Mercurial > dropbear
annotate sha512.c @ 0:d7da3b1e1540 libtomcrypt
put back the 0.95 makefile which was inadvertently merged over
author | Matt Johnston <matt@ucc.asn.au> |
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date | Mon, 31 May 2004 18:21:40 +0000 |
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children | 6362d3854bb4 |
rev | line source |
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0
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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 /* SHA512 by Tom St Denis */ |
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13 |
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14 #include "mycrypt.h" |
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15 |
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16 #ifdef SHA512 |
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17 |
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18 const struct _hash_descriptor sha512_desc = |
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19 { |
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20 "sha512", |
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21 5, |
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22 64, |
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23 128, |
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24 &sha512_init, |
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25 &sha512_process, |
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26 &sha512_done, |
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27 &sha512_test |
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28 }; |
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29 |
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30 /* the K array */ |
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31 static const ulong64 K[80] = { |
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32 CONST64(0x428a2f98d728ae22), CONST64(0x7137449123ef65cd), |
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33 CONST64(0xb5c0fbcfec4d3b2f), CONST64(0xe9b5dba58189dbbc), |
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34 CONST64(0x3956c25bf348b538), CONST64(0x59f111f1b605d019), |
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35 CONST64(0x923f82a4af194f9b), CONST64(0xab1c5ed5da6d8118), |
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36 CONST64(0xd807aa98a3030242), CONST64(0x12835b0145706fbe), |
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37 CONST64(0x243185be4ee4b28c), CONST64(0x550c7dc3d5ffb4e2), |
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38 CONST64(0x72be5d74f27b896f), CONST64(0x80deb1fe3b1696b1), |
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39 CONST64(0x9bdc06a725c71235), CONST64(0xc19bf174cf692694), |
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40 CONST64(0xe49b69c19ef14ad2), CONST64(0xefbe4786384f25e3), |
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41 CONST64(0x0fc19dc68b8cd5b5), CONST64(0x240ca1cc77ac9c65), |
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42 CONST64(0x2de92c6f592b0275), CONST64(0x4a7484aa6ea6e483), |
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43 CONST64(0x5cb0a9dcbd41fbd4), CONST64(0x76f988da831153b5), |
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44 CONST64(0x983e5152ee66dfab), CONST64(0xa831c66d2db43210), |
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45 CONST64(0xb00327c898fb213f), CONST64(0xbf597fc7beef0ee4), |
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46 CONST64(0xc6e00bf33da88fc2), CONST64(0xd5a79147930aa725), |
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47 CONST64(0x06ca6351e003826f), CONST64(0x142929670a0e6e70), |
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48 CONST64(0x27b70a8546d22ffc), CONST64(0x2e1b21385c26c926), |
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49 CONST64(0x4d2c6dfc5ac42aed), CONST64(0x53380d139d95b3df), |
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50 CONST64(0x650a73548baf63de), CONST64(0x766a0abb3c77b2a8), |
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51 CONST64(0x81c2c92e47edaee6), CONST64(0x92722c851482353b), |
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52 CONST64(0xa2bfe8a14cf10364), CONST64(0xa81a664bbc423001), |
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53 CONST64(0xc24b8b70d0f89791), CONST64(0xc76c51a30654be30), |
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54 CONST64(0xd192e819d6ef5218), CONST64(0xd69906245565a910), |
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55 CONST64(0xf40e35855771202a), CONST64(0x106aa07032bbd1b8), |
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56 CONST64(0x19a4c116b8d2d0c8), CONST64(0x1e376c085141ab53), |
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57 CONST64(0x2748774cdf8eeb99), CONST64(0x34b0bcb5e19b48a8), |
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58 CONST64(0x391c0cb3c5c95a63), CONST64(0x4ed8aa4ae3418acb), |
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59 CONST64(0x5b9cca4f7763e373), CONST64(0x682e6ff3d6b2b8a3), |
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60 CONST64(0x748f82ee5defb2fc), CONST64(0x78a5636f43172f60), |
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61 CONST64(0x84c87814a1f0ab72), CONST64(0x8cc702081a6439ec), |
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62 CONST64(0x90befffa23631e28), CONST64(0xa4506cebde82bde9), |
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63 CONST64(0xbef9a3f7b2c67915), CONST64(0xc67178f2e372532b), |
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64 CONST64(0xca273eceea26619c), CONST64(0xd186b8c721c0c207), |
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65 CONST64(0xeada7dd6cde0eb1e), CONST64(0xf57d4f7fee6ed178), |
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66 CONST64(0x06f067aa72176fba), CONST64(0x0a637dc5a2c898a6), |
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67 CONST64(0x113f9804bef90dae), CONST64(0x1b710b35131c471b), |
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68 CONST64(0x28db77f523047d84), CONST64(0x32caab7b40c72493), |
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69 CONST64(0x3c9ebe0a15c9bebc), CONST64(0x431d67c49c100d4c), |
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70 CONST64(0x4cc5d4becb3e42b6), CONST64(0x597f299cfc657e2a), |
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71 CONST64(0x5fcb6fab3ad6faec), CONST64(0x6c44198c4a475817) |
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72 }; |
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73 |
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74 /* Various logical functions */ |
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75 #define Ch(x,y,z) (z ^ (x & (y ^ z))) |
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76 #define Maj(x,y,z) (((x | y) & z) | (x & y)) |
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77 #define S(x, n) ROR64((x),(n)) |
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78 #define R(x, n) (((x)&CONST64(0xFFFFFFFFFFFFFFFF))>>((ulong64)n)) |
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79 #define Sigma0(x) (S(x, 28) ^ S(x, 34) ^ S(x, 39)) |
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80 #define Sigma1(x) (S(x, 14) ^ S(x, 18) ^ S(x, 41)) |
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81 #define Gamma0(x) (S(x, 1) ^ S(x, 8) ^ R(x, 7)) |
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82 #define Gamma1(x) (S(x, 19) ^ S(x, 61) ^ R(x, 6)) |
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83 |
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84 /* compress 1024-bits */ |
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85 #ifdef CLEAN_STACK |
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86 static void _sha512_compress(hash_state * md, unsigned char *buf) |
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87 #else |
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88 static void sha512_compress(hash_state * md, unsigned char *buf) |
