Mercurial > dropbear
annotate libtomcrypt/src/hashes/sha1.c @ 1746:28ab2cdb84bf
Fix fuzzer build
author | Matt Johnston <matt@ucc.asn.au> |
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date | Sun, 18 Oct 2020 23:32:39 +0800 |
parents | 6dba84798cd5 |
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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 #include "tomcrypt.h" |
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10 |
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11 /** |
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12 @file sha1.c |
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13 LTC_SHA1 code by Tom St Denis |
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14 */ |
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15 |
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16 |
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17 #ifdef LTC_SHA1 |
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18 |
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19 const struct ltc_hash_descriptor sha1_desc = |
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20 { |
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21 "sha1", |
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22 2, |
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23 20, |
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24 64, |
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25 |
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26 /* OID */ |
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27 { 1, 3, 14, 3, 2, 26, }, |
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28 6, |
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29 |
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30 &sha1_init, |
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31 &sha1_process, |
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32 &sha1_done, |
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33 &sha1_test, |
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34 NULL |
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35 }; |
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36 |
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37 #define F0(x,y,z) (z ^ (x & (y ^ z))) |
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38 #define F1(x,y,z) (x ^ y ^ z) |
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39 #define F2(x,y,z) ((x & y) | (z & (x | y))) |
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40 #define F3(x,y,z) (x ^ y ^ z) |
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41 |
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42 #ifdef LTC_CLEAN_STACK |
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43 static int _sha1_compress(hash_state *md, unsigned char *buf) |
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44 #else |
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45 static int sha1_compress(hash_state *md, unsigned char *buf) |
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46 #endif |
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47 { |
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48 ulong32 a,b,c,d,e,W[80],i; |
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49 #ifdef LTC_SMALL_CODE |
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50 ulong32 t; |
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51 #endif |
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52 |
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53 /* copy the state into 512-bits into W[0..15] */ |
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54 for (i = 0; i < 16; i++) { |
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55 LOAD32H(W[i], buf + (4*i)); |
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56 } |
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57 |
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58 /* copy state */ |
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59 a = md->sha1.state[0]; |
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60 b = md->sha1.state[1]; |
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61 c = md->sha1.state[2]; |
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62 d = md->sha1.state[3]; |
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63 e = md->sha1.state[4]; |
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64 |
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65 /* expand it */ |
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66 for (i = 16; i < 80; i++) { |
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67 W[i] = ROL(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1); |
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68 } |
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69 |
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70 /* compress */ |
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71 /* round one */ |
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72 #define FF0(a,b,c,d,e,i) e = (ROLc(a, 5) + F0(b,c,d) + e + W[i] + 0x5a827999UL); b = ROLc(b, 30); |
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73 #define FF1(a,b,c,d,e,i) e = (ROLc(a, 5) + F1(b,c,d) + e + W[i] + 0x6ed9eba1UL); b = ROLc(b, 30); |
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74 #define FF2(a,b,c,d,e,i) e = (ROLc(a, 5) + F2(b,c,d) + e + W[i] + 0x8f1bbcdcUL); b = ROLc(b, 30); |
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75 #define FF3(a,b,c,d,e,i) e = (ROLc(a, 5) + F3(b,c,d) + e + W[i] + 0xca62c1d6UL); b = ROLc(b, 30); |
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76 |
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77 #ifdef LTC_SMALL_CODE |
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78 |
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79 for (i = 0; i < 20; ) { |
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80 FF0(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t; |
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81 } |
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82 |
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83 for (; i < 40; ) { |
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84 FF1(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t; |
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85 } |
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86 |
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87 for (; i < 60; ) { |
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88 FF2(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t; |
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89 } |
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90 |
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91 for (; i < 80; ) { |
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92 FF3(a,b,c,d,e,i++); t = e; e = d; d = c; c = b; b = a; a = t; |
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93 } |
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94 |
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95 #else |
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96 |
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97 for (i = 0; i < 20; ) { |
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98 FF0(a,b,c,d,e,i++); |
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99 FF0(e,a,b,c,d,i++); |
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100 FF0(d,e,a,b,c,i++); |
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101 FF0(c,d,e,a,b,i++); |
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102 FF0(b,c,d,e,a,i++); |
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103 } |
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104 |
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105 /* round two */ |
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106 for (; i < 40; ) { |
285
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107 FF1(a,b,c,d,e,i++); |
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108 FF1(e,a,b,c,d,i++); |
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109 FF1(d,e,a,b,c,i++); |
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110 FF1(c,d,e,a,b,i++); |
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111 FF1(b,c,d,e,a,i++); |
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112 } |
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113 |
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114 /* round three */ |
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115 for (; i < 60; ) { |
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116 FF2(a,b,c,d,e,i++); |
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117 FF2(e,a,b,c,d,i++); |
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118 FF2(d,e,a,b,c,i++); |
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119 FF2(c,d,e,a,b,i++); |
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120 FF2(b,c,d,e,a,i++); |
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121 } |
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122 |
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123 /* round four */ |
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124 for (; i < 80; ) { |
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125 FF3(a,b,c,d,e,i++); |
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126 FF3(e,a,b,c,d,i++); |
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127 FF3(d,e,a,b,c,i++); |
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128 FF3(c,d,e,a,b,i++); |
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129 FF3(b,c,d,e,a,i++); |
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130 } |
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131 #endif |
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132 |
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133 #undef FF0 |
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134 #undef FF1 |
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135 #undef FF2 |
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136 #undef FF3 |
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137 |
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138 /* store */ |
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139 md->sha1.state[0] = md->sha1.state[0] + a; |
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140 md->sha1.state[1] = md->sha1.state[1] + b; |
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141 md->sha1.state[2] = md->sha1.state[2] + c; |
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142 md->sha1.state[3] = md->sha1.state[3] + d; |
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143 md->sha1.state[4] = md->sha1.state[4] + e; |
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144 |
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145 return CRYPT_OK; |
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146 } |
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147 |
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148 #ifdef LTC_CLEAN_STACK |
