Nino Der Kinderen / Mbed 2 deprecated InetTest

Embedded C project:18/12/2014

Dependencies:   DS1307 TextLCD mbed

NetServices/lwip/netif/ppp/chpms.c@0:8d87bc453349, 2014-12-18 (annotated)

Committer:
ninoderkinderen
Date:
Thu Dec 18 09:35:49 2014 +0000
Revision:
0:8d87bc453349
Programma embedded C

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 0:8d87bc453349 1 /*** WARNING - THIS CODE HAS NOT BEEN FINISHED! ***/
ninoderkinderen 0:8d87bc453349 2 /*** The original PPPD code is written in a way to require either the UNIX DES
ninoderkinderen 0:8d87bc453349 3 encryption functions encrypt(3) and setkey(3) or the DES library libdes.
ninoderkinderen 0:8d87bc453349 4 Since both is not included in lwIP, MSCHAP currently does not work! */
ninoderkinderen 0:8d87bc453349 5 /*****************************************************************************
ninoderkinderen 0:8d87bc453349 6 * chpms.c - Network MicroSoft Challenge Handshake Authentication Protocol program file.
ninoderkinderen 0:8d87bc453349 7 *
ninoderkinderen 0:8d87bc453349 8 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
ninoderkinderen 0:8d87bc453349 9 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
ninoderkinderen 0:8d87bc453349 10 *
ninoderkinderen 0:8d87bc453349 11 * The authors hereby grant permission to use, copy, modify, distribute,
ninoderkinderen 0:8d87bc453349 12 * and license this software and its documentation for any purpose, provided
ninoderkinderen 0:8d87bc453349 13 * that existing copyright notices are retained in all copies and that this
ninoderkinderen 0:8d87bc453349 14 * notice and the following disclaimer are included verbatim in any
ninoderkinderen 0:8d87bc453349 15 * distributions. No written agreement, license, or royalty fee is required
ninoderkinderen 0:8d87bc453349 16 * for any of the authorized uses.
ninoderkinderen 0:8d87bc453349 17 *
ninoderkinderen 0:8d87bc453349 18 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
ninoderkinderen 0:8d87bc453349 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ninoderkinderen 0:8d87bc453349 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ninoderkinderen 0:8d87bc453349 21 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
ninoderkinderen 0:8d87bc453349 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
ninoderkinderen 0:8d87bc453349 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
ninoderkinderen 0:8d87bc453349 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
ninoderkinderen 0:8d87bc453349 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
ninoderkinderen 0:8d87bc453349 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
ninoderkinderen 0:8d87bc453349 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ninoderkinderen 0:8d87bc453349 28 *
ninoderkinderen 0:8d87bc453349 29 ******************************************************************************
ninoderkinderen 0:8d87bc453349 30 * REVISION HISTORY
ninoderkinderen 0:8d87bc453349 31 *
ninoderkinderen 0:8d87bc453349 32 * 03-01-01 Marc Boucher <marc@mbsi.ca>
ninoderkinderen 0:8d87bc453349 33 * Ported to lwIP.
ninoderkinderen 0:8d87bc453349 34 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
ninoderkinderen 0:8d87bc453349 35 * Original based on BSD chap_ms.c.
ninoderkinderen 0:8d87bc453349 36 *****************************************************************************/
ninoderkinderen 0:8d87bc453349 37 /*
ninoderkinderen 0:8d87bc453349 38 * chap_ms.c - Microsoft MS-CHAP compatible implementation.
ninoderkinderen 0:8d87bc453349 39 *
