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implicitfield
47146b00c9
Previously, there were two slightly different implementations of this in the Kernel and in LibCrypto. This patch removes those, and replaces them with an implementation that seeks to combine the best aspects of both while not being a drop-in replacement for either. Two new tests are also included.
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright (c) 2021, Peter Bocan <[email protected]>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCrypto/Checksum/Adler32.h>
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#include <LibCrypto/Checksum/CRC32.h>
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#include <LibCrypto/Checksum/cksum.h>
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#include <LibTest/TestCase.h>
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#include <arpa/inet.h>
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TEST_CASE(test_adler32)
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{
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auto do_test = [](ReadonlyBytes input, u32 expected_result) {
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auto digest = Crypto::Checksum::Adler32(input).digest();
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EXPECT_EQ(digest, expected_result);
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};
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do_test(""sv.bytes(), 0x1);
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do_test("a"sv.bytes(), 0x00620062);
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do_test("abc"sv.bytes(), 0x024d0127);
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do_test("message digest"sv.bytes(), 0x29750586);
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do_test("abcdefghijklmnopqrstuvwxyz"sv.bytes(), 0x90860b20);
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}
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TEST_CASE(test_cksum)
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{
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auto do_test = [](ReadonlyBytes input, u32 expected_result) {
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auto digest = Crypto::Checksum::cksum(input).digest();
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EXPECT_EQ(digest, expected_result);
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};
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do_test(""sv.bytes(), 0xFFFFFFFF);
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do_test("The quick brown fox jumps over the lazy dog"sv.bytes(), 0x7BAB9CE8);
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do_test("various CRC algorithms input data"sv.bytes(), 0xEFB5CA4F);
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}
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TEST_CASE(test_cksum_atomic_digest)
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{
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auto compare = [](u32 digest, u32 expected_result) {
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EXPECT_EQ(digest, expected_result);
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};
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Crypto::Checksum::cksum cksum;
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cksum.update("Well"sv.bytes());
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cksum.update(" hello "sv.bytes());
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cksum.digest();
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cksum.update("friends"sv.bytes());
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auto digest = cksum.digest();
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compare(digest, 0x2D65C7E0);
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}
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TEST_CASE(test_crc32)
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{
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auto do_test = [](ReadonlyBytes input, u32 expected_result) {
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auto digest = Crypto::Checksum::CRC32(input).digest();
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EXPECT_EQ(digest, expected_result);
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};
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do_test(""sv.bytes(), 0x0);
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do_test("The quick brown fox jumps over the lazy dog"sv.bytes(), 0x414FA339);
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do_test("various CRC algorithms input data"sv.bytes(), 0x9BD366AE);
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}
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