2 * chap_ms.h - Challenge Handshake Authentication Protocol definitions.
4 * Copyright (c) 1995 Eric Rosenquist. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
18 * 3. The name(s) of the authors of this software must not be used to
19 * endorse or promote products derived from this software without
20 * prior written permission.
22 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
23 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
24 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
25 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
26 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
27 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
28 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
30 * $Id: chap_ms.h,v 1.13 2004/11/15 22:13:26 paulus Exp $
33 #ifndef __CHAPMS_INCLUDE__
35 #define MD4_SIGNATURE_SIZE 16 /* 16 bytes in a MD4 message digest */
36 #define MAX_NT_PASSWORD 256 /* Max (Unicode) chars in an NT pass */
38 #define MS_CHAP_RESPONSE_LEN 49 /* Response length for MS-CHAP */
39 #define MS_CHAP2_RESPONSE_LEN 49 /* Response length for MS-CHAPv2 */
40 #define MS_AUTH_RESPONSE_LENGTH 40 /* MS-CHAPv2 authenticator response, */
43 /* E=eeeeeeeeee error codes for MS-CHAP failure messages. */
44 #define MS_CHAP_ERROR_RESTRICTED_LOGON_HOURS 646
45 #define MS_CHAP_ERROR_ACCT_DISABLED 647
46 #define MS_CHAP_ERROR_PASSWD_EXPIRED 648
47 #define MS_CHAP_ERROR_NO_DIALIN_PERMISSION 649
48 #define MS_CHAP_ERROR_AUTHENTICATION_FAILURE 691
49 #define MS_CHAP_ERROR_CHANGING_PASSWORD 709
52 * Offsets within the response field for MS-CHAP
54 #define MS_CHAP_LANMANRESP 0
55 #define MS_CHAP_LANMANRESP_LEN 24
56 #define MS_CHAP_NTRESP 24
57 #define MS_CHAP_NTRESP_LEN 24
58 #define MS_CHAP_USENT 48
61 * Offsets within the response field for MS-CHAP2
63 #define MS_CHAP2_PEER_CHALLENGE 0
64 #define MS_CHAP2_PEER_CHAL_LEN 16
65 #define MS_CHAP2_RESERVED_LEN 8
66 #define MS_CHAP2_NTRESP 24
67 #define MS_CHAP2_NTRESP_LEN 24
68 #define MS_CHAP2_FLAGS 48
71 #include "mppe.h" /* MPPE_MAX_KEY_LEN */
72 extern u_char mppe_send_key[MPPE_MAX_KEY_LEN];
73 extern u_char mppe_recv_key[MPPE_MAX_KEY_LEN];
74 extern int mppe_keys_set;
76 /* These values are the RADIUS attribute values--see RFC 2548. */
77 #define MPPE_ENC_POL_ENC_ALLOWED 1
78 #define MPPE_ENC_POL_ENC_REQUIRED 2
79 #define MPPE_ENC_TYPES_RC4_40 2
80 #define MPPE_ENC_TYPES_RC4_128 4
82 /* used by plugins (using above values) */
83 extern void set_mppe_enc_types(int, int);
86 /* Are we the authenticator or authenticatee? For MS-CHAPv2 key derivation. */
87 #define MS_CHAP2_AUTHENTICATEE 0
88 #define MS_CHAP2_AUTHENTICATOR 1
90 void ChapMS (u_char *, char *, int, u_char *);
91 void ChapMS2 (u_char *, u_char *, char *, char *, int,
92 u_char *, u_char[MS_AUTH_RESPONSE_LENGTH+1], int);
94 void mppe_set_keys (u_char *, u_char[MD4_SIGNATURE_SIZE]);
95 void mppe_set_keys2(u_char PasswordHashHash[MD4_SIGNATURE_SIZE],
96 u_char NTResponse[24], int IsServer);
99 void ChallengeHash (u_char[16], u_char *, char *, u_char[8]);
101 void GenerateAuthenticatorResponse(u_char PasswordHashHash[MD4_SIGNATURE_SIZE],
102 u_char NTResponse[24], u_char PeerChallenge[16],
103 u_char *rchallenge, char *username,
104 u_char authResponse[MS_AUTH_RESPONSE_LENGTH+1]);
106 void chapms_init(void);
108 #define __CHAPMS_INCLUDE__
109 #endif /* __CHAPMS_INCLUDE__ */