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- /* 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(mac.data(), mac.size(), out, 16)) {
- 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(mac.data(), mac.size(), out, 16)) {
- 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]);
- }
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