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annotate AES/unit_test.cpp @ 1:0b3630a29ad8

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Initial version based on previous repository. Project was ported to QT6 and in now cmake based.
author Ideenmodellierer <tiefenrauscher@web.de>
date Thu, 27 Nov 2025 18:40:28 +0100
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1 ////////////////////////////////////////////////////////////////////////
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2 /// \file AES/unit_test.cpp
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3 /// \brief Test AES block mode, and CFB mode.
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4 /// \author (c) jD Gascuel
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5 ///
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6 /// $Id$
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7 ////////////////////////////////////////////////////////////////////////
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8 // File History:
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9 // 2015-03-14 [jDG] Creation.
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10
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11 #include "Rijndael.h"
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12 #include "gtest/gtest.h"
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13
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14 #include <set>
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15
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16 /// Vectors from http://www.inconteam.com/software-development/41-encryption/55-aes-test-vectors#aes-ecb-128
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17
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18 static const Rijndael::Block plain[4] = {
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19 {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a},
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20 {0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51},
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21 {0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef},
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22 {0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10}
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23 };
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24
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25 static const Rijndael::ECB<128>::Key key128 = {
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26 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c
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27 };
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28
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29 static const Rijndael::Block cipher128[4] = {
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30 {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97},
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31 {0xf5, 0xd3, 0xd5, 0x85, 0x03, 0xb9, 0x69, 0x9d, 0xe7, 0x85, 0x89, 0x5a, 0x96, 0xfd, 0xba, 0xaf},
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32 {0x43, 0xb1, 0xcd, 0x7f, 0x59, 0x8e, 0xce, 0x23, 0x88, 0x1b, 0x00, 0xe3, 0xed, 0x03, 0x06, 0x88},
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33 {0x7b, 0x0c, 0x78, 0x5e, 0x27, 0xe8, 0xad, 0x3f, 0x82, 0x23, 0x20, 0x71, 0x04, 0x72, 0x5d, 0xd4}
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34 };
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35
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36 static const Rijndael::ECB<256>::Key key256 = {
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37 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
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38 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4
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39 };
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40
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41 static const Rijndael::Block cipher256[4] = {
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42 {0xf3, 0xee, 0xd1, 0xbd, 0xb5, 0xd2, 0xa0, 0x3c, 0x06, 0x4b, 0x5a, 0x7e, 0x3d, 0xb1, 0x81, 0xf8},
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43 {0x59, 0x1c, 0xcb, 0x10, 0xd4, 0x10, 0xed, 0x26, 0xdc, 0x5b, 0xa7, 0x4a, 0x31, 0x36, 0x28, 0x70},
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44 {0xb6, 0xed, 0x21, 0xb9, 0x9c, 0xa6, 0xf4, 0xf9, 0xf1, 0x53, 0xe7, 0xb1, 0xbe, 0xaf, 0xed, 0x1d},
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45 {0x23, 0x30, 0x4b, 0x7a, 0x39, 0xf9, 0xf3, 0xff, 0x06, 0x7d, 0x8d, 0x8f, 0x9e, 0x24, 0xec, 0xc7}
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46 };
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47
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48 //////////////////////////////////////////////////////////////////////////////
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49
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50 static const Rijndael::Block IV[4] = {
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51 {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f},
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52 {0x3B, 0x3F, 0xD9, 0x2E, 0xB7, 0x2D, 0xAD, 0x20, 0x33, 0x34, 0x49, 0xF8, 0xE8, 0x3C, 0xFB, 0x4A},
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53 {0xC8, 0xA6, 0x45, 0x37, 0xA0, 0xB3, 0xA9, 0x3F, 0xCD, 0xE3, 0xCD, 0xAD, 0x9F, 0x1C, 0xE5, 0x8B},
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54 {0x26, 0x75, 0x1F, 0x67, 0xA3, 0xCB, 0xB1, 0x40, 0xB1, 0x80, 0x8C, 0xF1, 0x87, 0xA4, 0xF4, 0xDF}
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55 };
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56
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57 static const Rijndael::Block cfb_cipher128[4] = {
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58 {0x3b, 0x3f, 0xd9, 0x2e, 0xb7, 0x2d, 0xad, 0x20, 0x33, 0x34, 0x49, 0xf8, 0xe8, 0x3c, 0xfb, 0x4a},
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59 {0xc8, 0xa6, 0x45, 0x37, 0xa0, 0xb3, 0xa9, 0x3f, 0xcd, 0xe3, 0xcd, 0xad, 0x9f, 0x1c, 0xe5, 0x8b},
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60 {0x26, 0x75, 0x1f, 0x67, 0xa3, 0xcb, 0xb1, 0x40, 0xb1, 0x80, 0x8c, 0xf1, 0x87, 0xa4, 0xf4, 0xdf},
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61 {0xc0, 0x4b, 0x05, 0x35, 0x7c, 0x5d, 0x1c, 0x0e, 0xea, 0xc4, 0xc6, 0x6f, 0x9f, 0xf7, 0xf2, 0xe6}
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62 };
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63
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64 //////////////////////////////////////////////////////////////////////////////
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65
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66 TEST(Rijndael, ECB_PRNG) {
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67 Rijndael::ECB<128> enc;
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68 enc.setupEncrypt(key128);
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69
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70 const int samples = 100*1000;
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71 std::set<Rijndael::Word32> dict;
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72
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73 int collisions = 0;
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74 for(int i=0; i<samples; ++i) {
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75 Rijndael::Word32 x = enc.get_random();
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76
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77 // Should not hit the zero value:
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78 ASSERT_NE(0, x);
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79
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80 // Should scarcely produce the same value twice
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81 if(dict.find(x) != dict.end())
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82 ++collisions;
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83 else
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84 dict.insert(x);
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85 }
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86 // Observed: 250e-6
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87 ASSERT_LE(float(collisions)/float(samples), 500e-6f);
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88 }
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89
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90 //////////////////////////////////////////////////////////////////////////////
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91
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92 TEST(Rijndael, ECB_encrypt_128) {
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93 Rijndael::ECB<128> enc;
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94 enc.setupEncrypt(key128);
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95
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96 for(int test=0; test<4; ++test) {
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97 Rijndael::Block result = {0};
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98 enc.encrypt(plain[test], result);
