Mercurial > trustbridge > nss-cmake-static
annotate nss/lib/freebl/alg2268.c @ 4:b513267f632f tip
Build DBM module
author | Andre Heinecke <andre.heinecke@intevation.de> |
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date | Tue, 05 Aug 2014 18:58:03 +0200 |
parents | 1e5118fa0cb1 |
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rev | line source |
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0
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1 /* |
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2 * alg2268.c - implementation of the algorithm in RFC 2268 |
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3 * |
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4 * This Source Code Form is subject to the terms of the Mozilla Public |
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5 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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7 |
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8 #ifdef FREEBL_NO_DEPEND |
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9 #include "stubs.h" |
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10 #endif |
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11 |
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12 #include "blapi.h" |
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13 #include "secerr.h" |
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14 #ifdef XP_UNIX_XXX |
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15 #include <stddef.h> /* for ptrdiff_t */ |
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16 #endif |
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17 |
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18 /* |
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19 ** RC2 symmetric block cypher |
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20 */ |
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21 |
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22 typedef SECStatus (rc2Func)(RC2Context *cx, unsigned char *output, |
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23 const unsigned char *input, unsigned int inputLen); |
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24 |
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25 /* forward declarations */ |
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26 static rc2Func rc2_EncryptECB; |
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27 static rc2Func rc2_DecryptECB; |
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28 static rc2Func rc2_EncryptCBC; |
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29 static rc2Func rc2_DecryptCBC; |
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30 |
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31 typedef union { |
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32 PRUint32 l[2]; |
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33 PRUint16 s[4]; |
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34 PRUint8 b[8]; |
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35 } RC2Block; |
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36 |
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37 struct RC2ContextStr { |
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38 union { |
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39 PRUint8 Kb[128]; |
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40 PRUint16 Kw[64]; |
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41 } u; |
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42 RC2Block iv; |
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43 rc2Func *enc; |
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44 rc2Func *dec; |
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45 }; |
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46 |
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47 #define B u.Kb |
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48 #define K u.Kw |
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49 #define BYTESWAP(x) ((x) << 8 | (x) >> 8) |
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50 #define SWAPK(i) cx->K[i] = (tmpS = cx->K[i], BYTESWAP(tmpS)) |
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51 #define RC2_BLOCK_SIZE 8 |
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52 |
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53 #define LOAD_HARD(R) \ |
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54 R[0] = (PRUint16)input[1] << 8 | input[0]; \ |
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55 R[1] = (PRUint16)input[3] << 8 | input[2]; \ |
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56 R[2] = (PRUint16)input[5] << 8 | input[4]; \ |
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57 R[3] = (PRUint16)input[7] << 8 | input[6]; |
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58 #define LOAD_EASY(R) \ |
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59 R[0] = ((PRUint16 *)input)[0]; \ |
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60 R[1] = ((PRUint16 *)input)[1]; \ |
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61 R[2] = ((PRUint16 *)input)[2]; \ |
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62 R[3] = ((PRUint16 *)input)[3]; |
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63 #define STORE_HARD(R) \ |
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64 output[0] = (PRUint8)(R[0]); output[1] = (PRUint8)(R[0] >> 8); \ |
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65 output[2] = (PRUint8)(R[1]); output[3] = (PRUint8)(R[1] >> 8); \ |
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66 output[4] = (PRUint8)(R[2]); output[5] = (PRUint8)(R[2] >> 8); \ |
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67 output[6] = (PRUint8)(R[3]); output[7] = (PRUint8)(R[3] >> 8); |
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68 #define STORE_EASY(R) \ |
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69 ((PRUint16 *)output)[0] = R[0]; \ |
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70 ((PRUint16 *)output)[1] = R[1]; \ |
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71 ((PRUint16 *)output)[2] = R[2]; \ |
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72 ((PRUint16 *)output)[3] = R[3]; |
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73 |
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74 #if defined (NSS_X86_OR_X64) |
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75 #define LOAD(R) LOAD_EASY(R) |
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76 #define STORE(R) STORE_EASY(R) |
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77 #elif !defined(IS_LITTLE_ENDIAN) |
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78 #define LOAD(R) LOAD_HARD(R) |
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79 #define STORE(R) STORE_HARD(R) |
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80 #else |
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81 #define LOAD(R) if ((ptrdiff_t)input & 1) { LOAD_HARD(R) } else { LOAD_EASY(R) } |
