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/* Copyright (c) 2001 Matej Pfajfar.
* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2019, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file onion_crypto.h
* \brief Header file for onion_crypto.c.
**/
#ifndef TOR_ONION_CRYPTO_H
#define TOR_ONION_CRYPTO_H
typedef struct server_onion_keys_t {
uint8_t my_identity[DIGEST_LEN];
crypto_pk_t *onion_key;
crypto_pk_t *last_onion_key;
struct di_digest256_map_t *curve25519_key_map;
struct curve25519_keypair_t *junk_keypair;
} server_onion_keys_t;
void onion_handshake_state_release(onion_handshake_state_t *state);
int onion_skin_create(int type,
const extend_info_t *node,
onion_handshake_state_t *state_out,
uint8_t *onion_skin_out);
int onion_skin_server_handshake(int type,
const uint8_t *onion_skin, size_t onionskin_len,
const server_onion_keys_t *keys,
uint8_t *reply_out,
uint8_t *keys_out, size_t key_out_len,
uint8_t *rend_nonce_out);
int onion_skin_client_handshake(int type,
const onion_handshake_state_t *handshake_state,
const uint8_t *reply, size_t reply_len,
uint8_t *keys_out, size_t key_out_len,
uint8_t *rend_authenticator_out,
const char **msg_out);
server_onion_keys_t *server_onion_keys_new(void);
void server_onion_keys_free_(server_onion_keys_t *keys);
#define server_onion_keys_free(keys) \
FREE_AND_NULL(server_onion_keys_t, server_onion_keys_free_, (keys))
#endif
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