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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 /* Implementation of RIPEMD-128 based on the source by Antoon Bosselaers, ESAT-COSIC |
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13 * |
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14 * This source has been radically overhauled to be portable and work within |
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15 * the LibTomCrypt API by Tom St Denis |
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16 */ |
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17 #include "mycrypt.h" |
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18 |
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19 #ifdef RIPEMD128 |
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20 |
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21 const struct _hash_descriptor rmd128_desc = |
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22 { |
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23 "rmd128", |
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24 8, |
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25 16, |
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26 64, |
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15
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27 |
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28 /* DER identifier (not supported) */ |
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29 { 0x00 }, |
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30 0, |
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31 |
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32 &rmd128_init, |
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33 &rmd128_process, |
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34 &rmd128_done, |
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35 &rmd128_test |
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36 }; |
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37 |
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38 /* the four basic functions F(), G() and H() */ |
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39 #define F(x, y, z) ((x) ^ (y) ^ (z)) |
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40 #define G(x, y, z) (((x) & (y)) | (~(x) & (z))) |
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41 #define H(x, y, z) (((x) | ~(y)) ^ (z)) |
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42 #define I(x, y, z) (((x) & (z)) | ((y) & ~(z))) |
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43 |
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44 /* the eight basic operations FF() through III() */ |
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45 #define FF(a, b, c, d, x, s) \ |
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46 (a) += F((b), (c), (d)) + (x);\ |
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47 (a) = ROL((a), (s)); |
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48 |
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49 #define GG(a, b, c, d, x, s) \ |
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50 (a) += G((b), (c), (d)) + (x) + 0x5a827999UL;\ |
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51 (a) = ROL((a), (s)); |
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52 |
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53 #define HH(a, b, c, d, x, s) \ |
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54 (a) += H((b), (c), (d)) + (x) + 0x6ed9eba1UL;\ |
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55 (a) = ROL((a), (s)); |
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56 |
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57 #define II(a, b, c, d, x, s) \ |
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58 (a) += I((b), (c), (d)) + (x) + 0x8f1bbcdcUL;\ |
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59 (a) = ROL((a), (s)); |
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60 |
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61 #define FFF(a, b, c, d, x, s) \ |
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62 (a) += F((b), (c), (d)) + (x);\ |
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63 (a) = ROL((a), (s)); |
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64 |
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65 #define GGG(a, b, c, d, x, s) \ |
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66 (a) += G((b), (c), (d)) + (x) + 0x6d703ef3UL;\ |
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67 (a) = ROL((a), (s)); |
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68 |
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69 #define HHH(a, b, c, d, x, s) \ |
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70 (a) += H((b), (c), (d)) + (x) + 0x5c4dd124UL;\ |
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71 (a) = ROL((a), (s)); |
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72 |
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73 #define III(a, b, c, d, x, s) \ |
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74 (a) += I((b), (c), (d)) + (x) + 0x50a28be6UL;\ |
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75 (a) = ROL((a), (s)); |
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76 |
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77 #ifdef CLEAN_STACK |
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78 static void _rmd128_compress(hash_state *md, unsigned char *buf) |
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79 #else |
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80 static void rmd128_compress(hash_state *md, unsigned char *buf) |
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81 #endif |
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82 { |
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83 ulong32 aa,bb,cc,dd,aaa,bbb,ccc,ddd,X[16]; |
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84 int i; |
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85 |
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86 /* load words X */ |
