source: trunk/src/secur32/util.c@ 21916

Last change on this file since 21916 was 21916, checked in by dmik, 14 years ago

Merge branch gcc-kmk to trunk.
File size: 9.3 KB
Line 
1/*
2 * Copyright 2006 Kai Blin
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 *
18 * This file contains various helper functions needed for NTLM and maybe others
19 */
20
21#include <stdarg.h>
22#include <stdio.h>
23#include <memory.h>
24
25#include "windef.h"
26#include "winbase.h"
27#include "rpc.h"
28#include "sspi.h"
29#include "secur32_priv.h"
30#include "wine/debug.h"
31
32WINE_DEFAULT_DEBUG_CHANNEL(ntlm);
33
34/* The CRC32 code is copyright (C) 1986 Gary S. Brown and was placed in the
35 * public domain.
36 * CRC polynomial 0xedb88320
37 */
38static const ULONG CRC_table[256] =
39{
40 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
41 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
42 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
43 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
44 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
45 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
46 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
47 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
48 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
49 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
50 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
51 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
52 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
53 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
54 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
55 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
56 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
57 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
58 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
59 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
60 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
61 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
62 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
63 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
64 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
65 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
66 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
67 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
68 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
69 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
70 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
71 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
72 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
73 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
74 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
75 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
76 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
77 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
78 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
79 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
80 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
81 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
82 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
83};
84
85static const char client_to_server_sign_constant[] = "session key to client-to-server signing key magic constant";
86static const char client_to_server_seal_constant[] = "session key to client-to-server sealing key magic constant";
87static const char server_to_client_sign_constant[] = "session key to server-to-client signing key magic constant";
88static const char server_to_client_seal_constant[] = "session key to server-to-client sealing key magic constant";
89
90typedef struct
91{
92 unsigned int buf[4];
93 unsigned int i[2];
94 unsigned char in[64];
95 unsigned char digest[16];
96} MD4_CTX;
97
98/* And now the same with a different memory layout. */
99typedef struct
100{
101 unsigned int i[2];
102 unsigned int buf[4];
103 unsigned char in[64];
104 unsigned char digest[16];
105} MD5_CTX;
106
107VOID WINAPI MD4Init( MD4_CTX *ctx );
108VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
109VOID WINAPI MD4Final( MD4_CTX *ctx );
