lib/siphash_kunit.c

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
   2 /* Copyright (C) 2016-2022 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
   3  *
   4  * Test cases for siphash.c
   5  *
   6  * SipHash: a fast short-input PRF
   7  * https://131002.net/siphash/
   8  *
   9  * This implementation is specifically for SipHash2-4 for a secure PRF
  10  * and HalfSipHash1-3/SipHash1-3 for an insecure PRF only suitable for
  11  * hashtables.
  12  */
  13
  14 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  15
  16 #include <kunit/test.h>
  17 #include <linux/siphash.h>
  18 #include <linux/kernel.h>
  19 #include <linux/string.h>
  20 #include <linux/errno.h>
  21 #include <linux/module.h>
  22
  23 /* Test vectors taken from reference source available at:
  24  *     https://github.com/veorq/SipHash
  25  */
  26
  27 static const siphash_key_t test_key_siphash =
  28         {{ 0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL }};
  29
  30 static const u64 test_vectors_siphash[64] = {
  31         0x726fdb47dd0e0e31ULL, 0x74f839c593dc67fdULL, 0x0d6c8009d9a94f5aULL,
  32         0x85676696d7fb7e2dULL, 0xcf2794e0277187b7ULL, 0x18765564cd99a68dULL,
  33         0xcbc9466e58fee3ceULL, 0xab0200f58b01d137ULL, 0x93f5f5799a932462ULL,
  34         0x9e0082df0ba9e4b0ULL, 0x7a5dbbc594ddb9f3ULL, 0xf4b32f46226bada7ULL,
  35         0x751e8fbc860ee5fbULL, 0x14ea5627c0843d90ULL, 0xf723ca908e7af2eeULL,
  36         0xa129ca6149be45e5ULL, 0x3f2acc7f57c29bdbULL, 0x699ae9f52cbe4794ULL,
  37         0x4bc1b3f0968dd39cULL, 0xbb6dc91da77961bdULL, 0xbed65cf21aa2ee98ULL,
  38         0xd0f2cbb02e3b67c7ULL, 0x93536795e3a33e88ULL, 0xa80c038ccd5ccec8ULL,
  39         0xb8ad50c6f649af94ULL, 0xbce192de8a85b8eaULL, 0x17d835b85bbb15f3ULL,
  40         0x2f2e6163076bcfadULL, 0xde4daaaca71dc9a5ULL, 0xa6a2506687956571ULL,
  41         0xad87a3535c49ef28ULL, 0x32d892fad841c342ULL, 0x7127512f72f27cceULL,
  42         0xa7f32346f95978e3ULL, 0x12e0b01abb051238ULL, 0x15e034d40fa197aeULL,
  43         0x314dffbe0815a3b4ULL, 0x027990f029623981ULL, 0xcadcd4e59ef40c4dULL,
  44         0x9abfd8766a33735cULL, 0x0e3ea96b5304a7d0ULL, 0xad0c42d6fc585992ULL,
  45         0x187306c89bc215a9ULL, 0xd4a60abcf3792b95ULL, 0xf935451de4f21df2ULL,
  46         0xa9538f0419755787ULL, 0xdb9acddff56ca510ULL, 0xd06c98cd5c0975ebULL,
  47         0xe612a3cb9ecba951ULL, 0xc766e62cfcadaf96ULL, 0xee64435a9752fe72ULL,
  48         0xa192d576b245165aULL, 0x0a8787bf8ecb74b2ULL, 0x81b3e73d20b49b6fULL,
  49         0x7fa8220ba3b2eceaULL, 0x245731c13ca42499ULL, 0xb78dbfaf3a8d83bdULL,
  50         0xea1ad565322a1a0bULL, 0x60e61c23a3795013ULL, 0x6606d7e446282b93ULL,
  51         0x6ca4ecb15c5f91e1ULL, 0x9f626da15c9625f3ULL, 0xe51b38608ef25f57ULL,
  52         0x958a324ceb064572ULL
  53 };
  54
  55 #if BITS_PER_LONG == 64
  56 static const hsiphash_key_t test_key_hsiphash =
  57         {{ 0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL }};
  58
  59 static const u32 test_vectors_hsiphash[64] = {
  60         0x050fc4dcU, 0x7d57ca93U, 0x4dc7d44dU,
  61         0xe7ddf7fbU, 0x88d38328U, 0x49533b67U,
  62         0xc59f22a7U, 0x9bb11140U, 0x8d299a8eU,
