src/test/hash_tests.cpp

   1 // Copyright (c) 2013-2016 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include <hash.h>
   6 #include <utilstrencodings.h>
   7 #include <test/test_bitcoin.h>
   8
   9 #include <vector>
  10
  11 #include <boost/test/unit_test.hpp>
  12
  13 BOOST_FIXTURE_TEST_SUITE(hash_tests, BasicTestingSetup)
  14
  15 BOOST_AUTO_TEST_CASE(murmurhash3)
  16 {
  17
  18 #define T(expected, seed, data) BOOST_CHECK_EQUAL(MurmurHash3(seed, ParseHex(data)), expected)
  19
  20     // Test MurmurHash3 with various inputs. Of course this is retested in the
  21     // bloom filter tests - they would fail if MurmurHash3() had any problems -
  22     // but is useful for those trying to implement Bitcoin libraries as a
  23     // source of test data for their MurmurHash3() primitive during
  24     // development.
  25     //
  26     // The magic number 0xFBA4C795 comes from CBloomFilter::Hash()
  27
  28     T(0x00000000, 0x00000000, "");
  29     T(0x6a396f08, 0xFBA4C795, "");
  30     T(0x81f16f39, 0xffffffff, "");
  31
  32     T(0x514e28b7, 0x00000000, "00");
  33     T(0xea3f0b17, 0xFBA4C795, "00");
  34     T(0xfd6cf10d, 0x00000000, "ff");
  35
  36     T(0x16c6b7ab, 0x00000000, "0011");
  37     T(0x8eb51c3d, 0x00000000, "001122");
  38     T(0xb4471bf8, 0x00000000, "00112233");
  39     T(0xe2301fa8, 0x00000000, "0011223344");
  40     T(0xfc2e4a15, 0x00000000, "001122334455");
  41     T(0xb074502c, 0x00000000, "00112233445566");
  42     T(0x8034d2a0, 0x00000000, "0011223344556677");
  43     T(0xb4698def, 0x00000000, "001122334455667788");
  44
  45 #undef T
  46 }
  47
  48 /*
  49    SipHash-2-4 output with
  50    k = 00 01 02 ...
  51    and
  52    in = (empty string)
  53    in = 00 (1 byte)
  54    in = 00 01 (2 bytes)
  55    in = 00 01 02 (3 bytes)
  56    ...
  57    in = 00 01 02 ... 3e (63 bytes)
  58
  59    from: https://131002.net/siphash/siphash24.c
  60 */
  61 uint64_t siphash_4_2_testvec[] = {
  62     0x726fdb47dd0e0e31, 0x74f839c593dc67fd, 0x0d6c8009d9a94f5a, 0x85676696d7fb7e2d,
  63     0xcf2794e0277187b7, 0x18765564cd99a68d, 0xcbc9466e58fee3ce, 0xab0200f58b01d137,
  64     0x93f5f5799a932462, 0x9e0082df0ba9e4b0, 0x7a5dbbc594ddb9f3, 0xf4b32f46226bada7,
  65     0x751e8fbc860ee5fb, 0x14ea5627c0843d90, 0xf723ca908e7af2ee, 0xa129ca6149be45e5,
  66     0x3f2acc7f57c29bdb, 0x699ae9f52cbe4794, 0x4bc1b3f0968dd39c, 0xbb6dc91da77961bd,
  67     0xbed65cf21aa2ee98, 0xd0f2cbb02e3b67c7, 0x93536795e3a33e88, 0xa80c038ccd5ccec8,
  68     0xb8ad50c6f649af94, 0xbce192de8a85b8ea, 0x17d835b85bbb15f3, 0x2f2e6163076bcfad,
  69     0xde4daaaca71dc9a5, 0xa6a2506687956571, 0xad87a3535c49ef28, 0x32d892fad841c342,
  70     0x7127512f72f27cce, 0xa7f32346f95978e3, 0x12e0b01abb051238, 0x15e034d40fa197ae,
  71     0x314dffbe0815a3b4, 0x027990f029623981, 0xcadcd4e59ef40c4d, 0x9abfd8766a33735c,
  72     0x0e3ea96b5304a7d0, 0xad0c42d6fc585992, 0x187306c89bc215a9, 0xd4a60abcf3792b95,
  73     0xf935451de4f21df2, 0xa9538f0419755787, 0xdb9acddff56ca510, 0xd06c98cd5c0975eb,
  74     0xe612a3cb9ecba951, 0xc766e62cfcadaf96, 0xee64435a9752fe72, 0xa192d576b245165a,
  75     0x0a8787bf8ecb74b2, 0x81b3e73d20b49b6f, 0x7fa8220ba3b2ecea, 0x245731c13ca42499,
  76     0xb78dbfaf3a8d83bd, 0xea1ad565322a1a0b, 0x60e61c23a3795013, 0x6606d7e446282b93,
  77     0x6ca4ecb15c5f91e1, 0x9f626da15c9625f3, 0xe51b38608ef25f57, 0x958a324ceb064572
  78 };
  79
  80 BOOST_AUTO_TEST_CASE(siphash)
  81 {
  82     CSipHasher hasher(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL);
