4 * Copyright (c) International Business Machines Corp., 2002,2007
5 * Author(s): Steve French (sfrench@us.ibm.com)
7 * This library is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU Lesser General Public License as published
9 * by the Free Software Foundation; either version 2.1 of the License, or
10 * (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
15 * the GNU Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #define NTLMSSP_SIGNATURE "NTLMSSP"
24 #define NtLmNegotiate cpu_to_le32(1)
25 #define NtLmChallenge cpu_to_le32(2)
26 #define NtLmAuthenticate cpu_to_le32(3)
27 #define UnknownMessage cpu_to_le32(8)
30 #define NTLMSSP_NEGOTIATE_UNICODE 0x01 /* Text strings are in unicode */
31 #define NTLMSSP_NEGOTIATE_OEM 0x02 /* Text strings are in OEM */
32 #define NTLMSSP_REQUEST_TARGET 0x04 /* Server return its auth realm */
33 #define NTLMSSP_NEGOTIATE_SIGN 0x0010 /* Request signature capability */
34 #define NTLMSSP_NEGOTIATE_SEAL 0x0020 /* Request confidentiality */
35 #define NTLMSSP_NEGOTIATE_DGRAM 0x0040
36 #define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 /* Sign/seal use LM session key */
37 #define NTLMSSP_NEGOTIATE_NTLM 0x0200 /* NTLM authentication */
38 #define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000
39 #define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000
40 #define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 /* client/server on same machine */
41 #define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign for all security levels */
42 #define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
43 #define NTLMSSP_TARGET_TYPE_SERVER 0x20000
44 #define NTLMSSP_TARGET_TYPE_SHARE 0x40000
45 #define NTLMSSP_NEGOTIATE_NTLMV2 0x80000
46 #define NTLMSSP_REQUEST_INIT_RESP 0x100000
47 #define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000
48 #define NTLMSSP_REQUEST_NOT_NT_KEY 0x400000
49 #define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000
50 #define NTLMSSP_NEGOTIATE_128 0x20000000
51 #define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000
52 #define NTLMSSP_NEGOTIATE_56 0x80000000
54 /* Although typedefs are not commonly used for structure definitions */
55 /* in the Linux kernel, in this particular case they are useful */
56 /* to more closely match the standards document for NTLMSSP from */
57 /* OpenGroup and to make the code more closely match the standard in */
60 typedef struct _SECURITY_BUFFER {
63 __le32 Buffer; /* offset to buffer */
64 } __attribute__((packed)) SECURITY_BUFFER;
66 typedef struct _NEGOTIATE_MESSAGE {
67 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
68 __le32 MessageType; /* 1 */
69 __le32 NegotiateFlags;
70 SECURITY_BUFFER DomainName; /* RFC 1001 style and ASCII */
71 SECURITY_BUFFER WorkstationName; /* RFC 1001 and ASCII */
73 /* followed by WorkstationString */
74 } __attribute__((packed)) NEGOTIATE_MESSAGE, *PNEGOTIATE_MESSAGE;
76 typedef struct _CHALLENGE_MESSAGE {
77 __u8 Signature[sizeof(NTLMSSP_SIGNATURE)];
78 __le32 MessageType; /* 2 */
79 SECURITY_BUFFER TargetName;
80 __le32 NegotiateFlags;
81 __u8 Challenge[CIFS_CRYPTO_KEY_SIZE];
83 SECURITY_BUFFER TargetInfoArray;
84 } __attribute__((packed)) CHALLENGE_MESSAGE, *PCHALLENGE_MESSAGE;
86 typedef struct _AUTHENTICATE_MESSAGE {
87 __u8 Signature[sizeof (NTLMSSP_SIGNATURE)];
88 __le32 MessageType; /* 3 */
89 SECURITY_BUFFER LmChallengeResponse;
90 SECURITY_BUFFER NtChallengeResponse;
91 SECURITY_BUFFER DomainName;
92 SECURITY_BUFFER UserName;
93 SECURITY_BUFFER WorkstationName;
94 SECURITY_BUFFER SessionKey;
95 __le32 NegotiateFlags;
97 } __attribute__((packed)) AUTHENTICATE_MESSAGE, *PAUTHENTICATE_MESSAGE;