OpenWrt – Blame information for rev 4
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Rev | Author | Line No. | Line |
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4 | office | 1 | /* |
2 | * FIPS-180-1 compliant SHA-1 implementation |
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3 | * |
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4 | * Copyright (C) 2003-2006 Christophe Devine |
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5 | * |
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6 | * This library is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License, version 2.1 as published by the Free Software Foundation. |
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9 | * |
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10 | * This library is distributed in the hope that it will be useful, |
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 | * Lesser General Public License for more details. |
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14 | * |
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15 | * You should have received a copy of the GNU Lesser General Public |
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16 | * License along with this library; if not, write to the Free Software |
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17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
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18 | * MA 02110-1301 USA |
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19 | */ |
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20 | /* |
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21 | * The SHA-1 standard was published by NIST in 1993. |
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22 | * |
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23 | * http://www.itl.nist.gov/fipspubs/fip180-1.htm |
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24 | */ |
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25 | |||
26 | #ifndef _CRT_SECURE_NO_DEPRECATE |
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27 | #define _CRT_SECURE_NO_DEPRECATE 1 |
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28 | #endif |
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29 | |||
30 | #include <string.h> |
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31 | #include <stdio.h> |
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32 | |||
33 | #include "sha1.h" |
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34 | |||
35 | /* |
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36 | * 32-bit integer manipulation macros (big endian) |
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37 | */ |
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38 | #ifndef GET_UINT32_BE |
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39 | #define GET_UINT32_BE(n,b,i) \ |
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40 | { \ |
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41 | (n) = ( (ulong) (b)[(i) ] << 24 ) \ |
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42 | | ( (ulong) (b)[(i) + 1] << 16 ) \ |
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43 | | ( (ulong) (b)[(i) + 2] << 8 ) \ |
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44 | | ( (ulong) (b)[(i) + 3] ); \ |
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45 | } |
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46 | #endif |
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47 | #ifndef PUT_UINT32_BE |
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48 | #define PUT_UINT32_BE(n,b,i) \ |
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49 | { \ |
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50 | (b)[(i) ] = (uchar) ( (n) >> 24 ); \ |
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51 | (b)[(i) + 1] = (uchar) ( (n) >> 16 ); \ |
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52 | (b)[(i) + 2] = (uchar) ( (n) >> 8 ); \ |
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53 | (b)[(i) + 3] = (uchar) ( (n) ); \ |
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54 | } |
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55 | #endif |
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56 | |||
57 | /* |
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58 | * Core SHA-1 functions |
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59 | */ |
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60 | void sha1_starts( sha1_context *ctx ) |
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61 | { |
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62 | ctx->total[0] = 0; |
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63 | ctx->total[1] = 0; |
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64 | |||
65 | ctx->state[0] = 0x67452301; |
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66 | ctx->state[1] = 0xEFCDAB89; |
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67 | ctx->state[2] = 0x98BADCFE; |
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68 | ctx->state[3] = 0x10325476; |
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69 | ctx->state[4] = 0xC3D2E1F0; |
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70 | } |
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71 | |||
72 | void sha1_process( sha1_context *ctx, uchar data[64] ) |
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73 | { |
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74 | ulong temp, W[16], A, B, C, D, E; |
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75 | |||
76 | GET_UINT32_BE( W[0], data, 0 ); |
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77 | GET_UINT32_BE( W[1], data, 4 ); |
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78 | GET_UINT32_BE( W[2], data, 8 ); |
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79 | GET_UINT32_BE( W[3], data, 12 ); |
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80 | GET_UINT32_BE( W[4], data, 16 ); |
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81 | GET_UINT32_BE( W[5], data, 20 ); |
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82 | GET_UINT32_BE( W[6], data, 24 ); |
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83 | GET_UINT32_BE( W[7], data, 28 ); |
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84 | GET_UINT32_BE( W[8], data, 32 ); |
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85 | GET_UINT32_BE( W[9], data, 36 ); |
