64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/* Copyright (c) 2012-2013, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
#ifndef TOR_ONION_NTOR_H
|
|
#define TOR_ONION_NTOR_H
|
|
|
|
#include "torint.h"
|
|
#include "crypto_curve25519.h"
|
|
#include "di_ops.h"
|
|
|
|
/** State to be maintained by a client between sending an ntor onionskin
|
|
* and receiving a reply. */
|
|
typedef struct ntor_handshake_state_t ntor_handshake_state_t;
|
|
|
|
/** Length of an ntor onionskin, as sent from the client to server. */
|
|
#define NTOR_ONIONSKIN_LEN 84
|
|
/** Length of an ntor reply, as sent from server to client. */
|
|
#define NTOR_REPLY_LEN 64
|
|
|
|
#ifdef CURVE25519_ENABLED
|
|
void ntor_handshake_state_free(ntor_handshake_state_t *state);
|
|
|
|
int onion_skin_ntor_create(const uint8_t *router_id,
|
|
const curve25519_public_key_t *router_key,
|
|
ntor_handshake_state_t **handshake_state_out,
|
|
uint8_t *onion_skin_out);
|
|
|
|
int onion_skin_ntor_server_handshake(const uint8_t *onion_skin,
|
|
const di_digest256_map_t *private_keys,
|
|
const curve25519_keypair_t *junk_keypair,
|
|
const uint8_t *my_node_id,
|
|
uint8_t *handshake_reply_out,
|
|
uint8_t *key_out,
|
|
size_t key_out_len);
|
|
|
|
int onion_skin_ntor_client_handshake(
|
|
const ntor_handshake_state_t *handshake_state,
|
|
const uint8_t *handshake_reply,
|
|
uint8_t *key_out,
|
|
size_t key_out_len);
|
|
|
|
#ifdef ONION_NTOR_PRIVATE
|
|
|
|
/** Storage held by a client while waiting for an ntor reply from a server. */
|
|
struct ntor_handshake_state_t {
|
|
/** Identity digest of the router we're talking to. */
|
|
uint8_t router_id[DIGEST_LEN];
|
|
/** Onion key of the router we're talking to. */
|
|
curve25519_public_key_t pubkey_B;
|
|
|
|
/**
|
|
* Short-lived keypair for use with this handshake.
|
|
* @{ */
|
|
curve25519_secret_key_t seckey_x;
|
|
curve25519_public_key_t pubkey_X;
|
|
/** @} */
|
|
};
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|