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82 #define STORE(R) if ((ptrdiff_t)input & 1) { STORE_HARD(R) } else { STORE_EASY(R) } |
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83 #endif |
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84 |
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85 static const PRUint8 S[256] = { |
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86 0331,0170,0371,0304,0031,0335,0265,0355,0050,0351,0375,0171,0112,0240,0330,0235, |
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87 0306,0176,0067,0203,0053,0166,0123,0216,0142,0114,0144,0210,0104,0213,0373,0242, |
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88 0027,0232,0131,0365,0207,0263,0117,0023,0141,0105,0155,0215,0011,0201,0175,0062, |
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89 0275,0217,0100,0353,0206,0267,0173,0013,0360,0225,0041,0042,0134,0153,0116,0202, |
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90 0124,0326,0145,0223,0316,0140,0262,0034,0163,0126,0300,0024,0247,0214,0361,0334, |
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91 0022,0165,0312,0037,0073,0276,0344,0321,0102,0075,0324,0060,0243,0074,0266,0046, |
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92 0157,0277,0016,0332,0106,0151,0007,0127,0047,0362,0035,0233,0274,0224,0103,0003, |
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93 0370,0021,0307,0366,0220,0357,0076,0347,0006,0303,0325,0057,0310,0146,0036,0327, |
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94 0010,0350,0352,0336,0200,0122,0356,0367,0204,0252,0162,0254,0065,0115,0152,0052, |
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95 0226,0032,0322,0161,0132,0025,0111,0164,0113,0237,0320,0136,0004,0030,0244,0354, |
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96 0302,0340,0101,0156,0017,0121,0313,0314,0044,0221,0257,0120,0241,0364,0160,0071, |
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97 0231,0174,0072,0205,0043,0270,0264,0172,0374,0002,0066,0133,0045,0125,0227,0061, |
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98 0055,0135,0372,0230,0343,0212,0222,0256,0005,0337,0051,0020,0147,0154,0272,0311, |
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99 0323,0000,0346,0317,0341,0236,0250,0054,0143,0026,0001,0077,0130,0342,0211,0251, |
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100 0015,0070,0064,0033,0253,0063,0377,0260,0273,0110,0014,0137,0271,0261,0315,0056, |
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101 0305,0363,0333,0107,0345,0245,0234,0167,0012,0246,0040,0150,0376,0177,0301,0255 |
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102 }; |
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103 |
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104 RC2Context * RC2_AllocateContext(void) |
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105 { |
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106 return PORT_ZNew(RC2Context); |
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107 } |
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108 SECStatus |
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109 RC2_InitContext(RC2Context *cx, const unsigned char *key, unsigned int len, |
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110 const unsigned char *input, int mode, unsigned int efLen8, |
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111 unsigned int unused) |
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112 { |
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113 PRUint8 *L,*L2; |
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114 int i; |
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115 #if !defined(IS_LITTLE_ENDIAN) |
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116 PRUint16 tmpS; |
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117 #endif |
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118 PRUint8 tmpB; |
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119 |
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120 if (!key || !cx || !len || len > (sizeof cx->B) || |
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121 efLen8 > (sizeof cx->B)) { |
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122 PORT_SetError(SEC_ERROR_INVALID_ARGS); |
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123 return SECFailure; |
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124 } |
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125 if (mode == NSS_RC2) { |
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126 /* groovy */ |
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127 } else if (mode == NSS_RC2_CBC) { |
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128 if (!input) { |
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129 PORT_SetError(SEC_ERROR_INVALID_ARGS); |
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130 return SECFailure; |
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131 } |
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132 } else { |
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133 PORT_SetError(SEC_ERROR_INVALID_ARGS); |
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134 return SECFailure; |
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135 } |
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136 |
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137 if (mode == NSS_RC2_CBC) { |
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138 cx->enc = & rc2_EncryptCBC; |
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139 cx->dec = & rc2_DecryptCBC; |
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140 LOAD(cx->iv.s); |
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141 } else { |
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142 cx->enc = & rc2_EncryptECB; |
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143 cx->dec = & rc2_DecryptECB; |
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144 } |
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145 |
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146 /* Step 0. Copy key into table. */ |
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147 memcpy(cx->B, key, len); |
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148 |
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149 /* Step 1. Compute all values to the right of the key. */ |
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150 L2 = cx->B; |
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151 L = L2 + len; |
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152 tmpB = L[-1]; |
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153 for (i = (sizeof cx->B) - len; i > 0; --i) { |
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154 *L++ = tmpB = S[ (PRUint8)(tmpB + *L2++) ]; |
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155 } |
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156 |
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157 /* step 2. Adjust left most byte of effective key. */ |
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158 i = (sizeof cx->B) - efLen8; |
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159 L = cx->B + i; |