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86 | GET_UINT32_BE( W[10], data, 40 ); |
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87 | GET_UINT32_BE( W[11], data, 44 ); |
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88 | GET_UINT32_BE( W[12], data, 48 ); |
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89 | GET_UINT32_BE( W[13], data, 52 ); |
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90 | GET_UINT32_BE( W[14], data, 56 ); |
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91 | GET_UINT32_BE( W[15], data, 60 ); |
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92 | |||
93 | #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n))) |
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94 | |||
95 | #define R(t) \ |
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96 | ( \ |
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97 | temp = W[(t - 3) & 0x0F] ^ W[(t - 8) & 0x0F] ^ \ |
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98 | W[(t - 14) & 0x0F] ^ W[ t & 0x0F], \ |
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99 | ( W[t & 0x0F] = S(temp,1) ) \ |
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100 | ) |
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101 | |||
102 | #define P(a,b,c,d,e,x) \ |
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103 | { \ |
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104 | e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \ |
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105 | } |
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106 | |||
107 | A = ctx->state[0]; |
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108 | B = ctx->state[1]; |
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109 | C = ctx->state[2]; |
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110 | D = ctx->state[3]; |
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111 | E = ctx->state[4]; |
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112 | |||
113 | #define F(x,y,z) (z ^ (x & (y ^ z))) |
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114 | #define K 0x5A827999 |
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115 | |||
116 | P( A, B, C, D, E, W[0] ); |
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117 | P( E, A, B, C, D, W[1] ); |
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118 | P( D, E, A, B, C, W[2] ); |
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119 | P( C, D, E, A, B, W[3] ); |
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120 | P( B, C, D, E, A, W[4] ); |
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121 | P( A, B, C, D, E, W[5] ); |
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122 | P( E, A, B, C, D, W[6] ); |
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123 | P( D, E, A, B, C, W[7] ); |
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124 | P( C, D, E, A, B, W[8] ); |
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125 | P( B, C, D, E, A, W[9] ); |
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126 | P( A, B, C, D, E, W[10] ); |
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127 | P( E, A, B, C, D, W[11] ); |
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128 | P( D, E, A, B, C, W[12] ); |
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129 | P( C, D, E, A, B, W[13] ); |
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130 | P( B, C, D, E, A, W[14] ); |
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131 | P( A, B, C, D, E, W[15] ); |
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132 | P( E, A, B, C, D, R(16) ); |
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133 | P( D, E, A, B, C, R(17) ); |
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134 | P( C, D, E, A, B, R(18) ); |
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135 | P( B, C, D, E, A, R(19) ); |
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136 | |||
137 | #undef K |
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138 | #undef F |
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139 | |||
140 | #define F(x,y,z) (x ^ y ^ z) |
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141 | #define K 0x6ED9EBA1 |
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142 | |||
143 | P( A, B, C, D, E, R(20) ); |
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144 | P( E, A, B, C, D, R(21) ); |
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145 | P( D, E, A, B, C, R(22) ); |
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146 | P( C, D, E, A, B, R(23) ); |
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147 | P( B, C, D, E, A, R(24) ); |
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148 | P( A, B, C, D, E, R(25) ); |
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149 | P( E, A, B, C, D, R(26) ); |
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150 | P( D, E, A, B, C, R(27) ); |
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151 | P( C, D, E, A, B, R(28) ); |
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152 | P( B, C, D, E, A, R(29) ); |
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153 | P( A, B, C, D, E, R(30) ); |
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154 | P( E, A, B, C, D, R(31) ); |
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155 | P( D, E, A, B, C, R(32) ); |
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156 | P( C, D, E, A, B, R(33) ); |
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157 | P( B, C, D, E, A, R(34) ); |
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158 | P( A, B, C, D, E, R(35) ); |
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159 | P( E, A, B, C, D, R(36) ); |
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160 | P( D, E, A, B, C, R(37) ); |
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161 | P( C, D, E, A, B, R(38) ); |
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162 | P( B, C, D, E, A, R(39) ); |
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163 | |||
164 | #undef K |
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165 | #undef F |
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166 | |||
167 | #define F(x,y,z) ((x & y) | (z & (x | y))) |
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168 | #define K 0x8F1BBCDC |
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169 | |||
170 | P( A, B, C, D, E, R(40) ); |
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171 | P( E, A, B, C, D, R(41) ); |
