| // Copyright 2023 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cryptohome/crc.h" |
| |
| #include <stdint.h> |
| #include <vector> |
| |
| #include <gmock/gmock.h> |
| #include <gtest/gtest.h> |
| |
| namespace cryptohome { |
| namespace { |
| |
| using ::testing::Eq; |
| |
| // Various spot check tests for a few different CRC8 values. This is not |
| // intended to be comprehensive. |
| TEST(Crc8Test, Empty) { |
| // We don't actually use the stored value here, but C++ does not allow |
| // zero-length arrays. |
| const char kData[] = {0}; |
| EXPECT_THAT(Crc8(kData, 0), Eq(0)); |
| } |
| |
| TEST(Crc8Test, ZeroArray) { |
| const char kData[] = {0, 0, 0, 0, 0, 0, 0, 0}; |
| EXPECT_THAT(Crc8(kData, sizeof(kData)), Eq(0)); |
| } |
| |
| TEST(Crc8Test, SomeBytes) { |
| const char kData[] = {1, 2, 3, 4, 5, 6, 7, 8}; |
| EXPECT_THAT(Crc8(kData, sizeof(kData)), Eq(0x3e)); |
| } |
| |
| TEST(Crc8Test, MoreBytes) { |
| const char kData[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}; |
| EXPECT_THAT(Crc8(kData, sizeof(kData)), Eq(0xb0)); |
| } |
| |
| TEST(Crc8Test, AllOnes) { |
| const unsigned char kData[] = {0xff, 0xff, 0xff, 0xff, |
| 0xff, 0xff, 0xff, 0xff}; |
| EXPECT_THAT(Crc8(kData, sizeof(kData)), Eq(0xd7)); |
| } |
| |
| // TODO(b/168049518): Move to libchrome. |
| TEST(Crc32Test, TestVector1) { |
| const std::vector<uint8_t> data = {0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00}; |
| uint32_t sum = Crc32(data.data(), data.size()); |
| EXPECT_EQ(sum, 0x6522DF69); |
| } |
| |
| TEST(Crc32Test, TestVector2) { |
| const std::vector<uint8_t> data = {0xFF, 0xFF, 0xFF, 0xFF, |
| 0xFF, 0xFF, 0xFF, 0xFF}; |
| uint32_t sum = Crc32(data.data(), data.size()); |
| EXPECT_EQ(sum, 0x2144DF1C); |
| } |
| |
| TEST(Crc32Test, TestVector3) { |
| const std::vector<uint8_t> data = { |
| 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}; |
| uint32_t sum = Crc32(data.data(), data.size()); |
| EXPECT_EQ(sum, 0x91267E8A); |
| } |
| |
| TEST(Crc32Test, TestVector4) { |
| const std::vector<uint8_t> data = { |
| 0x1F, 0x1E, 0x1D, 0x1C, 0x1B, 0x1A, 0x19, 0x18, 0x17, 0x16, 0x15, |
| 0x14, 0x13, 0x12, 0x11, 0x10, 0x0F, 0x0E, 0x0D, 0x0C, 0x0B, 0x0A, |
| 0x09, 0x08, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00}; |
| uint32_t sum = Crc32(data.data(), data.size()); |
| EXPECT_EQ(sum, 0x9AB0EF72); |
| } |
| |
| } // namespace |
| } // namespace cryptohome |