ninoderkinderen 0:8d87bc453349 40 * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
ninoderkinderen 0:8d87bc453349 41 * http://www.strataware.com/
ninoderkinderen 0:8d87bc453349 42 *
ninoderkinderen 0:8d87bc453349 43 * All rights reserved.
ninoderkinderen 0:8d87bc453349 44 *
ninoderkinderen 0:8d87bc453349 45 * Redistribution and use in source and binary forms are permitted
ninoderkinderen 0:8d87bc453349 46 * provided that the above copyright notice and this paragraph are
ninoderkinderen 0:8d87bc453349 47 * duplicated in all such forms and that any documentation,
ninoderkinderen 0:8d87bc453349 48 * advertising materials, and other materials related to such
ninoderkinderen 0:8d87bc453349 49 * distribution and use acknowledge that the software was developed
ninoderkinderen 0:8d87bc453349 50 * by Eric Rosenquist. The name of the author may not be used to
ninoderkinderen 0:8d87bc453349 51 * endorse or promote products derived from this software without
ninoderkinderen 0:8d87bc453349 52 * specific prior written permission.
ninoderkinderen 0:8d87bc453349 53 *
ninoderkinderen 0:8d87bc453349 54 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ninoderkinderen 0:8d87bc453349 55 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ninoderkinderen 0:8d87bc453349 56 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ninoderkinderen 0:8d87bc453349 57 */
ninoderkinderen 0:8d87bc453349 58
ninoderkinderen 0:8d87bc453349 59 /*
ninoderkinderen 0:8d87bc453349 60 * Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997
ninoderkinderen 0:8d87bc453349 61 *
ninoderkinderen 0:8d87bc453349 62 * Implemented LANManager type password response to MS-CHAP challenges.
ninoderkinderen 0:8d87bc453349 63 * Now pppd provides both NT style and LANMan style blocks, and the
ninoderkinderen 0:8d87bc453349 64 * prefered is set by option "ms-lanman". Default is to use NT.
ninoderkinderen 0:8d87bc453349 65 * The hash text (StdText) was taken from Win95 RASAPI32.DLL.
ninoderkinderen 0:8d87bc453349 66 *
ninoderkinderen 0:8d87bc453349 67 * You should also use DOMAIN\\USERNAME as described in README.MSCHAP80
ninoderkinderen 0:8d87bc453349 68 */
ninoderkinderen 0:8d87bc453349 69
ninoderkinderen 0:8d87bc453349 70 #define USE_CRYPT
ninoderkinderen 0:8d87bc453349 71
ninoderkinderen 0:8d87bc453349 72 #include "lwip/opt.h"
ninoderkinderen 0:8d87bc453349 73
ninoderkinderen 0:8d87bc453349 74 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ninoderkinderen 0:8d87bc453349 75
ninoderkinderen 0:8d87bc453349 76 #if MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ninoderkinderen 0:8d87bc453349 77
ninoderkinderen 0:8d87bc453349 78 #include "ppp.h"
ninoderkinderen 0:8d87bc453349 79 #include "pppdebug.h"
ninoderkinderen 0:8d87bc453349 80
ninoderkinderen 0:8d87bc453349 81 #include "md4.h"
ninoderkinderen 0:8d87bc453349 82 #ifndef USE_CRYPT
ninoderkinderen 0:8d87bc453349 83 #include "des.h"
ninoderkinderen 0:8d87bc453349 84 #endif
ninoderkinderen 0:8d87bc453349 85 #include "chap.h"
ninoderkinderen 0:8d87bc453349 86 #include "chpms.h"
ninoderkinderen 0:8d87bc453349 87
ninoderkinderen 0:8d87bc453349 88 #include <string.h>
ninoderkinderen 0:8d87bc453349 89
ninoderkinderen 0:8d87bc453349 90
ninoderkinderen 0:8d87bc453349 91 /*************************/
ninoderkinderen 0:8d87bc453349 92 /*** LOCAL DEFINITIONS ***/
ninoderkinderen 0:8d87bc453349 93 /*************************/
ninoderkinderen 0:8d87bc453349 94
ninoderkinderen 0:8d87bc453349 95
ninoderkinderen 0:8d87bc453349 96 /************************/
