1 /* 2 * Copyright 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "hkdf.h" 18 19 #include <gtest/gtest.h> 20 #include <string.h> 21 22 #include "android_keymaster_test_utils.h" 23 24 using std::string; 25 26 namespace keymaster { 27 namespace test { 28 29 struct HkdfTest { 30 const char* key_hex; 31 const char* salt_hex; 32 const char* info_hex; 33 const char* output_hex; 34 }; 35 36 // These test cases are taken from 37 // https://tools.ietf.org/html/rfc5869#appendix-A. 38 static const HkdfTest kHkdfTests[] = { 39 { 40 "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "000102030405060708090a0b0c", 41 "f0f1f2f3f4f5f6f7f8f9", 42 "3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5b887185865", 43 }, 44 { 45 "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c" 46 "2d2e2f303132333435363738393a3b3c3d3e3f404142434445464748494a4b4c4d4e4f", 47 "606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f808182838485868788898a8b8c" 48 "8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9aaabacadaeaf", 49 "b0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4d5d6d7d8d9dadbdc" 50 "dddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff", 51 "b11e398dc80327a1c8e7f78c596a49344f012eda2d4efad8a050cc4c19afa97c59045a99cac7827271cb41c65e" 52 "590e09da3275600c2f09b8367793a9aca3db71cc30c58179ec3e87c14c01d5c1f3434f1d87", 53 }, 54 { 55 "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", "", "", 56 "8da4e775a563c18f715f802a063c5a31b8a11f5c5ee1879ec3454e5f3c738d2d9d201395faa4b61a96c8", 57 }, 58 }; 59 60 TEST(HkdfTest, Hkdf) { 61 for (auto& test : kHkdfTests) { 62 const string key = hex2str(test.key_hex); 63 const string salt = hex2str(test.salt_hex); 64 const string info = hex2str(test.info_hex); 65 const string expected = hex2str(test.output_hex); 66 size_t output_len = expected.size(); 67 uint8_t output[output_len]; 68 Rfc5869Sha256Kdf hkdf; 69 ASSERT_TRUE(hkdf.Init(reinterpret_cast<const uint8_t*>(key.data()), key.size(), 70 reinterpret_cast<const uint8_t*>(salt.data()), salt.size())); 71 ASSERT_TRUE(hkdf.GenerateKey(reinterpret_cast<const uint8_t*>(info.data()), info.size(), 72 output, output_len)); 73 EXPECT_EQ(0, memcmp(output, expected.data(), output_len)); 74 } 75 } 76 77 } // namespace test 78 } // namespace keymaster 79
