tpm.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2025 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
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#ifndef NDN_CXX_SECURITY_TPM_TPM_HPP
#define NDN_CXX_SECURITY_TPM_TPM_HPP
 
#include "ndn-cxx/name.hpp"
#include "ndn-cxx/security/key-params.hpp"
#include "ndn-cxx/security/tpm/key-handle.hpp"
 
#include <unordered_map>
#include <boost/logic/tribool.hpp>
 
namespace ndn::security {
 
namespace transform {
class PrivateKey;
} // namespace transform
 
class KeyChain;
 
namespace tpm {
 
class BackEnd;
 
class Tpm : noncopyable
{
public:
  class Error : public std::runtime_error
  {
  public:
    using std::runtime_error::runtime_error;
  };
 
  ~Tpm();
 
  const std::string&
  getTpmLocator() const
  {
    return m_locator;
  }
 
  bool
  hasKey(const Name& keyName) const;
 
  ConstBufferPtr
  getPublicKey(const Name& keyName) const;
 
  ConstBufferPtr
  sign(const InputBuffers& bufs, const Name& keyName, DigestAlgorithm digestAlgorithm) const;
 
  [[nodiscard]] boost::logic::tribool
  verify(const InputBuffers& bufs, span<const uint8_t> sig, const Name& keyName,
         DigestAlgorithm digestAlgorithm) const;
 
  ConstBufferPtr
  decrypt(span<const uint8_t> buf, const Name& keyName) const;
 
NDN_CXX_PUBLIC_WITH_TESTS_ELSE_PRIVATE: // operations accessible only by KeyChain
  Tpm(const std::string& locator, unique_ptr<BackEnd> impl);
 
  Name
  createKey(const Name& identityName, const KeyParams& params);
 
  void
  deleteKey(const Name& keyName);
 
  ConstBufferPtr
  exportPrivateKey(const Name& keyName, const char* pw, size_t pwLen) const;
 
  void
  importPrivateKey(const Name& keyName, span<const uint8_t> pkcs8, const char* pw, size_t pwLen);
 
  void
  importPrivateKey(const Name& keyName, shared_ptr<transform::PrivateKey> key);
 
  void
  clearKeyCache()
  {
    m_keys.clear();
  }
 
private:
  const KeyHandle*
  findKey(const Name& keyName) const;
 
private:
  const std::string m_locator;
  const unique_ptr<BackEnd> m_backEnd;
 
  mutable std::unordered_map<Name, unique_ptr<KeyHandle>> m_keys;
 
  friend KeyChain;
};
 
} // namespace tpm
 
using tpm::Tpm;
 
} // namespace ndn::security
 
#endif // NDN_CXX_SECURITY_TPM_TPM_HPP