annotate rmd128.c @ 164:cd1143579f00 libtomcrypt LTC_DB_0.44

mpi.c isn't needed if we're using libtommath seperately
author Matt Johnston <matt@ucc.asn.au>
date Sun, 02 Jan 2005 17:19:46 +0000
parents 5d99163f7e32
children
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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,
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
3
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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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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 int _rmd128_compress(hash_state *md, unsigned char *buf)
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79 #else
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80 static int 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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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 II(bb, cc, dd, aa, X[ 4], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 II(aa, bb, cc, dd, X[13], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 II(dd, aa, bb, cc, X[ 3], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162 II(cc, dd, aa, bb, X[ 7], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 II(bb, cc, dd, aa, X[15], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 II(aa, bb, cc, dd, X[14], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165 II(dd, aa, bb, cc, X[ 5], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 II(cc, dd, aa, bb, X[ 6], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 II(bb, cc, dd, aa, X[ 2], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 /* parallel round 1 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 III(aaa, bbb, ccc, ddd, X[ 5], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 III(ddd, aaa, bbb, ccc, X[14], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 III(ccc, ddd, aaa, bbb, X[ 7], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 III(bbb, ccc, ddd, aaa, X[ 0], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 III(aaa, bbb, ccc, ddd, X[ 9], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 III(ddd, aaa, bbb, ccc, X[ 2], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 III(ccc, ddd, aaa, bbb, X[11], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 III(bbb, ccc, ddd, aaa, X[ 4], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 III(aaa, bbb, ccc, ddd, X[13], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 III(ddd, aaa, bbb, ccc, X[ 6], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 III(ccc, ddd, aaa, bbb, X[15], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 III(bbb, ccc, ddd, aaa, X[ 8], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 III(aaa, bbb, ccc, ddd, X[ 1], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 III(ddd, aaa, bbb, ccc, X[10], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 III(ccc, ddd, aaa, bbb, X[ 3], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 III(bbb, ccc, ddd, aaa, X[12], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 /* parallel round 2 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 HHH(aaa, bbb, ccc, ddd, X[ 6], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 HHH(ddd, aaa, bbb, ccc, X[11], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 HHH(ccc, ddd, aaa, bbb, X[ 3], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 HHH(bbb, ccc, ddd, aaa, X[ 7], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
192 HHH(aaa, bbb, ccc, ddd, X[ 0], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 HHH(ddd, aaa, bbb, ccc, X[13], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 HHH(ccc, ddd, aaa, bbb, X[ 5], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195 HHH(bbb, ccc, ddd, aaa, X[10], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196 HHH(aaa, bbb, ccc, ddd, X[14], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 HHH(ddd, aaa, bbb, ccc, X[15], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 HHH(ccc, ddd, aaa, bbb, X[ 8], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 HHH(bbb, ccc, ddd, aaa, X[12], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200 HHH(aaa, bbb, ccc, ddd, X[ 4], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 HHH(ddd, aaa, bbb, ccc, X[ 9], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 HHH(ccc, ddd, aaa, bbb, X[ 1], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 HHH(bbb, ccc, ddd, aaa, X[ 2], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 /* parallel round 3 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 GGG(aaa, bbb, ccc, ddd, X[15], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 GGG(ddd, aaa, bbb, ccc, X[ 5], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 GGG(ccc, ddd, aaa, bbb, X[ 1], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 GGG(bbb, ccc, ddd, aaa, X[ 3], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 GGG(aaa, bbb, ccc, ddd, X[ 7], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 GGG(ddd, aaa, bbb, ccc, X[14], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 GGG(ccc, ddd, aaa, bbb, X[ 6], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 GGG(bbb, ccc, ddd, aaa, X[ 9], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 GGG(aaa, bbb, ccc, ddd, X[11], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 GGG(ddd, aaa, bbb, ccc, X[ 8], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 GGG(ccc, ddd, aaa, bbb, X[12], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 GGG(bbb, ccc, ddd, aaa, X[ 2], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 GGG(aaa, bbb, ccc, ddd, X[10], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 GGG(ddd, aaa, bbb, ccc, X[ 0], 13);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 GGG(ccc, ddd, aaa, bbb, X[ 4], 7);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 GGG(bbb, ccc, ddd, aaa, X[13], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 /* parallel round 4 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 FFF(aaa, bbb, ccc, ddd, X[ 8], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 FFF(ddd, aaa, bbb, ccc, X[ 6], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 FFF(ccc, ddd, aaa, bbb, X[ 4], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 FFF(bbb, ccc, ddd, aaa, X[ 1], 11);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228 FFF(aaa, bbb, ccc, ddd, X[ 3], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 FFF(ddd, aaa, bbb, ccc, X[11], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 FFF(ccc, ddd, aaa, bbb, X[15], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 FFF(bbb, ccc, ddd, aaa, X[ 0], 14);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232 FFF(aaa, bbb, ccc, ddd, X[ 5], 6);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 FFF(ddd, aaa, bbb, ccc, X[12], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 FFF(ccc, ddd, aaa, bbb, X[ 2], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 FFF(bbb, ccc, ddd, aaa, X[13], 9);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 FFF(aaa, bbb, ccc, ddd, X[ 9], 12);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 FFF(ddd, aaa, bbb, ccc, X[ 7], 5);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 FFF(ccc, ddd, aaa, bbb, X[10], 15);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 FFF(bbb, ccc, ddd, aaa, X[14], 8);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 /* combine results */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 ddd += cc + md->rmd128.state[1]; /* final result for MDbuf[0] */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 md->rmd128.state[1] = md->rmd128.state[2] + dd + aaa;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 md->rmd128.state[2] = md->rmd128.state[3] + aa + bbb;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 md->rmd128.state[3] = md->rmd128.state[0] + bb + ccc;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 md->rmd128.state[0] = ddd;
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
247
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
248 return CRYPT_OK;
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 #ifdef CLEAN_STACK
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
252 static int rmd128_compress(hash_state *md, unsigned char *buf)
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 {
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
254 int err;
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
255 err = _rmd128_compress(md, buf);
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 burn_stack(sizeof(ulong32) * 24 + sizeof(int));
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
257 return err;
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
259 #endif
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
261 int rmd128_init(hash_state * md)
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 {
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263 _ARGCHK(md != NULL);
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 md->rmd128.state[0] = 0x67452301UL;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265 md->rmd128.state[1] = 0xefcdab89UL;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
