tpm.hpp

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
#ifndef NDN_TPM_HPP
#define NDN_TPM_HPP

#include <map>
#include "../../name.hpp"
#include "../key-params.hpp"

namespace ndn {

class TpmKeyHandle;
class TpmBackEnd;

class Tpm {
public:
  class Error : public std::runtime_error
  {
  public:
    Error(const std::string& what)
    : std::runtime_error(what)
    {
    }
  };

  std::string
  getTpmLocator() const;

  bool
  hasKey(const Name& keyName) const;

  Blob
  getPublicKey(const Name& keyName) const;

  Blob
  sign
    (const uint8_t* data, size_t dataLength, const Name& keyName,
     DigestAlgorithm digestAlgorithm) const;

  Blob
  decrypt
   (const uint8_t* cipherText, size_t cipherTextLength,
    const Name& keyName) const;

  // TPM Management

  bool
  isTerminalMode() const;

  void
  setTerminalMode(bool isTerminal) const;

  bool
  isTpmLocked() const;

  bool
  unlockTpm(const uint8_t* password, size_t passwordLength) const;

private:
  friend class KeyChain;
  friend class SafeBag;

  /*
   * Create a new TPM instance with the specified location. This constructor
   * should only be called by KeyChain.
   * @param scheme The scheme for the TPM.
   * @param location The location for the TPM.
   * @param backEnd The TPM back-end implementation.
   */
  Tpm(const std::string& scheme, const std::string& location,
      const ptr_lib::shared_ptr<TpmBackEnd>& backEnd);

  TpmBackEnd*
  getBackEnd() { return backEnd_.get(); }

  Name
  createKey(const Name& identityName, const KeyParams& params);

  void
  deleteKey(const Name& keyName);

  Blob
  exportPrivateKey
    (const Name& keyName, const uint8_t* password, size_t passwordLength);

  void
  importPrivateKey
    (const Name& keyName, const uint8_t* pkcs8, size_t pkcs8Length,
     const uint8_t* password, size_t passwordLength);

  const TpmKeyHandle*
  findKey(const Name& keyName) const;

  // Disable the copy constructor and assignment operator.
  Tpm(const Tpm& other);
  Tpm& operator=(const Tpm& other);

  std::string scheme_;
  std::string location_;

  std::map<Name, ptr_lib::shared_ptr<TpmKeyHandle>> keys_;

  ptr_lib::shared_ptr<TpmBackEnd> backEnd_;
};

}

#endif