block-cipher.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2022 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
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 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
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#ifndef NDN_CXX_SECURITY_TRANSFORM_BLOCK_CIPHER_HPP
#define NDN_CXX_SECURITY_TRANSFORM_BLOCK_CIPHER_HPP
 
#include "ndn-cxx/security/transform/transform-base.hpp"
#include "ndn-cxx/security/security-common.hpp"
 
namespace ndn {
namespace security {
namespace transform {
 
class BlockCipher final : public Transform
{
public:
  BlockCipher(BlockCipherAlgorithm algo, CipherOperator op,
              span<const uint8_t> key, span<const uint8_t> iv);
 
  ~BlockCipher() final;
 
private:
  void
  preTransform() final;
 
  size_t
  convert(span<const uint8_t> data) final;
 
  void
  finalize() final;
 
  void
  fillOutputBuffer();
 
  bool
  isConverterEmpty() const;
 
private:
  void
  initializeAesCbc(span<const uint8_t> key, span<const uint8_t> iv, CipherOperator op);
 
private:
  class Impl;
  const unique_ptr<Impl> m_impl;
};
 
unique_ptr<Transform>
blockCipher(BlockCipherAlgorithm algo, CipherOperator op,
            span<const uint8_t> key, span<const uint8_t> iv);
 
[[deprecated("use the overload that takes span<>")]]
inline unique_ptr<Transform>
blockCipher(BlockCipherAlgorithm algo, CipherOperator op,
            const uint8_t* key, size_t keyLen,
            const uint8_t* iv, size_t ivLen)
{
  return blockCipher(algo, op, {key, keyLen}, {iv, ivLen});
}
 
} // namespace transform
} // namespace security
} // namespace ndn
 
#endif // NDN_CXX_SECURITY_TRANSFORM_BLOCK_CIPHER_HPP