| /* Copyright (c) 2014, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include <openssl/digest.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/hkdf.h> |
| #include <openssl/kdf.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include "../../test/file_test.h" |
| #include "../../test/test_util.h" |
| #include "../../test/wycheproof_util.h" |
| |
| |
| struct HKDFTestVector { |
| const EVP_MD *(*md_func)(void); |
| const uint8_t ikm[80]; |
| const size_t ikm_len; |
| const uint8_t salt[80]; |
| const size_t salt_len; |
| const uint8_t info[80]; |
| const size_t info_len; |
| const uint8_t prk[EVP_MAX_MD_SIZE]; |
| const size_t prk_len; |
| const size_t out_len; |
| const uint8_t out[82]; |
| }; |
| |
| // These test vectors are from RFC 5869. |
| static const HKDFTestVector kTests[] = { |
| { |
| EVP_sha256, |
| { |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| }, 22, |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, |
| 0x0c, |
| }, 13, |
| { |
| 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, |
| }, 10, |
| { |
| 0x07, 0x77, 0x09, 0x36, 0x2c, 0x2e, 0x32, 0xdf, 0x0d, 0xdc, 0x3f, 0x0d, |
| 0xc4, 0x7b, 0xba, 0x63, 0x90, 0xb6, 0xc7, 0x3b, 0xb5, 0x0f, 0x9c, 0x31, |
| 0x22, 0xec, 0x84, 0x4a, 0xd7, 0xc2, 0xb3, 0xe5, |
| }, 32, |
| 42, { |
| 0x3c, 0xb2, 0x5f, 0x25, 0xfa, 0xac, 0xd5, 0x7a, 0x90, 0x43, 0x4f, 0x64, |
| 0xd0, 0x36, 0x2f, 0x2a, 0x2d, 0x2d, 0x0a, 0x90, 0xcf, 0x1a, 0x5a, 0x4c, |
| 0x5d, 0xb0, 0x2d, 0x56, 0xec, 0xc4, 0xc5, 0xbf, 0x34, 0x00, 0x72, 0x08, |
| 0xd5, 0xb8, 0x87, 0x18, 0x58, 0x65 |
| } |
| }, |
| { |
| EVP_sha256, |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, |
| 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, |
| 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, |
| 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f |
| }, 80, |
| { |
| 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, |
| 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, |
| 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, |
| 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf |
| }, 80, |
| { |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, |
| 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, |
| 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, |
| 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
| 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, |
| 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
| 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff |
| }, 80, |
| { |
| 0x06, 0xa6, 0xb8, 0x8c, 0x58, 0x53, 0x36, 0x1a, 0x06, 0x10, 0x4c, 0x9c, |
| 0xeb, 0x35, 0xb4, 0x5c, 0xef, 0x76, 0x00, 0x14, 0x90, 0x46, 0x71, 0x01, |
| 0x4a, 0x19, 0x3f, 0x40, 0xc1, 0x5f, 0xc2, 0x44, |
| }, 32, |
| 82, { |
| 0xb1, 0x1e, 0x39, 0x8d, 0xc8, 0x03, 0x27, 0xa1, 0xc8, 0xe7, 0xf7, 0x8c, |
