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// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
// This file is part of the "AES tools" project.
// For details, see https://github.com/egor-tensin/aes-tools.
// Distributed under the MIT License.
#pragma once
#include <aesxx/all.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/program_options.hpp>
#include <istream>
#include <string>
#include <unordered_map>
inline std::istream& operator>>(std::istream& is, aes::Mode& dest)
{
std::string src;
is >> src;
static const std::unordered_map<std::string, aes::Mode> lookup_table =
{
{"ecb", AES_ECB},
{"cbc", AES_CBC},
{"cfb", AES_CFB},
{"ofb", AES_OFB},
{"ctr", AES_CTR},
};
const auto it = lookup_table.find(boost::algorithm::to_lower_copy(src));
if (it == lookup_table.cend())
throw boost::program_options::invalid_option_value(src);
dest = it->second;
return is;
}
inline std::istream& operator>>(std::istream& is, aes::Algorithm& dest)
{
std::string src;
is >> src;
static const std::unordered_map<std::string, aes::Algorithm> lookup_table =
{
{"aes128", AES_AES128},
{"aes192", AES_AES192},
{"aes256", AES_AES256},
};
const auto it = lookup_table.find(boost::algorithm::to_lower_copy(src));
if (it == lookup_table.cend())
throw boost::program_options::invalid_option_value(src);
dest = it->second;
return is;
}
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