1 | /*
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2 | * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include <openssl/ssl.h>
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11 | #include <openssl/evp.h>
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12 | #include "../ssl/ssl_local.h"
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13 | #include "../ssl/record/record_local.h"
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14 | #include "internal/nelem.h"
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15 | #include "testutil.h"
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16 |
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17 | /*
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18 | * Based on the test vectors provided in:
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19 | * https://tools.ietf.org/html/draft-ietf-tls-tls13-vectors-06
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20 | */
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21 |
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22 | typedef struct {
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23 | /*
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24 | * We split these into 3 chunks in order to work around the 509 character
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25 | * limit that the standard specifies for string literals
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26 | */
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27 | const char *plaintext[3];
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28 | const char *ciphertext[3];
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29 | const char *key;
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30 | const char *iv;
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31 | const char *seq;
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32 | } RECORD_DATA;
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33 |
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34 | /*
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35 | * Note 1: The plaintext values given here have an additional "16" or "17" byte
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36 | * added to the end when compared to the official vectors. The official vectors
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37 | * do not include the inner content type, but we require it.
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38 | *
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39 | * Note 2: These are the vectors for the "Simple 1-RTT Handshake"
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40 | */
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41 | static RECORD_DATA refdata[] = {
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42 | {
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43 | /*
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44 | * Server: EncryptedExtensions, Certificate, CertificateVerify and
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45 | * Finished
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46 | */
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47 | {
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48 | "080000240022000a00140012001d00170018001901000101010201030104001c"
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49 | "00024001000000000b0001b9000001b50001b0308201ac30820115a003020102"
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50 | "020102300d06092a864886f70d01010b0500300e310c300a0603550403130372"
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51 | "7361301e170d3136303733303031323335395a170d3236303733303031323335"
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52 | "395a300e310c300a0603550403130372736130819f300d06092a864886f70d01"
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53 | "0101050003818d0030818902818100b4bb498f8279303d980836399b36c6988c"
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54 | "0c68de55e1bdb826d3901a2461eafd2de49a91d015abbc9a95137ace6c1af19e",
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55 | "aa6af98c7ced43120998e187a80ee0ccb0524b1b018c3e0b63264d449a6d38e2"
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56 | "2a5fda430846748030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193eff0ab9a"
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57 | "8002c47428a6d35a8d88d79f7f1e3f0203010001a31a301830090603551d1304"
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58 | "023000300b0603551d0f0404030205a0300d06092a864886f70d01010b050003"
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59 | "81810085aad2a0e5b9276b908c65f73a7267170618a54c5f8a7b337d2df7a594"
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60 | "365417f2eae8f8a58c8f8172f9319cf36b7fd6c55b80f21a03015156726096fd"
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61 | "335e5e67f2dbf102702e608ccae6bec1fc63a42a99be5c3eb7107c3c54e9b9eb",
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62 | "2bd5203b1c3b84e0a8b2f759409ba3eac9d91d402dcc0cc8f8961229ac9187b4"
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63 | "2b4de100000f00008408040080754040d0ddab8cf0e2da2bc4995b868ad745c8"
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64 | "e1564e33cde17880a42392cc624aeef6b67bb3f0ae71d9d54a2309731d87dc59"
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65 | "f642d733be2eb27484ad8a8c8eb3516a7ac57f2625e2b5c0888a8541f4e734f7"
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66 | "3d054761df1dd02f0e3e9a33cfa10b6e3eb4ebf7ac053b01fdabbddfc54133bc"
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67 | "d24c8bbdceb223b2aa03452a2914000020ac86acbc9cd25a45b57ad5b64db15d"
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68 | "4405cf8c80e314583ebf3283ef9a99310c16"
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69 | },
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70 | {
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71 | "f10b26d8fcaf67b5b828f712122216a1cd14187465b77637cbcd78539128bb93"
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72 | "246dcca1af56f1eaa271666077455bc54965d85f05f9bd36d6996171eb536aff"
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73 | "613eeddc42bad5a2d2227c4606f1215f980e7afaf56bd3b85a51be130003101a"
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74 | "758d077b1c891d8e7a22947e5a229851fd42a9dd422608f868272abf92b3d43f"
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75 | "b46ac420259346067f66322fd708885680f4b4433c29116f2dfa529e09bba53c"
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76 | "7cd920121724809eaddcc84307ef46fc51a0b33d99d39db337fcd761ce0f2b02"
