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Tests: test_check: Test corner cases of CLMUL CRC64.
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@ -50,6 +50,22 @@ static uint8_t *sha256_xz_data;
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#endif
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#ifdef HAVE_CHECK_CRC64
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static const uint8_t *
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get_random256(uint32_t *seed)
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{
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static uint8_t buf[256];
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for (size_t i = 0; i < sizeof(buf); ++i) {
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*seed = *seed * 1103515245 + 12345;
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buf[i] = (uint8_t)(*seed >> 22);
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}
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return buf;
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}
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#endif
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static void
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test_lzma_crc32(void)
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{
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@ -99,6 +115,17 @@ test_lzma_crc64(void)
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for (size_t i = 0; i < sizeof(test_string); ++i)
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crc = lzma_crc64(test_string + i, 1, crc);
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assert_uint_eq(crc, test_vector);
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// Test 4: The CLMUL implementation works on 16-byte chunks.
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// Test combination of different start and end alignments
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// and also short buffer lengths where special handling is needed.
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uint32_t seed = 29;
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crc = 0x96E30D5184B7FA2C; // Random initial value
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for (size_t start = 0; start < 32; ++start)
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for (size_t size = 1; size < 256 - 32; ++size)
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crc = lzma_crc64(get_random256(&seed), size, crc);
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assert_uint_eq(crc, 0x23AB787177231C9F);
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#endif
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}
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