1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <memory> 58 #include <string> 59 #include <vector> 60 61 #include <gtest/gtest.h> 62 63 #include <openssl/digest.h> 64 #include <openssl/hmac.h> 65 66 #include "../test/file_test.h" 67 #include "../test/test_util.h" 68 69 70 static const EVP_MD *GetDigest(const std::string &name) { 71 if (name == "MD5") { 72 return EVP_md5(); 73 } else if (name == "SHA1") { 74 return EVP_sha1(); 75 } else if (name == "SHA224") { 76 return EVP_sha224(); 77 } else if (name == "SHA256") { 78 return EVP_sha256(); 79 } else if (name == "SHA384") { 80 return EVP_sha384(); 81 } else if (name == "SHA512") { 82 return EVP_sha512(); 83 } 84 return nullptr; 85 } 86 87 TEST(HMACTest, TestVectors) { 88 FileTestGTest("crypto/hmac_extra/hmac_tests.txt", [](FileTest *t) { 89 std::string digest_str; 90 ASSERT_TRUE(t->GetAttribute(&digest_str, "HMAC")); 91 const EVP_MD *digest = GetDigest(digest_str); 92 ASSERT_TRUE(digest) << "Unknown digest: " << digest_str; 93 94 std::vector<uint8_t> key, input, output; 95 ASSERT_TRUE(t->GetBytes(&key, "Key")); 96 ASSERT_TRUE(t->GetBytes(&input, "Input")); 97 ASSERT_TRUE(t->GetBytes(&output, "Output")); 98 ASSERT_EQ(EVP_MD_size(digest), output.size()); 99 100 // Test using the one-shot API. 101 unsigned expected_mac_len = EVP_MD_size(digest); 102 std::unique_ptr<uint8_t[]> mac(new uint8_t[expected_mac_len]); 103 unsigned mac_len; 104 ASSERT_TRUE(HMAC(digest, key.data(), key.size(), input.data(), input.size(), 105 mac.get(), &mac_len)); 106 EXPECT_EQ(Bytes(output), Bytes(mac.get(), mac_len)); 107 108 // Test using HMAC_CTX. 109 bssl::ScopedHMAC_CTX ctx; 110 ASSERT_TRUE( 111 HMAC_Init_ex(ctx.get(), key.data(), key.size(), digest, nullptr)); 112 ASSERT_TRUE(HMAC_Update(ctx.get(), input.data(), input.size())); 113 ASSERT_TRUE(HMAC_Final(ctx.get(), mac.get(), &mac_len)); 114 EXPECT_EQ(Bytes(output), Bytes(mac.get(), mac_len)); 115 116 // Test that an HMAC_CTX may be reset with the same key. 117 ASSERT_TRUE(HMAC_Init_ex(ctx.get(), nullptr, 0, digest, nullptr)); 118 ASSERT_TRUE(HMAC_Update(ctx.get(), input.data(), input.size())); 119 ASSERT_TRUE(HMAC_Final(ctx.get(), mac.get(), &mac_len)); 120 EXPECT_EQ(Bytes(output), Bytes(mac.get(), mac_len)); 121 122 // Test feeding the input in byte by byte. 123 ASSERT_TRUE(HMAC_Init_ex(ctx.get(), nullptr, 0, nullptr, nullptr)); 124 for (size_t i = 0; i < input.size(); i++) { 125 ASSERT_TRUE(HMAC_Update(ctx.get(), &input[i], 1)); 126 } 127 ASSERT_TRUE(HMAC_Final(ctx.get(), mac.get(), &mac_len)); 128 EXPECT_EQ(Bytes(output), Bytes(mac.get(), mac_len)); 129 }); 130 } 131
