Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 1 | /* Copyright (c) 2015, Google Inc. |
| 2 | * |
| 3 | * Permission to use, copy, modify, and/or distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 10 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 12 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 13 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| 14 | |
| 15 | #include <stdio.h> |
| 16 | #include <string.h> |
| 17 | |
| 18 | #include <vector> |
| 19 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 20 | #include <gtest/gtest.h> |
| 21 | |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 22 | #include <openssl/poly1305.h> |
| 23 | |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 24 | #include "../internal.h" |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 25 | #include "../test/file_test.h" |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 26 | #include "../test/test_util.h" |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 27 | |
| 28 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 29 | static void TestSIMD(unsigned excess, const std::vector<uint8_t> &key, |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 30 | const std::vector<uint8_t> &in, |
| 31 | const std::vector<uint8_t> &mac) { |
| 32 | poly1305_state state; |
| 33 | CRYPTO_poly1305_init(&state, key.data()); |
| 34 | |
| 35 | size_t done = 0; |
| 36 | |
| 37 | // Feed 16 bytes in. Some implementations begin in non-SIMD mode and upgrade |
| 38 | // on-demand. Stress the upgrade path. |
| 39 | size_t todo = 16; |
| 40 | if (todo > in.size()) { |
| 41 | todo = in.size(); |
| 42 | } |
| 43 | CRYPTO_poly1305_update(&state, in.data(), todo); |
| 44 | done += todo; |
| 45 | |
| 46 | for (;;) { |
| 47 | // Feed 128 + |excess| bytes to test SIMD mode. |
| 48 | if (done + 128 + excess > in.size()) { |
| 49 | break; |
| 50 | } |
| 51 | CRYPTO_poly1305_update(&state, in.data() + done, 128 + excess); |
| 52 | done += 128 + excess; |
| 53 | |
| 54 | // Feed |excess| bytes to ensure SIMD mode can handle short inputs. |
| 55 | if (done + excess > in.size()) { |
| 56 | break; |
| 57 | } |
| 58 | CRYPTO_poly1305_update(&state, in.data() + done, excess); |
| 59 | done += excess; |
| 60 | } |
| 61 | |
| 62 | // Consume the remainder and finish. |
| 63 | CRYPTO_poly1305_update(&state, in.data() + done, in.size() - done); |
| 64 | |
| 65 | // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output. |
| 66 | alignas(16) uint8_t out[16]; |
| 67 | CRYPTO_poly1305_finish(&state, out); |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 68 | EXPECT_EQ(Bytes(out), Bytes(mac)) << "SIMD pattern " << excess << " failed."; |
David Benjamin | 4969cc9 | 2016-04-22 15:02:23 -0400 | [diff] [blame] | 69 | } |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 70 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 71 | TEST(Poly1305Test, TestVectors) { |
| 72 | FileTestGTest("crypto/poly1305/poly1305_tests.txt", [](FileTest *t) { |
| 73 | std::vector<uint8_t> key, in, mac; |
| 74 | ASSERT_TRUE(t->GetBytes(&key, "Key")); |
| 75 | ASSERT_TRUE(t->GetBytes(&in, "Input")); |
| 76 | ASSERT_TRUE(t->GetBytes(&mac, "MAC")); |
| 77 | ASSERT_EQ(32u, key.size()); |
| 78 | ASSERT_EQ(16u, mac.size()); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 79 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 80 | // Test single-shot operation. |
| 81 | poly1305_state state; |
| 82 | CRYPTO_poly1305_init(&state, key.data()); |
| 83 | CRYPTO_poly1305_update(&state, in.data(), in.size()); |
| 84 | // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output. |
| 85 | alignas(16) uint8_t out[16]; |
| 86 | CRYPTO_poly1305_finish(&state, out); |
| 87 | EXPECT_EQ(Bytes(out), Bytes(mac)) << "Single-shot Poly1305 failed."; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 88 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 89 | // Test streaming byte-by-byte. |
| 90 | CRYPTO_poly1305_init(&state, key.data()); |
| 91 | for (size_t i = 0; i < in.size(); i++) { |
| 92 | CRYPTO_poly1305_update(&state, &in[i], 1); |
| 93 | } |
| 94 | CRYPTO_poly1305_finish(&state, out); |
| 95 | EXPECT_EQ(Bytes(out), Bytes(mac)) << "Streaming Poly1305 failed."; |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 96 | |
Robert Sloan | 8ff0355 | 2017-06-14 12:40:58 -0700 | [diff] [blame^] | 97 | // Test SIMD stress patterns. OpenSSL's AVX2 assembly needs a multiple of |
| 98 | // four blocks, so test up to three blocks of excess. |
| 99 | TestSIMD(0, key, in, mac); |
| 100 | TestSIMD(16, key, in, mac); |
| 101 | TestSIMD(32, key, in, mac); |
| 102 | TestSIMD(48, key, in, mac); |
| 103 | }); |
Kenny Root | b849459 | 2015-09-25 02:29:14 +0000 | [diff] [blame] | 104 | } |