1/*
2 * WPA Supplicant / shared MSCHAPV2 helper functions / RFC 2433 / RFC 2759
3 * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#ifndef MS_FUNCS_H
10#define MS_FUNCS_H
11
12int generate_nt_response(const u8 *auth_challenge, const u8 *peer_challenge,
13			 const u8 *username, size_t username_len,
14			 const u8 *password, size_t password_len,
15			 u8 *response);
16int generate_nt_response_pwhash(const u8 *auth_challenge,
17				const u8 *peer_challenge,
18				const u8 *username, size_t username_len,
19				const u8 *password_hash,
20				u8 *response);
21int generate_authenticator_response(const u8 *password, size_t password_len,
22				    const u8 *peer_challenge,
23				    const u8 *auth_challenge,
24				    const u8 *username, size_t username_len,
25				    const u8 *nt_response, u8 *response);
26int generate_authenticator_response_pwhash(
27	const u8 *password_hash,
28	const u8 *peer_challenge, const u8 *auth_challenge,
29	const u8 *username, size_t username_len,
30	const u8 *nt_response, u8 *response);
31int nt_challenge_response(const u8 *challenge, const u8 *password,
32			  size_t password_len, u8 *response);
33
34void challenge_response(const u8 *challenge, const u8 *password_hash,
35			u8 *response);
36int challenge_hash(const u8 *peer_challenge, const u8 *auth_challenge,
37		   const u8 *username, size_t username_len, u8 *challenge);
38int nt_password_hash(const u8 *password, size_t password_len,
39		     u8 *password_hash);
40int hash_nt_password_hash(const u8 *password_hash, u8 *password_hash_hash);
41int get_master_key(const u8 *password_hash_hash, const u8 *nt_response,
42		   u8 *master_key);
43int get_asymetric_start_key(const u8 *master_key, u8 *session_key,
44			    size_t session_key_len, int is_send,
45			    int is_server);
46int __must_check encrypt_pw_block_with_password_hash(
47	const u8 *password, size_t password_len,
48	const u8 *password_hash, u8 *pw_block);
49int __must_check new_password_encrypted_with_old_nt_password_hash(
50	const u8 *new_password, size_t new_password_len,
51	const u8 *old_password, size_t old_password_len,
52	u8 *encrypted_pw_block);
53void nt_password_hash_encrypted_with_block(const u8 *password_hash,
54					   const u8 *block, u8 *cypher);
55int old_nt_password_hash_encrypted_with_new_nt_password_hash(
56	const u8 *new_password, size_t new_password_len,
57	const u8 *old_password, size_t old_password_len,
58	u8 *encrypted_password_hash);
59
60#endif /* MS_FUNCS_H */
61