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/**
* \file
* \author Egor Tensin <Egor.Tensin@gmail.com>
* \date 2015
* \copyright This file is licensed under the terms of the MIT License.
* See LICENSE.txt for details.
*/
#pragma once
#include "algorithm.hpp"
#include "error.hpp"
#include "mode.hpp"
#include <aes/all.h>
#include <cassert>
#include <cstddef>
#include <iostream>
#include <string>
#include <vector>
namespace aes
{
class Box
{
public:
typedef AES_BoxBlock Block;
typedef AES_BoxKey Key;
static std::string format_key(const Key& src, Algorithm algorithm)
{
AES_BoxKeyString str;
aes_box_format_key(
&str, algorithm, &src, ErrorDetailsThrowsInDestructor());
return reinterpret_cast<const char*>(&str);
}
static std::string format_block(const Block& src, Algorithm algorithm)
{
AES_BoxBlockString str;
aes_box_format_block(
&str, algorithm, &src, ErrorDetailsThrowsInDestructor());
return reinterpret_cast<const char*>(&str);
}
static void parse_block(
Block& dest,
Algorithm algorithm,
const char* src)
{
aes_box_parse_block(&dest, algorithm, src,
ErrorDetailsThrowsInDestructor());
}
static void parse_block(
Block& dest,
Algorithm algorithm,
const std::string& src)
{
parse_block(dest, algorithm, src.c_str());
}
static void parse_key(
Key& dest,
Algorithm algorithm,
const char* src)
{
aes_box_parse_key(&dest, algorithm, src,
ErrorDetailsThrowsInDestructor());
}
static void parse_key(
Key& dest,
Algorithm algorithm,
const std::string& src)
{
parse_key(dest, algorithm, src.c_str());
}
Box(Algorithm algorithm, const Key& key)
: algorithm(algorithm)
, mode(AES_ECB)
{
aes_box_init(&impl, algorithm, &key, mode, nullptr,
ErrorDetailsThrowsInDestructor());
}
Box(Algorithm algorithm, const Key& key, Mode mode, const Block& iv)
: algorithm(algorithm)
, mode(mode)
{
aes_box_init(&impl, algorithm, &key, mode, &iv,
ErrorDetailsThrowsInDestructor());
}
void encrypt_block(const Block& plaintext, Block& ciphertext)
{
aes_box_encrypt_block(
&impl, &plaintext, &ciphertext,
ErrorDetailsThrowsInDestructor());
}
void decrypt_block(const Block& ciphertext, Block& plaintext)
{
aes_box_decrypt_block(
&impl, &ciphertext, &plaintext,
ErrorDetailsThrowsInDestructor());
}
std::vector<unsigned char> encrypt_buffer(
const void* src_buf,
std::size_t src_size)
{
std::size_t dest_size;
aes_box_encrypt_buffer(
&impl,
src_buf,
src_size,
nullptr,
&dest_size,
aes::ErrorDetailsThrowsInDestructor());
std::vector<unsigned char> dest_buf;
dest_buf.resize(dest_size);
aes_box_encrypt_buffer(
&impl,
src_buf,
src_size,
dest_buf.data(),
&dest_size,
aes::ErrorDetailsThrowsInDestructor());
dest_buf.resize(dest_size);
return dest_buf;
}
std::vector<unsigned char> decrypt_buffer(
const void* src_buf,
std::size_t src_size)
{
std::size_t dest_size;
aes_box_decrypt_buffer(
&impl,
src_buf,
src_size,
nullptr,
&dest_size,
aes::ErrorDetailsThrowsInDestructor());
std::vector<unsigned char> dest_buf;
dest_buf.resize(dest_size);
aes_box_decrypt_buffer(
&impl,
src_buf,
src_size,
dest_buf.data(),
&dest_size,
aes::ErrorDetailsThrowsInDestructor());
dest_buf.resize(dest_size);
return dest_buf;
}
std::string format_block(const Block& src)
{
return format_block(src, get_algorithm());
}
std::string format_key(const Key& src)
{
return format_key(src, get_algorithm());
}
void parse_block(Block& dest, const char* src)
{
parse_block(dest, get_algorithm(), src);
}
void parse_block(Block& dest, const std::string& src)
{
parse_block(dest, src.c_str());
}
void parse_key(Key& dest, const char* src)
{
parse_key(dest, get_algorithm(), src);
}
void parse_key(Key& dest, const std::string& src)
{
parse_key(dest, src.c_str());
}
Algorithm get_algorithm() const { return algorithm; }
Mode get_mode() const { return mode; }
private:
Key key;
Algorithm algorithm;
Mode mode;
AES_Box impl;
};
}
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