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87 for (i = 0; i < 16; i++){ |
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88 LOAD32L(X[i], buf + (4 * i)); |
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89 } |
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90 |
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91 /* load state */ |
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92 aa = aaa = md->rmd128.state[0]; |
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93 bb = bbb = md->rmd128.state[1]; |
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94 cc = ccc = md->rmd128.state[2]; |
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95 dd = ddd = md->rmd128.state[3]; |
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96 |
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97 /* round 1 */ |
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98 FF(aa, bb, cc, dd, X[ 0], 11); |
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99 FF(dd, aa, bb, cc, X[ 1], 14); |
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100 FF(cc, dd, aa, bb, X[ 2], 15); |
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101 FF(bb, cc, dd, aa, X[ 3], 12); |
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102 FF(aa, bb, cc, dd, X[ 4], 5); |
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103 FF(dd, aa, bb, cc, X[ 5], 8); |
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104 FF(cc, dd, aa, bb, X[ 6], 7); |
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105 FF(bb, cc, dd, aa, X[ 7], 9); |
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106 FF(aa, bb, cc, dd, X[ 8], 11); |
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107 FF(dd, aa, bb, cc, X[ 9], 13); |
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108 FF(cc, dd, aa, bb, X[10], 14); |
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109 FF(bb, cc, dd, aa, X[11], 15); |
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110 FF(aa, bb, cc, dd, X[12], 6); |
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111 FF(dd, aa, bb, cc, X[13], 7); |
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112 FF(cc, dd, aa, bb, X[14], 9); |
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113 FF(bb, cc, dd, aa, X[15], 8); |
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114 |
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115 /* round 2 */ |
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116 GG(aa, bb, cc, dd, X[ 7], 7); |
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117 GG(dd, aa, bb, cc, X[ 4], 6); |
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118 GG(cc, dd, aa, bb, X[13], 8); |
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119 GG(bb, cc, dd, aa, X[ 1], 13); |
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120 GG(aa, bb, cc, dd, X[10], 11); |
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121 GG(dd, aa, bb, cc, X[ 6], 9); |
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122 GG(cc, dd, aa, bb, X[15], 7); |
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123 GG(bb, cc, dd, aa, X[ 3], 15); |
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124 GG(aa, bb, cc, dd, X[12], 7); |
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125 GG(dd, aa, bb, cc, X[ 0], 12); |
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126 GG(cc, dd, aa, bb, X[ 9], 15); |
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127 GG(bb, cc, dd, aa, X[ 5], 9); |
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128 GG(aa, bb, cc, dd, X[ 2], 11); |
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129 GG(dd, aa, bb, cc, X[14], 7); |
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130 GG(cc, dd, aa, bb, X[11], 13); |
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131 GG(bb, cc, dd, aa, X[ 8], 12); |
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132 |
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133 /* round 3 */ |
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134 HH(aa, bb, cc, dd, X[ 3], 11); |
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135 HH(dd, aa, bb, cc, X[10], 13); |
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136 HH(cc, dd, aa, bb, X[14], 6); |
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137 HH(bb, cc, dd, aa, X[ 4], 7); |
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138 HH(aa, bb, cc, dd, X[ 9], 14); |
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139 HH(dd, aa, bb, cc, X[15], 9); |
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140 HH(cc, dd, aa, bb, X[ 8], 13); |
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141 HH(bb, cc, dd, aa, X[ 1], 15); |
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142 HH(aa, bb, cc, dd, X[ 2], 14); |
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143 HH(dd, aa, bb, cc, X[ 7], 8); |
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144 HH(cc, dd, aa, bb, X[ 0], 13); |
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145 HH(bb, cc, dd, aa, X[ 6], 6); |
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146 HH(aa, bb, cc, dd, X[13], 5); |
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147 HH(dd, aa, bb, cc, X[11], 12); |
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148 HH(cc, dd, aa, bb, X[ 5], 7); |
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149 HH(bb, cc, dd, aa, X[12], 5); |
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150 |
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151 /* round 4 */ |
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152 II(aa, bb, cc, dd, X[ 1], 11); |
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153 II(dd, aa, bb, cc, X[ 9], 12); |
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154 II(cc, dd, aa, bb, X[11], 14); |
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155 II(bb, cc, dd, aa, X[10], 15); |
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156 II(aa, bb, cc, dd, X[ 0], 14); |
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157 II(dd, aa, bb, cc, X[ 8], 15); |
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158 II(cc, dd, aa, bb, X[12], 9); |
