6757fbf8e3
BUG=129 Change-Id: Ifcdacb2f5f59fd03b757f88778ceb1e672208fd9 Reviewed-on: https://boringssl-review.googlesource.com/16744 Reviewed-by: Adam Langley <agl@google.com> Commit-Queue: Adam Langley <agl@google.com> CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/* Copyright (c) 2015, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include <stdio.h>
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#include <string.h>
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#include <vector>
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#include <gtest/gtest.h>
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#include <openssl/poly1305.h>
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#include "../internal.h"
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#include "../test/file_test.h"
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#include "../test/test_util.h"
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static void TestSIMD(unsigned excess, const std::vector<uint8_t> &key,
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const std::vector<uint8_t> &in,
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const std::vector<uint8_t> &mac) {
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poly1305_state state;
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CRYPTO_poly1305_init(&state, key.data());
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size_t done = 0;
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// Feed 16 bytes in. Some implementations begin in non-SIMD mode and upgrade
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// on-demand. Stress the upgrade path.
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size_t todo = 16;
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if (todo > in.size()) {
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todo = in.size();
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}
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CRYPTO_poly1305_update(&state, in.data(), todo);
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done += todo;
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for (;;) {
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// Feed 128 + |excess| bytes to test SIMD mode.
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if (done + 128 + excess > in.size()) {
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break;
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}
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CRYPTO_poly1305_update(&state, in.data() + done, 128 + excess);
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done += 128 + excess;
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// Feed |excess| bytes to ensure SIMD mode can handle short inputs.
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if (done + excess > in.size()) {
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break;
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}
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CRYPTO_poly1305_update(&state, in.data() + done, excess);
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done += excess;
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}
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// Consume the remainder and finish.
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CRYPTO_poly1305_update(&state, in.data() + done, in.size() - done);
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// |CRYPTO_poly1305_finish| requires a 16-byte-aligned output.
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alignas(16) uint8_t out[16];
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CRYPTO_poly1305_finish(&state, out);
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EXPECT_EQ(Bytes(out), Bytes(mac)) << "SIMD pattern " << excess << " failed.";
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}
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TEST(Poly1305Test, TestVectors) {
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FileTestGTest("crypto/poly1305/poly1305_tests.txt", [](FileTest *t) {
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std::vector<uint8_t> key, in, mac;
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ASSERT_TRUE(t->GetBytes(&key, "Key"));
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ASSERT_TRUE(t->GetBytes(&in, "Input"));
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ASSERT_TRUE(t->GetBytes(&mac, "MAC"));
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ASSERT_EQ(32u, key.size());
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ASSERT_EQ(16u, mac.size());
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// Test single-shot operation.
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poly1305_state state;
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CRYPTO_poly1305_init(&state, key.data());
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CRYPTO_poly1305_update(&state, in.data(), in.size());
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// |CRYPTO_poly1305_finish| requires a 16-byte-aligned output.
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alignas(16) uint8_t out[16];
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CRYPTO_poly1305_finish(&state, out);
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EXPECT_EQ(Bytes(out), Bytes(mac)) << "Single-shot Poly1305 failed.";
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// Test streaming byte-by-byte.
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CRYPTO_poly1305_init(&state, key.data());
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for (size_t i = 0; i < in.size(); i++) {
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CRYPTO_poly1305_update(&state, &in[i], 1);
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}
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CRYPTO_poly1305_finish(&state, out);
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EXPECT_EQ(Bytes(out), Bytes(mac)) << "Streaming Poly1305 failed.";
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// Test SIMD stress patterns. OpenSSL's AVX2 assembly needs a multiple of
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// four blocks, so test up to three blocks of excess.
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TestSIMD(0, key, in, mac);
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TestSIMD(16, key, in, mac);
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TestSIMD(32, key, in, mac);
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TestSIMD(48, key, in, mac);
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});
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}
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