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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"
namespace bssl {
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;
}
} // namespace bssl
int main(int argc, char **argv) {
CRYPTO_library_init();
if (argc != 2) {
fprintf(stderr, "%s <test file>\n", argv[0]);
return 1;
}
return bssl::FileTestMain(bssl::TestPoly1305, nullptr, argv[1]);
}
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