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99 for(int c=0; c<16; ++c)
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100 EXPECT_EQ(cipher128[test][c], result[c])
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101 << "Test " << test << ": byte " << c;
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102 }
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103 }
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104
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105 //////////////////////////////////////////////////////////////////////////////
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106
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107 TEST(Rijndael, ECB_decrypt_128) {
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108 Rijndael::ECB<128> dec;
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109 dec.setupDecrypt(key128);
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110
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111 for(int test=0; test<4; ++test) {
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112 Rijndael::Block result = {0};
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113 dec.decrypt(cipher128[test], result);
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114 for(int c=0; c<16; ++c)
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115 EXPECT_EQ(plain[test][c], result[c])
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116 << "Test " << test << ": byte " << c;
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117 }
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118 }
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119
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120 //////////////////////////////////////////////////////////////////////////////
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121
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122 TEST(Rijndael, ECB_encrypt_256) {
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123 Rijndael::ECB<256> enc;
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124 enc.setupEncrypt(key256);
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125
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126 for(int test=0; test<4; ++test) {
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127 Rijndael::Block result = {0};
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128 enc.encrypt(plain[test], result);
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129 for(int c=0; c<16; ++c)
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130 ASSERT_EQ(cipher256[test][c], result[c])
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131 << "Test " << test << ": byte " << c;
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132 }
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133 }
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134
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135 //////////////////////////////////////////////////////////////////////////////
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136
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137 TEST(Rijndael, ECB_decrypt_256) {
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138 Rijndael::ECB<256> dec;
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139 dec.setupDecrypt(key256);
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140
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141 for(int test=0; test<4; ++test) {
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142 Rijndael::Block result = {0};
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143 dec.decrypt(cipher256[test], result);
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144 for(int c=0; c<16; ++c)
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145 ASSERT_EQ(plain[test][c], result[c])
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146 << "Test " << test << ": byte " << c;
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147 }
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148 }
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149
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150 //////////////////////////////////////////////////////////////////////////////
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151
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152 TEST(Rijndael, CFB_encrypt_128) {
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153 for(int test=0; test<4; ++test) {
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154 Rijndael::CFB<128> enc(key128, IV[test]);
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155
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156 Rijndael::Block result = {0};
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157 enc.encrypt(plain[test], result);
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158 for(int c=0; c<16; ++c)
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159 {
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160 ASSERT_EQ(cfb_cipher128[test][c], result[c])
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161 << "Test " << test << ": byte " << c;
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162 }
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163 }
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164 }
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165
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166 //////////////////////////////////////////////////////////////////////////////
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167
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168 TEST(Rijndael, CFB_decrypt_128) {
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169 for(int test=0; test<4; ++test) {
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170 Rijndael::CFB<128> dec(key128, IV[test]);
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171
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172 Rijndael::Block result = {0};
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173 dec.decrypt(cfb_cipher128[test], result);
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174 for(int c=0; c<16; ++c)
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175 {
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176 ASSERT_EQ(plain[test][c], result[c])
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177 << "Test " << test << ": byte " << c;
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178 }
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179 }
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180 }
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181
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182 //////////////////////////////////////////////////////////////////////////////
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183
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184 TEST(Rijndael, CFB_encrypt_128_chained) {
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185 Rijndael::CFB<128> enc(key128, IV[0]);
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186
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187 for(int test=0; test<4; ++test) {
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188 Rijndael::Block result = {0};
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189 enc.encrypt(plain[test], result);
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190 for(int c=0; c<16; ++c)
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191 {
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192 ASSERT_EQ(cfb_cipher128[test][c], result[c])
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193 << "Test " << test << ": byte " << c;
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194 }
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195 }
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196 }
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197
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198
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199 //////////////////////////////////////////////////////////////////////////////
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200
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201 TEST(Rijndael, CFB_decrypt_128_chained) {
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202 Rijndael::CFB<128> dec(key128, IV[0]);
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203
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204 for(int test=0; test<4; ++test) {
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205 Rijndael::Block result = {0};
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206 dec.decrypt(cfb_cipher128[test], result);
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207 for(int c=0; c<16; ++c)
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208 {
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209 ASSERT_EQ(plain[test][c], result[c])
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210 << "Test " << test << ": byte " << c;
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211 }
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212 }
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213 }
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214
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215 //////////////////////////////////////////////////////////////////////////////