aes256_encrypt.h

/*
**  UICore
**  Copyright (c) 1997-2015 The UICore Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries UICore may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Mark Page
*/


#pragma once

#include <memory>
#include "../System/databuffer.h"

namespace uicore
{
    class AES256_Encrypt
    {
    public:
        static std::shared_ptr<AES256_Encrypt> create();

        virtual DataBufferPtr data() const = 0;

        static const int iv_size = 16;
        static const int key_size = 32;
        static const int block_size = 16;

        virtual void reset() = 0;

        virtual void set_iv(const unsigned char iv[iv_size]) = 0;

        virtual void set_key(const unsigned char key[key_size]) = 0;

        virtual void set_padding(bool value = true, bool use_pkcs7 = true, unsigned int num_additional_padded_blocks = 0) = 0;

        virtual void add(const void *data, int size) = 0;

        virtual void add(const DataBufferPtr &data) = 0;

        virtual void calculate() = 0;
    };

    typedef std::shared_ptr<AES256_Encrypt> AES256_EncryptPtr;
}