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172 | P( D, E, A, B, C, R(42) ); |
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173 | P( C, D, E, A, B, R(43) ); |
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174 | P( B, C, D, E, A, R(44) ); |
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175 | P( A, B, C, D, E, R(45) ); |
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176 | P( E, A, B, C, D, R(46) ); |
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177 | P( D, E, A, B, C, R(47) ); |
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178 | P( C, D, E, A, B, R(48) ); |
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179 | P( B, C, D, E, A, R(49) ); |
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180 | P( A, B, C, D, E, R(50) ); |
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181 | P( E, A, B, C, D, R(51) ); |
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182 | P( D, E, A, B, C, R(52) ); |
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183 | P( C, D, E, A, B, R(53) ); |
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184 | P( B, C, D, E, A, R(54) ); |
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185 | P( A, B, C, D, E, R(55) ); |
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186 | P( E, A, B, C, D, R(56) ); |
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187 | P( D, E, A, B, C, R(57) ); |
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188 | P( C, D, E, A, B, R(58) ); |
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189 | P( B, C, D, E, A, R(59) ); |
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190 | |||
191 | #undef K |
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192 | #undef F |
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193 | |||
194 | #define F(x,y,z) (x ^ y ^ z) |
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195 | #define K 0xCA62C1D6 |
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196 | |||
197 | P( A, B, C, D, E, R(60) ); |
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198 | P( E, A, B, C, D, R(61) ); |
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199 | P( D, E, A, B, C, R(62) ); |
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200 | P( C, D, E, A, B, R(63) ); |
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201 | P( B, C, D, E, A, R(64) ); |
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202 | P( A, B, C, D, E, R(65) ); |
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203 | P( E, A, B, C, D, R(66) ); |
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204 | P( D, E, A, B, C, R(67) ); |
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205 | P( C, D, E, A, B, R(68) ); |
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206 | P( B, C, D, E, A, R(69) ); |
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207 | P( A, B, C, D, E, R(70) ); |
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208 | P( E, A, B, C, D, R(71) ); |
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209 | P( D, E, A, B, C, R(72) ); |
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210 | P( C, D, E, A, B, R(73) ); |
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211 | P( B, C, D, E, A, R(74) ); |
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212 | P( A, B, C, D, E, R(75) ); |
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213 | P( E, A, B, C, D, R(76) ); |
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214 | P( D, E, A, B, C, R(77) ); |
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215 | P( C, D, E, A, B, R(78) ); |
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216 | P( B, C, D, E, A, R(79) ); |
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217 | |||
218 | #undef K |
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219 | #undef F |
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220 | |||
221 | ctx->state[0] += A; |
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222 | ctx->state[1] += B; |
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223 | ctx->state[2] += C; |
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224 | ctx->state[3] += D; |
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225 | ctx->state[4] += E; |
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226 | } |
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227 | |||
228 | void sha1_update( sha1_context *ctx, uchar *input, uint length ) |
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229 | { |
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230 | ulong left, fill; |
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231 | |||
232 | if( ! length ) return; |
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233 | |||
234 | left = ctx->total[0] & 0x3F; |
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235 | fill = 64 - left; |
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236 | |||
237 | ctx->total[0] += length; |
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238 | ctx->total[0] &= 0xFFFFFFFF; |
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239 | |||
240 | if( ctx->total[0] < length ) |
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241 | ctx->total[1]++; |
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242 | |||
243 | if( left && length >= fill ) |
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244 | { |
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245 | memcpy( (void *) (ctx->buffer + left), |
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246 | (void *) input, fill ); |
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247 | sha1_process( ctx, ctx->buffer ); |
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248 | length -= fill; |
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249 | input += fill; |
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250 | left = 0; |
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251 | } |
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252 | |||
253 | while( length >= 64 ) |
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254 | { |
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255 | sha1_process( ctx, input ); |
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256 | length -= 64; |
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257 | input += 64; |
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258 | } |
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259 | |||
260 | if( length ) |
