1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
6 * The library is free for all purposes without any express
11 LTC_SHA-224 new NIST standard based off of LTC_SHA-256 truncated to 224 bits (Tom St Denis)
16 #if defined(LTC_SHA224) && defined(LTC_SHA256)
18 const struct ltc_hash_descriptor sha224_desc =
26 { 2, 16, 840, 1, 101, 3, 4, 2, 4, },
36 /* init the sha256 er... sha224 state ;-) */
38 Initialize the hash state
39 @param md The hash state you wish to initialize
40 @return CRYPT_OK if successful
42 int sha224_init(hash_state * md)
44 LTC_ARGCHK(md != NULL);
46 md->sha256.curlen = 0;
47 md->sha256.length = 0;
48 md->sha256.state[0] = 0xc1059ed8UL;
49 md->sha256.state[1] = 0x367cd507UL;
50 md->sha256.state[2] = 0x3070dd17UL;
51 md->sha256.state[3] = 0xf70e5939UL;
52 md->sha256.state[4] = 0xffc00b31UL;
53 md->sha256.state[5] = 0x68581511UL;
54 md->sha256.state[6] = 0x64f98fa7UL;
55 md->sha256.state[7] = 0xbefa4fa4UL;
60 Terminate the hash to get the digest
61 @param md The hash state
62 @param out [out] The destination of the hash (28 bytes)
63 @return CRYPT_OK if successful
65 int sha224_done(hash_state * md, unsigned char *out)
67 unsigned char buf[32];
70 LTC_ARGCHK(md != NULL);
71 LTC_ARGCHK(out != NULL);
73 err = sha256_done(md, buf);
74 XMEMCPY(out, buf, 28);
75 #ifdef LTC_CLEAN_STACK
76 zeromem(buf, sizeof(buf));
83 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
92 unsigned char hash[28];
95 { 0x23, 0x09, 0x7d, 0x22, 0x34, 0x05, 0xd8,
96 0x22, 0x86, 0x42, 0xa4, 0x77, 0xbd, 0xa2,
97 0x55, 0xb3, 0x2a, 0xad, 0xbc, 0xe4, 0xbd,
98 0xa0, 0xb3, 0xf7, 0xe3, 0x6c, 0x9d, 0xa7 }
100 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
101 { 0x75, 0x38, 0x8b, 0x16, 0x51, 0x27, 0x76,
102 0xcc, 0x5d, 0xba, 0x5d, 0xa1, 0xfd, 0x89,
103 0x01, 0x50, 0xb0, 0xc6, 0x45, 0x5c, 0xb4,
104 0xf5, 0x8b, 0x19, 0x52, 0x52, 0x25, 0x25 }
109 unsigned char tmp[28];
112 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
114 sha224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
115 sha224_done(&md, tmp);
116 if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA224", i)) {
117 return CRYPT_FAIL_TESTVECTOR;
124 #endif /* defined(LTC_SHA224) && defined(LTC_SHA256) */
127 /* ref: $Format:%D$ */
128 /* git commit: $Format:%H$ */
129 /* commit time: $Format:%ai$ */