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77 | "dc73dedb6fddb77c4f8099bde93d5bee08bcf2131f29a2a37ff07949e8f8bcdd",
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78 | "3e8310b8bf8b3444c85aaf0d2aeb2d4f36fd14d5cb51fcebff418b3827136ab9"
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79 | "529e9a3d3f35e4c0ae749ea2dbc94982a1281d3e6daab719aa4460889321a008"
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80 | "bf10fa06ac0c61cc122cc90d5e22c0030c986ae84a33a0c47df174bcfbd50bf7"
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81 | "8ffdf24051ab423db63d5815db2f830040f30521131c98c66f16c362addce2fb"
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82 | "a0602cf0a7dddf22e8def7516cdfee95b4056cc9ad38c95352335421b5b1ffba"
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83 | "df75e5212fdad7a75f52a2801486a1eec3539580bee0e4b337cda6085ac9eccd"
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84 | "1a0f1a46cebfbb5cdfa3251ac28c3bc826148c6d8c1eb6a06f77f6ff632c6a83",
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85 | "e283e8f9df7c6dbabf1c6ea40629a85b43ab0c73d34f9d5072832a104eda3f75"
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86 | "f5d83da6e14822a18e14099d749eafd823ca2ac7542086501eca206ce7887920"
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87 | "008573757ce2f230a890782b99cc682377beee812756d04f9025135fb599d746"
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88 | "fefe7316c922ac265ca0d29021375adb63c1509c3e242dfb92b8dee891f7368c"
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89 | "4058399b8db9075f2dcc8216194e503b6652d87d2cb41f99adfdcc5be5ec7e1e"
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90 | "6326ac22d70bd3ba652827532d669aff005173597f8039c3ea4922d3ec757670"
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91 | "222f6ac29b93e90d7ad3f6dd96328e429cfcfd5cca22707fe2d86ad1dcb0be75"
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92 | "6e8e"
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93 | },
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94 | "c66cb1aec519df44c91e10995511ac8b",
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95 | "f7f6884c4981716c2d0d29a4",
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96 | "0000000000000000"
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97 | },
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98 | {
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99 | /* Client: Finished */
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100 | {
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101 | "14000020b9027a0204b972b52cdefa58950fa1580d68c9cb124dbe691a7178f2"
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102 | "5c554b2316", "", ""
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103 | },
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104 | {
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105 | "9539b4ae2f87fd8e616b295628ea953d9e3858db274970d19813ec136cae7d96"
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106 | "e0417775fcabd3d8858fdc60240912d218f5afb21c", "", ""
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107 | },
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108 | "2679a43e1d76784034ea1797d5ad2649",
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109 | "5482405290dd0d2f81c0d942",
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110 | "0000000000000000"
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111 | },
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112 | {
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113 | /* Server: NewSessionTicket */
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114 | {
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115 | "040000c90000001e2fd3992f02000000b2ff099f9676cdff8b0bf8825d000000"
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116 | "007905a9d28efeef4a47c6f9b06a0cecdb0070d920b898997c75b79636943ed4"
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117 | "2046a96142bd084a04acfa0c490f452d756dea02c0f927259f1f3231ac0d541a"
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118 | "769129b740ce38090842b828c27fd729f59737ba98aa7b42e043c5da28f8dca8"
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119 | "590b2df410d5134fd6c4cacad8b30370602afa35d265bf4d127976bb36dbda6a"
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120 | "626f0270e20eebc73d6fcae2b1a0da122ee9042f76be56ebf41aa469c3d2c9da"
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121 | "9197d80008002a00040000040016", "", ""
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122 | },
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123 | {
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124 | "3680c2b2109d25caa26c3b06eea9fdc5cb31613ba702176596da2e886bf6af93"
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125 | "507bd68161ad9cb4780653842e1041ecbf0088a65ac4ef438419dd1d95ddd9bd"
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126 | "2ad4484e7e167d0e6c008448ae58a0418713b6fc6c51e4bb23a537fb75a74f73"
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127 | "de31fe6aa0bc522515f8b25f8955428b5de5ac06762cec22b0aa78c94385ef8e"
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128 | "70fa24945b7c1f268510871689bbbbfaf2e7f4a19277024f95f1143ab12a31ec"
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129 | "63adb128cb390711fd6d06a498df3e98615d8eb102e23353b480efcca5e8e026"
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130 | "7a6d0fe2441f14c8c9664aefb2cfff6ae9e0442728b6a0940c1e824fda06",
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131 | "", ""
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132 |
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133 | },
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134 | "a688ebb5ac826d6f42d45c0cc44b9b7d",
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135 | "c1cad4425a438b5de714830a",
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136 | "0000000000000000"
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137 | },
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138 | {
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139 | /* Client: Application Data */
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140 | {
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141 | "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
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142 | "202122232425262728292a2b2c2d2e2f303117", "", ""
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143 | },
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144 | {
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145 | "8c3497da00ae023e53c01b4324b665404c1b49e78fe2bf4d17f6348ae8340551"