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261 | { |
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262 | memcpy( (void *) (ctx->buffer + left), |
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263 | (void *) input, length ); |
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264 | } |
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265 | } |
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266 | |||
267 | static uchar sha1_padding[64] = |
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268 | { |
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269 | 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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270 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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271 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
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272 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
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273 | }; |
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274 | |||
275 | void sha1_finish( sha1_context *ctx, uchar digest[20] ) |
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276 | { |
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277 | ulong last, padn; |
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278 | ulong high, low; |
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279 | uchar msglen[8]; |
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280 | |||
281 | high = ( ctx->total[0] >> 29 ) |
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282 | | ( ctx->total[1] << 3 ); |
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283 | low = ( ctx->total[0] << 3 ); |
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284 | |||
285 | PUT_UINT32_BE( high, msglen, 0 ); |
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286 | PUT_UINT32_BE( low, msglen, 4 ); |
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287 | |||
288 | last = ctx->total[0] & 0x3F; |
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289 | padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); |
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290 | |||
291 | sha1_update( ctx, sha1_padding, padn ); |
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292 | sha1_update( ctx, msglen, 8 ); |
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293 | |||
294 | PUT_UINT32_BE( ctx->state[0], digest, 0 ); |
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295 | PUT_UINT32_BE( ctx->state[1], digest, 4 ); |
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296 | PUT_UINT32_BE( ctx->state[2], digest, 8 ); |
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297 | PUT_UINT32_BE( ctx->state[3], digest, 12 ); |
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298 | PUT_UINT32_BE( ctx->state[4], digest, 16 ); |
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299 | } |
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300 | |||
301 | /* |
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302 | * Output SHA-1(file contents), returns 0 if successful. |
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303 | */ |
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304 | int sha1_file( char *filename, uchar digest[20] ) |
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305 | { |
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306 | FILE *f; |
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307 | size_t n; |
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308 | sha1_context ctx; |
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309 | uchar buf[1024]; |
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310 | |||
311 | if( ( f = fopen( filename, "rb" ) ) == NULL ) |
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312 | return( 1 ); |
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313 | |||
314 | sha1_starts( &ctx ); |
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315 | |||
316 | while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 ) |
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317 | sha1_update( &ctx, buf, (uint) n ); |
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318 | |||
319 | sha1_finish( &ctx, digest ); |
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320 | |||
321 | fclose( f ); |
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322 | return( 0 ); |
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323 | } |
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324 | |||
325 | /* |
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326 | * Output SHA-1(buf) |
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327 | */ |
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328 | void sha1_csum( uchar *buf, uint buflen, uchar digest[20] ) |
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329 | { |
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330 | sha1_context ctx; |
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331 | |||
332 | sha1_starts( &ctx ); |
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333 | sha1_update( &ctx, buf, buflen ); |
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334 | sha1_finish( &ctx, digest ); |
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335 | } |
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336 | |||
337 | /* |
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338 | * Output HMAC-SHA-1(key,buf) |
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339 | */ |
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340 | void sha1_hmac( uchar *key, uint keylen, uchar *buf, uint buflen, |
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341 | uchar digest[20] ) |
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342 | { |
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343 | uint i; |
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344 | sha1_context ctx; |
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345 | uchar k_ipad[64]; |
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346 | uchar k_opad[64]; |
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347 | uchar tmpbuf[20]; |
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348 | |||
349 | memset( k_ipad, 0x36, 64 ); |
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350 | memset( k_opad, 0x5C, 64 ); |
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351 | |||
352 | for( i = 0; i < keylen; i++ ) |
