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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2017 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#ifndef NDN_CXX_SECURITY_TRANSFORM_PUBLIC_KEY_HPP
#define NDN_CXX_SECURITY_TRANSFORM_PUBLIC_KEY_HPP
#include "../security-common.hpp"
#include "../../encoding/buffer.hpp"
namespace ndn {
namespace security {
namespace transform {
class VerifierFilter;
/**
* @brief Abstraction of public key in crypto transformation
*/
class PublicKey : noncopyable
{
public:
class Error : public std::runtime_error
{
public:
explicit
Error(const std::string& what)
: std::runtime_error(what)
{
}
};
friend class VerifierFilter;
public:
/**
* @brief Create a public key instance
*
* One must call loadXXXX(...) to load public key.
*/
PublicKey();
~PublicKey();
/**
* @brief Get the type of the public key
*/
KeyType
getKeyType() const;
/**
* @brief Load the public key in PKCS#8 format from a buffer @p buf
*/
void
loadPkcs8(const uint8_t* buf, size_t size);
/**
* @brief Load the public key in PKCS#8 format from a stream @p is
*/
void
loadPkcs8(std::istream& is);
/**
* @brief Load the public key in base64-encoded PKCS#8 format from a buffer @p buf
*/
void
loadPkcs8Base64(const uint8_t* buf, size_t size);
/**
* @brief Load the public key in base64-encoded PKCS#8 format from a stream @p is
*/
void
loadPkcs8Base64(std::istream& is);
/**
* @brief Save the public key in PKCS#8 format into a stream @p os
*/
void
savePkcs8(std::ostream& os) const;
/**
* @brief Save the public key in base64-encoded PKCS#8 format into a stream @p os
*/
void
savePkcs8Base64(std::ostream& os) const;
/**
* @return Cipher text of @p plainText encrypted using the public key.
*
* Only RSA encryption is supported for now.
*/
ConstBufferPtr
encrypt(const uint8_t* plainText, size_t plainLen) const;
private:
/**
* @return A pointer to an EVP_PKEY instance.
*
* One need to explicitly cast the return value to EVP_PKEY*.
*/
void*
getEvpPkey() const;
private:
ConstBufferPtr
toPkcs8() const;
ConstBufferPtr
rsaEncrypt(const uint8_t* plainText, size_t plainLen) const;
private:
class Impl;
const unique_ptr<Impl> m_impl;
};
} // namespace transform
} // namespace security
} // namespace ndn
#endif // NDN_CXX_SECURITY_TRANSFORM_PUBLIC_KEY_HPP