Mercurial > dropbear

annotate src/hashes/md4.c @ 222:36160290a1b2 libtomcrypt LTC_DB_0.46

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* change include path of options.h * don't use the constant ROL/ROR operations, since compilers seem to have problems
author Matt Johnston <matt@ucc.asn.au>
date Fri, 08 Jul 2005 19:13:24 +0000
parents 39d5d58461d6
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 #include "tomcrypt.h"
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12
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13 /**
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14 @param md4.c
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15 Submitted by Dobes Vandermeer ([email protected])
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16 */
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17
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18 #ifdef MD4
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19
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20 const struct ltc_hash_descriptor md4_desc =
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21 {
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22 "md4",
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23 6,
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24 16,
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25 64,
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26
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27 /* OID */
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28 { 1, 2, 840, 113549, 2, 4, },
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29 6,
191
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30
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31 &md4_init,
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32 &md4_process,
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33 &md4_done,
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34 &md4_test
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35 };
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36
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37 #define S11 3
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38 #define S12 7
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39 #define S13 11
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40 #define S14 19
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41 #define S21 3
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42 #define S22 5
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43 #define S23 9
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44 #define S24 13
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45 #define S31 3
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46 #define S32 9
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47 #define S33 11
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48 #define S34 15
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49
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50 /* F, G and H are basic MD4 functions. */
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51 #define F(x, y, z) (z ^ (x & (y ^ z)))
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52 #define G(x, y, z) ((x & y) | (z & (x | y)))
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53 #define H(x, y, z) ((x) ^ (y) ^ (z))
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54
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55 /* ROTATE_LEFT rotates x left n bits. */
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56 #define ROTATE_LEFT(x, n) ROLc(x, n)
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57
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58 /* FF, GG and HH are transformations for rounds 1, 2 and 3 */
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59 /* Rotation is separate from addition to prevent recomputation */
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60
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61 #define FF(a, b, c, d, x, s) { \
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62 (a) += F ((b), (c), (d)) + (x); \
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63 (a) = ROTATE_LEFT ((a), (s)); \
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64 }
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65 #define GG(a, b, c, d, x, s) { \
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66 (a) += G ((b), (c), (d)) + (x) + 0x5a827999UL; \
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67 (a) = ROTATE_LEFT ((a), (s)); \
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68 }
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69 #define HH(a, b, c, d, x, s) { \
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70 (a) += H ((b), (c), (d)) + (x) + 0x6ed9eba1UL; \
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71 (a) = ROTATE_LEFT ((a), (s)); \
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72 }
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73
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74 #ifdef LTC_CLEAN_STACK
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75 static int _md4_compress(hash_state *md, unsigned char *buf)
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76 #else
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77 static int md4_compress(hash_state *md, unsigned char *buf)
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78 #endif
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79 {
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80 ulong32 x[16], a, b, c, d;
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81 int i;
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82
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83 /* copy state */
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84 a = md->md4.state[0];
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85 b = md->md4.state[1];
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86 c = md->md4.state[2];
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87 d = md->md4.state[3];
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88
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89 /* copy the state into 512-bits into W[0..15] */
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90 for (i = 0; i < 16; i++) {
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91 LOAD32L(x[i], buf + (4*i));
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92 }
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93
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94 /* Round 1 */
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95 FF (a, b, c, d, x[ 0], S11); /* 1 */
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96 FF (d, a, b, c, x[ 1], S12); /* 2 */
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97 FF (c, d, a, b, x[ 2], S13); /* 3 */
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98 FF (b, c, d, a, x[ 3], S14); /* 4 */
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99 FF (a, b, c, d, x[ 4], S11); /* 5 */
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100 FF (d, a, b, c, x[ 5], S12); /* 6 */
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101 FF (c, d, a, b, x[ 6], S13); /* 7 */
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102 FF (b, c, d, a, x[ 7], S14); /* 8 */
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103 FF (a, b, c, d, x[ 8], S11); /* 9 */
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104 FF (d, a, b, c, x[ 9], S12); /* 10 */
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105 FF (c, d, a, b, x[10], S13); /* 11 */
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106 FF (b, c, d, a, x[11], S14); /* 12 */
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107 FF (a, b, c, d, x[12], S11); /* 13 */
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108 FF (d, a, b, c, x[13], S12); /* 14 */
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109 FF (c, d, a, b, x[14], S13); /* 15 */
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110 FF (b, c, d, a, x[15], S14); /* 16 */
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111
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112 /* Round 2 */
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113 GG (a, b, c, d, x[ 0], S21); /* 17 */
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114 GG (d, a, b, c, x[ 4], S22); /* 18 */
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115 GG (c, d, a, b, x[ 8], S23); /* 19 */
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116 GG (b, c, d, a, x[12], S24); /* 20 */
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117 GG (a, b, c, d, x[ 1], S21); /* 21 */
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118 GG (d, a, b, c, x[ 5], S22); /* 22 */
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119 GG (c, d, a, b, x[ 9], S23); /* 23 */
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120 GG (b, c, d, a, x[13], S24); /* 24 */