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353 | { |
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354 | if( i >= 64 ) break; |
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355 | |||
356 | k_ipad[i] ^= key[i]; |
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357 | k_opad[i] ^= key[i]; |
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358 | } |
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359 | |||
360 | sha1_starts( &ctx ); |
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361 | sha1_update( &ctx, k_ipad, 64 ); |
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362 | sha1_update( &ctx, buf, buflen ); |
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363 | sha1_finish( &ctx, tmpbuf ); |
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364 | |||
365 | sha1_starts( &ctx ); |
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366 | sha1_update( &ctx, k_opad, 64 ); |
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367 | sha1_update( &ctx, tmpbuf, 20 ); |
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368 | sha1_finish( &ctx, digest ); |
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369 | |||
370 | memset( k_ipad, 0, 64 ); |
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371 | memset( k_opad, 0, 64 ); |
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372 | memset( tmpbuf, 0, 20 ); |
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373 | memset( &ctx, 0, sizeof( sha1_context ) ); |
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374 | } |
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375 | |||
376 | #ifdef SELF_TEST |
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377 | /* |
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378 | * FIPS-180-1 test vectors |
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379 | */ |
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380 | static char *sha1_test_str[3] = |
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381 | { |
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382 | "abc", |
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383 | "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", |
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384 | NULL |
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385 | }; |
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386 | |||
387 | static uchar sha1_test_sum[3][20] = |
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388 | { |
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389 | { 0xA9, 0x99, 0x3E, 0x36, 0x47, 0x06, 0x81, 0x6A, 0xBA, 0x3E, |
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390 | 0x25, 0x71, 0x78, 0x50, 0xC2, 0x6C, 0x9C, 0xD0, 0xD8, 0x9D }, |
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391 | { 0x84, 0x98, 0x3E, 0x44, 0x1C, 0x3B, 0xD2, 0x6E, 0xBA, 0xAE, |
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392 | 0x4A, 0xA1, 0xF9, 0x51, 0x29, 0xE5, 0xE5, 0x46, 0x70, 0xF1 }, |
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393 | { 0x34, 0xAA, 0x97, 0x3C, 0xD4, 0xC4, 0xDA, 0xA4, 0xF6, 0x1E, |
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394 | 0xEB, 0x2B, 0xDB, 0xAD, 0x27, 0x31, 0x65, 0x34, 0x01, 0x6F } |
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395 | }; |
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396 | |||
397 | /* |
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398 | * Checkup routine |
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399 | */ |
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400 | int sha1_self_test( void ) |
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401 | { |
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402 | int i, j; |
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403 | uchar buf[1000]; |
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404 | uchar sha1sum[20]; |
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405 | sha1_context ctx; |
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406 | |||
407 | for( i = 0; i < 3; i++ ) |
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408 | { |
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409 | printf( " SHA-1 test #%d: ", i + 1 ); |
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410 | |||
411 | sha1_starts( &ctx ); |
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412 | |||
413 | if( i < 2 ) |
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414 | sha1_update( &ctx, (uchar *) sha1_test_str[i], |
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415 | strlen( sha1_test_str[i] ) ); |
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416 | else |
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417 | { |
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418 | memset( buf, 'a', 1000 ); |
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419 | for( j = 0; j < 1000; j++ ) |
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420 | sha1_update( &ctx, (uchar *) buf, 1000 ); |
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421 | } |
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422 | |||
423 | sha1_finish( &ctx, sha1sum ); |
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424 | |||
425 | if( memcmp( sha1sum, sha1_test_sum[i], 20 ) != 0 ) |
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426 | { |
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427 | printf( "failed\n" ); |
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428 | return( 1 ); |
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429 | } |
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430 | |||
431 | printf( "passed\n" ); |
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432 | } |
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433 | |||
434 | printf( "\n" ); |
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435 | return( 0 ); |
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436 | } |
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437 | #else |
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438 | int sha1_self_test( void ) |
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439 | { |
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440 | printf( "SHA-1 self-test not available\n\n" ); |
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441 | return( 1 ); |
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442 | } |
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443 | #endif |