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160 *L = tmpB = S[*L]; /* mask is always 0xff */ |
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161 |
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162 /* step 3. Recompute all values to the left of effective key. */ |
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163 L2 = --L + efLen8; |
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164 while(L >= cx->B) { |
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165 *L-- = tmpB = S[ tmpB ^ *L2-- ]; |
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166 } |
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167 |
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168 #if !defined(IS_LITTLE_ENDIAN) |
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169 for (i = 63; i >= 0; --i) { |
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170 SWAPK(i); /* candidate for unrolling */ |
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171 } |
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172 #endif |
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173 return SECSuccess; |
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174 } |
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175 |
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176 /* |
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177 ** Create a new RC2 context suitable for RC2 encryption/decryption. |
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178 ** "key" raw key data |
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179 ** "len" the number of bytes of key data |
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180 ** "iv" is the CBC initialization vector (if mode is NSS_RC2_CBC) |
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181 ** "mode" one of NSS_RC2 or NSS_RC2_CBC |
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182 ** "effectiveKeyLen" in bytes, not bits. |
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183 ** |
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184 ** When mode is set to NSS_RC2_CBC the RC2 cipher is run in "cipher block |
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185 ** chaining" mode. |
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186 */ |
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187 RC2Context * |
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188 RC2_CreateContext(const unsigned char *key, unsigned int len, |
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189 const unsigned char *iv, int mode, unsigned efLen8) |
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190 { |
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191 RC2Context *cx = PORT_ZNew(RC2Context); |
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192 if (cx) { |
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193 SECStatus rv = RC2_InitContext(cx, key, len, iv, mode, efLen8, 0); |
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194 if (rv != SECSuccess) { |
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195 RC2_DestroyContext(cx, PR_TRUE); |
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196 cx = NULL; |
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197 } |
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198 } |
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199 return cx; |
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200 } |
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201 |
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202 /* |
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203 ** Destroy an RC2 encryption/decryption context. |
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204 ** "cx" the context |
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205 ** "freeit" if PR_TRUE then free the object as well as its sub-objects |
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206 */ |
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207 void |
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208 RC2_DestroyContext(RC2Context *cx, PRBool freeit) |
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209 { |
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210 if (cx) { |
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211 memset(cx, 0, sizeof *cx); |
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212 if (freeit) { |
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213 PORT_Free(cx); |
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214 } |
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215 } |
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216 } |
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217 |
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218 #define ROL(x,k) (x << k | x >> (16-k)) |
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219 #define MIX(j) \ |
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220 R0 = R0 + cx->K[ 4*j+0] + (R3 & R2) + (~R3 & R1); R0 = ROL(R0,1);\ |
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221 R1 = R1 + cx->K[ 4*j+1] + (R0 & R3) + (~R0 & R2); R1 = ROL(R1,2);\ |
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222 R2 = R2 + cx->K[ 4*j+2] + (R1 & R0) + (~R1 & R3); R2 = ROL(R2,3);\ |
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223 R3 = R3 + cx->K[ 4*j+3] + (R2 & R1) + (~R2 & R0); R3 = ROL(R3,5) |
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224 #define MASH \ |
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225 R0 = R0 + cx->K[R3 & 63];\ |
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226 R1 = R1 + cx->K[R0 & 63];\ |
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227 R2 = R2 + cx->K[R1 & 63];\ |
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228 R3 = R3 + cx->K[R2 & 63] |
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229 |
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230 /* Encrypt one block */ |
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231 static void |
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232 rc2_Encrypt1Block(RC2Context *cx, RC2Block *output, RC2Block *input) |
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233 { |
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234 register PRUint16 R0, R1, R2, R3; |
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235 |
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236 /* step 1. Initialize input. */ |
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237 R0 = input->s[0]; |
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238 R1 = input->s[1]; |
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239 R2 = input->s[2]; |
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240 R3 = input->s[3]; |
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241 |
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242 /* step 2. Expand Key (already done, in context) */ |
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243 /* step 3. j = 0 */ |
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244 /* step 4. Perform 5 mixing rounds. */ |
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245 |
