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comparison libtomcrypt/src/hashes/sha2/sha224.c @ 399:a707e6148060

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merge of '5fdf69ca60d1683cdd9f4c2595134bed26394834' and '6b61c50f4cf888bea302ac8fcf5dbb573b443251'
author Matt Johnston <matt@ucc.asn.au>
date Sat, 03 Feb 2007 08:20:34 +0000
parents 0cbe8f6dbf9e
children f849a5ca2efc
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394:17d097fc111c 399:a707e6148060
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.com
10 */
11 /**
12 @param sha224.c
13 SHA-224 new NIST standard based off of SHA-256 truncated to 224 bits (Tom St Denis)
14 */
15
16 const struct ltc_hash_descriptor sha224_desc =
17 {
18 "sha224",
19 10,
20 28,
21 64,
22
23 /* OID */
24 { 2, 16, 840, 1, 101, 3, 4, 2, 4, },
25 9,
26
27 &sha224_init,
28 &sha256_process,
29 &sha224_done,
30 &sha224_test,
31 NULL
32 };
33
34 /* init the sha256 er... sha224 state ;-) */
35 /**
36 Initialize the hash state
37 @param md The hash state you wish to initialize
38 @return CRYPT_OK if successful
39 */
40 int sha224_init(hash_state * md)
41 {
42 LTC_ARGCHK(md != NULL);
43
44 md->sha256.curlen = 0;
45 md->sha256.length = 0;
46 md->sha256.state[0] = 0xc1059ed8UL;
47 md->sha256.state[1] = 0x367cd507UL;
48 md->sha256.state[2] = 0x3070dd17UL;
49 md->sha256.state[3] = 0xf70e5939UL;
50 md->sha256.state[4] = 0xffc00b31UL;
51 md->sha256.state[5] = 0x68581511UL;
52 md->sha256.state[6] = 0x64f98fa7UL;
53 md->sha256.state[7] = 0xbefa4fa4UL;
54 return CRYPT_OK;
55 }
56
57 /**
58 Terminate the hash to get the digest
59 @param md The hash state
60 @param out [out] The destination of the hash (28 bytes)
61 @return CRYPT_OK if successful
62 */
63 int sha224_done(hash_state * md, unsigned char *out)
64 {
65 unsigned char buf[32];
66 int err;
67
68 LTC_ARGCHK(md != NULL);
69 LTC_ARGCHK(out != NULL);
70
71 err = sha256_done(md, buf);
72 XMEMCPY(out, buf, 28);
73 #ifdef LTC_CLEAN_STACK
74 zeromem(buf, sizeof(buf));
75 #endif
76 return err;
77 }
78
79 /**
80 Self-test the hash
81 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
82 */
83 int sha224_test(void)
84 {
85 #ifndef LTC_TEST
86 return CRYPT_NOP;
87 #else
88 static const struct {
89 char *msg;
90 unsigned char hash[28];
91 } tests[] = {
92 { "abc",
93 { 0x23, 0x09, 0x7d, 0x22, 0x34, 0x05, 0xd8,
94 0x22, 0x86, 0x42, 0xa4, 0x77, 0xbd, 0xa2,
95 0x55, 0xb3, 0x2a, 0xad, 0xbc, 0xe4, 0xbd,
96 0xa0, 0xb3, 0xf7, 0xe3, 0x6c, 0x9d, 0xa7 }
97 },
98 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
99 { 0x75, 0x38, 0x8b, 0x16, 0x51, 0x27, 0x76,
100 0xcc, 0x5d, 0xba, 0x5d, 0xa1, 0xfd, 0x89,
101 0x01, 0x50, 0xb0, 0xc6, 0x45, 0x5c, 0xb4,
102 0xf5, 0x8b, 0x19, 0x52, 0x52, 0x25, 0x25 }
103 },
104 };
105
106 int i;
107 unsigned char tmp[28];
108 hash_state md;
109
110 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
111 sha224_init(&md);
112 sha224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
113 sha224_done(&md, tmp);
114 if (XMEMCMP(tmp, tests[i].hash, 28) != 0) {
115 return CRYPT_FAIL_TESTVECTOR;
116 }
117 }
118 return CRYPT_OK;
119 #endif
120 }
121
122
123 /* $Source: /cvs/libtom/libtomcrypt/src/hashes/sha2/sha224.c,v $ */
124 /* $Revision: 1.8 $ */
125 /* $Date: 2006/11/01 09:28:17 $ */