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/*
* This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef TRINITYCORE_RSA_H
#define TRINITYCORE_RSA_H
#include "Define.h"
#include <openssl/evp.h>
#include <array>
#include <memory>
#include <string>
#include <vector>
namespace Trinity
{
namespace Crypto
{
class TC_COMMON_API RsaSignature
{
public:
class TC_COMMON_API DigestGenerator
{
public:
struct EVP_MD_Deleter
{
void operator()(EVP_MD* md) const;
};
virtual ~DigestGenerator() = default;
virtual std::unique_ptr<EVP_MD, EVP_MD_Deleter> GetGenerator() const = 0;
virtual OSSL_LIB_CTX* GetLib() const = 0;
virtual std::unique_ptr<OSSL_PARAM[]> GetParams() const = 0;
};
class TC_COMMON_API SHA256 : public DigestGenerator
{
public:
std::unique_ptr<EVP_MD, EVP_MD_Deleter> GetGenerator() const override;
OSSL_LIB_CTX* GetLib() const override;
std::unique_ptr<OSSL_PARAM[]> GetParams() const override;
};
class TC_COMMON_API HMAC_SHA256 : public DigestGenerator
{
public:
explicit HMAC_SHA256(uint8 const* key, size_t keyLength) : _key(key), _keyLength(keyLength) { }
std::unique_ptr<EVP_MD, EVP_MD_Deleter> GetGenerator() const override;
OSSL_LIB_CTX* GetLib() const override;
std::unique_ptr<OSSL_PARAM[]> GetParams() const override;
private:
uint8 const* _key;
size_t _keyLength;
};
RsaSignature();
RsaSignature(RsaSignature const& other);
RsaSignature(RsaSignature&& other) noexcept;
~RsaSignature();
RsaSignature& operator=(RsaSignature const& right);
RsaSignature& operator=(RsaSignature&& right) noexcept;
bool LoadKeyFromFile(std::string const& fileName);
bool LoadKeyFromString(std::string const& keyPem);
template <std::size_t N>
bool Sign(std::array<uint8, N> const& message, DigestGenerator& generator, std::vector<uint8>& output)
{
return this->Sign(message.data(), message.size(), generator, output);
}
bool Sign(uint8 const* message, std::size_t messageLength, DigestGenerator& generator, std::vector<uint8>& output);
private:
EVP_MD_CTX* _ctx = nullptr;
EVP_PKEY* _key = nullptr;
};
}
}
#endif // TRINITYCORE_RSA_H
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