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246 MIX(0); |
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247 MIX(1); |
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248 MIX(2); |
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249 MIX(3); |
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250 MIX(4); |
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251 |
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252 /* step 5. Perform 1 mashing round. */ |
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253 MASH; |
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254 |
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255 /* step 6. Perform 6 mixing rounds. */ |
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256 |
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257 MIX(5); |
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258 MIX(6); |
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259 MIX(7); |
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260 MIX(8); |
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261 MIX(9); |
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262 MIX(10); |
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263 |
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264 /* step 7. Perform 1 mashing round. */ |
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265 MASH; |
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266 |
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267 /* step 8. Perform 5 mixing rounds. */ |
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268 |
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269 MIX(11); |
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270 MIX(12); |
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271 MIX(13); |
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272 MIX(14); |
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273 MIX(15); |
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274 |
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275 /* output results */ |
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276 output->s[0] = R0; |
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277 output->s[1] = R1; |
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278 output->s[2] = R2; |
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279 output->s[3] = R3; |
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280 } |
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281 |
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282 #define ROR(x,k) (x >> k | x << (16-k)) |
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283 #define R_MIX(j) \ |
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284 R3 = ROR(R3,5); R3 = R3 - cx->K[ 4*j+3] - (R2 & R1) - (~R2 & R0); \ |
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285 R2 = ROR(R2,3); R2 = R2 - cx->K[ 4*j+2] - (R1 & R0) - (~R1 & R3); \ |
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286 R1 = ROR(R1,2); R1 = R1 - cx->K[ 4*j+1] - (R0 & R3) - (~R0 & R2); \ |
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287 R0 = ROR(R0,1); R0 = R0 - cx->K[ 4*j+0] - (R3 & R2) - (~R3 & R1) |
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288 #define R_MASH \ |
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289 R3 = R3 - cx->K[R2 & 63];\ |
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290 R2 = R2 - cx->K[R1 & 63];\ |
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291 R1 = R1 - cx->K[R0 & 63];\ |
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292 R0 = R0 - cx->K[R3 & 63] |
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293 |
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294 /* Encrypt one block */ |
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295 static void |
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296 rc2_Decrypt1Block(RC2Context *cx, RC2Block *output, RC2Block *input) |
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297 { |
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298 register PRUint16 R0, R1, R2, R3; |
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299 |
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300 /* step 1. Initialize input. */ |
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301 R0 = input->s[0]; |
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302 R1 = input->s[1]; |
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303 R2 = input->s[2]; |
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304 R3 = input->s[3]; |
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305 |
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306 /* step 2. Expand Key (already done, in context) */ |
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307 /* step 3. j = 63 */ |
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308 /* step 4. Perform 5 r_mixing rounds. */ |
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309 R_MIX(15); |
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310 R_MIX(14); |
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311 R_MIX(13); |
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312 R_MIX(12); |
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313 R_MIX(11); |
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314 |
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315 /* step 5. Perform 1 r_mashing round. */ |
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316 R_MASH; |
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317 |
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318 /* step 6. Perform 6 r_mixing rounds. */ |
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319 R_MIX(10); |
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320 R_MIX(9); |
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321 R_MIX(8); |
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322 R_MIX(7); |
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323 R_MIX(6); |
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324 R_MIX(5); |
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325 |
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326 /* step 7. Perform 1 r_mashing round. */ |
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327 R_MASH; |
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328 |
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329 /* step 8. Perform 5 r_mixing rounds. */ |
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330 R_MIX(4); |
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331 R_MIX(3); |
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332 R_MIX(2); |
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333 R_MIX(1); |
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334 R_MIX(0); |
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335 |
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336 /* output results */ |
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337 output->s[0] = R0; |
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338 output->s[1] = R1; |
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|
339 output->s[2] = R2; |
