private-key.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2019 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_PRIVATE_KEY_HPP
#define NDN_CXX_SECURITY_TRANSFORM_PRIVATE_KEY_HPP

#include "ndn-cxx/security/security-common.hpp"
#include "ndn-cxx/encoding/buffer.hpp"

namespace ndn {

class KeyParams;

namespace security {
namespace transform {

class PrivateKey : noncopyable
{
public:
  class Error : public std::runtime_error
  {
  public:
    using std::runtime_error::runtime_error;
  };

  typedef function<int(char* buf, size_t bufSize, bool shouldConfirm)> PasswordCallback;

public:
  PrivateKey();

  ~PrivateKey();

  KeyType
  getKeyType() const;

  size_t
  getKeySize() const;

  ConstBufferPtr
  getKeyDigest(DigestAlgorithm algo) const;

  void
  loadRaw(KeyType type, const uint8_t* buf, size_t size);

  void
  loadPkcs1(const uint8_t* buf, size_t size);

  void
  loadPkcs1(std::istream& is);

  void
  loadPkcs1Base64(const uint8_t* buf, size_t size);

  void
  loadPkcs1Base64(std::istream& is);

  void
  loadPkcs8(const uint8_t* buf, size_t size, const char* pw, size_t pwLen);

  void
  loadPkcs8(const uint8_t* buf, size_t size, PasswordCallback pwCallback = nullptr);

  void
  loadPkcs8(std::istream& is, const char* pw, size_t pwLen);

  void
  loadPkcs8(std::istream& is, PasswordCallback pwCallback = nullptr);

  void
  loadPkcs8Base64(const uint8_t* buf, size_t size, const char* pw, size_t pwLen);

  void
  loadPkcs8Base64(const uint8_t* buf, size_t size, PasswordCallback pwCallback = nullptr);

  void
  loadPkcs8Base64(std::istream& is, const char* pw, size_t pwLen);

  void
  loadPkcs8Base64(std::istream& is, PasswordCallback pwCallback = nullptr);

  void
  savePkcs1(std::ostream& os) const;

  void
  savePkcs1Base64(std::ostream& os) const;

  void
  savePkcs8(std::ostream& os, const char* pw, size_t pwLen) const;

  void
  savePkcs8(std::ostream& os, PasswordCallback pwCallback = nullptr) const;

  void
  savePkcs8Base64(std::ostream& os, const char* pw, size_t pwLen) const;

  void
  savePkcs8Base64(std::ostream& os, PasswordCallback pwCallback = nullptr) const;

  ConstBufferPtr
  derivePublicKey() const;

  ConstBufferPtr
  decrypt(const uint8_t* cipherText, size_t cipherLen) const;

private:
  friend class SignerFilter;
  friend class VerifierFilter;

  void*
  getEvpPkey() const;

private:
  ConstBufferPtr
  toPkcs1() const;

  ConstBufferPtr
  toPkcs8(const char* pw, size_t pwLen) const;

  ConstBufferPtr
  toPkcs8(PasswordCallback pwCallback = nullptr) const;

  ConstBufferPtr
  rsaDecrypt(const uint8_t* cipherText, size_t cipherLen) const;

private:
  friend unique_ptr<PrivateKey> generatePrivateKey(const KeyParams&);

  static unique_ptr<PrivateKey>
  generateRsaKey(uint32_t keySize);

  static unique_ptr<PrivateKey>
  generateEcKey(uint32_t keySize);

  static unique_ptr<PrivateKey>
  generateHmacKey(uint32_t keySize);

private:
  class Impl;
  const unique_ptr<Impl> m_impl;
};

unique_ptr<PrivateKey>
generatePrivateKey(const KeyParams& keyParams);

} // namespace transform
} // namespace security
} // namespace ndn

#endif // NDN_CXX_SECURITY_TRANSFORM_PRIVATE_KEY_HPP