| 0x59, 0x6a, 0x49, 0x34, 0x4f, 0x01, 0x2e, 0xda, 0x2d, 0x4e, 0xfa, 0xd8, |
| 0xa0, 0x50, 0xcc, 0x4c, 0x19, 0xaf, 0xa9, 0x7c, 0x59, 0x04, 0x5a, 0x99, |
| 0xca, 0xc7, 0x82, 0x72, 0x71, 0xcb, 0x41, 0xc6, 0x5e, 0x59, 0x0e, 0x09, |
| 0xda, 0x32, 0x75, 0x60, 0x0c, 0x2f, 0x09, 0xb8, 0x36, 0x77, 0x93, 0xa9, |
| 0xac, 0xa3, 0xdb, 0x71, 0xcc, 0x30, 0xc5, 0x81, 0x79, 0xec, 0x3e, 0x87, |
| 0xc1, 0x4c, 0x01, 0xd5, 0xc1, 0xf3, 0x43, 0x4f, 0x1d, 0x87 |
| } |
| }, |
| { |
| EVP_sha256, |
| { |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| }, 22, |
| { |
| 0, |
| }, 0, |
| { |
| 0, |
| }, 0, |
| { |
| 0x19, 0xef, 0x24, 0xa3, 0x2c, 0x71, 0x7b, 0x16, 0x7f, 0x33, 0xa9, 0x1d, |
| 0x6f, 0x64, 0x8b, 0xdf, 0x96, 0x59, 0x67, 0x76, 0xaf, 0xdb, 0x63, 0x77, |
| 0xac, 0x43, 0x4c, 0x1c, 0x29, 0x3c, 0xcb, 0x04 |
| }, 32, |
| 42, { |
| 0x8d, 0xa4, 0xe7, 0x75, 0xa5, 0x63, 0xc1, 0x8f, 0x71, 0x5f, 0x80, 0x2a, |
| 0x06, 0x3c, 0x5a, 0x31, 0xb8, 0xa1, 0x1f, 0x5c, 0x5e, 0xe1, 0x87, 0x9e, |
| 0xc3, 0x45, 0x4e, 0x5f, 0x3c, 0x73, 0x8d, 0x2d, 0x9d, 0x20, 0x13, 0x95, |
| 0xfa, 0xa4, 0xb6, 0x1a, 0x96, 0xc8 |
| } |
| }, |
| { |
| EVP_sha1, |
| { |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| }, 11, |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, |
| 0x0c, |
| }, 13, |
| { |
| 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, |
| }, 10, |
| { |
| 0x9b, 0x6c, 0x18, 0xc4, 0x32, 0xa7, 0xbf, 0x8f, 0x0e, 0x71, 0xc8, 0xeb, |
| 0x88, 0xf4, 0xb3, 0x0b, 0xaa, 0x2b, 0xa2, 0x43 |
| }, 20, |
| 42, { |
| 0x08, 0x5a, 0x01, 0xea, 0x1b, 0x10, 0xf3, 0x69, 0x33, 0x06, 0x8b, 0x56, |
| 0xef, 0xa5, 0xad, 0x81, 0xa4, 0xf1, 0x4b, 0x82, 0x2f, 0x5b, 0x09, 0x15, |
| 0x68, 0xa9, 0xcd, 0xd4, 0xf1, 0x55, 0xfd, 0xa2, 0xc2, 0x2e, 0x42, 0x24, |
| 0x78, 0xd3, 0x05, 0xf3, 0xf8, 0x96 |
| } |
| }, |
| { |
| EVP_sha1, |
| { |
| 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, |
| 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, |
| 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, |
| 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, |
| 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, |
| 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f |
| }, 80, |
| { |
| 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, |
| 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, |
| 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, |
| 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, |
| 0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, |
| 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf |
| }, 80, |
| { |
| 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, |
| 0xbc, 0xbd, 0xbe, 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, |
| 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, |
| 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
| 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, |
