include/wvdiffiehellman.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  * Copyright (C) 2003 Net Integration Technologies, Inc.
   4  *
   5  * Diffie-Hellman shared secret creation.
   6  */
   7
   8 #ifndef __WVDIFFIEHELLMAN_H
   9 #define __WVDIFFIEHELLMAN_H
  10
  11 #include <openssl/dh.h>
  12
  13 #include "wvstream.h"
  14 #include "wvlog.h"
  15
  16 class WvDiffieHellman
  17 {
  18 public:
  19     WvDiffieHellman(const unsigned char *_key, int _keylen,
  20                     BN_ULONG _generator);
  21     ~WvDiffieHellman() { DH_free(info); }
  22
  23     void get_created_secret(WvBuf &outbuf, size_t len);
  24     int get_public_value(WvBuf &outbuf, int len);
  25
  26     int pub_key_len();
  27     bool create_secret(WvBuf &inbuf, size_t in_len, WvBuf& outbuf);
  28
  29 protected:
  30     struct dh_st *info;
  31     BN_ULONG generator;
  32
  33 private:
  34
  35     WvLog log;
  36 };
  37
  38 #endif /* __WVDIFFIEHELLMAN_H */