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89 #endif |
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90 { |
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91 ulong64 S[8], W[80], t0, t1; |
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92 int i; |
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93 |
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94 /* copy state into S */ |
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95 for (i = 0; i < 8; i++) { |
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96 S[i] = md->sha512.state[i]; |
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97 } |
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98 |
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99 /* copy the state into 1024-bits into W[0..15] */ |
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100 for (i = 0; i < 16; i++) { |
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101 LOAD64H(W[i], buf + (8*i)); |
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102 } |
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103 |
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104 /* fill W[16..79] */ |
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105 for (i = 16; i < 80; i++) { |
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106 W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) + W[i - 16]; |
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107 } |
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108 |
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109 /* Compress */ |
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110 #ifdef SMALL_CODE |
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111 for (i = 0; i < 80; i++) { |
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112 t0 = S[7] + Sigma1(S[4]) + Ch(S[4], S[5], S[6]) + K[i] + W[i]; |
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113 t1 = Sigma0(S[0]) + Maj(S[0], S[1], S[2]); |
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114 S[7] = S[6]; |
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115 S[6] = S[5]; |
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116 S[5] = S[4]; |
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117 S[4] = S[3] + t0; |
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118 S[3] = S[2]; |
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119 S[2] = S[1]; |
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120 S[1] = S[0]; |
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121 S[0] = t0 + t1; |
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122 } |
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123 #else |
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124 #define RND(a,b,c,d,e,f,g,h,i) \ |
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125 t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i]; \ |
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126 t1 = Sigma0(a) + Maj(a, b, c); \ |
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127 d += t0; \ |
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128 h = t0 + t1; |
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129 |
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130 for (i = 0; i < 80; i += 8) { |
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131 RND(S[0],S[1],S[2],S[3],S[4],S[5],S[6],S[7],i+0); |
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132 RND(S[7],S[0],S[1],S[2],S[3],S[4],S[5],S[6],i+1); |
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133 RND(S[6],S[7],S[0],S[1],S[2],S[3],S[4],S[5],i+2); |
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134 RND(S[5],S[6],S[7],S[0],S[1],S[2],S[3],S[4],i+3); |
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135 RND(S[4],S[5],S[6],S[7],S[0],S[1],S[2],S[3],i+4); |
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136 RND(S[3],S[4],S[5],S[6],S[7],S[0],S[1],S[2],i+5); |
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137 RND(S[2],S[3],S[4],S[5],S[6],S[7],S[0],S[1],i+6); |
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138 RND(S[1],S[2],S[3],S[4],S[5],S[6],S[7],S[0],i+7); |
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139 } |
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140 #endif |
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141 |
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142 |
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143 /* feedback */ |
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144 for (i = 0; i < 8; i++) { |
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145 md->sha512.state[i] = md->sha512.state[i] + S[i]; |
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146 } |
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147 } |
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148 |
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149 /* compress 1024-bits */ |
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150 #ifdef CLEAN_STACK |
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151 static void sha512_compress(hash_state * md, unsigned char *buf) |
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152 { |
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153 _sha512_compress(md, buf); |
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154 burn_stack(sizeof(ulong64) * 90 + sizeof(int)); |
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155 } |
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156 #endif |
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157 |
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158 /* init the sha512 state */ |
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159 void sha512_init(hash_state * md) |
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160 { |
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161 _ARGCHK(md != NULL); |
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162 |
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163 md->sha512.curlen = 0; |
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164 md->sha512.length = 0; |
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165 md->sha512.state[0] = CONST64(0x6a09e667f3bcc908); |
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166 md->sha512.state[1] = CONST64(0xbb67ae8584caa73b); |
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167 md->sha512.state[2] = CONST64(0x3c6ef372fe94f82b); |
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168 md->sha512.state[3] = CONST64(0xa54ff53a5f1d36f1); |
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169 md->sha512.state[4] = CONST64(0x510e527fade682d1); |
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170 md->sha512.state[5] = CONST64(0x9b05688c2b3e6c1f); |
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171 md->sha512.state[6] = CONST64(0x1f83d9abfb41bd6b); |
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172 md->sha512.state[7] = CONST64(0x5be0cd19137e2179); |
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173 } |
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174 |
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175 HASH_PROCESS(sha512_process, sha512_compress, sha512, 128) |
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176 |
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177 int sha512_done(hash_state * md, unsigned char *hash) |
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178 { |
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179 int i; |
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180 |
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181 _ARGCHK(md != NULL); |
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182 _ARGCHK(hash != NULL); |
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183 |
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184 if (md->sha512.curlen >= sizeof(md->sha512.buf)) { |
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185 return CRYPT_INVALID_ARG; |
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186 } |
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187 |