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146 | "e363a0cd05f2179c4fef5ad689b5cae0bae94adc63632e571fb79aa91544c639"
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147 | "4d28a1", "", ""
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148 |
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149 | },
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150 | "88b96ad686c84be55ace18a59cce5c87",
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151 | "b99dc58cd5ff5ab082fdad19",
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152 | "0000000000000000"
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153 | },
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154 |
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155 |
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156 | {
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157 | /* Server: Application Data */
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158 | {
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159 | "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
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160 | "202122232425262728292a2b2c2d2e2f303117", "", ""
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161 | },
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162 | {
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163 | "f65f49fd2df6cd2347c3d30166e3cfddb6308a5906c076112c6a37ff1dbd406b"
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164 | "5813c0abd734883017a6b2833186b13c14da5d75f33d8760789994e27d82043a"
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165 | "b88d65", "", ""
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166 | },
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167 | "a688ebb5ac826d6f42d45c0cc44b9b7d",
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168 | "c1cad4425a438b5de714830a",
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169 | "0000000000000001"
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170 | },
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171 | {
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172 | /* Client: CloseNotify */
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173 | {
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174 | "010015", "", ""
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175 | },
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176 | {
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177 | "2c2148163d7938a35f6acf2a6606f8cbd1d9f2", "", ""
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178 | },
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179 | "88b96ad686c84be55ace18a59cce5c87",
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180 | "b99dc58cd5ff5ab082fdad19",
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181 | "0000000000000001"
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182 | },
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183 | {
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184 | /* Server: CloseNotify */
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185 | {
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186 | "010015", "", ""
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187 | },
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188 | {
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189 | "f8141ebdb5eda511e0bce639a56ff9ea825a21", "", ""
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190 |
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191 | },
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192 | "a688ebb5ac826d6f42d45c0cc44b9b7d",
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193 | "c1cad4425a438b5de714830a",
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194 | "0000000000000002"
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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 | * Same thing as OPENSSL_hexstr2buf() but enables us to pass the string in
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200 | * 3 chunks
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201 | */
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202 | static unsigned char *multihexstr2buf(const char *str[3], size_t *len)
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203 | {
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204 | size_t outer, inner, curr = 0;
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205 | unsigned char *outbuf;
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206 | size_t totlen = 0;
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207 |
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208 | /* Check lengths of all input strings are even */
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209 | for (outer = 0; outer < 3; outer++) {
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210 | totlen += strlen(str[outer]);
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211 | if ((totlen & 1) != 0)
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212 | return NULL;
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213 | }
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214 |
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215 | totlen /= 2;
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216 | outbuf = OPENSSL_malloc(totlen);
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217 | if (outbuf == NULL)
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218 | return NULL;
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219 |
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220 | for (outer = 0; outer < 3; outer++) {
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221 | for (inner = 0; str[outer][inner] != 0; inner += 2) {
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222 | int hi, lo;
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223 |
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224 | hi = OPENSSL_hexchar2int(str[outer][inner]);
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225 | lo = OPENSSL_hexchar2int(str[outer][inner + 1]);
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226 |
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227 | if (hi < 0 || lo < 0) {
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228 | OPENSSL_free(outbuf);
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229 | return NULL;
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230 | }
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231 | outbuf[curr++] = (hi << 4) | lo;
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232 | }
