// Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <emmintrin.h>

#ifndef USE_AES_NI
#include <openssl/aes.h>
#endif

namespace psi {

using block = __m128i;

class AES {
public:
    AES() {}

    AES(const block& user_key);

    AES(const AES& other) = delete;

    AES& operator=(const AES& other) = delete;

    void set_key(const block& user_key);

    void ecb_enc_block(const block& plaintext, block& cyphertext) const;

    block ecb_enc_block(const block& plaintext) const;

    void ecb_enc_blocks(const block* plaintexts, size_t block_num,
                        block* ciphertext) const;
private:
#ifdef USE_AES_NI
    block _round_key[11];
#else
    AES_KEY _aes_key;
#endif
};

} // namespace psi