1 | // private header for Serpent and Sosemanuk |
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2 | |
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3 | NAMESPACE_BEGIN(CryptoPP) |
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4 | |
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5 | // linear transformation |
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6 | #define LT(i,a,b,c,d,e) {\ |
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7 | a = rotlFixed(a, 13); \ |
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8 | c = rotlFixed(c, 3); \ |
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9 | d = rotlFixed(d ^ c ^ (a << 3), 7); \ |
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10 | b = rotlFixed(b ^ a ^ c, 1); \ |
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11 | a = rotlFixed(a ^ b ^ d, 5); \ |
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12 | c = rotlFixed(c ^ d ^ (b << 7), 22);} |
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13 | |
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14 | // inverse linear transformation |
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15 | #define ILT(i,a,b,c,d,e) {\ |
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16 | c = rotrFixed(c, 22); \ |
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17 | a = rotrFixed(a, 5); \ |
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18 | c ^= d ^ (b << 7); \ |
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19 | a ^= b ^ d; \ |
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20 | b = rotrFixed(b, 1); \ |
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21 | d = rotrFixed(d, 7) ^ c ^ (a << 3); \ |
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22 | b ^= a ^ c; \ |
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23 | c = rotrFixed(c, 3); \ |
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24 | a = rotrFixed(a, 13);} |
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25 | |
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26 | // order of output from S-box functions |
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27 | #define beforeS0(f) f(0,a,b,c,d,e) |
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28 | #define afterS0(f) f(1,b,e,c,a,d) |
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29 | #define afterS1(f) f(2,c,b,a,e,d) |
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30 | #define afterS2(f) f(3,a,e,b,d,c) |
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31 | #define afterS3(f) f(4,e,b,d,c,a) |
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32 | #define afterS4(f) f(5,b,a,e,c,d) |
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33 | #define afterS5(f) f(6,a,c,b,e,d) |
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34 | #define afterS6(f) f(7,a,c,d,b,e) |
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35 | #define afterS7(f) f(8,d,e,b,a,c) |
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36 | |
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37 | // order of output from inverse S-box functions |
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38 | #define beforeI7(f) f(8,a,b,c,d,e) |
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39 | #define afterI7(f) f(7,d,a,b,e,c) |
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40 | #define afterI6(f) f(6,a,b,c,e,d) |
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41 | #define afterI5(f) f(5,b,d,e,c,a) |
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42 | #define afterI4(f) f(4,b,c,e,a,d) |
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43 | #define afterI3(f) f(3,a,b,e,c,d) |
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44 | #define afterI2(f) f(2,b,d,e,c,a) |
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45 | #define afterI1(f) f(1,a,b,c,e,d) |
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46 | #define afterI0(f) f(0,a,d,b,e,c) |
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47 | |
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48 | // The instruction sequences for the S-box functions |
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49 | // come from Dag Arne Osvik's paper "Speeding up Serpent". |
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50 | |
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51 | #define S0(i, r0, r1, r2, r3, r4) \ |
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52 | { \ |
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53 | r3 ^= r0; \ |
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54 | r4 = r1; \ |
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55 | r1 &= r3; \ |
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56 | r4 ^= r2; \ |
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57 | r1 ^= r0; \ |
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58 | r0 |= r3; \ |
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59 | r0 ^= r4; \ |
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60 | r4 ^= r3; \ |
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61 | r3 ^= r2; \ |
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62 | r2 |= r1; \ |
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63 | r2 ^= r4; \ |
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64 | r4 = ~r4; \ |
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65 | r4 |= r1; \ |
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66 | r1 ^= r3; \ |
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67 | r1 ^= r4; \ |
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68 | r3 |= r0; \ |
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69 | r1 ^= r3; \ |
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70 | r4 ^= r3; \ |
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71 | } |
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72 | |
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73 | #define I0(i, r0, r1, r2, r3, r4) \ |
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74 | { \ |
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75 | r2 = ~r2; \ |
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76 | r4 = r1; \ |
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77 | r1 |= r0; \ |
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78 | r4 = ~r4; \ |
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79 | r1 ^= r2; \ |
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80 | r2 |= r4; \ |
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81 | r1 ^= r3; \ |
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82 | r0 ^= r4; \ |
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83 | r2 ^= r0; \ |
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84 | r0 &= r3; \ |
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85 | r4 ^= r0; \ |
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86 | r0 |= r1; \ |
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87 | r0 ^= r2; \ |
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88 | r3 ^= r4; \ |
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89 | r2 ^= r1; \ |
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90 | r3 ^= r0; \ |
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91 | r3 ^= r1; \ |
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92 | r2 &= r3; \ |
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93 | r4 ^= r2; \ |
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94 | } |
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95 | |
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96 | #define S1(i, r0, r1, r2, r3, r4) \ |
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97 | { \ |
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98 | r0 = ~r0; \ |
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99 | r2 = ~r2; \ |
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100 | r4 = r0; \ |
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101 | r0 &= r1; \ |
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102 | r2 ^= r0; \ |
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103 | r0 |= r3; \ |
