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/* Copyright (c) 2018, 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 <openssl/base.h>
#if !defined(NDEBUG) && !defined(BORINGSSL_FIPS) && \
!defined(BORINGSSL_SHARED_LIBRARY)
#include <functional>
#include <utility>
#include <vector>
#include <openssl/aead.h>
#include <openssl/aes.h>
#include <openssl/cpu.h>
#include <openssl/mem.h>
#include <gtest/gtest.h>
#include "internal.h"
class ImplDispatchTest : public ::testing::Test {
public:
void SetUp() override {
#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
aesni_ = OPENSSL_ia32cap_P[1] & (1 << (57 - 32));
avx_movbe_ = ((OPENSSL_ia32cap_P[1] >> 22) & 0x41) == 0x41;
ssse3_ = OPENSSL_ia32cap_P[1] & (1 << (41 - 32));
is_x86_64_ =
#if defined(OPENSSL_X86_64)
true;
#else
false;
#endif
#endif // X86 || X86_64
}
protected:
// AssertFunctionsHit takes a list of pairs (flag index, boolean), and a
// function to test. It runs the given function and asserts, for each flag
// index, that the boolean reflects whether that flag index was written or
// not, and that no other flagged functions were triggered.
void AssertFunctionsHit(std::vector<std::pair<size_t, bool>> flags,
std::function<void()> f) {
OPENSSL_memset(BORINGSSL_function_hit, 0, sizeof(BORINGSSL_function_hit));
f();
for (const auto flag : flags) {
SCOPED_TRACE(flag.first);
ASSERT_LT(flag.first, sizeof(BORINGSSL_function_hit));
EXPECT_EQ(flag.second, BORINGSSL_function_hit[flag.first] == 1);
BORINGSSL_function_hit[flag.first] = 0;
}
for (size_t i = 0; i < sizeof(BORINGSSL_function_hit); i++) {
EXPECT_EQ(0u, BORINGSSL_function_hit[i])
<< "Flag " << i << " unexpectedly hit";
}
}
#if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
bool aesni_ = false;
bool avx_movbe_ = false;
bool ssse3_ = false;
bool is_x86_64_ = false;
#endif
};
#if !defined(OPENSSL_NO_ASM) && \
(defined(OPENSSL_X86) || defined(OPENSSL_X86_64))
constexpr size_t kFlag_aes_hw_ctr32_encrypt_blocks = 0;
constexpr size_t kFlag_aes_hw_encrypt = 1;
constexpr size_t kFlag_aesni_gcm_encrypt = 2;
constexpr size_t kFlag_aes_hw_set_encrypt_key = 3;
constexpr size_t kFlag_vpaes_encrypt = 4;
constexpr size_t kFlag_vpaes_set_encrypt_key = 5;
constexpr size_t kFlag_bsaes_ctr32_encrypt_blocks = 6;
TEST_F(ImplDispatchTest, AEAD_AES_GCM) {
AssertFunctionsHit(
{
{kFlag_aes_hw_ctr32_encrypt_blocks, aesni_},
{kFlag_aes_hw_encrypt, aesni_},
{kFlag_aes_hw_set_encrypt_key, aesni_},
{kFlag_aesni_gcm_encrypt, is_x86_64_ && aesni_ && avx_movbe_},
{kFlag_vpaes_encrypt, !is_x86_64_ && ssse3_ && !aesni_},
{kFlag_vpaes_set_encrypt_key, !is_x86_64_ && ssse3_ && !aesni_},
{kFlag_bsaes_ctr32_encrypt_blocks, is_x86_64_ && ssse3_ && !aesni_},
},
[] {
const uint8_t kZeros[16] = {0};
const uint8_t kPlaintext[40] = {1, 2, 3, 4, 0};
uint8_t ciphertext[sizeof(kPlaintext) + 16];
size_t ciphertext_len;
EVP_AEAD_CTX ctx;
ASSERT_TRUE(EVP_AEAD_CTX_init(&ctx, EVP_aead_aes_128_gcm(), kZeros,
sizeof(kZeros),
EVP_AEAD_DEFAULT_TAG_LENGTH, nullptr));
ASSERT_TRUE(EVP_AEAD_CTX_seal(
&ctx, ciphertext, &ciphertext_len, sizeof(ciphertext), kZeros,
EVP_AEAD_nonce_length(EVP_aead_aes_128_gcm()), kPlaintext,
sizeof(kPlaintext), nullptr, 0));
});
}
TEST_F(ImplDispatchTest, AES_set_encrypt_key) {
AssertFunctionsHit(
{
{kFlag_aes_hw_set_encrypt_key, aesni_},
{kFlag_vpaes_set_encrypt_key, ssse3_ && !aesni_},
// BSAES will not be used for the |AES_*| functions.
},
[] {
AES_KEY key;
static const uint8_t kZeros[16] = {0};
AES_set_encrypt_key(kZeros, sizeof(kZeros) * 8, &key);
});
}
TEST_F(ImplDispatchTest, AES_single_block) {
AES_KEY key;
static const uint8_t kZeros[16] = {0};
AES_set_encrypt_key(kZeros, sizeof(kZeros) * 8, &key);
AssertFunctionsHit(
{
{kFlag_aes_hw_encrypt, aesni_},
{kFlag_vpaes_encrypt, ssse3_ && !aesni_},
// BSAES will not be used for the |AES_*| functions.
},
[&key] {
uint8_t in[AES_BLOCK_SIZE] = {0};
uint8_t out[AES_BLOCK_SIZE];
AES_encrypt(in, out, &key);
});
}
#endif // X86 || X86_64
#endif // !NDEBUG && !FIPS && !SHARED_LIBRARY
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