Mercurial > dropbear

annotate sha224.c @ 144:7ed585a2c53b libtomcrypt

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propagate of 3f8f752126017cbe7d93c4086c27a91550df745f and 747ebf284d40a15b338e5a5c7730ecec6eade3d7 from branch 'au.asn.ucc.matt.ltc-orig' to 'au.asn.ucc.matt.ltc-db'
author Matt Johnston <matt@ucc.asn.au>
date Sun, 19 Dec 2004 11:47:33 +0000
parents 5d99163f7e32 b939f2d4431e
children
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11
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12 /* SHA-224 new NIST standard based off of SHA-256 truncated to 224 bits */
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13 const struct _hash_descriptor sha224_desc =
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14 {
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15 "sha224",
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16 10,
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17 28,
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18 64,
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19
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20 /* DER identifier (not supported) */
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21 { 0x00 },
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22 0,
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23
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24 &sha224_init,
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25 &sha256_process,
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26 &sha224_done,
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27 &sha224_test
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28 };
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29
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30 /* init the sha256 er... sha224 state ;-) */
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31 int sha224_init(hash_state * md)
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32 {
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33 _ARGCHK(md != NULL);
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34
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35 md->sha256.curlen = 0;
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36 md->sha256.length = 0;
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37 md->sha256.state[0] = 0xc1059ed8UL;
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38 md->sha256.state[1] = 0x367cd507UL;
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39 md->sha256.state[2] = 0x3070dd17UL;
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40 md->sha256.state[3] = 0xf70e5939UL;
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41 md->sha256.state[4] = 0xffc00b31UL;
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42 md->sha256.state[5] = 0x68581511UL;
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43 md->sha256.state[6] = 0x64f98fa7UL;
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44 md->sha256.state[7] = 0xbefa4fa4UL;
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45 return CRYPT_OK;
20
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46 }
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47
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48 int sha224_done(hash_state * md, unsigned char *hash)
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49 {
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50 unsigned char buf[32];
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51 int err;
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52
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53 err = sha256_done(md, buf);
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54 XMEMCPY(hash, buf, 28);
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55 #ifdef CLEAN_STACK
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56 zeromem(buf, sizeof(buf));
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57 #endif
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58 return err;
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59 }
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60
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61 int sha224_test(void)
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62 {
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63 #ifndef LTC_TEST
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64 return CRYPT_NOP;
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65 #else
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66 static const struct {
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67 char *msg;
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68 unsigned char hash[28];
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69 } tests[] = {
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70 { "abc",
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71 { 0x23, 0x09, 0x7d, 0x22, 0x34, 0x05, 0xd8,
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72 0x22, 0x86, 0x42, 0xa4, 0x77, 0xbd, 0xa2,
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73 0x55, 0xb3, 0x2a, 0xad, 0xbc, 0xe4, 0xbd,
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74 0xa0, 0xb3, 0xf7, 0xe3, 0x6c, 0x9d, 0xa7 }
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75 },
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76 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
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77 { 0x75, 0x38, 0x8b, 0x16, 0x51, 0x27, 0x76,
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78 0xcc, 0x5d, 0xba, 0x5d, 0xa1, 0xfd, 0x89,
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79 0x01, 0x50, 0xb0, 0xc6, 0x45, 0x5c, 0xb4,
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80 0xf5, 0x8b, 0x19, 0x52, 0x52, 0x25, 0x25 }
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81 },
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82 };
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83
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84 int i;
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85 unsigned char tmp[28];
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86 hash_state md;
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87
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88 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
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89 sha224_init(&md);
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90 sha224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
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91 sha224_done(&md, tmp);
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92 if (memcmp(tmp, tests[i].hash, 28) != 0) {
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93 return CRYPT_FAIL_TESTVECTOR;
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94 }
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95 }
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96 return CRYPT_OK;
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97 #endif
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98 }
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99