ssl_init.h

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#ifndef SSL_INIT_CLASS
#define SSL_INIT_CLASS
 
/*****************************************************************************\
*                                                                             *
*  Name   : SSL initialization helper                                         *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 2005-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/
 
#include <basis/byte_array.h>
#include <mathematics/chaos.h>
 
#include <openssl/opensslv.h>
 
// forward.
struct ossl_provider_st;
 
namespace crypto {
 
 
// we define NEWER_OPENSSL for those places where we're using more recent versions.
// this forces the code to choose newer methods over deprecated ones.
#if OPENSSL_VERSION_NUMBER > 0x10100000L
  #define NEWER_OPENSSL
#endif
 
class ssl_init : public virtual basis::nameable
{
public:
  ssl_init();
  ~ssl_init();
 
  DEFINE_CLASS_NAME("ssl_init");
 
  basis::byte_array random_bytes(int length) const;
 
  const mathematics::chaos &randomizer() const;
 
private:
  mathematics::chaos c_rando;  
  // we hang onto our providers so we can clean them up on exit.
  ossl_provider_st *c_default_provider;
  ossl_provider_st *c_legacy_provider;
};
 
extern const ssl_init &static_ssl_initializer();
 
} //namespace.
 
#endif