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188 /* increase the length of the message */ |
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189 md->sha512.length += md->sha512.curlen * CONST64(8); |
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190 |
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191 /* append the '1' bit */ |
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192 md->sha512.buf[md->sha512.curlen++] = (unsigned char)0x80; |
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193 |
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194 /* if the length is currently above 112 bytes we append zeros |
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195 * then compress. Then we can fall back to padding zeros and length |
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196 * encoding like normal. |
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197 */ |
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198 if (md->sha512.curlen > 112) { |
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199 while (md->sha512.curlen < 128) { |
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200 md->sha512.buf[md->sha512.curlen++] = (unsigned char)0; |
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201 } |
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202 sha512_compress(md, md->sha512.buf); |
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203 md->sha512.curlen = 0; |
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204 } |
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205 |
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206 /* pad upto 120 bytes of zeroes |
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207 * note: that from 112 to 120 is the 64 MSB of the length. We assume that you won't hash |
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208 * > 2^64 bits of data... :-) |
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209 */ |
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210 while (md->sha512.curlen < 120) { |
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211 md->sha512.buf[md->sha512.curlen++] = (unsigned char)0; |
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212 } |
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213 |
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214 /* store length */ |
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215 STORE64H(md->sha512.length, md->sha512.buf+120); |
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216 sha512_compress(md, md->sha512.buf); |
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217 |
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218 /* copy output */ |
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219 for (i = 0; i < 8; i++) { |
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220 STORE64H(md->sha512.state[i], hash+(8*i)); |
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221 } |
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222 #ifdef CLEAN_STACK |
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223 zeromem(md, sizeof(hash_state)); |
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224 #endif |
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225 return CRYPT_OK; |
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226 } |
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227 |
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228 int sha512_test(void) |
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229 { |
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230 #ifndef LTC_TEST |
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231 return CRYPT_NOP; |
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232 #else |
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233 static const struct { |
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234 char *msg; |
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235 unsigned char hash[64]; |
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236 } tests[] = { |
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237 { "abc", |
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238 { 0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba, |
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239 0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31, |
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240 0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2, |
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241 0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a, |
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242 0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8, |
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243 0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd, |
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244 0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e, |
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245 0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f } |
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246 }, |
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247 { "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu", |
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248 { 0x8e, 0x95, 0x9b, 0x75, 0xda, 0xe3, 0x13, 0xda, |
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249 0x8c, 0xf4, 0xf7, 0x28, 0x14, 0xfc, 0x14, 0x3f, |
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250 0x8f, 0x77, 0x79, 0xc6, 0xeb, 0x9f, 0x7f, 0xa1, |
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251 0x72, 0x99, 0xae, 0xad, 0xb6, 0x88, 0x90, 0x18, |
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252 0x50, 0x1d, 0x28, 0x9e, 0x49, 0x00, 0xf7, 0xe4, |
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253 0x33, 0x1b, 0x99, 0xde, 0xc4, 0xb5, 0x43, 0x3a, |
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254 0xc7, 0xd3, 0x29, 0xee, 0xb6, 0xdd, 0x26, 0x54, |
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255 0x5e, 0x96, 0xe5, 0x5b, 0x87, 0x4b, 0xe9, 0x09 } |
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256 }, |
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257 }; |
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258 |
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259 int i; |
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260 unsigned char tmp[64]; |
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261 hash_state md; |
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262 |
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263 for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) { |
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264 sha512_init(&md); |
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265 sha512_process(&md, (unsigned char *)tests[i].msg, (unsigned long)strlen(tests[i].msg)); |
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266 sha512_done(&md, tmp); |
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267 if (memcmp(tmp, tests[i].hash, 64) != 0) { |
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268 return CRYPT_FAIL_TESTVECTOR; |
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269 } |
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270 } |
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271 return CRYPT_OK; |
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272 #endif |
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273 } |
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274 |
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275 #ifdef SHA384 |
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276 #include "sha384.c" |
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277 #endif |
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278 |
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279 #endif |
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280 |
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281 |
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282 |