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121 GG (a, b, c, d, x[ 2], S21); /* 25 */
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122 GG (d, a, b, c, x[ 6], S22); /* 26 */
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123 GG (c, d, a, b, x[10], S23); /* 27 */
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124 GG (b, c, d, a, x[14], S24); /* 28 */
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125 GG (a, b, c, d, x[ 3], S21); /* 29 */
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126 GG (d, a, b, c, x[ 7], S22); /* 30 */
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127 GG (c, d, a, b, x[11], S23); /* 31 */
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128 GG (b, c, d, a, x[15], S24); /* 32 */
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129
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130 /* Round 3 */
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131 HH (a, b, c, d, x[ 0], S31); /* 33 */
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132 HH (d, a, b, c, x[ 8], S32); /* 34 */
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diff changeset
133 HH (c, d, a, b, x[ 4], S33); /* 35 */
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parents:
diff changeset
134 HH (b, c, d, a, x[12], S34); /* 36 */
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parents:
diff changeset
135 HH (a, b, c, d, x[ 2], S31); /* 37 */
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parents:
diff changeset
136 HH (d, a, b, c, x[10], S32); /* 38 */
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parents:
diff changeset
137 HH (c, d, a, b, x[ 6], S33); /* 39 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
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parents:
diff changeset
138 HH (b, c, d, a, x[14], S34); /* 40 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
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parents:
diff changeset
139 HH (a, b, c, d, x[ 1], S31); /* 41 */
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parents:
diff changeset
140 HH (d, a, b, c, x[ 9], S32); /* 42 */
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parents:
diff changeset
141 HH (c, d, a, b, x[ 5], S33); /* 43 */
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parents:
diff changeset
142 HH (b, c, d, a, x[13], S34); /* 44 */
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parents:
diff changeset
143 HH (a, b, c, d, x[ 3], S31); /* 45 */
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diff changeset
144 HH (d, a, b, c, x[11], S32); /* 46 */
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parents:
diff changeset
145 HH (c, d, a, b, x[ 7], S33); /* 47 */
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parents:
diff changeset
146 HH (b, c, d, a, x[15], S34); /* 48 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149 /* Update our state */
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diff changeset
150 md->md4.state[0] = md->md4.state[0] + a;
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parents:
diff changeset
151 md->md4.state[1] = md->md4.state[1] + b;
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diff changeset
152 md->md4.state[2] = md->md4.state[2] + c;
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diff changeset
153 md->md4.state[3] = md->md4.state[3] + d;
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diff changeset
154
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diff changeset
155 return CRYPT_OK;
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parents:
diff changeset
156 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
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diff changeset
158 #ifdef LTC_CLEAN_STACK
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diff changeset
159 static int md4_compress(hash_state *md, unsigned char *buf)
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160 {
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
161 int err;
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diff changeset
162 err = _md4_compress(md, buf);
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diff changeset
163 burn_stack(sizeof(ulong32) * 20 + sizeof(int));
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diff changeset
164 return err;
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parents:
diff changeset
165 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 #endif
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diff changeset
167
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168 /**
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
169 Initialize the hash state
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diff changeset
170 @param md The hash state you wish to initialize
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diff changeset
171 @return CRYPT_OK if successful
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Matt Johnston <matt@ucc.asn.au>
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172 */
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
173 int md4_init(hash_state * md)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 {
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175 LTC_ARGCHK(md != NULL);
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diff changeset
176 md->md4.state[0] = 0x67452301UL;
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177 md->md4.state[1] = 0xefcdab89UL;
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diff changeset
178 md->md4.state[2] = 0x98badcfeUL;
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diff changeset
179 md->md4.state[3] = 0x10325476UL;
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diff changeset
180 md->md4.length = 0;
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diff changeset
181 md->md4.curlen = 0;
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diff changeset
182 return CRYPT_OK;
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diff changeset
183 }
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diff changeset
184
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185 /**
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
186 Process a block of memory though the hash
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
187 @param md The hash state
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Matt Johnston <matt@ucc.asn.au>
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188 @param in The data to hash
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diff changeset
189 @param inlen The length of the data (octets)
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190 @return CRYPT_OK if successful
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191 */
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diff changeset
192 HASH_PROCESS(md4_process, md4_compress, md4, 64)
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193
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194 /**
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
195 Terminate the hash to get the digest
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
196 @param md The hash state
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197 @param out [out] The destination of the hash (16 bytes)
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diff changeset
198 @return CRYPT_OK if successful
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199 */
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
200 int md4_done(hash_state * md, unsigned char *out)
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diff changeset
201 {
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
202 int i;
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Matt Johnston <matt@ucc.asn.au>
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diff changeset
203
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diff changeset
204 LTC_ARGCHK(md != NULL);
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parents:
diff changeset
205 LTC_ARGCHK(out != NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206
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diff changeset
207 if (md->md4.curlen >= sizeof(md->md4.buf)) {
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diff changeset
208 return CRYPT_INVALID_ARG;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 /* increase the length of the message */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 md->md4.length += md->md4.curlen * 8;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 /* append the '1' bit */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 md->md4.buf[md->md4.curlen++] = (unsigned char)0x80;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 /* if the length is currently above 56 bytes we append zeros
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 * then compress. Then we can fall back to padding zeros and length
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 * encoding like normal.
