text: /*
   * Copyright (C) 2015 Southern Storm Software, Pty Ltd.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef CRYPTO_h
  #define CRYPTO_h
  
  #include <inttypes.h>
  #include <stddef.h>
  
  void clean(void *dest, size_t size);
  
  template <typename T>
  inline void clean(T &var)
  {
      clean(&var, sizeof(T));
  }
  
  bool secure_compare(const void *data1, const void *data2, size_t len);
  
  #if defined(ESP8266)
  extern "C" void system_soft_wdt_feed(void);
  #define crypto_feed_watchdog() system_soft_wdt_feed()
  #else
  #define crypto_feed_watchdog() do { ; } while (0)
  #endif
  
  #endif
  