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This is NSS with a Cmake Buildsyste
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340 output->s[3] = R3; |
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This is NSS with a Cmake Buildsyste
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|
341 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
342 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
343 static SECStatus |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
344 rc2_EncryptECB(RC2Context *cx, unsigned char *output, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
345 const unsigned char *input, unsigned int inputLen) |
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This is NSS with a Cmake Buildsyste
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|
346 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
347 RC2Block iBlock; |
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This is NSS with a Cmake Buildsyste
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|
348 |
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This is NSS with a Cmake Buildsyste
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|
349 while (inputLen > 0) { |
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This is NSS with a Cmake Buildsyste
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changeset
|
350 LOAD(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
351 rc2_Encrypt1Block(cx, &iBlock, &iBlock); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
352 STORE(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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353 output += RC2_BLOCK_SIZE; |
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This is NSS with a Cmake Buildsyste
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|
354 input += RC2_BLOCK_SIZE; |
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This is NSS with a Cmake Buildsyste
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|
355 inputLen -= RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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356 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
357 return SECSuccess; |
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This is NSS with a Cmake Buildsyste
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|
358 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
359 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
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|
360 static SECStatus |
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This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
361 rc2_DecryptECB(RC2Context *cx, unsigned char *output, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
362 const unsigned char *input, unsigned int inputLen) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
363 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
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|
364 RC2Block iBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
365 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
366 while (inputLen > 0) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
367 LOAD(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
368 rc2_Decrypt1Block(cx, &iBlock, &iBlock); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
369 STORE(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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370 output += RC2_BLOCK_SIZE; |
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This is NSS with a Cmake Buildsyste
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371 input += RC2_BLOCK_SIZE; |
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This is NSS with a Cmake Buildsyste
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|
372 inputLen -= RC2_BLOCK_SIZE; |
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This is NSS with a Cmake Buildsyste
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373 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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374 return SECSuccess; |
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This is NSS with a Cmake Buildsyste
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375 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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376 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
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|
377 static SECStatus |
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This is NSS with a Cmake Buildsyste
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378 rc2_EncryptCBC(RC2Context *cx, unsigned char *output, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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379 const unsigned char *input, unsigned int inputLen) |
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This is NSS with a Cmake Buildsyste
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|
380 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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|
381 RC2Block iBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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382 |
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This is NSS with a Cmake Buildsyste
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|
383 while (inputLen > 0) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
384 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
385 LOAD(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
386 iBlock.l[0] ^= cx->iv.l[0]; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
387 iBlock.l[1] ^= cx->iv.l[1]; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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|
388 rc2_Encrypt1Block(cx, &iBlock, &iBlock); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
diff
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389 cx->iv = iBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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390 STORE(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
391 output += RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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392 input += RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
393 inputLen -= RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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394 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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395 return SECSuccess; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
396 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
397 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
398 static SECStatus |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
399 rc2_DecryptCBC(RC2Context *cx, unsigned char *output, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
400 const unsigned char *input, unsigned int inputLen) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
401 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
402 RC2Block iBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