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159 II(bb, cc, dd, aa, X[ 4], 8); |
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160 II(aa, bb, cc, dd, X[13], 9); |
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161 II(dd, aa, bb, cc, X[ 3], 14); |
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162 II(cc, dd, aa, bb, X[ 7], 5); |
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163 II(bb, cc, dd, aa, X[15], 6); |
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164 II(aa, bb, cc, dd, X[14], 8); |
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165 II(dd, aa, bb, cc, X[ 5], 6); |
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166 II(cc, dd, aa, bb, X[ 6], 5); |
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167 II(bb, cc, dd, aa, X[ 2], 12); |
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168 |
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169 /* parallel round 1 */ |
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170 III(aaa, bbb, ccc, ddd, X[ 5], 8); |
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171 III(ddd, aaa, bbb, ccc, X[14], 9); |
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172 III(ccc, ddd, aaa, bbb, X[ 7], 9); |
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173 III(bbb, ccc, ddd, aaa, X[ 0], 11); |
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174 III(aaa, bbb, ccc, ddd, X[ 9], 13); |
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175 III(ddd, aaa, bbb, ccc, X[ 2], 15); |
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176 III(ccc, ddd, aaa, bbb, X[11], 15); |
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177 III(bbb, ccc, ddd, aaa, X[ 4], 5); |
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178 III(aaa, bbb, ccc, ddd, X[13], 7); |
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179 III(ddd, aaa, bbb, ccc, X[ 6], 7); |
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180 III(ccc, ddd, aaa, bbb, X[15], 8); |
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181 III(bbb, ccc, ddd, aaa, X[ 8], 11); |
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182 III(aaa, bbb, ccc, ddd, X[ 1], 14); |
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183 III(ddd, aaa, bbb, ccc, X[10], 14); |
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184 III(ccc, ddd, aaa, bbb, X[ 3], 12); |
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185 III(bbb, ccc, ddd, aaa, X[12], 6); |
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186 |
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187 /* parallel round 2 */ |
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188 HHH(aaa, bbb, ccc, ddd, X[ 6], 9); |
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189 HHH(ddd, aaa, bbb, ccc, X[11], 13); |
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190 HHH(ccc, ddd, aaa, bbb, X[ 3], 15); |
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191 HHH(bbb, ccc, ddd, aaa, X[ 7], 7); |
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192 HHH(aaa, bbb, ccc, ddd, X[ 0], 12); |
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193 HHH(ddd, aaa, bbb, ccc, X[13], 8); |
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194 HHH(ccc, ddd, aaa, bbb, X[ 5], 9); |
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195 HHH(bbb, ccc, ddd, aaa, X[10], 11); |
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196 HHH(aaa, bbb, ccc, ddd, X[14], 7); |
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197 HHH(ddd, aaa, bbb, ccc, X[15], 7); |
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198 HHH(ccc, ddd, aaa, bbb, X[ 8], 12); |
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199 HHH(bbb, ccc, ddd, aaa, X[12], 7); |
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200 HHH(aaa, bbb, ccc, ddd, X[ 4], 6); |
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201 HHH(ddd, aaa, bbb, ccc, X[ 9], 15); |
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202 HHH(ccc, ddd, aaa, bbb, X[ 1], 13); |
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203 HHH(bbb, ccc, ddd, aaa, X[ 2], 11); |
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204 |
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205 /* parallel round 3 */ |
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206 GGG(aaa, bbb, ccc, ddd, X[15], 9); |
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207 GGG(ddd, aaa, bbb, ccc, X[ 5], 7); |
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208 GGG(ccc, ddd, aaa, bbb, X[ 1], 15); |
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209 GGG(bbb, ccc, ddd, aaa, X[ 3], 11); |
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210 GGG(aaa, bbb, ccc, ddd, X[ 7], 8); |
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211 GGG(ddd, aaa, bbb, ccc, X[14], 6); |
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212 GGG(ccc, ddd, aaa, bbb, X[ 6], 6); |
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213 GGG(bbb, ccc, ddd, aaa, X[ 9], 14); |
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214 GGG(aaa, bbb, ccc, ddd, X[11], 12); |
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215 GGG(ddd, aaa, bbb, ccc, X[ 8], 13); |
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216 GGG(ccc, ddd, aaa, bbb, X[12], 5); |
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217 GGG(bbb, ccc, ddd, aaa, X[ 2], 14); |
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218 GGG(aaa, bbb, ccc, ddd, X[10], 13); |
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219 GGG(ddd, aaa, bbb, ccc, X[ 0], 13); |
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220 GGG(ccc, ddd, aaa, bbb, X[ 4], 7); |
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221 GGG(bbb, ccc, ddd, aaa, X[13], 5); |
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222 |
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223 /* parallel round 4 */ |
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224 FFF(aaa, bbb, ccc, ddd, X[ 8], 15); |
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225 FFF(ddd, aaa, bbb, ccc, X[ 6], 5); |