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233 | }
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234 |
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235 | *len = totlen;
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236 | return outbuf;
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237 | }
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238 |
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239 | static int load_record(SSL3_RECORD *rec, RECORD_DATA *recd, unsigned char **key,
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240 | unsigned char *iv, size_t ivlen, unsigned char *seq)
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241 | {
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242 | unsigned char *pt = NULL, *sq = NULL, *ivtmp = NULL;
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243 | size_t ptlen;
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244 |
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245 | *key = OPENSSL_hexstr2buf(recd->key, NULL);
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246 | ivtmp = OPENSSL_hexstr2buf(recd->iv, NULL);
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247 | sq = OPENSSL_hexstr2buf(recd->seq, NULL);
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248 | pt = multihexstr2buf(recd->plaintext, &ptlen);
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249 |
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250 | if (*key == NULL || ivtmp == NULL || sq == NULL || pt == NULL)
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251 | goto err;
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252 |
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253 | rec->data = rec->input = OPENSSL_malloc(ptlen + EVP_GCM_TLS_TAG_LEN);
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254 |
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255 | if (rec->data == NULL)
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256 | goto err;
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257 |
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258 | rec->length = ptlen;
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259 | memcpy(rec->data, pt, ptlen);
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260 | OPENSSL_free(pt);
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261 | memcpy(seq, sq, SEQ_NUM_SIZE);
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262 | OPENSSL_free(sq);
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263 | memcpy(iv, ivtmp, ivlen);
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264 | OPENSSL_free(ivtmp);
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265 |
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266 | return 1;
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267 | err:
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268 | OPENSSL_free(*key);
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269 | *key = NULL;
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270 | OPENSSL_free(ivtmp);
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271 | OPENSSL_free(sq);
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272 | OPENSSL_free(pt);
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273 | return 0;
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274 | }
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275 |
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276 | static int test_record(SSL3_RECORD *rec, RECORD_DATA *recd, int enc)
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277 | {
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278 | int ret = 0;
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279 | unsigned char *refd;
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280 | size_t refdatalen = 0;
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281 |
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282 | if (enc)
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283 | refd = multihexstr2buf(recd->ciphertext, &refdatalen);
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284 | else
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285 | refd = multihexstr2buf(recd->plaintext, &refdatalen);
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286 |
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287 | if (!TEST_ptr(refd)) {
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288 | TEST_info("Failed to get reference data");
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289 | goto err;
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290 | }
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291 |
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292 | if (!TEST_mem_eq(rec->data, rec->length, refd, refdatalen))
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293 | goto err;
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294 |
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295 | ret = 1;
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296 |
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297 | err:
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298 | OPENSSL_free(refd);
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299 | return ret;
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300 | }
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301 |
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302 | #define TLS13_AES_128_GCM_SHA256_BYTES ((const unsigned char *)"\x13\x01")
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303 |
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304 | static int test_tls13_encryption(void)
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305 | {
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306 | SSL_CTX *ctx = NULL;
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307 | SSL *s = NULL;
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308 | SSL3_RECORD rec;
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309 | unsigned char *key = NULL, *iv = NULL, *seq = NULL;
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310 | const EVP_CIPHER *ciph = EVP_aes_128_gcm();
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311 | int ret = 0;
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312 | size_t ivlen, ctr;
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313 |
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314 | /*
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315 | * Encrypted TLSv1.3 records always have an outer content type of
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316 | * application data, and a record version of TLSv1.2.
