| /* |
| * Copyright (c) 2016, 2020, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| #include "precompiled.hpp" |
| #include "classfile/altHashing.hpp" |
| #include "utilities/debug.hpp" |
| #include "utilities/formatBuffer.hpp" |
| #include "unittest.hpp" |
| |
| class AltHashingTest : public ::testing::Test { |
| |
| public: |
| |
| static void testHalfsiphash_32_ByteArray() { |
| const int factor = 4; |
| |
| uint8_t vector[256]; |
| uint8_t hashes[factor * 256]; |
| |
| for (int i = 0; i < 256; i++) { |
| vector[i] = (uint8_t) i; |
| } |
| |
| // Hash subranges {}, {0}, {0,1}, {0,1,2}, ..., {0,...,255} |
| for (int i = 0; i < 256; i++) { |
| uint32_t hash = AltHashing::halfsiphash_32(256 - i, vector, i); |
| hashes[i * factor] = (uint8_t) hash; |
| hashes[i * factor + 1] = (uint8_t)(hash >> 8); |
| hashes[i * factor + 2] = (uint8_t)(hash >> 16); |
| hashes[i * factor + 3] = (uint8_t)(hash >> 24); |
| } |
| |
| // hash to get const result. |
| uint32_t final_hash = AltHashing::halfsiphash_32(0, hashes, factor*256); |
| |
| // Value found using reference implementation for the hashes array. |
| //uint64_t k = 0; // seed |
| //uint32_t reference; |
| //halfsiphash((const uint8_t*)hashes, factor*256, (const uint8_t *)&k, (uint8_t*)&reference, 4); |
| //printf("0x%x", reference); |
| |
| static const uint32_t HALFSIPHASH_32_BYTE_CHECK_VALUE = 0xd2be7fd8; |
| |
| ASSERT_EQ(HALFSIPHASH_32_BYTE_CHECK_VALUE, final_hash) << |
| err_msg( |
| "Calculated hash result not as expected. Expected " UINT32_FORMAT " got " UINT32_FORMAT, |
| HALFSIPHASH_32_BYTE_CHECK_VALUE, |
| final_hash); |
| } |
| |
| static void testHalfsiphash_32_CharArray() { |
| const int factor = 2; |
| |
| uint16_t vector[256]; |
| uint16_t hashes[factor * 256]; |
| |
| for (int i = 0; i < 256; i++) { |
| vector[i] = (uint16_t) i; |
| } |
| |
| // Hash subranges {}, {0}, {0,1}, {0,1,2}, ..., {0,...,255} |
| for (int i = 0; i < 256; i++) { |
| uint32_t hash = AltHashing::halfsiphash_32(256 - i, vector, i); |
| hashes[i * factor] = (uint16_t) hash; |
| hashes[i * factor + 1] = (uint16_t)(hash >> 16); |
| } |
| |
| // hash to get const result. |
| uint32_t final_hash = AltHashing::halfsiphash_32(0, hashes, factor*256); |
| |
| // Value found using reference implementation for the hashes array. |
| //uint64_t k = 0; // seed |
| //uint32_t reference; |
| //halfsiphash((const uint8_t*)hashes, 2*factor*256, (const uint8_t *)&k, (uint8_t*)&reference, 4); |
| //printf("0x%x", reference); |
| |
| static const uint32_t HALFSIPHASH_32_CHAR_CHECK_VALUE = 0x428bf8a5; |
| |
| ASSERT_EQ(HALFSIPHASH_32_CHAR_CHECK_VALUE, final_hash) << |
| err_msg( |
| "Calculated hash result not as expected. Expected " UINT32_FORMAT " got " UINT32_FORMAT, |
| HALFSIPHASH_32_CHAR_CHECK_VALUE, |
| final_hash); |
| } |
| |
| // Test against sample hashes published with the reference implementation: |
| // https://github.com/veorq/SipHash |
| static void testHalfsiphash_64_FromReference() { |
| |
| const uint64_t seed = 0x0706050403020100; |
| const uint64_t results[16] = { |
| 0xc83cb8b9591f8d21, 0xa12ee55b178ae7d5, |
| 0x8c85e4bc20e8feed, 0x99c7f5ae9f1fc77b, |
| 0xb5f37b5fd2aa3673, 0xdba7ee6f0a2bf51b, |
| 0xf1a63fae45107470, 0xb516001efb5f922d, |
| 0x6c6211d8469d7028, 0xdc7642ec407ad686, |
| 0x4caec8671cc8385b, 0x5ab1dc27adf3301e, |
| 0x3e3ea94bc0a8eaa9, 0xe150f598795a4402, |
| 0x1d5ff142f992a4a1, 0x60e426bf902876d6 |
| }; |
| uint32_t vector[16]; |
| |
| for (int i = 0; i < 16; i++) |
| vector[i] = 0x03020100 + i * 0x04040404; |
| |
| for (int i = 0; i < 16; i++) { |
| uint64_t hash = AltHashing::halfsiphash_64(seed, vector, i); |
| ASSERT_EQ(results[i], hash) << |
| err_msg( |
| "Calculated hash result not as expected. Round %d: " |
| "Expected " UINT64_FORMAT_X " got " UINT64_FORMAT_X "\n", |
| i, |
| results[i], |
| hash); |
| } |
| } |
| }; |
| |
| TEST_F(AltHashingTest, halfsiphash_test_ByteArray) { |
| AltHashingTest::testHalfsiphash_32_ByteArray(); |
| } |
| TEST_F(AltHashingTest, halfsiphash_test_CharArray) { |
| AltHashingTest::testHalfsiphash_32_CharArray(); |
| } |
| TEST_F(AltHashingTest, halfsiphash_test_FromReference) { |
| AltHashingTest::testHalfsiphash_64_FromReference(); |
| } |