1*38c8a9a5SSteve French /* SPDX-License-Identifier: LGPL-2.1+ */ 2*38c8a9a5SSteve French /* 3*38c8a9a5SSteve French * Copyright (c) International Business Machines Corp., 2002,2007 4*38c8a9a5SSteve French * Author(s): Steve French (sfrench@us.ibm.com) 5*38c8a9a5SSteve French */ 6*38c8a9a5SSteve French 7*38c8a9a5SSteve French #ifndef __KSMBD_NTLMSSP_H 8*38c8a9a5SSteve French #define __KSMBD_NTLMSSP_H 9*38c8a9a5SSteve French 10*38c8a9a5SSteve French #define NTLMSSP_SIGNATURE "NTLMSSP" 11*38c8a9a5SSteve French 12*38c8a9a5SSteve French /* Security blob target info data */ 13*38c8a9a5SSteve French #define TGT_Name "KSMBD" 14*38c8a9a5SSteve French 15*38c8a9a5SSteve French /* 16*38c8a9a5SSteve French * Size of the crypto key returned on the negotiate SMB in bytes 17*38c8a9a5SSteve French */ 18*38c8a9a5SSteve French #define CIFS_CRYPTO_KEY_SIZE (8) 19*38c8a9a5SSteve French #define CIFS_KEY_SIZE (40) 20*38c8a9a5SSteve French 21*38c8a9a5SSteve French /* 22*38c8a9a5SSteve French * Size of encrypted user password in bytes 23*38c8a9a5SSteve French */ 24*38c8a9a5SSteve French #define CIFS_ENCPWD_SIZE (16) 25*38c8a9a5SSteve French #define CIFS_CPHTXT_SIZE (16) 26*38c8a9a5SSteve French 27*38c8a9a5SSteve French /* Message Types */ 28*38c8a9a5SSteve French #define NtLmNegotiate cpu_to_le32(1) 29*38c8a9a5SSteve French #define NtLmChallenge cpu_to_le32(2) 30*38c8a9a5SSteve French #define NtLmAuthenticate cpu_to_le32(3) 31*38c8a9a5SSteve French #define UnknownMessage cpu_to_le32(8) 32*38c8a9a5SSteve French 33*38c8a9a5SSteve French /* Negotiate Flags */ 34*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_UNICODE 0x01 /* Text strings are unicode */ 35*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_OEM 0x02 /* Text strings are in OEM */ 36*38c8a9a5SSteve French #define NTLMSSP_REQUEST_TARGET 0x04 /* Srv returns its auth realm */ 37*38c8a9a5SSteve French /* define reserved9 0x08 */ 38*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_SIGN 0x0010 /* Request signing capability */ 39*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_SEAL 0x0020 /* Request confidentiality */ 40*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_DGRAM 0x0040 41*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_LM_KEY 0x0080 /* Use LM session key */ 42*38c8a9a5SSteve French /* defined reserved 8 0x0100 */ 43*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_NTLM 0x0200 /* NTLM authentication */ 44*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_NT_ONLY 0x0400 /* Lanman not allowed */ 45*38c8a9a5SSteve French #define NTLMSSP_ANONYMOUS 0x0800 46*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x1000 /* reserved6 */ 47*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x2000 48*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_LOCAL_CALL 0x4000 /* client/server same machine */ 49*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x8000 /* Sign. All security levels */ 50*38c8a9a5SSteve French #define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000 51*38c8a9a5SSteve French #define NTLMSSP_TARGET_TYPE_SERVER 0x20000 52*38c8a9a5SSteve French #define NTLMSSP_TARGET_TYPE_SHARE 0x40000 53*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_EXTENDED_SEC 0x80000 /* NB:not related to NTLMv2 pwd*/ 54*38c8a9a5SSteve French /* #define NTLMSSP_REQUEST_INIT_RESP 0x100000 */ 55*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_IDENTIFY 0x100000 56*38c8a9a5SSteve French #define NTLMSSP_REQUEST_ACCEPT_RESP 0x200000 /* reserved5 */ 57*38c8a9a5SSteve French #define NTLMSSP_REQUEST_NON_NT_KEY 0x400000 58*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_TARGET_INFO 0x800000 59*38c8a9a5SSteve French /* #define reserved4 0x1000000 */ 60*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_VERSION 0x2000000 /* we do not set */ 61*38c8a9a5SSteve French /* #define reserved3 0x4000000 */ 62*38c8a9a5SSteve French /* #define reserved2 0x8000000 */ 63*38c8a9a5SSteve French /* #define reserved1 0x10000000 */ 64*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_128 0x20000000 65*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_KEY_XCH 0x40000000 66*38c8a9a5SSteve French #define NTLMSSP_NEGOTIATE_56 0x80000000 67*38c8a9a5SSteve French 68*38c8a9a5SSteve French /* Define AV Pair Field IDs */ 69*38c8a9a5SSteve French enum av_field_type { 70*38c8a9a5SSteve French NTLMSSP_AV_EOL = 0, 71*38c8a9a5SSteve French NTLMSSP_AV_NB_COMPUTER_NAME, 72*38c8a9a5SSteve French NTLMSSP_AV_NB_DOMAIN_NAME, 73*38c8a9a5SSteve French NTLMSSP_AV_DNS_COMPUTER_NAME, 74*38c8a9a5SSteve French NTLMSSP_AV_DNS_DOMAIN_NAME, 75*38c8a9a5SSteve French NTLMSSP_AV_DNS_TREE_NAME, 76*38c8a9a5SSteve French NTLMSSP_AV_FLAGS, 77*38c8a9a5SSteve French NTLMSSP_AV_TIMESTAMP, 78*38c8a9a5SSteve French NTLMSSP_AV_RESTRICTION, 79*38c8a9a5SSteve French NTLMSSP_AV_TARGET_NAME, 80*38c8a9a5SSteve French NTLMSSP_AV_CHANNEL_BINDINGS 81*38c8a9a5SSteve French }; 82*38c8a9a5SSteve French 83*38c8a9a5SSteve French /* Although typedefs are not commonly used for structure definitions */ 84*38c8a9a5SSteve French /* in the Linux kernel, in this particular case they are useful */ 85*38c8a9a5SSteve French /* to more closely match the standards document for NTLMSSP from */ 86*38c8a9a5SSteve French /* OpenGroup and to make the code more closely match the standard in */ 87*38c8a9a5SSteve French /* appearance */ 88*38c8a9a5SSteve French 89*38c8a9a5SSteve French struct security_buffer { 90*38c8a9a5SSteve French __le16 Length; 91*38c8a9a5SSteve French __le16 MaximumLength; 92*38c8a9a5SSteve French __le32 BufferOffset; /* offset to buffer */ 93*38c8a9a5SSteve French } __packed; 94*38c8a9a5SSteve French 95*38c8a9a5SSteve French struct target_info { 96*38c8a9a5SSteve French __le16 Type; 97*38c8a9a5SSteve French __le16 Length; 98*38c8a9a5SSteve French __u8 Content[]; 99*38c8a9a5SSteve French } __packed; 100*38c8a9a5SSteve French 101*38c8a9a5SSteve French struct negotiate_message { 102*38c8a9a5SSteve French __u8 Signature[sizeof(NTLMSSP_SIGNATURE)]; 103*38c8a9a5SSteve French __le32 MessageType; /* NtLmNegotiate = 1 */ 104*38c8a9a5SSteve French __le32 NegotiateFlags; 105*38c8a9a5SSteve French struct security_buffer DomainName; /* RFC 1001 style and ASCII */ 106*38c8a9a5SSteve French struct security_buffer WorkstationName; /* RFC 1001 and ASCII */ 107*38c8a9a5SSteve French /* 108*38c8a9a5SSteve French * struct security_buffer for version info not present since we 109*38c8a9a5SSteve French * do not set the version