  83     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x726fdb47dd0e0e31ull);
  84     static const unsigned char t0[1] = {0};
  85     hasher.Write(t0, 1);
  86     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x74f839c593dc67fdull);
  87     static const unsigned char t1[7] = {1,2,3,4,5,6,7};
  88     hasher.Write(t1, 7);
  89     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x93f5f5799a932462ull);
  90     hasher.Write(0x0F0E0D0C0B0A0908ULL);
  91     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x3f2acc7f57c29bdbull);
  92     static const unsigned char t2[2] = {16,17};
  93     hasher.Write(t2, 2);
  94     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x4bc1b3f0968dd39cull);
  95     static const unsigned char t3[9] = {18,19,20,21,22,23,24,25,26};
  96     hasher.Write(t3, 9);
  97     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x2f2e6163076bcfadull);
  98     static const unsigned char t4[5] = {27,28,29,30,31};
  99     hasher.Write(t4, 5);
 100     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x7127512f72f27cceull);
 101     hasher.Write(0x2726252423222120ULL);
 102     BOOST_CHECK_EQUAL(hasher.Finalize(),  0x0e3ea96b5304a7d0ull);
 103     hasher.Write(0x2F2E2D2C2B2A2928ULL);
 104     BOOST_CHECK_EQUAL(hasher.Finalize(),  0xe612a3cb9ecba951ull);
 105
 106     BOOST_CHECK_EQUAL(SipHashUint256(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL, uint256S("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100")), 0x7127512f72f27cceull);
 107
 108     // Check test vectors from spec, one byte at a time
 109     CSipHasher hasher2(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL);
 110     for (uint8_t x=0; x<ARRAYLEN(siphash_4_2_testvec); ++x)
 111     {
 112         BOOST_CHECK_EQUAL(hasher2.Finalize(), siphash_4_2_testvec[x]);
 113         hasher2.Write(&x, 1);
 114     }
 115     // Check test vectors from spec, eight bytes at a time
 116     CSipHasher hasher3(0x0706050403020100ULL, 0x0F0E0D0C0B0A0908ULL);
 117     for (uint8_t x=0; x<ARRAYLEN(siphash_4_2_testvec); x+=8)
 118     {
 119         BOOST_CHECK_EQUAL(hasher3.Finalize(), siphash_4_2_testvec[x]);
 120         hasher3.Write(uint64_t(x)|(uint64_t(x+1)<<8)|(uint64_t(x+2)<<16)|(uint64_t(x+3)<<24)|
 121                      (uint64_t(x+4)<<32)|(uint64_t(x+5)<<40)|(uint64_t(x+6)<<48)|(uint64_t(x+7)<<56));
 122     }
 123
 124     CHashWriter ss(SER_DISK, CLIENT_VERSION);
 125     CMutableTransaction tx;
 126     // Note these tests were originally written with tx.nVersion=1
 127     // and the test would be affected by default tx version bumps if not fixed.
 128     tx.nVersion = 1;
 129     ss << tx;
 130     BOOST_CHECK_EQUAL(SipHashUint256(1, 2, ss.GetHash()), 0x79751e980c2a0a35ULL);
 131
 132     // Check consistency between CSipHasher and SipHashUint256[Extra].
 133     FastRandomContext ctx;
 134     for (int i = 0; i < 16; ++i) {
 135         uint64_t k1 = ctx.rand64();
 136         uint64_t k2 = ctx.rand64();
 137         uint256 x = InsecureRand256();
 138         uint32_t n = ctx.rand32();
 139         uint8_t nb[4];
 140         WriteLE32(nb, n);
 141         CSipHasher sip256(k1, k2);
 142         sip256.Write(x.begin(), 32);
 143         CSipHasher sip288 = sip256;
 144         sip288.Write(nb, 4);
 145         BOOST_CHECK_EQUAL(SipHashUint256(k1, k2, x), sip256.Finalize());
 146         BOOST_CHECK_EQUAL(SipHashUint256Extra(k1, k2, x, n), sip288.Finalize());
 147     }
 148 }
 149
 150 BOOST_AUTO_TEST_SUITE_END()