266 md->rmd128.state[2] = 0x98badcfeUL;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 md->rmd128.state[3] = 0x10325476UL;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268 md->rmd128.curlen = 0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
269 md->rmd128.length = 0;
143
5d99163f7e32 import of libtomcrypt 0.99
Matt Johnston <matt@ucc.asn.au>
parents: 15
diff changeset
270 return CRYPT_OK;
3
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
271 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
272
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
273 HASH_PROCESS(rmd128_process, rmd128_compress, rmd128, 64)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
274
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
275 int rmd128_done(hash_state * md, unsigned char *hash)
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
276 {
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
277 int i;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
278
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
279 _ARGCHK(md != NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
280 _ARGCHK(hash != NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
281
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
282 if (md->rmd128.curlen >= sizeof(md->rmd128.buf)) {
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
283 return CRYPT_INVALID_ARG;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
284 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
285
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
286
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
287 /* increase the length of the message */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
288 md->rmd128.length += md->rmd128.curlen * 8;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
289
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
290 /* append the '1' bit */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
291 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0x80;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
292
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
293 /* if the length is currently above 56 bytes we append zeros
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
294 * then compress. Then we can fall back to padding zeros and length
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
295 * encoding like normal.
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
296 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
297 if (md->rmd128.curlen > 56) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
298 while (md->rmd128.curlen < 64) {
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
299 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
300 }
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
301 rmd128_compress(md, md->rmd128.buf);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
302 md->rmd128.curlen = 0;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
303 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
304
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
305 /* pad upto 56 bytes of zeroes */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
306 while (md->rmd128.curlen < 56) {
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
307 md->rmd128.buf[md->rmd128.curlen++] = (unsigned char)0;
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
308 }
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
309
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
310 /* store length */
7faae8f46238 Branch renaming
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
311 STORE64L(md->rmd128.length, md->rmd128.buf+56);
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312 rmd128_compress(md, md->rmd128.buf);
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313
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314 /* copy output */
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315 for (i = 0; i < 4; i++) {
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316 STORE32L(md->rmd128.state[i], hash+(4*i));
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317 }
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318 #ifdef CLEAN_STACK
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319 zeromem(md, sizeof(hash_state));
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320 #endif
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321 return CRYPT_OK;
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322 }
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323
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324 int rmd128_test(void)
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325 {
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326 #ifndef LTC_TEST
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327 return CRYPT_NOP;
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328 #else
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329 static const struct {
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330 char *msg;
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331 unsigned char md[16];
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332 } tests[] = {
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333 { "",
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334 { 0xcd, 0xf2, 0x62, 0x13, 0xa1, 0x50, 0xdc, 0x3e,
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335 0xcb, 0x61, 0x0f, 0x18, 0xf6, 0xb3, 0x8b, 0x46 }
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336 },
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337 { "a",
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338 { 0x86, 0xbe, 0x7a, 0xfa, 0x33, 0x9d, 0x0f, 0xc7,
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339 0xcf, 0xc7, 0x85, 0xe7, 0x2f, 0x57, 0x8d, 0x33 }
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340 },
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341 { "abc",
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342 { 0xc1, 0x4a, 0x12, 0x19, 0x9c, 0x66, 0xe4, 0xba,
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343 0x84, 0x63, 0x6b, 0x0f, 0x69, 0x14, 0x4c, 0x77 }
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344 },
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345 { "message digest",
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346 { 0x9e, 0x32, 0x7b, 0x3d, 0x6e, 0x52, 0x30, 0x62,
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347 0xaf, 0xc1, 0x13, 0x2d, 0x7d, 0xf9, 0xd1, 0xb8 }
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348 },
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349 { "abcdefghijklmnopqrstuvwxyz",
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350 { 0xfd, 0x2a, 0xa6, 0x07, 0xf7, 0x1d, 0xc8, 0xf5,
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351 0x10, 0x71, 0x49, 0x22, 0xb3, 0x71, 0x83, 0x4e }
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352 },
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353 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
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354 { 0xd1, 0xe9, 0x59, 0xeb, 0x17, 0x9c, 0x91, 0x1f,
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355 0xae, 0xa4, 0x62, 0x4c, 0x60, 0xc5, 0xc7, 0x02 }
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356 }
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357 };
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358 int x;
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359 unsigned char buf[16];
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360 hash_state md;
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361
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362 for (x = 0; x < (int)(sizeof(tests)/sizeof(tests[0])); x++) {
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363 rmd128_init(&md);
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364 rmd128_process(&md, (unsigned char *)tests[x].msg, strlen(tests[x].msg));
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365 rmd128_done(&md, buf);
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366 if (memcmp(buf, tests[x].md, 16) != 0) {
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367 #if 0
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368 printf("Failed test %d\n", x);
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369 #endif
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370 return CRYPT_FAIL_TESTVECTOR;
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371 }
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372 }
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373 return CRYPT_OK;
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374 #endif
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375 }
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376
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377 #endif
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378