| 0xec, 0xed, 0xee, 0xef, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, |
| 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff |
| }, 80, |
| { |
| 0x8a, 0xda, 0xe0, 0x9a, 0x2a, 0x30, 0x70, 0x59, 0x47, 0x8d, 0x30, 0x9b, |
| 0x26, 0xc4, 0x11, 0x5a, 0x22, 0x4c, 0xfa, 0xf6, |
| }, 20, |
| 82, { |
| 0x0b, 0xd7, 0x70, 0xa7, 0x4d, 0x11, 0x60, 0xf7, 0xc9, 0xf1, 0x2c, 0xd5, |
| 0x91, 0x2a, 0x06, 0xeb, 0xff, 0x6a, 0xdc, 0xae, 0x89, 0x9d, 0x92, 0x19, |
| 0x1f, 0xe4, 0x30, 0x56, 0x73, 0xba, 0x2f, 0xfe, 0x8f, 0xa3, 0xf1, 0xa4, |
| 0xe5, 0xad, 0x79, 0xf3, 0xf3, 0x34, 0xb3, 0xb2, 0x02, 0xb2, 0x17, 0x3c, |
| 0x48, 0x6e, 0xa3, 0x7c, 0xe3, 0xd3, 0x97, 0xed, 0x03, 0x4c, 0x7f, 0x9d, |
| 0xfe, 0xb1, 0x5c, 0x5e, 0x92, 0x73, 0x36, 0xd0, 0x44, 0x1f, 0x4c, 0x43, |
| 0x00, 0xe2, 0xcf, 0xf0, 0xd0, 0x90, 0x0b, 0x52, 0xd3, 0xb4 |
| } |
| }, |
| { |
| EVP_sha1, |
| { |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, 0x0b, |
| }, 22, |
| { |
| 0, |
| }, 0, |
| { |
| 0, |
| }, 0, |
| { |
| 0xda, 0x8c, 0x8a, 0x73, 0xc7, 0xfa, 0x77, 0x28, 0x8e, 0xc6, 0xf5, 0xe7, |
| 0xc2, 0x97, 0x78, 0x6a, 0xa0, 0xd3, 0x2d, 0x01, |
| }, 20, |
| 42, { |
| 0x0a, 0xc1, 0xaf, 0x70, 0x02, 0xb3, 0xd7, 0x61, 0xd1, 0xe5, 0x52, 0x98, |
| 0xda, 0x9d, 0x05, 0x06, 0xb9, 0xae, 0x52, 0x05, 0x72, 0x20, 0xa3, 0x06, |
| 0xe0, 0x7b, 0x6b, 0x87, 0xe8, 0xdf, 0x21, 0xd0, 0xea, 0x00, 0x03, 0x3d, |
| 0xe0, 0x39, 0x84, 0xd3, 0x49, 0x18 |
| } |
| }, |
| { |
| EVP_sha1, |
| { |
| 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, |
| 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, |
| }, 22, |
| { |
| 0, |
| }, 0, |
| { |
| 0, |
| }, 0, |
| { |
| 0x2a, 0xdc, 0xca, 0xda, 0x18, 0x77, 0x9e, 0x7c, 0x20, 0x77, 0xad, 0x2e, |
| 0xb1, 0x9d, 0x3f, 0x3e, 0x73, 0x13, 0x85, 0xdd, |
| }, 20, |
| 42, { |
| 0x2c, 0x91, 0x11, 0x72, 0x04, 0xd7, 0x45, 0xf3, 0x50, 0x0d, 0x63, 0x6a, |
| 0x62, 0xf6, 0x4f, 0x0a, 0xb3, 0xba, 0xe5, 0x48, 0xaa, 0x53, 0xd4, 0x23, |
| 0xb0, 0xd1, 0xf2, 0x7e, 0xbb, 0xa6, 0xf5, 0xe5, 0x67, 0x3a, 0x08, 0x1d, |
| 0x70, 0xcc, 0xe7, 0xac, 0xfc, 0x48 |
| } |
| }, |
| }; |
| |
| TEST(HKDFTest, TestVectors) { |
| for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTests); i++) { |
| SCOPED_TRACE(i); |
| const HKDFTestVector *test = &kTests[i]; |
| |
| uint8_t prk[EVP_MAX_MD_SIZE]; |
| size_t prk_len; |
| ASSERT_TRUE(HKDF_extract(prk, &prk_len, test->md_func(), test->ikm, |
| test->ikm_len, test->salt, test->salt_len)); |
| EXPECT_EQ(Bytes(test->prk, test->prk_len), Bytes(prk, prk_len)); |
| |
| uint8_t buf[82]; |
| ASSERT_TRUE(HKDF_expand(buf, test->out_len, test->md_func(), prk, prk_len, |
| test->info, test->info_len)); |
| EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, test->out_len)); |
| |
| ASSERT_TRUE(HKDF(buf, test->out_len, test->md_func(), test->ikm, |
| test->ikm_len, test->salt, test->salt_len, test->info, |
