src/or/onion_tap.h

   1 /* Copyright (c) 2001 Matej Pfajfar.
   2  * Copyright (c) 2001-2004, Roger Dingledine.
   3  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   4  * Copyright (c) 2007-2013, The Tor Project, Inc. */
   5 /* See LICENSE for licensing information */
   6
   7 /**
   8  * \file onion_tap.h
   9  * \brief Header file for onion_tap.c.
  10  **/
  11
  12 #ifndef TOR_ONION_TAP_H
  13 #define TOR_ONION_TAP_H
  14
  15 #define TAP_ONIONSKIN_CHALLENGE_LEN (PKCS1_OAEP_PADDING_OVERHEAD+\
  16                                  CIPHER_KEY_LEN+\
  17                                  DH_KEY_LEN)
  18 #define TAP_ONIONSKIN_REPLY_LEN (DH_KEY_LEN+DIGEST_LEN)
  19
  20 int onion_skin_TAP_create(crypto_pk_t *router_key,
  21                       crypto_dh_t **handshake_state_out,
  22                       char *onion_skin_out);
  23
  24 int onion_skin_TAP_server_handshake(const char *onion_skin,
  25                                 crypto_pk_t *private_key,
  26                                 crypto_pk_t *prev_private_key,
  27                                 char *handshake_reply_out,
  28                                 char *key_out,
  29                                 size_t key_out_len);
  30
  31 int onion_skin_TAP_client_handshake(crypto_dh_t *handshake_state,
  32                                 const char *handshake_reply,
  33                                 char *key_out,
  34                                 size_t key_out_len);
  35
  36 #endif
  37