| /* Copyright (c) 2015, Google Inc. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <vector> |
| |
| #include <openssl/crypto.h> |
| #include <openssl/poly1305.h> |
| |
| #include "../internal.h" |
| #include "../test/file_test.h" |
| |
| |
| static bool TestSIMD(FileTest *t, unsigned excess, |
| const std::vector<uint8_t> &key, |
| const std::vector<uint8_t> &in, |
| const std::vector<uint8_t> &mac) { |
| poly1305_state state; |
| CRYPTO_poly1305_init(&state, key.data()); |
| |
| size_t done = 0; |
| |
| // Feed 16 bytes in. Some implementations begin in non-SIMD mode and upgrade |
| // on-demand. Stress the upgrade path. |
| size_t todo = 16; |
| if (todo > in.size()) { |
| todo = in.size(); |
| } |
| CRYPTO_poly1305_update(&state, in.data(), todo); |
| done += todo; |
| |
| for (;;) { |
| // Feed 128 + |excess| bytes to test SIMD mode. |
| if (done + 128 + excess > in.size()) { |
| break; |
| } |
| CRYPTO_poly1305_update(&state, in.data() + done, 128 + excess); |
| done += 128 + excess; |
| |
| // Feed |excess| bytes to ensure SIMD mode can handle short inputs. |
| if (done + excess > in.size()) { |
| break; |
| } |
| CRYPTO_poly1305_update(&state, in.data() + done, excess); |
| done += excess; |
| } |
| |
| // Consume the remainder and finish. |
| CRYPTO_poly1305_update(&state, in.data() + done, in.size() - done); |
| |
| // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output. |
| alignas(16) uint8_t out[16]; |
| CRYPTO_poly1305_finish(&state, out); |
| if (!t->ExpectBytesEqual(out, 16, mac.data(), mac.size())) { |
| t->PrintLine("SIMD pattern %u failed.", excess); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool TestPoly1305(FileTest *t, void *arg) { |
| std::vector<uint8_t> key, in, mac; |
| if (!t->GetBytes(&key, "Key") || |
| !t->GetBytes(&in, "Input") || |
| !t->GetBytes(&mac, "MAC")) { |
| return false; |
| } |
| if (key.size() != 32 || mac.size() != 16) { |
| t->PrintLine("Invalid test"); |
| return false; |
| } |
| |
| // Test single-shot operation. |
| poly1305_state state; |
| CRYPTO_poly1305_init(&state, key.data()); |
| CRYPTO_poly1305_update(&state, in.data(), in.size()); |
| // |CRYPTO_poly1305_finish| requires a 16-byte-aligned output. |
| alignas(16) uint8_t out[16]; |
| CRYPTO_poly1305_finish(&state, out); |
| if (!t->ExpectBytesEqual(out, 16, mac.data(), mac.size())) { |
| t->PrintLine("Single-shot Poly1305 failed."); |
| return false; |
| } |
| |
| // Test streaming byte-by-byte. |
| CRYPTO_poly1305_init(&state, key.data()); |
| for (size_t i = 0; i < in.size(); i++) { |
| CRYPTO_poly1305_update(&state, &in[i], 1); |
| } |
| CRYPTO_poly1305_finish(&state, out); |
| if (!t->ExpectBytesEqual(out, 16, mac.data(), mac.size())) { |
| t->PrintLine("Streaming Poly1305 failed."); |
| return false; |
| } |
| |
| // Test SIMD stress patterns. OpenSSL's AVX2 assembly needs a multiple of |
| // four blocks, so test up to three blocks of excess. |
| if (!TestSIMD(t, 0, key, in, mac) || |
| !TestSIMD(t, 16, key, in, mac) || |
| !TestSIMD(t, 32, key, in, mac) || |
| !TestSIMD(t, 48, key, in, mac)) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| int main(int argc, char **argv) { |
| CRYPTO_library_init(); |
| |
| if (argc != 2) { |
| fprintf(stderr, "%s <test file>\n", argv[0]); |
| return 1; |
| } |
| |
| return FileTestMain(TestPoly1305, nullptr, argv[1]); |
| } |