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226 FFF(ccc, ddd, aaa, bbb, X[ 4], 8); |
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227 FFF(bbb, ccc, ddd, aaa, X[ 1], 11); |
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228 FFF(aaa, bbb, ccc, ddd, X[ 3], 14); |
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229 FFF(ddd, aaa, bbb, ccc, X[11], 14); |
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230 FFF(ccc, ddd, aaa, bbb, X[15], 6); |
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231 FFF(bbb, ccc, ddd, aaa, X[ 0], 14); |
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232 FFF(aaa, bbb, ccc, ddd, X[ 5], 6); |
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233 FFF(ddd, aaa, bbb, ccc, X[12], 9); |
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234 FFF(ccc, ddd, aaa, bbb, X[ 2], 12); |
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235 FFF(bbb, ccc, ddd, aaa, X[13], 9); |
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236 FFF(aaa, bbb, ccc, ddd, X[ 9], 12); |
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237 FFF(ddd, aaa, bbb, ccc, X[ 7], 5); |
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238 FFF(ccc, ddd, aaa, bbb, X[10], 15); |
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239 FFF(bbb, ccc, ddd, aaa, X[14], 8); |
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240 |
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241 /* combine results */ |
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242 ddd += cc + md->rmd128.state[1]; /* final result for MDbuf[0] */ |
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243 md->rmd128.state[1] = md->rmd128.state[2] + dd + aaa; |
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244 md->rmd128.state[2] = md->rmd128.state[3] + aa + bbb; |
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245 md->rmd128.state[3] = md->rmd128.state[0] + bb + ccc; |
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246 md->rmd128.state[0] = ddd; |
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247 } |
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248 |
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249 #ifdef CLEAN_STACK |
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250 static void rmd128_compress(hash_state *md, unsigned char *buf) |
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251 { |
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252 _rmd128_compress(md, buf); |
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253 burn_stack(sizeof(ulong32) * 24 + sizeof(int)); |
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254 } |
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255 #endif |
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256 |
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257 void rmd128_init(hash_state * md) |
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258 { |
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259 _ARGCHK(md != NULL); |
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260 md->rmd128.state[0] = 0x67452301UL; |
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261 md->rmd128.state[1] = 0xefcdab89UL; |
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262 md->rmd128.state[2] = 0x98badcfeUL; |
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263 md->rmd128.state[3] = 0x10325476UL; |
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264 md->rmd128.curlen = 0; |
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265 md->rmd128.length = 0; |
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266 } |
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267 |
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268 HASH_PROCESS(rmd128_process, rmd128_compress, rmd128, 64) |
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269 |
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270 int rmd128_done(hash_state * md, unsigned char *hash) |
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271 { |
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272 int i; |
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273 |
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274 _ARGCHK(md != NULL); |
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275 _ARGCHK(hash != NULL); |
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276 |
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277 if (md->rmd128.curlen >= sizeof(md->rmd128.buf)) { |
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278 return CRYPT_INVALID_ARG; |
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279 } |
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280 |
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281 |
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282 /* increase the length of the message */ |
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283 md->rmd128.length += md->rmd128.curlen * 8; |
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284 |
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285 /* append the '1' bit */ |
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286 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0x80; |
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287 |
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288 /* if the length is currently above 56 bytes we append zeros |
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289 * then compress. Then we can fall back to padding zeros and length |
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290 * encoding like normal. |
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291 */ |
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292 if (md->rmd128.curlen > 56) { |
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293 while (md->rmd128.curlen < 64) { |
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294 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0; |
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295 } |
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296 rmd128_compress(md, md->rmd128.buf); |
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297 md->rmd128.curlen = 0; |