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317 | */
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318 | rec.data = NULL;
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319 | rec.type = SSL3_RT_APPLICATION_DATA;
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320 | rec.rec_version = TLS1_2_VERSION;
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321 |
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322 | ctx = SSL_CTX_new(TLS_method());
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323 | if (!TEST_ptr(ctx)) {
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324 | TEST_info("Failed creating SSL_CTX");
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325 | goto err;
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326 | }
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327 |
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328 | s = SSL_new(ctx);
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329 | if (!TEST_ptr(s)) {
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330 | TEST_info("Failed creating SSL");
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331 | goto err;
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332 | }
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333 |
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334 | s->enc_read_ctx = EVP_CIPHER_CTX_new();
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335 | if (!TEST_ptr(s->enc_read_ctx))
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336 | goto err;
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337 |
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338 | s->enc_write_ctx = EVP_CIPHER_CTX_new();
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339 | if (!TEST_ptr(s->enc_write_ctx))
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340 | goto err;
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341 |
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342 | s->s3.tmp.new_cipher = SSL_CIPHER_find(s, TLS13_AES_128_GCM_SHA256_BYTES);
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343 | if (!TEST_ptr(s->s3.tmp.new_cipher)) {
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344 | TEST_info("Failed to find cipher");
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345 | goto err;
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346 | }
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347 |
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348 | for (ctr = 0; ctr < OSSL_NELEM(refdata); ctr++) {
|
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349 | /* Load the record */
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350 | ivlen = EVP_CIPHER_get_iv_length(ciph);
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351 | if (!load_record(&rec, &refdata[ctr], &key, s->read_iv, ivlen,
|
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352 | RECORD_LAYER_get_read_sequence(&s->rlayer))) {
|
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353 | TEST_error("Failed loading key into EVP_CIPHER_CTX");
|
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354 | goto err;
|
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355 | }
|
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356 |
|
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357 | /* Set up the read/write sequences */
|
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358 | memcpy(RECORD_LAYER_get_write_sequence(&s->rlayer),
|
---|
359 | RECORD_LAYER_get_read_sequence(&s->rlayer), SEQ_NUM_SIZE);
|
---|
360 | memcpy(s->write_iv, s->read_iv, ivlen);
|
---|
361 |
|
---|
362 | /* Load the key into the EVP_CIPHER_CTXs */
|
---|
363 | if (EVP_CipherInit_ex(s->enc_write_ctx, ciph, NULL, key, NULL, 1) <= 0
|
---|
364 | || EVP_CipherInit_ex(s->enc_read_ctx, ciph, NULL, key, NULL, 0)
|
---|
365 | <= 0) {
|
---|
366 | TEST_error("Failed loading key into EVP_CIPHER_CTX\n");
|
---|
367 | goto err;
|
---|
368 | }
|
---|
369 |
|
---|
370 | /* Encrypt it */
|
---|
371 | if (!TEST_size_t_eq(tls13_enc(s, &rec, 1, 1, NULL, 0), 1)) {
|
---|
372 | TEST_info("Failed to encrypt record %zu", ctr);
|
---|
373 | goto err;
|
---|
374 | }
|
---|
375 | if (!TEST_true(test_record(&rec, &refdata[ctr], 1))) {
|
---|
376 | TEST_info("Record %zu encryption test failed", ctr);
|
---|
377 | goto err;
|
---|
378 | }
|
---|
379 |
|
---|
380 | /* Decrypt it */
|
---|
381 | if (!TEST_int_eq(tls13_enc(s, &rec, 1, 0, NULL, 0), 1)) {
|
---|
382 | TEST_info("Failed to decrypt record %zu", ctr);
|
---|
383 | goto err;
|
---|
384 | }
|
---|
385 | if (!TEST_true(test_record(&rec, &refdata[ctr], 0))) {
|
---|
386 | TEST_info("Record %zu decryption test failed", ctr);
|
---|
387 | goto err;
|
---|
388 | }
|
---|
389 |
|
---|
390 | OPENSSL_free(rec.data);
|
---|
391 | OPENSSL_free(key);
|
---|
392 | OPENSSL_free(iv);
|
---|
393 | OPENSSL_free(seq);
|
---|
394 | rec.data = NULL;
|
---|
395 | key = NULL;
|
---|
396 | iv = NULL;
|
---|
397 | seq = NULL;
|
---|
398 | }
|
---|
399 |
|
---|
400 | TEST_note("PASS: %zu records tested", ctr);
|
---|
401 | ret = 1;
|
---|
402 |
|
---|
403 | err:
|
---|
404 | OPENSSL_free(rec.data);
|
---|
405 | OPENSSL_free(key);
|
---|
406 | OPENSSL_free(iv);
|
---|
407 | OPENSSL_free(seq);
|
---|
408 | SSL_free(s);
|
---|
409 | SSL_CTX_free(ctx);
|
---|
410 | return ret;
|
---|
411 | }
|
---|
412 |
|
---|
413 | int setup_tests(void)
|
---|
414 | {
|
---|
415 | ADD_TEST(test_tls13_encryption);
|
---|
416 | return 1;
|
---|
417 | }
|
---|