is present flag 110*38c8a9a5SSteve French */ 111*38c8a9a5SSteve French char DomainString[]; 112*38c8a9a5SSteve French /* followed by WorkstationString */ 113*38c8a9a5SSteve French } __packed; 114*38c8a9a5SSteve French 115*38c8a9a5SSteve French struct challenge_message { 116*38c8a9a5SSteve French __u8 Signature[sizeof(NTLMSSP_SIGNATURE)]; 117*38c8a9a5SSteve French __le32 MessageType; /* NtLmChallenge = 2 */ 118*38c8a9a5SSteve French struct security_buffer TargetName; 119*38c8a9a5SSteve French __le32 NegotiateFlags; 120*38c8a9a5SSteve French __u8 Challenge[CIFS_CRYPTO_KEY_SIZE]; 121*38c8a9a5SSteve French __u8 Reserved[8]; 122*38c8a9a5SSteve French struct security_buffer TargetInfoArray; 123*38c8a9a5SSteve French /* 124*38c8a9a5SSteve French * struct security_buffer for version info not present since we 125*38c8a9a5SSteve French * do not set the version is present flag 126*38c8a9a5SSteve French */ 127*38c8a9a5SSteve French } __packed; 128*38c8a9a5SSteve French 129*38c8a9a5SSteve French struct authenticate_message { 130*38c8a9a5SSteve French __u8 Signature[sizeof(NTLMSSP_SIGNATURE)]; 131*38c8a9a5SSteve French __le32 MessageType; /* NtLmsAuthenticate = 3 */ 132*38c8a9a5SSteve French struct security_buffer LmChallengeResponse; 133*38c8a9a5SSteve French struct security_buffer NtChallengeResponse; 134*38c8a9a5SSteve French struct security_buffer DomainName; 135*38c8a9a5SSteve French struct security_buffer UserName; 136*38c8a9a5SSteve French struct security_buffer WorkstationName; 137*38c8a9a5SSteve French struct security_buffer SessionKey; 138*38c8a9a5SSteve French __le32 NegotiateFlags; 139*38c8a9a5SSteve French /* 140*38c8a9a5SSteve French * struct security_buffer for version info not present since we 141*38c8a9a5SSteve French * do not set the version is present flag 142*38c8a9a5SSteve French */ 143*38c8a9a5SSteve French char UserString[]; 144*38c8a9a5SSteve French } __packed; 145*38c8a9a5SSteve French 146*38c8a9a5SSteve French struct ntlmv2_resp { 147*38c8a9a5SSteve French char ntlmv2_hash[CIFS_ENCPWD_SIZE]; 148*38c8a9a5SSteve French __le32 blob_signature; 149*38c8a9a5SSteve French __u32 reserved; 150*38c8a9a5SSteve French __le64 time; 151*38c8a9a5SSteve French __u64 client_chal; /* random */ 152*38c8a9a5SSteve French __u32 reserved2; 153*38c8a9a5SSteve French /* array of name entries could follow ending in minimum 4 byte struct */ 154*38c8a9a5SSteve French } __packed; 155*38c8a9a5SSteve French 156*38c8a9a5SSteve French /* per smb session structure/fields */ 157*38c8a9a5SSteve French struct ntlmssp_auth { 158*38c8a9a5SSteve French /* whether session key is per smb session */ 159*38c8a9a5SSteve French bool sesskey_per_smbsess; 160*38c8a9a5SSteve French /* sent by client in type 1 ntlmsssp exchange */ 161*38c8a9a5SSteve French __u32 client_flags; 162*38c8a9a5SSteve French /* sent by server in type 2 ntlmssp exchange */ 163*38c8a9a5SSteve French __u32 conn_flags; 164*38c8a9a5SSteve French /* sent to server */ 165*38c8a9a5SSteve French unsigned char ciphertext[CIFS_CPHTXT_SIZE]; 166*38c8a9a5SSteve French /* used by ntlmssp */ 167*38c8a9a5SSteve French char cryptkey[CIFS_CRYPTO_KEY_SIZE]; 168*38c8a9a5SSteve French }; 169*38c8a9a5SSteve French #endif /* __KSMBD_NTLMSSP_H */ 170