ia64/linux-2.6.18-xen.hg

view fs/cifs/smbencrypt.c @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
line source
1 /*
2 Unix SMB/Netbios implementation.
3 Version 1.9.
4 SMB parameters and setup
5 Copyright (C) Andrew Tridgell 1992-2000
6 Copyright (C) Luke Kenneth Casson Leighton 1996-2000
7 Modified by Jeremy Allison 1995.
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2002-2003
9 Modified by Steve French (sfrench@us.ibm.com) 2002-2003
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
26 #include <linux/module.h>
27 #include <linux/fs.h>
28 #include <linux/string.h>
29 #include <linux/kernel.h>
30 #include <linux/random.h>
31 #include "cifs_unicode.h"
32 #include "cifspdu.h"
33 #include "cifsglob.h"
34 #include "md5.h"
35 #include "cifs_debug.h"
36 #include "cifsencrypt.h"
38 #ifndef FALSE
39 #define FALSE 0
40 #endif
41 #ifndef TRUE
42 #define TRUE 1
43 #endif
45 /* following came from the other byteorder.h to avoid include conflicts */
46 #define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
47 #define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
48 #define SSVAL(buf,pos,val) SSVALX((buf),(pos),((__u16)(val)))
50 /*The following definitions come from libsmb/smbencrypt.c */
52 void SMBencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24);
53 void E_md4hash(const unsigned char *passwd, unsigned char *p16);
54 void nt_lm_owf_gen(char *pwd, unsigned char nt_p16[16], unsigned char p16[16]);
55 static void SMBOWFencrypt(unsigned char passwd[16], unsigned char *c8,
56 unsigned char p24[24]);
57 void NTLMSSPOWFencrypt(unsigned char passwd[8],
58 unsigned char *ntlmchalresp, unsigned char p24[24]);
59 void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24);
61 /*
62 This implements the X/Open SMB password encryption
63 It takes a password, a 8 byte "crypt key" and puts 24 bytes of
64 encrypted password into p24 */
65 /* Note that password must be uppercased and null terminated */
66 void
67 SMBencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
68 {
69 unsigned char p14[15], p21[21];
71 memset(p21, '\0', 21);
72 memset(p14, '\0', 14);
73 strncpy((char *) p14, (char *) passwd, 14);
75 /* strupper((char *)p14); *//* BB at least uppercase the easy range */
76 E_P16(p14, p21);
78 SMBOWFencrypt(p21, c8, p24);
80 memset(p14,0,15);
81 memset(p21,0,21);
82 }
84 /* Routines for Windows NT MD4 Hash functions. */
85 static int
86 _my_wcslen(__u16 * str)
87 {
88 int len = 0;
89 while (*str++ != 0)
90 len++;
91 return len;
92 }
94 /*
95 * Convert a string into an NT UNICODE string.
96 * Note that regardless of processor type
97 * this must be in intel (little-endian)
98 * format.
99 */
101 static int
102 _my_mbstowcs(__u16 * dst, const unsigned char *src, int len)
103 { /* not a very good conversion routine - change/fix */
104 int i;
105 __u16 val;
107 for (i = 0; i < len; i++) {
108 val = *src;
109 SSVAL(dst, 0, val);
110 dst++;
111 src++;
112 if (val == 0)
113 break;
114 }
115 return i;
116 }
118 /*
119 * Creates the MD4 Hash of the users password in NT UNICODE.