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 if (md->md4.curlen > 56) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 while (md->md4.curlen < 64) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 md->md4.buf[md->md4.curlen++] = (unsigned char)0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 md4_compress(md, md->md4.buf);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 md->md4.curlen = 0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 /* pad upto 56 bytes of zeroes */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 while (md->md4.curlen < 56) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 md->md4.buf[md->md4.curlen++] = (unsigned char)0;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 /* store length */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 STORE64L(md->md4.length, md->md4.buf+56);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 md4_compress(md, md->md4.buf);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 /* copy output */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 for (i = 0; i < 4; i++) {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240 STORE32L(md->md4.state[i], out+(4*i));
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 #ifdef LTC_CLEAN_STACK
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 zeromem(md, sizeof(hash_state));
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 #endif
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 return CRYPT_OK;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 }
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248 /**
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 Self-test the hash
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 @return CRYPT_OK if successful, CRYPT_NOP if self-tests have been disabled
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 */
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 int md4_test(void)
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254 #ifndef LTC_TEST
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
255 return CRYPT_NOP;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256 #else
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
257 static const struct md4_test_case {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
258 char *input;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
259 unsigned char digest[16];
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260 } cases[] = {
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 { "",
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
262 {0x31, 0xd6, 0xcf, 0xe0, 0xd1, 0x6a, 0xe9, 0x31,
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
263 0xb7, 0x3c, 0x59, 0xd7, 0xe0, 0xc0, 0x89, 0xc0} },
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
264 { "a",
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
265 {0xbd, 0xe5, 0x2c, 0xb3, 0x1d, 0xe3, 0x3e, 0x46,
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
266 0x24, 0x5e, 0x05, 0xfb, 0xdb, 0xd6, 0xfb, 0x24} },
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267 { "abc",
1c15b283127b Import of libtomcrypt 1.02 with manual path rename rearrangement etc
Matt Johnston <matt@ucc.asn.au>
parents:
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268 {0xa4, 0x48, 0x01, 0x7a, 0xaf, 0x21, 0xd8, 0x52,
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269 0x5f, 0xc1, 0x0a, 0xe8, 0x7a, 0xa6, 0x72, 0x9d} },
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270 { "message digest",
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271 {0xd9, 0x13, 0x0a, 0x81, 0x64, 0x54, 0x9f, 0xe8,
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272 0x18, 0x87, 0x48, 0x06, 0xe1, 0xc7, 0x01, 0x4b} },
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273 { "abcdefghijklmnopqrstuvwxyz",
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274 {0xd7, 0x9e, 0x1c, 0x30, 0x8a, 0xa5, 0xbb, 0xcd,
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275 0xee, 0xa8, 0xed, 0x63, 0xdf, 0x41, 0x2d, 0xa9} },
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276 { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
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277 {0x04, 0x3f, 0x85, 0x82, 0xf2, 0x41, 0xdb, 0x35,
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278 0x1c, 0xe6, 0x27, 0xe1, 0x53, 0xe7, 0xf0, 0xe4} },
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279 { "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
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280 {0xe3, 0x3b, 0x4d, 0xdc, 0x9c, 0x38, 0xf2, 0x19,
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281 0x9c, 0x3e, 0x7b, 0x16, 0x4f, 0xcc, 0x05, 0x36} },
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282 };
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283 int i;
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284 hash_state md;
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285 unsigned char digest[16];
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286
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287 for(i = 0; i < (int)(sizeof(cases) / sizeof(cases[0])); i++) {
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288 md4_init(&md);
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289 md4_process(&md, (unsigned char *)cases[i].input, (unsigned long)strlen(cases[i].input));
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290 md4_done(&md, digest);
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291 if (memcmp(digest, cases[i].digest, 16) != 0) {
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292 return CRYPT_FAIL_TESTVECTOR;
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293 }
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294
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295 }
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296 return CRYPT_OK;
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297 #endif
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298 }
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299
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300 #endif
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301
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302
209
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303
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304 /* $Source: /cvs/libtom/libtomcrypt/src/hashes/md4.c,v $ */
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305 /* $Revision: 1.5 $ */
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306 /* $Date: 2005/05/23 02:42:07 $ */