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104 | r3 ^= r2; \ |
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105 | r1 ^= r0; \ |
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106 | r0 ^= r4; \ |
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107 | r4 |= r1; \ |
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108 | r1 ^= r3; \ |
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109 | r2 |= r0; \ |
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110 | r2 &= r4; \ |
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111 | r0 ^= r1; \ |
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112 | r1 &= r2; \ |
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113 | r1 ^= r0; \ |
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114 | r0 &= r2; \ |
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115 | r0 ^= r4; \ |
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116 | } |
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117 | |
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118 | #define I1(i, r0, r1, r2, r3, r4) \ |
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119 | { \ |
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120 | r4 = r1; \ |
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121 | r1 ^= r3; \ |
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122 | r3 &= r1; \ |
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123 | r4 ^= r2; \ |
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124 | r3 ^= r0; \ |
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125 | r0 |= r1; \ |
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126 | r2 ^= r3; \ |
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127 | r0 ^= r4; \ |
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128 | r0 |= r2; \ |
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129 | r1 ^= r3; \ |
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130 | r0 ^= r1; \ |
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131 | r1 |= r3; \ |
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132 | r1 ^= r0; \ |
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133 | r4 = ~r4; \ |
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134 | r4 ^= r1; \ |
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135 | r1 |= r0; \ |
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136 | r1 ^= r0; \ |
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137 | r1 |= r4; \ |
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138 | r3 ^= r1; \ |
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139 | } |
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140 | |
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141 | #define S2(i, r0, r1, r2, r3, r4) \ |
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142 | { \ |
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143 | r4 = r0; \ |
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144 | r0 &= r2; \ |
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145 | r0 ^= r3; \ |
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146 | r2 ^= r1; \ |
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147 | r2 ^= r0; \ |
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148 | r3 |= r4; \ |
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149 | r3 ^= r1; \ |
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150 | r4 ^= r2; \ |
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151 | r1 = r3; \ |
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152 | r3 |= r4; \ |
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153 | r3 ^= r0; \ |
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154 | r0 &= r1; \ |
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155 | r4 ^= r0; \ |
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156 | r1 ^= r3; \ |
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157 | r1 ^= r4; \ |
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158 | r4 = ~r4; \ |
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159 | } |
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160 | |
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161 | #define I2(i, r0, r1, r2, r3, r4) \ |
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162 | { \ |
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163 | r2 ^= r3; \ |
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164 | r3 ^= r0; \ |
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165 | r4 = r3; \ |
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166 | r3 &= r2; \ |
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167 | r3 ^= r1; \ |
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168 | r1 |= r2; \ |
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169 | r1 ^= r4; \ |
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170 | r4 &= r3; \ |
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171 | r2 ^= r3; \ |
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172 | r4 &= r0; \ |
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173 | r4 ^= r2; \ |
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174 | r2 &= r1; \ |
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175 | r2 |= r0; \ |
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176 | r3 = ~r3; \ |
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177 | r2 ^= r3; \ |
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178 | r0 ^= r3; \ |
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179 | r0 &= r1; \ |
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180 | r3 ^= r4; \ |
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181 | r3 ^= r0; \ |
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182 | } |
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183 | |
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184 | #define S3(i, r0, r1, r2, r3, r4) \ |
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185 | { \ |
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186 | r4 = r0; \ |
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187 | r0 |= r3; \ |
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188 | r3 ^= r1; \ |
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189 | r1 &= r4; \ |
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190 | r4 ^= r2; \ |
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191 | r2 ^= r3; \ |
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192 | r3 &= r0; \ |
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193 | r4 |= r1; \ |
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194 | r3 ^= r4; \ |
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195 | r0 ^= r1; \ |
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196 | r4 &= r0; \ |
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197 | r1 ^= r3; \ |
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198 | r4 ^= r2; \ |
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199 | r1 |= r0; \ |
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200 | r1 ^= r2; \ |
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201 | r0 ^= r3; \ |
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202 | r2 = r1; \ |
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203 | r1 |= r3; \ |
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204 | r1 ^= r0; \ |
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205 | } |
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206 | |
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207 | #define I3(i, r0, r1, r2, r3, r4) \ |
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208 | { \ |
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209 | r4 = r2; \ |
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210 | r2 ^= r1; \ |
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211 | r1 &= r2; \ |
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212 | r1 ^= r0; \ |
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213 | r0 &= r4; \ |
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214 | r4 ^= r3; \ |