| test->info_len)); |
| EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, test->out_len)); |
| |
| // Repeat the test with the OpenSSL compatibility |EVP_PKEY_derive| API. |
| bssl::UniquePtr<EVP_PKEY_CTX> ctx( |
| EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr)); |
| ASSERT_TRUE(ctx); |
| ASSERT_TRUE(EVP_PKEY_derive_init(ctx.get())); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_hkdf_mode(ctx.get(), EVP_PKEY_HKDEF_MODE_EXTRACT_ONLY)); |
| ASSERT_TRUE(EVP_PKEY_CTX_set_hkdf_md(ctx.get(), test->md_func())); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_set1_hkdf_key(ctx.get(), test->ikm, test->ikm_len)); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_set1_hkdf_salt(ctx.get(), test->salt, test->salt_len)); |
| for (bool copy_ctx : {false, true}) { |
| SCOPED_TRACE(copy_ctx); |
| bssl::UniquePtr<EVP_PKEY_CTX> copy; |
| EVP_PKEY_CTX *use_ctx = ctx.get(); |
| if (copy_ctx) { |
| copy.reset(EVP_PKEY_CTX_dup(ctx.get())); |
| ASSERT_TRUE(copy); |
| use_ctx = copy.get(); |
| } |
| |
| // A null output should report the length. |
| prk_len = 0; |
| ASSERT_TRUE(EVP_PKEY_derive(use_ctx, nullptr, &prk_len)); |
| EXPECT_EQ(prk_len, test->prk_len); |
| |
| // Too small of a buffer should cleanly fail. |
| prk_len = test->prk_len - 1; |
| EXPECT_FALSE(EVP_PKEY_derive(use_ctx, prk, &prk_len)); |
| ERR_clear_error(); |
| |
| // Test the correct buffer size. |
| OPENSSL_memset(prk, 0, sizeof(prk)); |
| prk_len = test->prk_len; |
| ASSERT_TRUE(EVP_PKEY_derive(use_ctx, prk, &prk_len)); |
| EXPECT_EQ(Bytes(test->prk, test->prk_len), Bytes(prk, prk_len)); |
| |
| // Test a larger buffer than necessary. |
| OPENSSL_memset(prk, 0, sizeof(prk)); |
| prk_len = test->prk_len + 1; |
| ASSERT_TRUE(EVP_PKEY_derive(use_ctx, prk, &prk_len)); |
| EXPECT_EQ(Bytes(test->prk, test->prk_len), Bytes(prk, prk_len)); |
| } |
| |
| ctx.reset(EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr)); |
| ASSERT_TRUE(ctx); |
| ASSERT_TRUE(EVP_PKEY_derive_init(ctx.get())); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_hkdf_mode(ctx.get(), EVP_PKEY_HKDEF_MODE_EXPAND_ONLY)); |
| ASSERT_TRUE(EVP_PKEY_CTX_set_hkdf_md(ctx.get(), test->md_func())); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_set1_hkdf_key(ctx.get(), test->prk, test->prk_len)); |
| // |info| can be passed in multiple parts. |
| size_t half = test->info_len / 2; |
| ASSERT_TRUE(EVP_PKEY_CTX_add1_hkdf_info(ctx.get(), test->info, half)); |
| ASSERT_TRUE(EVP_PKEY_CTX_add1_hkdf_info(ctx.get(), test->info + half, |
| test->info_len - half)); |
| for (bool copy_ctx : {false, true}) { |
| SCOPED_TRACE(copy_ctx); |
| bssl::UniquePtr<EVP_PKEY_CTX> copy; |
| EVP_PKEY_CTX *use_ctx = ctx.get(); |
| if (copy_ctx) { |
| copy.reset(EVP_PKEY_CTX_dup(ctx.get())); |
| ASSERT_TRUE(copy); |
| use_ctx = copy.get(); |
| } |
| OPENSSL_memset(buf, 0, sizeof(buf)); |