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298 } |
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299 |
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300 /* pad upto 56 bytes of zeroes */ |
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301 while (md->rmd128.curlen < 56) { |
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302 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0; |
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303 } |
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304 |
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305 /* store length */ |
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306 STORE64L(md->rmd128.length, md->rmd128.buf+56); |
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307 rmd128_compress(md, md->rmd128.buf); |
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308 |
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309 /* copy output */ |
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310 for (i = 0; i < 4; i++) { |
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311 STORE32L(md->rmd128.state[i], hash+(4*i)); |
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312 } |
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313 #ifdef CLEAN_STACK |
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314 zeromem(md, sizeof(hash_state)); |
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315 #endif |
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316 return CRYPT_OK; |
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317 } |
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318 |
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319 int rmd128_test(void) |
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320 { |
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321 #ifndef LTC_TEST |
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322 return CRYPT_NOP; |
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323 #else |
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324 static const struct { |
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325 char *msg; |
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326 unsigned char md[16]; |
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327 } tests[] = { |
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328 { "", |
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329 { 0xcd, 0xf2, 0x62, 0x13, 0xa1, 0x50, 0xdc, 0x3e, |
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330 0xcb, 0x61, 0x0f, 0x18, 0xf6, 0xb3, 0x8b, 0x46 } |
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331 }, |
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332 { "a", |
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333 { 0x86, 0xbe, 0x7a, 0xfa, 0x33, 0x9d, 0x0f, 0xc7, |
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334 0xcf, 0xc7, 0x85, 0xe7, 0x2f, 0x57, 0x8d, 0x33 } |
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335 }, |
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336 { "abc", |
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337 { 0xc1, 0x4a, 0x12, 0x19, 0x9c, 0x66, 0xe4, 0xba, |
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338 0x84, 0x63, 0x6b, 0x0f, 0x69, 0x14, 0x4c, 0x77 } |
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339 }, |
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340 { "message digest", |
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341 { 0x9e, 0x32, 0x7b, 0x3d, 0x6e, 0x52, 0x30, 0x62, |
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342 0xaf, 0xc1, 0x13, 0x2d, 0x7d, 0xf9, 0xd1, 0xb8 } |
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343 }, |
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344 { "abcdefghijklmnopqrstuvwxyz", |
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345 { 0xfd, 0x2a, 0xa6, 0x07, 0xf7, 0x1d, 0xc8, 0xf5, |
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346 0x10, 0x71, 0x49, 0x22, 0xb3, 0x71, 0x83, 0x4e } |
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347 }, |
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348 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", |
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349 { 0xd1, 0xe9, 0x59, 0xeb, 0x17, 0x9c, 0x91, 0x1f, |
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350 0xae, 0xa4, 0x62, 0x4c, 0x60, 0xc5, 0xc7, 0x02 } |
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351 } |
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352 }; |
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353 int x; |
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354 unsigned char buf[16]; |
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355 hash_state md; |
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356 |
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357 for (x = 0; x < (int)(sizeof(tests)/sizeof(tests[0])); x++) { |
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358 rmd128_init(&md); |
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359 rmd128_process(&md, (unsigned char *)tests[x].msg, strlen(tests[x].msg)); |
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360 rmd128_done(&md, buf); |
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361 if (memcmp(buf, tests[x].md, 16) != 0) { |
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362 #if 0 |
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363 printf("Failed test %d\n", x); |
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364 #endif |
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365 return CRYPT_FAIL_TESTVECTOR; |
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366 } |
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367 } |
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368 return CRYPT_OK; |
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369 #endif |
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370 } |
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371 |
|
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372 #endif |
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373 |
