 0xb4,
74 0xf5, 0x8b, 0x19, 0x52, 0x52, 0x25, 0x25 }
75 },
76 };
77
78 int i;
79 unsigned char tmp[28];
80 hash_state md;
81
82 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
83 sha224_init(&md);
84 sha224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
85 sha224_done(&md, tmp);
86 if (memcmp(tmp, tests[i].hash, 28) != 0) {
87 return CRYPT_FAIL_TESTVECTOR;
88 }
89 }
90 return CRYPT_OK;
91 #endif
92 }
93