120 */
122 void
123 E_md4hash(const unsigned char *passwd, unsigned char *p16)
124 {
125 int len;
126 __u16 wpwd[129];
128 /* Password cannot be longer than 128 characters */
129 if(passwd) {
130 len = strlen((char *) passwd);
131 if (len > 128) {
132 len = 128;
133 }
134 /* Password must be converted to NT unicode */
135 _my_mbstowcs(wpwd, passwd, len);
136 } else
137 len = 0;
139 wpwd[len] = 0; /* Ensure string is null terminated */
140 /* Calculate length in bytes */
141 len = _my_wcslen(wpwd) * sizeof (__u16);
143 mdfour(p16, (unsigned char *) wpwd, len);
144 memset(wpwd,0,129 * 2);
145 }
147 /* Does both the NT and LM owfs of a user's password */
148 void
149 nt_lm_owf_gen(char *pwd, unsigned char nt_p16[16], unsigned char p16[16])
150 {
151 char passwd[514];
153 memset(passwd, '\0', 514);
154 if (strlen(pwd) < 513)
155 strcpy(passwd, pwd);
156 else
157 memcpy(passwd, pwd, 512);
158 /* Calculate the MD4 hash (NT compatible) of the password */
159 memset(nt_p16, '\0', 16);
160 E_md4hash(passwd, nt_p16);
162 /* Mangle the passwords into Lanman format */
163 passwd[14] = '\0';
164 /* strupper(passwd); */
166 /* Calculate the SMB (lanman) hash functions of the password */
168 memset(p16, '\0', 16);
169 E_P16((unsigned char *) passwd, (unsigned char *) p16);
171 /* clear out local copy of user's password (just being paranoid). */
172 memset(passwd, '\0', sizeof (passwd));
173 }
175 /* Does the NTLMv2 owfs of a user's password */
176 #if 0 /* function not needed yet - but will be soon */
177 static void
178 ntv2_owf_gen(const unsigned char owf[16], const char *user_n,
179 const char *domain_n, unsigned char kr_buf[16],
180 const struct nls_table *nls_codepage)
181 {
182 wchar_t * user_u;
183 wchar_t * dom_u;
184 int user_l, domain_l;
185 struct HMACMD5Context ctx;
187 /* might as well do one alloc to hold both (user_u and dom_u) */
188 user_u = kmalloc(2048 * sizeof(wchar_t),GFP_KERNEL);
189 if(user_u == NULL)
190 return;
191 dom_u = user_u + 1024;
193 /* push_ucs2(NULL, user_u, user_n, (user_l+1)*2, STR_UNICODE|STR_NOALIGN|STR_TERMINATE|STR_UPPER);
194 push_ucs2(NULL, dom_u, domain_n, (domain_l+1)*2, STR_UNICODE|STR_NOALIGN|STR_TERMINATE|STR_UPPER); */
196 /* BB user and domain may need to be uppercased */
197 user_l = cifs_strtoUCS(user_u, user_n, 511, nls_codepage);
198 domain_l = cifs_strtoUCS(dom_u, domain_n, 511, nls_codepage);
200 user_l++; /* trailing null */
201 domain_l++;
203 hmac_md5_init_limK_to_64(owf, 16, &ctx);
204 hmac_md5_update((const unsigned char *) user_u, user_l * 2, &ctx);
205 hmac_md5_update((const unsigned char *) dom_u, domain_l * 2, &ctx);
206 hmac_md5_final(kr_buf, &ctx);
208 kfree(user_u);
209 }
210 #endif
212 /* Does the des encryption from the NT or LM MD4 hash. */
213 static void
214 SMBOWFencrypt(unsigned char passwd[16], unsigned char *c8,
215 unsigned char p24[24])
216 {
217 unsigned char p21[21];
219 memset(p21, '\0', 21);
221 memcpy(p21, passwd, 16);
222 E_P24(p21, c8, p24);
223 }
225 /* Does the des encryption from the FIRST 8 BYTES of the NT or LM MD4 hash. */
226 void
227 NTLMSSPOWFencrypt(unsigned char passwd[8],
228 unsigned char *ntlmchalresp, unsigned char p24[24])
229 {
230 unsigned char p21[21];
232 memset(p21, '\0', 21);
233 memcpy(p21, passwd, 8);
234 memset(p21 + 8, 0xbd, 8);
236 E_P24(p21, ntlmchalresp, p24);
237 }
239 /* Does the NT MD4 hash then des encryption. */
241 void
242 SMBNTencrypt(unsigned char *passwd, unsigned char *c8, unsigned char *p24)
243 {
244 unsigned char p21[21];
246 memset(p21, '\0', 21);
248 E_md4hash(passwd, p21);
249 SMBOWFencrypt(p21, c8, p24);
250 }
253 /* Does the md5 encryption from the NT hash for NTLMv2. */
254 /* These routines will be needed later */
255 #if 0
256 static void
257 SMBOWFencrypt_ntv2(const unsigned char kr[16],
258 const struct data_blob * srv_chal,
259 const struct data_blob * cli_chal, unsigned char resp_buf[16])
260 {
261 struct HMACMD5Context ctx;
263 hmac_md5_init_limK_to_64(kr, 16, &ctx);
264 hmac_md5_update(srv_chal->data, srv_chal->length, &ctx);
265 hmac_md5_update(cli_chal->data, cli_chal->length, &ctx);
266 hmac_md5_final(resp_buf, &ctx);
267 }
269 static void
270 SMBsesskeygen_ntv2(const unsigned char kr[16],
271 const unsigned char *nt_resp, __u8 sess_key[16])
272 {
273 struct HMACMD5Context ctx;
275 hmac_md5_init_limK_to_64(kr, 16, &ctx);
276 hmac_md5_update(nt_resp, 16, &ctx);
277 hmac_md5_final((unsigned char *) sess_key, &ctx);
278 }
280 static void
281 SMBsesskeygen_ntv1(const unsigned char kr[16],
282 const unsigned char *nt_resp, __u8 sess_key[16])
283 {
284 mdfour((unsigned char *) sess_key, (unsigned char *) kr, 16);
285 }
286 #endif