403 RC2Block oBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
404 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
405 while (inputLen > 0) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
406 LOAD(iBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
407 rc2_Decrypt1Block(cx, &oBlock, &iBlock); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
408 oBlock.l[0] ^= cx->iv.l[0]; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
409 oBlock.l[1] ^= cx->iv.l[1]; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
410 cx->iv = iBlock; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
411 STORE(oBlock.s) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
412 output += RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
413 input += RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
414 inputLen -= RC2_BLOCK_SIZE; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
415 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
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|
416 return SECSuccess; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
417 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
418 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
419 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
420 /* |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
421 ** Perform RC2 encryption. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
422 ** "cx" the context |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
423 ** "output" the output buffer to store the encrypted data. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
424 ** "outputLen" how much data is stored in "output". Set by the routine |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
425 ** after some data is stored in output. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
426 ** "maxOutputLen" the maximum amount of data that can ever be |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
427 ** stored in "output" |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
428 ** "input" the input data |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
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parents:
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changeset
|
429 ** "inputLen" the amount of input data |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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|
430 */ |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
431 SECStatus RC2_Encrypt(RC2Context *cx, unsigned char *output, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
432 unsigned int *outputLen, unsigned int maxOutputLen, |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
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changeset
|
433 const unsigned char *input, unsigned int inputLen) |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
434 { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
435 SECStatus rv = SECSuccess; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
436 if (inputLen) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
437 if (inputLen % RC2_BLOCK_SIZE) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
438 PORT_SetError(SEC_ERROR_INPUT_LEN); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
439 return SECFailure; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
440 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
441 if (maxOutputLen < inputLen) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
442 PORT_SetError(SEC_ERROR_OUTPUT_LEN); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
443 return SECFailure; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
444 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
445 rv = (*cx->enc)(cx, output, input, inputLen); |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
446 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
447 if (rv == SECSuccess) { |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
448 *outputLen = inputLen; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
449 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
450 return rv; |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
451 } |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
452 |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
453 /* |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
454 ** Perform RC2 decryption. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
455 ** "cx" the context |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
456 ** "output" the output buffer to store the decrypted data. |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
|
457 ** "outputLen" how much data is stored in "output". Set by the routine |
1e5118fa0cb1
This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff
changeset
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458 ** after some data is stored in output. |
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459 ** "maxOutputLen" the maximum amount of data that can ever be |
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460 ** stored in "output" |
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461 ** "input" the input data |
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462 ** "inputLen" the amount of input data |
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463 */ |
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464 SECStatus RC2_Decrypt(RC2Context *cx, unsigned char *output, |
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465 unsigned int *outputLen, unsigned int maxOutputLen, |
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466 const unsigned char *input, unsigned int inputLen) |
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467 { |
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468 SECStatus rv = SECSuccess; |
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469 if (inputLen) { |
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470 if (inputLen % RC2_BLOCK_SIZE) { |
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471 PORT_SetError(SEC_ERROR_INPUT_LEN); |
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472 return SECFailure; |
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473 } |
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474 if (maxOutputLen < inputLen) { |
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475 PORT_SetError(SEC_ERROR_OUTPUT_LEN); |
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476 return SECFailure; |
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477 } |
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478 rv = (*cx->dec)(cx, output, input, inputLen); |
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479 } |
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480 if (rv == SECSuccess) { |
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481 *outputLen = inputLen; |
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482 } |
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483 return rv; |
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484 } |
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485 |