110VOID WINAPI MD5Init( MD5_CTX *ctx );
111VOID WINAPI MD5Update( MD5_CTX *ctx, const unsigned char *buf, unsigned int len );
112VOID WINAPI MD5Final( MD5_CTX *ctx );
113
114ULONG ComputeCrc32(const BYTE *pData, INT iLen, ULONG initial_crc)
115{
116 ULONG crc = ~initial_crc;
117
118 while (iLen > 0)
119 {
120 crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
121 pData++;
122 iLen--;
123 }
124 return ~crc;
125}
126
127SECURITY_STATUS SECUR32_CreateNTLMv1SessionKey(PBYTE password, int len, PBYTE session_key)
128{
129 MD4_CTX ctx;
130 BYTE ntlm_hash[16];
131
132 TRACE("(%p, %p)\n", password, session_key);
133
134 MD4Init(&ctx);
135 MD4Update(&ctx, (const unsigned char*) password, len);
136 MD4Final(&ctx);
137
138 memcpy(ntlm_hash, ctx.digest, 0x10);
139
140 MD4Init(&ctx);
141 MD4Update(&ctx, ntlm_hash, 0x10u);
142 MD4Final(&ctx);
143
144 memcpy(session_key, ctx.digest, 0x10);
145
146 return SEC_E_OK;
147}
148
149static void SECUR32_CalcNTLMv2Subkey(const BYTE *session_key, const char *magic, PBYTE subkey)
150{
151 MD5_CTX ctx;
152
153 MD5Init(&ctx);
154 MD5Update(&ctx, session_key, 16);
155 MD5Update(&ctx, (const unsigned char*)magic, lstrlenA(magic)+1);
156 MD5Final(&ctx);
157 memcpy(subkey, ctx.digest, 16);
158}
159
160/* This assumes we do have a valid NTLM2 user session key */
161SECURITY_STATUS SECUR32_CreateNTLMv2SubKeys(PNegoHelper helper)
162{
163 helper->crypt.ntlm2.send_sign_key = HeapAlloc(GetProcessHeap(), 0, 16);
164 helper->crypt.ntlm2.send_seal_key = HeapAlloc(GetProcessHeap(), 0, 16);
165 helper->crypt.ntlm2.recv_sign_key = HeapAlloc(GetProcessHeap(), 0, 16);
166 helper->crypt.ntlm2.recv_seal_key = HeapAlloc(GetProcessHeap(), 0, 16);
167
168 if(helper->mode == NTLM_CLIENT)
169 {
170 SECUR32_CalcNTLMv2Subkey(helper->session_key, client_to_server_sign_constant,
171 helper->crypt.ntlm2.send_sign_key);
172 SECUR32_CalcNTLMv2Subkey(helper->session_key, client_to_server_seal_constant,
173 helper->crypt.ntlm2.send_seal_key);
174 SECUR32_CalcNTLMv2Subkey(helper->session_key, server_to_client_sign_constant,
175 helper->crypt.ntlm2.recv_sign_key);
176 SECUR32_CalcNTLMv2Subkey(helper->session_key, server_to_client_seal_constant,
177 helper->crypt.ntlm2.recv_seal_key);
178 }
179 else
180 {
181 SECUR32_CalcNTLMv2Subkey(helper->session_key, server_to_client_sign_constant,
182 helper->crypt.ntlm2.send_sign_key);
183 SECUR32_CalcNTLMv2Subkey(helper->session_key, server_to_client_seal_constant,
184 helper->crypt.ntlm2.send_seal_key);
185 SECUR32_CalcNTLMv2Subkey(helper->session_key, client_to_server_sign_constant,
186 helper->crypt.ntlm2.recv_sign_key);
187 SECUR32_CalcNTLMv2Subkey(helper->session_key, client_to_server_seal_constant,
188 helper->crypt.ntlm2.recv_seal_key);
189 }
190
191 return SEC_E_OK;
192}
193
194arc4_info *SECUR32_arc4Alloc(void)
195{
196 arc4_info *a4i = HeapAlloc(GetProcessHeap(), 0, sizeof(arc4_info));
197 return a4i;
198}
199
200/*
201 * The arc4 code is based on dlls/advapi32/crypt_arc4.c by Mike McCormack,
202 * which in turn is based on public domain code by Wei Dai
203 */
204void SECUR32_arc4Init(arc4_info *a4i, const BYTE *key, unsigned int keyLen)
205{
206 unsigned int keyIndex = 0, stateIndex = 0;
207 unsigned int i, a;
208
209 TRACE("(%p, %p, %d)\n", a4i, key, keyLen);
210
211 a4i->x = a4i->y = 0;
212
213 for (i=0; i<256; i++)
214 a4i->state[i] = i;
215
216 for (i=0; i<256; i++)
217 {
218 a = a4i->state[i];
219 stateIndex += key[keyIndex] + a;
220 stateIndex &= 0xff;
221 a4i->state[i] = a4i->state[stateIndex];
222 a4i->state[stateIndex] = a;
223 if (++keyIndex >= keyLen)
224 keyIndex = 0;
225 }
226
227}
228
229void SECUR32_arc4Process(arc4_info *a4i, BYTE *inoutString, unsigned int length)
230{
231 BYTE *const s=a4i->state;
232 unsigned int x = a4i->x;
233 unsigned int y = a4i->y;
234 unsigned int a, b;
235
236 while(length--)
237 {
238 x = (x+1) & 0xff;
239 a = s[x];
240 y = (y+a) & 0xff;
241 b = s[y];
242 s[x] = b;
243 s[y] = a;
244 *inoutString++ ^= s[(a+b) & 0xff];
245 }
246
247 a4i->x = x;
248 a4i->y = y;
249}
250
251void SECUR32_arc4Cleanup(arc4_info *a4i)
252{
253 HeapFree(GetProcessHeap(), 0, a4i);
254}
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