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215 | r3 |= r1; \ |
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216 | r3 ^= r2; \ |
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217 | r0 ^= r4; \ |
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218 | r2 ^= r0; \ |
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219 | r0 |= r3; \ |
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220 | r0 ^= r1; \ |
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221 | r4 ^= r2; \ |
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222 | r2 &= r3; \ |
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223 | r1 |= r3; \ |
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224 | r1 ^= r2; \ |
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225 | r4 ^= r0; \ |
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226 | r2 ^= r4; \ |
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227 | } |
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228 | |
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229 | #define S4(i, r0, r1, r2, r3, r4) \ |
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230 | { \ |
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231 | r1 ^= r3; \ |
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232 | r3 = ~r3; \ |
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233 | r2 ^= r3; \ |
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234 | r3 ^= r0; \ |
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235 | r4 = r1; \ |
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236 | r1 &= r3; \ |
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237 | r1 ^= r2; \ |
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238 | r4 ^= r3; \ |
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239 | r0 ^= r4; \ |
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240 | r2 &= r4; \ |
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241 | r2 ^= r0; \ |
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242 | r0 &= r1; \ |
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243 | r3 ^= r0; \ |
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244 | r4 |= r1; \ |
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245 | r4 ^= r0; \ |
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246 | r0 |= r3; \ |
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247 | r0 ^= r2; \ |
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248 | r2 &= r3; \ |
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249 | r0 = ~r0; \ |
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250 | r4 ^= r2; \ |
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251 | } |
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252 | |
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253 | #define I4(i, r0, r1, r2, r3, r4) \ |
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254 | { \ |
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255 | r4 = r2; \ |
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256 | r2 &= r3; \ |
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257 | r2 ^= r1; \ |
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258 | r1 |= r3; \ |
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259 | r1 &= r0; \ |
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260 | r4 ^= r2; \ |
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261 | r4 ^= r1; \ |
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262 | r1 &= r2; \ |
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263 | r0 = ~r0; \ |
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264 | r3 ^= r4; \ |
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265 | r1 ^= r3; \ |
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266 | r3 &= r0; \ |
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267 | r3 ^= r2; \ |
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268 | r0 ^= r1; \ |
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269 | r2 &= r0; \ |
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270 | r3 ^= r0; \ |
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271 | r2 ^= r4; \ |
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272 | r2 |= r3; \ |
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273 | r3 ^= r0; \ |
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274 | r2 ^= r1; \ |
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275 | } |
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276 | |
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277 | #define S5(i, r0, r1, r2, r3, r4) \ |
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278 | { \ |
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279 | r0 ^= r1; \ |
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280 | r1 ^= r3; \ |
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281 | r3 = ~r3; \ |
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282 | r4 = r1; \ |
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283 | r1 &= r0; \ |
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284 | r2 ^= r3; \ |
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285 | r1 ^= r2; \ |
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286 | r2 |= r4; \ |
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287 | r4 ^= r3; \ |
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288 | r3 &= r1; \ |
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289 | r3 ^= r0; \ |
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290 | r4 ^= r1; \ |
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291 | r4 ^= r2; \ |
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292 | r2 ^= r0; \ |
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293 | r0 &= r3; \ |
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294 | r2 = ~r2; \ |
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295 | r0 ^= r4; \ |
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296 | r4 |= r3; \ |
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297 | r2 ^= r4; \ |
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298 | } |
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299 | |
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300 | #define I5(i, r0, r1, r2, r3, r4) \ |
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301 | { \ |
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302 | r1 = ~r1; \ |
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303 | r4 = r3; \ |
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304 | r2 ^= r1; \ |
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305 | r3 |= r0; \ |
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306 | r3 ^= r2; \ |
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307 | r2 |= r1; \ |
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308 | r2 &= r0; \ |
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309 | r4 ^= r3; \ |
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310 | r2 ^= r4; \ |
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311 | r4 |= r0; \ |
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312 | r4 ^= r1; \ |
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313 | r1 &= r2; \ |
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314 | r1 ^= r3; \ |
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315 | r4 ^= r2; \ |
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316 | r3 &= r4; \ |
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317 | r4 ^= r1; \ |
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318 | r3 ^= r0; \ |
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319 | r3 ^= r4; \ |
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320 | r4 = ~r4; \ |
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321 | } |
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322 | |
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323 | #define S6(i, r0, r1, r2, r3, r4) \ |
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324 | { \ |
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325 | r2 = ~r2; \ |
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326 | r4 = r3; \ |
