1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/*
Unix SMB/Netbios implementation.
Version 1.9.
SMB parameters and setup
Copyright (C) Andrew Tridgell 1992-1997
Modified by Jeremy Allison 1995.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
extern int DEBUGLEVEL;
#include "byteorder.h"
/*
This implements the X/Open SMB password encryption
It takes a password, a 8 byte "crypt key" and puts 24 bytes of
encrypted password into p24 */
void SMBencrypt(uchar *passwd, uchar *c8, uchar *p24)
{
uchar p14[15], p21[21];
memset(p21,'\0',21);
memset(p14,'\0',14);
StrnCpy((char *)p14,(char *)passwd,14);
strupper((char *)p14);
E_P16(p14, p21);
E_P24(p21, c8, p24);
}
/* Routines for Windows NT MD4 Hash functions. */
static int _my_wcslen(int16 *str)
{
int len = 0;
while(*str++ != 0)
len++;
return len;
}
/*
* Convert a string into an NT UNICODE string.
* Note that regardless of processor type
* this must be in intel (little-endian)
* format.
*/
static int _my_mbstowcs(int16 *dst, uchar *src, int len)
{
int i;
int16 val;
for(i = 0; i < len; i++) {
val = *src;
SSVAL(dst,0,val);
dst++;
src++;
if(val == 0)
break;
}
return i;
}
/*
* Creates the MD4 Hash of the users password in NT UNICODE.
*/
void E_md4hash(uchar *passwd, uchar *p16)
{
int len;
int16 wpwd[129];
/* Password cannot be longer than 128 characters */
len = strlen((char *)passwd);
if(len > 128)
len = 128;
/* Password must be converted to NT unicode */
_my_mbstowcs(wpwd, passwd, len);
wpwd[len] = 0; /* Ensure string is null terminated */
/* Calculate length in bytes */
len = _my_wcslen(wpwd) * sizeof(int16);
mdfour(p16, (unsigned char *)wpwd, len);
}
/* Does the NT MD4 hash then des encryption. */
void SMBNTencrypt(uchar *passwd, uchar *c8, uchar *p24)
{
uchar p21[21];
memset(p21,'\0',21);
E_md4hash(passwd, p21);
E_P24(p21, c8, p24);
}
/* Does both the NT and LM owfs of a user's password */
void nt_lm_owf_gen(char *pwd, char nt_p16[16], char p16[16])
{
char passwd[129];
strncpy(passwd, pwd, 129);
/* Calculate the MD4 hash (NT compatible) of the password */
memset(nt_p16, '\0', 16);
E_md4hash((uchar *)passwd, nt_p16);
/* Mangle the passwords into Lanman format */
passwd[14] = '\0';
strupper(passwd);
/* Calculate the SMB (lanman) hash functions of the password */
memset(p16, '\0', 16);
E_P16((uchar *) passwd, p16);
/* clear out local copy of user's password (just being paranoid). */
bzero(passwd, sizeof(passwd));
}
|
