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/*
* Copyright (c) 2021, [Ribose Inc](https://www.ribose.com).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RNP_CIPHER_OSSL_HPP
#define RNP_CIPHER_OSSL_HPP
#include "cipher.hpp"
#include <openssl/evp.h>
#include <repgp/repgp_def.h>
class Cipher_OpenSSL : public Cipher {
public:
static std::unique_ptr<Cipher_OpenSSL> encryption(pgp_symm_alg_t cipher,
pgp_cipher_mode_t mode,
size_t tag_size,
bool disable_padding);
static std::unique_ptr<Cipher_OpenSSL> decryption(pgp_symm_alg_t cipher,
pgp_cipher_mode_t mode,
size_t tag_size,
bool disable_padding);
bool set_key(const uint8_t *key, size_t key_length) override;
bool set_iv(const uint8_t *iv, size_t iv_length) override;
bool set_ad(const uint8_t *ad, size_t ad_length) override;
size_t update_granularity() const override;
// input_length should not exceed INT_MAX
bool update(uint8_t * output,
size_t output_length,
size_t * output_written,
const uint8_t *input,
size_t input_length,
size_t * input_consumed) override;
bool finish(uint8_t * output,
size_t output_length,
size_t * output_written,
const uint8_t *input,
size_t input_length,
size_t * input_consumed) override;
virtual ~Cipher_OpenSSL();
private:
Cipher_OpenSSL(pgp_symm_alg_t alg, EVP_CIPHER_CTX *ctx, size_t tag_size, bool encrypt);
EVP_CIPHER_CTX *m_ctx;
size_t m_block_size;
size_t m_tag_size;
bool m_encrypt;
static EVP_CIPHER_CTX *create(pgp_symm_alg_t alg,
const std::string &name,
bool encrypt,
size_t tag_size,
bool disable_padding);
};
#endif
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