annotate libtomcrypt/src/hashes/sha2/sha512_224.c @ 1587:b579ec254988

try and improve the odds of useful fuzzer activity
author Matt Johnston <matt@ucc.asn.au>
date Sun, 04 Mar 2018 22:11:23 +0800
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 /**
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10 @param sha512_224.c
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11 SHA512/224 hash included in sha512.c
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12 */
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13
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14 #include "tomcrypt.h"
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15
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16 #if defined(LTC_SHA512_224) && defined(LTC_SHA512)
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17
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18 const struct ltc_hash_descriptor sha512_224_desc =
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19 {
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20 "sha512-224",
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21 15,
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22 28,
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23 128,
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24
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25 /* OID */
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26 { 2, 16, 840, 1, 101, 3, 4, 2, 5, },
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27 9,
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28
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29 &sha512_224_init,
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30 &sha512_process,
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31 &sha512_224_done,
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32 &sha512_224_test,
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33 NULL
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34 };
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35
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36 /**
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37 Initialize the hash state
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38 @param md The hash state you wish to initialize
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39 @return CRYPT_OK if successful
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40 */
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41 int sha512_224_init(hash_state * md)
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42 {
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43 LTC_ARGCHK(md != NULL);
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44
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45 md->sha512.curlen = 0;
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46 md->sha512.length = 0;
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47 md->sha512.state[0] = CONST64(0x8C3D37C819544DA2);
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48 md->sha512.state[1] = CONST64(0x73E1996689DCD4D6);
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49 md->sha512.state[2] = CONST64(0x1DFAB7AE32FF9C82);
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50 md->sha512.state[3] = CONST64(0x679DD514582F9FCF);
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51 md->sha512.state[4] = CONST64(0x0F6D2B697BD44DA8);
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52 md->sha512.state[5] = CONST64(0x77E36F7304C48942);
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53 md->sha512.state[6] = CONST64(0x3F9D85A86A1D36C8);
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54 md->sha512.state[7] = CONST64(0x1112E6AD91D692A1);
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55 return CRYPT_OK;
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56 }
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57
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58 /**
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59 Terminate the hash to get the digest
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60 @param md The hash state
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61 @param out [out] The destination of the hash (48 bytes)
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62 @return CRYPT_OK if successful
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63 */
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64 int sha512_224_done(hash_state * md, unsigned char *out)
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65 {
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66 unsigned char buf[64];
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67
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68 LTC_ARGCHK(md != NULL);
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69 LTC_ARGCHK(out != NULL);
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70
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71 if (md->sha512.curlen >= sizeof(md->sha512.buf)) {
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72 return CRYPT_INVALID_ARG;
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73 }
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74
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75 sha512_done(md, buf);
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76 XMEMCPY(out, buf, 28);
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77 #ifdef LTC_CLEAN_STACK
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78 zeromem(buf, sizeof(buf));
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79 #endif
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80 return CRYPT_OK;
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81 }
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82
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83 /**
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84 Self-test the hash
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85 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
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86 */
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87 int sha512_224_test(void)
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88 {
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89 #ifndef LTC_TEST
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90 return CRYPT_NOP;
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91 #else
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92 static const struct {
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93 const char *msg;
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94 unsigned char hash[28];
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95 } tests[] = {
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96 { "abc",
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97 { 0x46, 0x34, 0x27, 0x0F, 0x70, 0x7B, 0x6A, 0x54,
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98 0xDA, 0xAE, 0x75, 0x30, 0x46, 0x08, 0x42, 0xE2,
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99 0x0E, 0x37, 0xED, 0x26, 0x5C, 0xEE, 0xE9, 0xA4,
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100 0x3E, 0x89, 0x24, 0xAA }
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101 },
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102 { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
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103 { 0x23, 0xFE, 0xC5, 0xBB, 0x94, 0xD6, 0x0B, 0x23,
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104 0x30, 0x81, 0x92, 0x64, 0x0B, 0x0C, 0x45, 0x33,
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105 0x35, 0xD6, 0x64, 0x73, 0x4F, 0xE4, 0x0E, 0x72,
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106 0x68, 0x67, 0x4A, 0xF9 }
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107 },
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108 };
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109
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110 int i;
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111 unsigned char tmp[28];
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112 hash_state md;
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113
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114 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
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115 sha512_224_init(&md);
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116 sha512_224_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg));
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117 sha512_224_done(&md, tmp);
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118 if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA512-224", i)) {
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119 return CRYPT_FAIL_TESTVECTOR;
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120 }
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121 }
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122 return CRYPT_OK;
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123 #endif
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124 }
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125
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126 #endif /* defined(LTC_SHA384) && defined(LTC_SHA512) */
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127
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128 /* ref: $Format:%D$ */
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129 /* git commit: $Format:%H$ */
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130 /* commit time: $Format:%ai$ */