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327 | r3 &= r0; \ |
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328 | r0 ^= r4; \ |
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329 | r3 ^= r2; \ |
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330 | r2 |= r4; \ |
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331 | r1 ^= r3; \ |
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332 | r2 ^= r0; \ |
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333 | r0 |= r1; \ |
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334 | r2 ^= r1; \ |
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335 | r4 ^= r0; \ |
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336 | r0 |= r3; \ |
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337 | r0 ^= r2; \ |
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338 | r4 ^= r3; \ |
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339 | r4 ^= r0; \ |
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340 | r3 = ~r3; \ |
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341 | r2 &= r4; \ |
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342 | r2 ^= r3; \ |
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343 | } |
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344 | |
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345 | #define I6(i, r0, r1, r2, r3, r4) \ |
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346 | { \ |
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347 | r0 ^= r2; \ |
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348 | r4 = r2; \ |
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349 | r2 &= r0; \ |
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350 | r4 ^= r3; \ |
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351 | r2 = ~r2; \ |
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352 | r3 ^= r1; \ |
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353 | r2 ^= r3; \ |
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354 | r4 |= r0; \ |
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355 | r0 ^= r2; \ |
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356 | r3 ^= r4; \ |
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357 | r4 ^= r1; \ |
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358 | r1 &= r3; \ |
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359 | r1 ^= r0; \ |
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360 | r0 ^= r3; \ |
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361 | r0 |= r2; \ |
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362 | r3 ^= r1; \ |
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363 | r4 ^= r0; \ |
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364 | } |
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365 | |
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366 | #define S7(i, r0, r1, r2, r3, r4) \ |
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367 | { \ |
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368 | r4 = r2; \ |
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369 | r2 &= r1; \ |
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370 | r2 ^= r3; \ |
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371 | r3 &= r1; \ |
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372 | r4 ^= r2; \ |
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373 | r2 ^= r1; \ |
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374 | r1 ^= r0; \ |
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375 | r0 |= r4; \ |
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376 | r0 ^= r2; \ |
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377 | r3 ^= r1; \ |
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378 | r2 ^= r3; \ |
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379 | r3 &= r0; \ |
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380 | r3 ^= r4; \ |
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381 | r4 ^= r2; \ |
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382 | r2 &= r0; \ |
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383 | r4 = ~r4; \ |
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384 | r2 ^= r4; \ |
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385 | r4 &= r0; \ |
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386 | r1 ^= r3; \ |
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387 | r4 ^= r1; \ |
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388 | } |
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389 | |
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390 | #define I7(i, r0, r1, r2, r3, r4) \ |
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391 | { \ |
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392 | r4 = r2; \ |
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393 | r2 ^= r0; \ |
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394 | r0 &= r3; \ |
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395 | r2 = ~r2; \ |
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396 | r4 |= r3; \ |
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397 | r3 ^= r1; \ |
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398 | r1 |= r0; \ |
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399 | r0 ^= r2; \ |
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400 | r2 &= r4; \ |
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401 | r1 ^= r2; \ |
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402 | r2 ^= r0; \ |
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403 | r0 |= r2; \ |
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404 | r3 &= r4; \ |
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405 | r0 ^= r3; \ |
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406 | r4 ^= r1; \ |
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407 | r3 ^= r4; \ |
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408 | r4 |= r0; \ |
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409 | r3 ^= r2; \ |
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410 | r4 ^= r2; \ |
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411 | } |
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412 | |
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413 | // key xor |
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414 | #define KX(r, a, b, c, d, e) {\ |
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415 | a ^= k[4 * r + 0]; \ |
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416 | b ^= k[4 * r + 1]; \ |
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417 | c ^= k[4 * r + 2]; \ |
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418 | d ^= k[4 * r + 3];} |
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419 | |
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420 | #define LK(r, a, b, c, d, e) {\ |
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421 | a = k[(8-r)*4 + 0]; \ |
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422 | b = k[(8-r)*4 + 1]; \ |
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423 | c = k[(8-r)*4 + 2]; \ |
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424 | d = k[(8-r)*4 + 3];} |
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425 | |
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426 | #define SK(r, a, b, c, d, e) {\ |
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427 | k[(8-r)*4 + 4] = a; \ |
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428 | k[(8-r)*4 + 5] = b; \ |
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429 | k[(8-r)*4 + 6] = c; \ |
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430 | k[(8-r)*4 + 7] = d;} |
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431 | |
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432 | void Serpent_KeySchedule(word32 *k, unsigned int rounds, const byte *userKey, size_t keylen); |
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433 | |
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434 | NAMESPACE_END |
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