mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-11 21:53:48 +01:00
68 lines
2.9 KiB
C
68 lines
2.9 KiB
C
/* Copyright (c) 2017, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
#ifndef TOR_HS_NTOR_H
|
|
#define TOR_HS_NTOR_H
|
|
|
|
#include "or.h"
|
|
|
|
/* Output length of KDF for key expansion */
|
|
#define HS_NTOR_KEY_EXPANSION_KDF_OUT_LEN \
|
|
(DIGEST256_LEN*2 + CIPHER256_KEY_LEN*2)
|
|
|
|
/* Key material needed to encode/decode INTRODUCE1 cells */
|
|
typedef struct {
|
|
/* Key used for encryption of encrypted INTRODUCE1 blob */
|
|
uint8_t enc_key[CIPHER256_KEY_LEN];
|
|
/* MAC key used to protect encrypted INTRODUCE1 blob */
|
|
uint8_t mac_key[DIGEST256_LEN];
|
|
} hs_ntor_intro_cell_keys_t;
|
|
|
|
/* Key material needed to encode/decode RENDEZVOUS1 cells */
|
|
typedef struct {
|
|
/* This is the MAC of the HANDSHAKE_INFO field */
|
|
uint8_t rend_cell_auth_mac[DIGEST256_LEN];
|
|
/* This is the key seed used to derive further rendezvous crypto keys as
|
|
* detailed in section 4.2.1 of rend-spec-ng.txt. */
|
|
uint8_t ntor_key_seed[DIGEST256_LEN];
|
|
} hs_ntor_rend_cell_keys_t;
|
|
|
|
int hs_ntor_client_get_introduce1_keys(
|
|
const ed25519_public_key_t *intro_auth_pubkey,
|
|
const curve25519_public_key_t *intro_enc_pubkey,
|
|
const curve25519_keypair_t *client_ephemeral_enc_keypair,
|
|
const uint8_t *subcredential,
|
|
hs_ntor_intro_cell_keys_t *hs_ntor_intro_cell_keys_out);
|
|
|
|
int hs_ntor_client_get_rendezvous1_keys(
|
|
const ed25519_public_key_t *intro_auth_pubkey,
|
|
const curve25519_keypair_t *client_ephemeral_enc_keypair,
|
|
const curve25519_public_key_t *intro_enc_pubkey,
|
|
const curve25519_public_key_t *service_ephemeral_rend_pubkey,
|
|
hs_ntor_rend_cell_keys_t *hs_ntor_rend_cell_keys_out);
|
|
|
|
int hs_ntor_service_get_introduce1_keys(
|
|
const ed25519_public_key_t *intro_auth_pubkey,
|
|
const curve25519_keypair_t *intro_enc_keypair,
|
|
const curve25519_public_key_t *client_ephemeral_enc_pubkey,
|
|
const uint8_t *subcredential,
|
|
hs_ntor_intro_cell_keys_t *hs_ntor_intro_cell_keys_out);
|
|
|
|
int hs_ntor_service_get_rendezvous1_keys(
|
|
const ed25519_public_key_t *intro_auth_pubkey,
|
|
const curve25519_keypair_t *intro_enc_keypair,
|
|
const curve25519_keypair_t *service_ephemeral_rend_keypair,
|
|
const curve25519_public_key_t *client_ephemeral_enc_pubkey,
|
|
hs_ntor_rend_cell_keys_t *hs_ntor_rend_cell_keys_out);
|
|
|
|
int hs_ntor_circuit_key_expansion(const uint8_t *ntor_key_seed,
|
|
size_t seed_len,
|
|
uint8_t *keys_out, size_t keys_out_len);
|
|
|
|
int hs_ntor_client_rendezvous2_mac_is_good(
|
|
const hs_ntor_rend_cell_keys_t *hs_ntor_rend_cell_keys,
|
|
const uint8_t *rcvd_mac);
|
|
|
|
#endif /* !defined(TOR_HS_NTOR_H) */
|
|
|