| // Copyright (c) 2017, 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/cipher.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include "../../crypto/internal.h" |
| #include "../../crypto/test/test_util.h" |
| |
| struct CFBTestCase { |
| size_t key_len; |
| uint8_t key[32]; |
| uint8_t iv[16]; |
| uint8_t plaintext[16*4]; |
| uint8_t ciphertext[16*4]; |
| }; |
| |
| static const CFBTestCase kCFBTestCases[] = { |
| { |
| // This is the test case from |
| // http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf, |
| // section F.3.13, for CFB128-AES128 |
| 16, |
| {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c}, |
| {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, |
| {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, |
| 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10}, |
| {0x3b, 0x3f, 0xd9, 0x2e, 0xb7, 0x2d, 0xad, 0x20, 0x33, 0x34, 0x49, 0xf8, 0xe8, 0x3c, 0xfb, 0x4a, |
| 0xc8, 0xa6, 0x45, 0x37, 0xa0, 0xb3, 0xa9, 0x3f, 0xcd, 0xe3, 0xcd, 0xad, 0x9f, 0x1c, 0xe5, 0x8b, |
| 0x26, 0x75, 0x1f, 0x67, 0xa3, 0xcb, 0xb1, 0x40, 0xb1, 0x80, 0x8c, 0xf1, 0x87, 0xa4, 0xf4, 0xdf, |
| 0xc0, 0x4b, 0x05, 0x35, 0x7c, 0x5d, 0x1c, 0x0e, 0xea, 0xc4, 0xc6, 0x6f, 0x9f, 0xf7, 0xf2, 0xe6}, |
| }, |
| { |
| // This is the test case from |
| // http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf, |
| // section F.3.15, CFB128-AES192 |
| 24, |
| {0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, |
| 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b}, |
| {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, |
| {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, |
| 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10}, |
| {0xcd, 0xc8, 0x0d, 0x6f, 0xdd, 0xf1, 0x8c, 0xab, 0x34, 0xc2, 0x59, 0x09, 0xc9, 0x9a, 0x41, 0x74, |
| 0x67, 0xce, 0x7f, 0x7f, 0x81, 0x17, 0x36, 0x21, 0x96, 0x1a, 0x2b, 0x70, 0x17, 0x1d, 0x3d, 0x7a, |
| 0x2e, 0x1e, 0x8a, 0x1d, 0xd5, 0x9b, 0x88, 0xb1, 0xc8, 0xe6, 0x0f, 0xed, 0x1e, 0xfa, 0xc4, 0xc9, |
| 0xc0, 0x5f, 0x9f, 0x9c, 0xa9, 0x83, 0x4f, 0xa0, 0x42, 0xae, 0x8f, 0xba, 0x58, 0x4b, 0x09, 0xff}, |
| }, |
| { |
| // This is the test case from |
| // http://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-38a.pdf, |
| // section F.3.17, CFB128-AES256 |
| 32, |
| {0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81, |
| 0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4}, |
| {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}, |
| {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a, |
| 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51, |
| 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef, |
| 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10}, |
| {0xdc, 0x7e, 0x84, 0xbf, 0xda, 0x79, 0x16, 0x4b, 0x7e, 0xcd, 0x84, 0x86, 0x98, 0x5d, 0x38, 0x60, |
| 0x39, 0xff, 0xed, 0x14, 0x3b, 0x28, 0xb1, 0xc8, 0x32, 0x11, 0x3c, 0x63, 0x31, 0xe5, 0x40, 0x7b, |
| 0xdf, 0x10, 0x13, 0x24, 0x15, 0xe5, 0x4b, 0x92, 0xa1, 0x3e, 0xd0, 0xa8, 0x26, 0x7a, 0xe2, 0xf9, |
| 0x75, 0xa3, 0x85, 0x74, 0x1a, 0xb9, 0xce, 0xf8, 0x20, 0x31, 0x62, 0x3d, 0x55, 0xb1, 0xe4, 0x71}, |
| }, |
| }; |
| |
| TEST(CFBTest, TestVectors) { |
| unsigned test_num = 0; |
| for (const auto &test : kCFBTestCases) { |
| test_num++; |
| SCOPED_TRACE(test_num); |
| |
| const size_t input_len = sizeof(test.plaintext); |
| std::unique_ptr<uint8_t[]> out(new uint8_t[input_len]); |
| |
| for (size_t stride = 1; stride <= input_len; stride++) { |
| bssl::ScopedEVP_CIPHER_CTX ctx; |
| if (test.key_len == 16) { |
| ASSERT_TRUE(EVP_EncryptInit_ex(ctx.get(), EVP_aes_128_cfb128(), nullptr, |
| test.key, test.iv)); |
| } else if (test.key_len == 24) { |
| ASSERT_TRUE(EVP_EncryptInit_ex(ctx.get(), EVP_aes_192_cfb128(), nullptr, |
| test.key, test.iv)); |
| } else { |
| assert(test.key_len == 32); |
| ASSERT_TRUE(EVP_EncryptInit_ex(ctx.get(), EVP_aes_256_cfb128(), nullptr, |
| test.key, test.iv)); |
| } |
| |
| size_t done = 0; |
| while (done < input_len) { |
| size_t todo = stride; |
| if (todo > input_len - done) { |
| todo = input_len - done; |
| } |
| |
| int out_bytes; |
| ASSERT_TRUE(EVP_EncryptUpdate(ctx.get(), out.get() + done, &out_bytes, |
| test.plaintext + done, todo)); |
| ASSERT_EQ(static_cast<size_t>(out_bytes), todo); |
| |
| done += todo; |
| } |
| |
| EXPECT_EQ(Bytes(test.ciphertext), Bytes(out.get(), input_len)); |
| } |
| |
| bssl::ScopedEVP_CIPHER_CTX decrypt_ctx; |
| if (test.key_len == 16) { |
| ASSERT_TRUE(EVP_DecryptInit_ex(decrypt_ctx.get(), EVP_aes_128_cfb128(), |
| nullptr, test.key, test.iv)); |
| } else if (test.key_len == 24) { |
| ASSERT_TRUE(EVP_DecryptInit_ex(decrypt_ctx.get(), EVP_aes_192_cfb128(), |
| nullptr, test.key, test.iv)); |
| } else { |
| assert(test.key_len == 32); |
| ASSERT_TRUE(EVP_DecryptInit_ex(decrypt_ctx.get(), EVP_aes_256_cfb128(), |
| nullptr, test.key, test.iv)); |
| } |
| |
| std::unique_ptr<uint8_t[]> plaintext(new uint8_t[input_len]); |
| int num_bytes; |
| ASSERT_TRUE(EVP_DecryptUpdate(decrypt_ctx.get(), plaintext.get(), |
| &num_bytes, out.get(), input_len)); |
| EXPECT_EQ(static_cast<size_t>(num_bytes), input_len); |
| EXPECT_EQ(Bytes(test.plaintext), Bytes(plaintext.get(), input_len)); |
| } |
| } |