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.
40 #define MAX_NT_PASSWORD 256 /* Max (Unicode) chars in an NT pass */
42 #define MS_CHAP_RESPONSE_LEN 49 /* Response length for MS-CHAP */
43 #define MS_CHAP2_RESPONSE_LEN 49 /* Response length for MS-CHAPv2 */
44 #define MS_AUTH_RESPONSE_LENGTH 40 /* MS-CHAPv2 authenticator response, */
45 #define MS_AUTH_NTRESP_LEN 24 /* Length of NT-response field */
48 /* E=eeeeeeeeee error codes for MS-CHAP failure messages. */
49 #define MS_CHAP_ERROR_RESTRICTED_LOGON_HOURS 646
50 #define MS_CHAP_ERROR_ACCT_DISABLED 647
51 #define MS_CHAP_ERROR_PASSWD_EXPIRED 648
52 #define MS_CHAP_ERROR_NO_DIALIN_PERMISSION 649
53 #define MS_CHAP_ERROR_AUTHENTICATION_FAILURE 691
54 #define MS_CHAP_ERROR_CHANGING_PASSWORD 709
57 * Offsets within the response field for MS-CHAP
59 #define MS_CHAP_LANMANRESP 0
60 #define MS_CHAP_LANMANRESP_LEN 24
61 #define MS_CHAP_NTRESP 24
62 #define MS_CHAP_NTRESP_LEN 24
63 #define MS_CHAP_USENT 48
66 * Offsets within the response field for MS-CHAP2
68 #define MS_CHAP2_PEER_CHALLENGE 0
69 #define MS_CHAP2_PEER_CHAL_LEN 16
70 #define MS_CHAP2_RESERVED_LEN 8
71 #define MS_CHAP2_NTRESP 24
72 #define MS_CHAP2_NTRESP_LEN 24
73 #define MS_CHAP2_FLAGS 48
75 /* Are we the authenticator or authenticatee? For MS-CHAPv2 key derivation. */
76 #define MS_CHAP2_AUTHENTICATEE 0
77 #define MS_CHAP2_AUTHENTICATOR 1
79 void ChapMS (u_char *, char *, int, u_char *);
80 void ChapMS2 (u_char *, u_char *, char *, char *, int,
81 u_char *, u_char[MS_AUTH_RESPONSE_LENGTH+1], int);
83 void ChallengeHash (u_char[16], u_char *, char *, u_char[8]);
87 * PasswordHashHash - 16 bytes representing the NT Password Hash Hash
88 * NTResponse - 24 bytes represending the NTResponse parameter
89 * PeerChallenge - 16 bytes challange for peer
90 * rchallenge - 16 bytes challenge provided by peer
91 * authResponse - 24 + 1 byte to store the authenticator response
93 void GenerateAuthenticatorResponse(unsigned char *PasswordHashHash,
94 unsigned char *NTResponse, unsigned char *PeerChallenge,
95 unsigned char *rchallenge, char *username,
96 unsigned char *authResponse);
98 void chapms_init(void);
104 #endif /* PPP_CHAPMS_H */