webauthn_assertion.h

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/* Copyright (c) 2023, 2024, Oracle and/or its affiliates.
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.
 
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   as designated in a particular file or component or in included license
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   Without limiting anything contained in the foregoing, this file,
   which is part of C Driver for MySQL (Connector/C), is also subject to the
   Universal FOSS Exception, version 1.0, a copy of which can be found at
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#ifndef WEBAUTHN_ASSERTION_H_
#define WEBAUTHN_ASSERTION_H_
 
#include <string>
 
#include <assertion.h>
 
/**
   Class to initiate authentication(aka assertion in FIDO terminology) on
   client side by generating a signature by FIDO device which needs to be
   sent to server to be verified using public key stored in auth_string.
*/
class webauthn_assertion : public client_authentication::assertion {
 public:
  webauthn_assertion(bool preserve_privacy)
      : m_client_data_json{}, m_preserve_privacy{preserve_privacy} {}
  bool get_signed_challenge(unsigned char **challenge_res,
                            size_t &challenge_res_len) override;
  void set_client_data(const unsigned char *, const char *) override;
  bool sign_challenge() override;
  bool parse_challenge(const unsigned char *challenge) override;
  bool check_fido2_device(bool &is_fido2);
  size_t get_client_data_json_len();
  std::string get_client_data_json();
  bool select_credential_id();
 
 private:
  size_t calculate_client_response_length();
 
 private:
  std::string m_client_data_json;
  bool m_preserve_privacy;
};
 
extern unsigned int libfido_device_id;
 
#endif  // WEBAUTHN_ASSERTION_H_