Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 1 | /* Copyright (c) 2017, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | // cavp_keywrap_test processes a NIST CAVP AES test vector request file and |
| 16 | // emits the corresponding response. |
| 17 | |
| 18 | #include <stdlib.h> |
| 19 | |
| 20 | #include <openssl/aes.h> |
| 21 | #include <openssl/crypto.h> |
| 22 | |
| 23 | #include "../crypto/test/file_test.h" |
| 24 | #include "cavp_test_util.h" |
| 25 | |
| 26 | |
| 27 | namespace { |
| 28 | |
| 29 | struct TestCtx { |
| 30 | bool encrypt; |
| 31 | }; |
| 32 | |
| 33 | } |
| 34 | |
| 35 | static bool AESKeyWrap(std::vector<uint8_t> *out, bool encrypt, |
| 36 | const std::vector<uint8_t> &key, |
| 37 | const std::vector<uint8_t> &in) { |
| 38 | size_t key_bits = key.size() * 8; |
| 39 | if (key_bits != 128 && key_bits != 256) { |
| 40 | return false; |
| 41 | } |
| 42 | AES_KEY aes_key; |
| 43 | |
| 44 | if (encrypt) { |
| 45 | out->resize(in.size() + 8); |
| 46 | if (AES_set_encrypt_key(key.data(), key_bits, &aes_key) || |
| 47 | AES_wrap_key(&aes_key, nullptr, out->data(), in.data(), in.size()) == |
| 48 | -1) { |
| 49 | return false; |
| 50 | } |
| 51 | } else { |
| 52 | out->resize(in.size() - 8); |
| 53 | if (AES_set_decrypt_key(key.data(), key_bits, &aes_key) || |
| 54 | AES_unwrap_key(&aes_key, nullptr, out->data(), in.data(), in.size()) == |
| 55 | -1) { |
| 56 | return false; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return true; |
| 61 | } |
| 62 | |
| 63 | static bool TestCipher(FileTest *t, void *arg) { |
| 64 | TestCtx *ctx = reinterpret_cast<TestCtx *>(arg); |
| 65 | |
| 66 | std::string count, unused, in_label = ctx->encrypt ? "P" : "C", |
| 67 | result_label = ctx->encrypt ? "C" : "P"; |
| 68 | std::vector<uint8_t> key, in, result; |
| 69 | // clang-format off |
| 70 | if (!t->GetInstruction(&unused, "PLAINTEXT LENGTH") || |
| 71 | !t->GetAttribute(&count, "COUNT") || |
| 72 | !t->GetBytes(&key, "K") || |
| 73 | !t->GetBytes(&in, in_label)) { |
| 74 | return false; |
| 75 | } |
| 76 | // clang-format on |
| 77 | |
| 78 | printf("%s", t->CurrentTestToString().c_str()); |
| 79 | if (!AESKeyWrap(&result, ctx->encrypt, key, in)) { |
| 80 | if (ctx->encrypt) { |
| 81 | return false; |
| 82 | } else { |
| 83 | printf("FAIL\r\n\r\n"); |
| 84 | } |
| 85 | } else { |
| 86 | printf("%s = %s\r\n\r\n", result_label.c_str(), |
| 87 | EncodeHex(result.data(), result.size()).c_str()); |
| 88 | } |
| 89 | |
| 90 | return true; |
| 91 | } |
| 92 | |
| 93 | static int usage(char *arg) { |
| 94 | fprintf( |
| 95 | stderr, |
| 96 | "usage: %s (enc|dec) (128|256) <test file>\n", |
| 97 | arg); |
| 98 | return 1; |
| 99 | } |
| 100 | |
| 101 | int cavp_keywrap_test_main(int argc, char **argv) { |
| 102 | if (argc != 4) { |
| 103 | return usage(argv[0]); |
| 104 | } |
| 105 | |
| 106 | const std::string op(argv[1]); |
| 107 | bool encrypt; |
| 108 | if (op == "enc") { |
| 109 | encrypt = true; |
| 110 | } else if (op == "dec") { |
| 111 | encrypt = false; |
| 112 | } else { |
| 113 | return usage(argv[0]); |
| 114 | } |
| 115 | |
| 116 | TestCtx ctx = {encrypt}; |
| 117 | |
| 118 | FileTest::Options opts; |
| 119 | opts.path = argv[3]; |
| 120 | opts.callback = TestCipher; |
| 121 | opts.arg = &ctx; |
| 122 | opts.silent = true; |
| 123 | opts.comment_callback = EchoComment; |
| 124 | return FileTestMain(opts); |
| 125 | } |