| /* Copyright 2016 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Tests crc32 sw implementation. |
| */ |
| |
| #include "common.h" |
| #include "console.h" |
| #include "crc.h" |
| #include "crc8.h" |
| #include "test_util.h" |
| #include "util.h" |
| |
| // test that static version matches context version |
| static int test_static_version(void) |
| { |
| uint32_t crc; |
| const uint32_t input = 0xdeadbeef; |
| |
| crc32_init(); |
| crc32_hash32(input); |
| |
| crc32_ctx_init(&crc); |
| crc32_ctx_hash32(&crc, input); |
| |
| TEST_ASSERT(crc32_result() == crc32_ctx_result(&crc)); |
| |
| return EC_SUCCESS; |
| } |
| |
| // test that context bytes at a time matches static word at time |
| static int test_8(void) |
| { |
| uint32_t crc; |
| const uint32_t input = 0xdeadbeef; |
| const uint8_t *p = (const uint8_t *) &input; |
| int i; |
| |
| crc32_init(); |
| crc32_hash32(input); |
| |
| crc32_ctx_init(&crc); |
| for (i = 0; i < sizeof(input); ++i) |
| crc32_ctx_hash8(&crc, p[i]); |
| |
| TEST_ASSERT(crc32_result() == crc32_ctx_result(&crc)); |
| |
| return EC_SUCCESS; |
| } |
| |
| // http://www.febooti.com/products/filetweak/members/hash-and-crc/test-vectors/ |
| static int test_kat0(void) |
| { |
| uint32_t crc; |
| int i; |
| const char input[] = "The quick brown fox jumps over the lazy dog"; |
| |
| crc32_ctx_init(&crc); |
| for (i = 0; i < strlen(input); ++i) |
| crc32_ctx_hash8(&crc, input[i]); |
| TEST_ASSERT(crc32_ctx_result(&crc) == 0x414fa339); |
| |
| return EC_SUCCESS; |
| } |
| |
| static int test_cros_crc8(void) |
| { |
| uint8_t buffer[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 8 }; |
| |
| int crc = cros_crc8(buffer, 10); |
| |
| /* Verifies polynomial values of 0x07 representing x^8 + x^2 + x + 1 */ |
| TEST_EQ(crc, 170, "%d"); |
| |
| return EC_SUCCESS; |
| } |
| |
| void run_test(int argc, char **argv) |
| { |
| test_reset(); |
| |
| RUN_TEST(test_static_version); |
| RUN_TEST(test_8); |
| RUN_TEST(test_kat0); |
| RUN_TEST(test_cros_crc8); |
| |
| test_print_result(); |
| } |