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149 static int sha1_compress(hash_state *md, unsigned char *buf) |
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150 { |
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151 int err; |
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152 err = _sha1_compress(md, buf); |
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153 burn_stack(sizeof(ulong32) * 87); |
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154 return err; |
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155 } |
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156 #endif |
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157 |
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158 /** |
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159 Initialize the hash state |
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160 @param md The hash state you wish to initialize |
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161 @return CRYPT_OK if successful |
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162 */ |
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163 int sha1_init(hash_state * md) |
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164 { |
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165 LTC_ARGCHK(md != NULL); |
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166 md->sha1.state[0] = 0x67452301UL; |
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167 md->sha1.state[1] = 0xefcdab89UL; |
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168 md->sha1.state[2] = 0x98badcfeUL; |
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169 md->sha1.state[3] = 0x10325476UL; |
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170 md->sha1.state[4] = 0xc3d2e1f0UL; |
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171 md->sha1.curlen = 0; |
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172 md->sha1.length = 0; |
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173 return CRYPT_OK; |
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174 } |
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175 |
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176 /** |
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177 Process a block of memory though the hash |
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178 @param md The hash state |
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179 @param in The data to hash |
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180 @param inlen The length of the data (octets) |
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181 @return CRYPT_OK if successful |
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182 */ |
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183 HASH_PROCESS(sha1_process, sha1_compress, sha1, 64) |
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184 |
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185 /** |
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186 Terminate the hash to get the digest |
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187 @param md The hash state |
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188 @param out [out] The destination of the hash (20 bytes) |
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189 @return CRYPT_OK if successful |
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190 */ |
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191 int sha1_done(hash_state * md, unsigned char *out) |
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192 { |
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193 int i; |
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194 |
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195 LTC_ARGCHK(md != NULL); |
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196 LTC_ARGCHK(out != NULL); |
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197 |
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198 if (md->sha1.curlen >= sizeof(md->sha1.buf)) { |
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199 return CRYPT_INVALID_ARG; |
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200 } |
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201 |
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202 /* increase the length of the message */ |
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203 md->sha1.length += md->sha1.curlen * 8; |
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204 |
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205 /* append the '1' bit */ |
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206 md->sha1.buf[md->sha1.curlen++] = (unsigned char)0x80; |
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207 |
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208 /* if the length is currently above 56 bytes we append zeros |
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209 * then compress. Then we can fall back to padding zeros and length |
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210 * encoding like normal. |
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211 */ |
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212 if (md->sha1.curlen > 56) { |
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213 while (md->sha1.curlen < 64) { |
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214 md->sha1.buf[md->sha1.curlen++] = (unsigned char)0; |
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215 } |
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216 sha1_compress(md, md->sha1.buf); |
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217 md->sha1.curlen = 0; |
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218 } |
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219 |
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220 /* pad upto 56 bytes of zeroes */ |
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221 while (md->sha1.curlen < 56) { |
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222 md->sha1.buf[md->sha1.curlen++] = (unsigned char)0; |
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223 } |
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224 |
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225 /* store length */ |
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226 STORE64H(md->sha1.length, md->sha1.buf+56); |
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227 sha1_compress(md, md->sha1.buf); |
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228 |
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229 /* copy output */ |
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230 for (i = 0; i < 5; i++) { |
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231 STORE32H(md->sha1.state[i], out+(4*i)); |
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232 } |
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233 #ifdef LTC_CLEAN_STACK |
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234 zeromem(md, sizeof(hash_state)); |
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235 #endif |
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236 return CRYPT_OK; |
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237 } |
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238 |
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239 /** |
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240 Self-test the hash |
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241 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled |
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242 */ |
285
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243 int sha1_test(void) |
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244 { |
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245 #ifndef LTC_TEST |
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246 return CRYPT_NOP; |
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247 #else |
285
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248 static const struct { |
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249 const char *msg; |
285
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250 unsigned char hash[20]; |
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251 } tests[] = { |
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252 { "abc", |
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253 { 0xa9, 0x99, 0x3e, 0x36, 0x47, 0x06, 0x81, 0x6a, |
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254 0xba, 0x3e, 0x25, 0x71, 0x78, 0x50, 0xc2, 0x6c, |
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255 0x9c, 0xd0, 0xd8, 0x9d } |
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256 }, |
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257 { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
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258 { 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, |
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259 0xBA, 0xAE, 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, |
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260 0xE5, 0x46, 0x70, 0xF1 } |
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261 } |
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262 }; |
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263 |
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264 int i; |
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265 unsigned char tmp[20]; |
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266 hash_state md; |
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267 |
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268 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) { |
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269 sha1_init(&md); |
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270 sha1_process(&md, (unsigned char*)tests[i].msg, (unsigned long)strlen(tests[i].msg)); |
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271 sha1_done(&md, tmp); |
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272 if (compare_testvector(tmp, sizeof(tmp), tests[i].hash, sizeof(tests[i].hash), "SHA1", i)) { |
285
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273 return CRYPT_FAIL_TESTVECTOR; |
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274 } |
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275 } |
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276 return CRYPT_OK; |
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277 #endif |
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278 } |
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279 |
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280 #endif |
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281 |
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282 |
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283 |
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284 /* ref: $Format:%D$ */ |
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285 /* git commit: $Format:%H$ */ |
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286 /* commit time: $Format:%ai$ */ |