  63         0x6c063de4U, 0x92ff097fU, 0xf94dc352U,
  64         0x57b4d9a2U, 0x1229ffa7U, 0xc0f95d34U,
  65         0x2a519956U, 0x7d908b66U, 0x63dbd80cU,
  66         0xb473e63eU, 0x8d297d1cU, 0xa6cce040U,
  67         0x2b45f844U, 0xa320872eU, 0xdae6c123U,
  68         0x67349c8cU, 0x705b0979U, 0xca9913a5U,
  69         0x4ade3b35U, 0xef6cd00dU, 0x4ab1e1f4U,
  70         0x43c5e663U, 0x8c21d1bcU, 0x16a7b60dU,
  71         0x7a8ff9bfU, 0x1f2a753eU, 0xbf186b91U,
  72         0xada26206U, 0xa3c33057U, 0xae3a36a1U,
  73         0x7b108392U, 0x99e41531U, 0x3f1ad944U,
  74         0xc8138825U, 0xc28949a6U, 0xfaf8876bU,
  75         0x9f042196U, 0x68b1d623U, 0x8b5114fdU,
  76         0xdf074c46U, 0x12cc86b3U, 0x0a52098fU,
  77         0x9d292f9aU, 0xa2f41f12U, 0x43a71ed0U,
  78         0x73f0bce6U, 0x70a7e980U, 0x243c6d75U,
  79         0xfdb71513U, 0xa67d8a08U, 0xb7e8f148U,
  80         0xf7a644eeU, 0x0f1837f2U, 0x4b6694e0U,
  81         0xb7bbb3a8U
  82 };
  83 #else
  84 static const hsiphash_key_t test_key_hsiphash =
  85         {{ 0x03020100U, 0x07060504U }};
  86
  87 static const u32 test_vectors_hsiphash[64] = {
  88         0x5814c896U, 0xe7e864caU, 0xbc4b0e30U,
  89         0x01539939U, 0x7e059ea6U, 0x88e3d89bU,
  90         0xa0080b65U, 0x9d38d9d6U, 0x577999b1U,
  91         0xc839caedU, 0xe4fa32cfU, 0x959246eeU,
  92         0x6b28096cU, 0x66dd9cd6U, 0x16658a7cU,
  93         0xd0257b04U, 0x8b31d501U, 0x2b1cd04bU,
  94         0x06712339U, 0x522aca67U, 0x911bb605U,
  95         0x90a65f0eU, 0xf826ef7bU, 0x62512debU,
  96         0x57150ad7U, 0x5d473507U, 0x1ec47442U,
  97         0xab64afd3U, 0x0a4100d0U, 0x6d2ce652U,
  98         0x2331b6a3U, 0x08d8791aU, 0xbc6dda8dU,
  99         0xe0f6c934U, 0xb0652033U, 0x9b9851ccU,
 100         0x7c46fb7fU, 0x732ba8cbU, 0xf142997aU,
 101         0xfcc9aa1bU, 0x05327eb2U, 0xe110131cU,
 102         0xf9e5e7c0U, 0xa7d708a6U, 0x11795ab1U,
 103         0x65671619U, 0x9f5fff91U, 0xd89c5267U,
 104         0x007783ebU, 0x95766243U, 0xab639262U,
 105         0x9c7e1390U, 0xc368dda6U, 0x38ddc455U,
 106         0xfa13d379U, 0x979ea4e8U, 0x53ecd77eU,
 107         0x2ee80657U, 0x33dbb66aU, 0xae3f0577U,
 108         0x88b4c4ccU, 0x3e7f480bU, 0x74c1ebf8U,
 109         0x87178304U
 110 };
 111 #endif
 112
 113 #define chk(hash, vector, fmt...)                       \
 114         KUNIT_EXPECT_EQ_MSG(test, hash, vector, fmt)
 115
 116 static void siphash_test(struct kunit *test)
 117 {
 118         u8 in[64] __aligned(SIPHASH_ALIGNMENT);
 119         u8 in_unaligned[65] __aligned(SIPHASH_ALIGNMENT);
 120         u8 i;
 121
 122         for (i = 0; i < 64; ++i) {
 123                 in[i] = i;
 124                 in_unaligned[i + 1] = i;
 125                 chk(siphash(in, i, &test_key_siphash),
 126                     test_vectors_siphash[i],
 127                     "siphash self-test aligned %u: FAIL", i + 1);
 128                 chk(siphash(in_unaligned + 1, i, &test_key_siphash),
 129                     test_vectors_siphash[i],
 130                     "siphash self-test unaligned %u: FAIL", i + 1);
 131                 chk(hsiphash(in, i, &test_key_hsiphash),
 132                     test_vectors_hsiphash[i],
