15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2013 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "crypto/hkdf.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/strings/string_number_conversions.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "testing/gtest/include/gtest/gtest.h" 11868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using crypto::HKDF; 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace test { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct HKDFTest { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* key_hex; 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* salt_hex; 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const char* info_hex; 212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const char* output_hex; 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// These test cases are taken from 252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// https://tools.ietf.org/html/rfc5869#appendix-A. 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)static const HKDFTest kHKDFTests[] = {{ 272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "000102030405060708090a0b0c", 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "f0f1f2f3f4f5f6f7f8f9", 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "3cb25f25faacd57a90434f64d0362f2a2d2d0a90cf1a5a4c5db02d56ecc4c5bf34007208d5" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "b887185865", 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }, { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f2021222324" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "25262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f40414243444546474849" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "4a4b4c4d4e4f", 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f8081828384" 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "85868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9fa0a1a2a3a4a5a6a7a8a9" 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "aaabacadaeaf", 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "b0b1b2b3b4b5b6b7b8b9babbbcbdbebfc0c1c2c3c4c5c6c7c8c9cacbcccdcecfd0d1d2d3d4" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "d5d6d7d8d9dadbdcdddedfe0e1e2e3e4e5e6e7e8e9eaebecedeeeff0f1f2f3f4f5f6f7f8f9" 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "fafbfcfdfeff", 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "b11e398dc80327a1c8e7f78c596a49344f012eda2d4efad8a050cc4c19afa97c59045a99ca" 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "c7827271cb41c65e590e09da3275600c2f09b8367793a9aca3db71cc30c58179ec3e87c14c" 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "01d5c1f3434f1d87", 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }, { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b", 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "", 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "", 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "8da4e775a563c18f715f802a063c5a31b8a11f5c5ee1879ec3454e5f3c738d2d9d201395fa" 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) "a4b61a96c8", 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) }, 522a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TEST(HKDFTest, HKDF) { 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (size_t i = 0; i < arraysize(kHKDFTests); i++) { 56 const HKDFTest& test(kHKDFTests[i]); 57 SCOPED_TRACE(i); 58 59 std::vector<uint8> data; 60 ASSERT_TRUE(base::HexStringToBytes(test.key_hex, &data)); 61 const std::string key(reinterpret_cast<char*>(&data[0]), data.size()); 62 63 data.clear(); 64 // |salt_hex| is optional and may be empty. 65 std::string salt(test.salt_hex); 66 if (!salt.empty()) { 67 ASSERT_TRUE(base::HexStringToBytes(salt, &data)); 68 salt.assign(reinterpret_cast<char*>(&data[0]), data.size()); 69 } 70 71 data.clear(); 72 // |info_hex| is optional and may be empty. 73 std::string info(test.info_hex); 74 if (!info.empty()) { 75 ASSERT_TRUE(base::HexStringToBytes(info, &data)); 76 info.assign(reinterpret_cast<char*>(&data[0]), data.size()); 77 } 78 79 data.clear(); 80 ASSERT_TRUE(base::HexStringToBytes(test.output_hex, &data)); 81 const std::string expected(reinterpret_cast<char*>(&data[0]), data.size()); 82 83 // We set the key_length to the length of the expected output and then take 84 // the result from the first key, which is the client write key. 85 HKDF hkdf(key, salt, info, expected.size(), 0, 0); 86 87 ASSERT_EQ(expected.size(), hkdf.client_write_key().size()); 88 EXPECT_EQ(0, memcmp(expected.data(), hkdf.client_write_key().data(), 89 expected.size())); 90 } 91} 92 93} // namespace 94} // namespace test 95