| size_t len = test->out_len; |
| ASSERT_TRUE(EVP_PKEY_derive(use_ctx, buf, &len)); |
| EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, len)); |
| } |
| |
| ctx.reset(EVP_PKEY_CTX_new_id(EVP_PKEY_HKDF, nullptr)); |
| ASSERT_TRUE(ctx); |
| ASSERT_TRUE(EVP_PKEY_derive_init(ctx.get())); |
| ASSERT_TRUE(EVP_PKEY_CTX_hkdf_mode(ctx.get(), |
| EVP_PKEY_HKDEF_MODE_EXTRACT_AND_EXPAND)); |
| ASSERT_TRUE(EVP_PKEY_CTX_set_hkdf_md(ctx.get(), test->md_func())); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_set1_hkdf_key(ctx.get(), test->ikm, test->ikm_len)); |
| ASSERT_TRUE( |
| EVP_PKEY_CTX_set1_hkdf_salt(ctx.get(), test->salt, test->salt_len)); |
| // |info| can be passed in multiple parts. |
| ASSERT_TRUE(EVP_PKEY_CTX_add1_hkdf_info(ctx.get(), test->info, half)); |
| ASSERT_TRUE(EVP_PKEY_CTX_add1_hkdf_info(ctx.get(), test->info + half, |
| test->info_len - half)); |
| for (bool copy_ctx : {false, true}) { |
| SCOPED_TRACE(copy_ctx); |
| bssl::UniquePtr<EVP_PKEY_CTX> copy; |
| EVP_PKEY_CTX *use_ctx = ctx.get(); |
| if (copy_ctx) { |
| copy.reset(EVP_PKEY_CTX_dup(ctx.get())); |
| ASSERT_TRUE(copy); |
| use_ctx = copy.get(); |
| } |
| OPENSSL_memset(buf, 0, sizeof(buf)); |
| size_t len = test->out_len; |
| ASSERT_TRUE(EVP_PKEY_derive(use_ctx, buf, &len)); |
| EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, len)); |
| } |
| } |
| } |
| |
| static void RunWycheproofTest(const char *path, const EVP_MD *md) { |
| SCOPED_TRACE(path); |
| FileTestGTest(path, [&](FileTest *t) { |
| t->IgnoreInstruction("keySize"); |
| std::vector<uint8_t> ikm, info, okm, salt; |
| ASSERT_TRUE(t->GetBytes(&ikm, "ikm")); |
| ASSERT_TRUE(t->GetBytes(&info, "info")); |
| ASSERT_TRUE(t->GetBytes(&okm, "okm")); |
| ASSERT_TRUE(t->GetBytes(&salt, "salt")); |
| WycheproofResult result; |
| ASSERT_TRUE(GetWycheproofResult(t, &result)); |
| std::string size_str; |
| ASSERT_TRUE(t->GetAttribute(&size_str, "size")); |
| |
| std::vector<uint8_t> out(atoi(size_str.c_str())); |
| bool ret = HKDF(out.data(), out.size(), md, ikm.data(), ikm.size(), |
| salt.data(), salt.size(), info.data(), info.size()); |
| EXPECT_EQ(result.IsValid(), ret); |
| if (result.IsValid()) { |
| EXPECT_EQ(Bytes(okm), Bytes(out)); |
| } |
| }); |
| } |
| |
| TEST(HKDFTest, WycheproofSHA1) { |
| RunWycheproofTest("third_party/wycheproof_testvectors/hkdf_sha1_test.txt", |
| EVP_sha1()); |
| } |
| |
| TEST(HKDFTest, WycheproofSHA256) { |
| RunWycheproofTest("third_party/wycheproof_testvectors/hkdf_sha256_test.txt", |
| EVP_sha256()); |
| } |
| |
| TEST(HKDFTest, WycheproofSHA384) { |
| RunWycheproofTest("third_party/wycheproof_testvectors/hkdf_sha384_test.txt", |
| EVP_sha384()); |
| } |
| |
| TEST(HKDFTest, WycheproofSHA512) { |
| RunWycheproofTest("third_party/wycheproof_testvectors/hkdf_sha512_test.txt", |
| EVP_sha512()); |
| } |