 133                     "hsiphash self-test aligned %u: FAIL", i + 1);
 134                 chk(hsiphash(in_unaligned + 1, i, &test_key_hsiphash),
 135                     test_vectors_hsiphash[i],
 136                     "hsiphash self-test unaligned %u: FAIL", i + 1);
 137         }
 138         chk(siphash_1u64(0x0706050403020100ULL, &test_key_siphash),
 139             test_vectors_siphash[8],
 140             "siphash self-test 1u64: FAIL");
 141         chk(siphash_2u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
 142                          &test_key_siphash),
 143             test_vectors_siphash[16],
 144             "siphash self-test 2u64: FAIL");
 145         chk(siphash_3u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
 146                          0x1716151413121110ULL, &test_key_siphash),
 147             test_vectors_siphash[24],
 148             "siphash self-test 3u64: FAIL");
 149         chk(siphash_4u64(0x0706050403020100ULL, 0x0f0e0d0c0b0a0908ULL,
 150                          0x1716151413121110ULL, 0x1f1e1d1c1b1a1918ULL,
 151                          &test_key_siphash),
 152             test_vectors_siphash[32],
 153             "siphash self-test 4u64: FAIL");
 154         chk(siphash_1u32(0x03020100U, &test_key_siphash),
 155             test_vectors_siphash[4],
 156             "siphash self-test 1u32: FAIL");
 157         chk(siphash_2u32(0x03020100U, 0x07060504U, &test_key_siphash),
 158             test_vectors_siphash[8],
 159             "siphash self-test 2u32: FAIL");
 160         chk(siphash_3u32(0x03020100U, 0x07060504U,
 161                          0x0b0a0908U, &test_key_siphash),
 162             test_vectors_siphash[12],
 163             "siphash self-test 3u32: FAIL");
 164         chk(siphash_4u32(0x03020100U, 0x07060504U,
 165                          0x0b0a0908U, 0x0f0e0d0cU, &test_key_siphash),
 166             test_vectors_siphash[16],
 167             "siphash self-test 4u32: FAIL");
 168         chk(hsiphash_1u32(0x03020100U, &test_key_hsiphash),
 169             test_vectors_hsiphash[4],
 170             "hsiphash self-test 1u32: FAIL");
 171         chk(hsiphash_2u32(0x03020100U, 0x07060504U, &test_key_hsiphash),
 172             test_vectors_hsiphash[8],
 173             "hsiphash self-test 2u32: FAIL");
 174         chk(hsiphash_3u32(0x03020100U, 0x07060504U,
 175                           0x0b0a0908U, &test_key_hsiphash),
 176             test_vectors_hsiphash[12],
 177             "hsiphash self-test 3u32: FAIL");
 178         chk(hsiphash_4u32(0x03020100U, 0x07060504U,
 179                           0x0b0a0908U, 0x0f0e0d0cU, &test_key_hsiphash),
 180             test_vectors_hsiphash[16],
 181             "hsiphash self-test 4u32: FAIL");
 182 }
 183
 184 static struct kunit_case siphash_test_cases[] = {
 185         KUNIT_CASE(siphash_test),
 186         {}
 187 };
 188
 189 static struct kunit_suite siphash_test_suite = {
 190         .name = "siphash",
 191         .test_cases = siphash_test_cases,
 192 };
 193
 194 kunit_test_suite(siphash_test_suite);
 195
 196 MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
 197 MODULE_LICENSE("Dual BSD/GPL");