ninoderkinderen 0:8d87bc453349 97 /*** LOCAL DATA TYPES ***/
ninoderkinderen 0:8d87bc453349 98 /************************/
ninoderkinderen 0:8d87bc453349 99 typedef struct {
ninoderkinderen 0:8d87bc453349 100 u_char LANManResp[24];
ninoderkinderen 0:8d87bc453349 101 u_char NTResp[24];
ninoderkinderen 0:8d87bc453349 102 u_char UseNT; /* If 1, ignore the LANMan response field */
ninoderkinderen 0:8d87bc453349 103 } MS_ChapResponse;
ninoderkinderen 0:8d87bc453349 104 /* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse),
ninoderkinderen 0:8d87bc453349 105 in case this struct gets padded. */
ninoderkinderen 0:8d87bc453349 106
ninoderkinderen 0:8d87bc453349 107
ninoderkinderen 0:8d87bc453349 108
ninoderkinderen 0:8d87bc453349 109 /***********************************/
ninoderkinderen 0:8d87bc453349 110 /*** LOCAL FUNCTION DECLARATIONS ***/
ninoderkinderen 0:8d87bc453349 111 /***********************************/
ninoderkinderen 0:8d87bc453349 112
ninoderkinderen 0:8d87bc453349 113 /* XXX Don't know what to do with these. */
ninoderkinderen 0:8d87bc453349 114 extern void setkey(const char *);
ninoderkinderen 0:8d87bc453349 115 extern void encrypt(char *, int);
ninoderkinderen 0:8d87bc453349 116
ninoderkinderen 0:8d87bc453349 117 static void DesEncrypt (u_char *, u_char *, u_char *);
ninoderkinderen 0:8d87bc453349 118 static void MakeKey (u_char *, u_char *);
ninoderkinderen 0:8d87bc453349 119
ninoderkinderen 0:8d87bc453349 120 #ifdef USE_CRYPT
ninoderkinderen 0:8d87bc453349 121 static void Expand (u_char *, u_char *);
ninoderkinderen 0:8d87bc453349 122 static void Collapse (u_char *, u_char *);
ninoderkinderen 0:8d87bc453349 123 #endif
ninoderkinderen 0:8d87bc453349 124
ninoderkinderen 0:8d87bc453349 125 static void ChallengeResponse(
ninoderkinderen 0:8d87bc453349 126 u_char *challenge, /* IN 8 octets */
ninoderkinderen 0:8d87bc453349 127 u_char *pwHash, /* IN 16 octets */
ninoderkinderen 0:8d87bc453349 128 u_char *response /* OUT 24 octets */
ninoderkinderen 0:8d87bc453349 129 );
ninoderkinderen 0:8d87bc453349 130 static void ChapMS_NT(
ninoderkinderen 0:8d87bc453349 131 char *rchallenge,
ninoderkinderen 0:8d87bc453349 132 int rchallenge_len,
ninoderkinderen 0:8d87bc453349 133 char *secret,
ninoderkinderen 0:8d87bc453349 134 int secret_len,
ninoderkinderen 0:8d87bc453349 135 MS_ChapResponse *response
ninoderkinderen 0:8d87bc453349 136 );
ninoderkinderen 0:8d87bc453349 137 static u_char Get7Bits(
ninoderkinderen 0:8d87bc453349 138 u_char *input,
ninoderkinderen 0:8d87bc453349 139 int startBit
ninoderkinderen 0:8d87bc453349 140 );
ninoderkinderen 0:8d87bc453349 141
ninoderkinderen 0:8d87bc453349 142 static void
ninoderkinderen 0:8d87bc453349 143 ChallengeResponse( u_char *challenge, /* IN 8 octets */
ninoderkinderen 0:8d87bc453349 144 u_char *pwHash, /* IN 16 octets */
ninoderkinderen 0:8d87bc453349 145 u_char *response /* OUT 24 octets */)
ninoderkinderen 0:8d87bc453349 146 {
ninoderkinderen 0:8d87bc453349 147 u_char ZPasswordHash[21];
ninoderkinderen 0:8d87bc453349 148
ninoderkinderen 0:8d87bc453349 149 BZERO(ZPasswordHash, sizeof(ZPasswordHash));
ninoderkinderen 0:8d87bc453349 150 BCOPY(pwHash, ZPasswordHash, 16);
ninoderkinderen 0:8d87bc453349 151
ninoderkinderen 0:8d87bc453349 152 #if 0
ninoderkinderen 0:8d87bc453349 153 log_packet(ZPasswordHash, sizeof(ZPasswordHash), "ChallengeResponse - ZPasswordHash", LOG_DEBUG);
ninoderkinderen 0:8d87bc453349 154 #endif
ninoderkinderen 0:8d87bc453349 155
ninoderkinderen 0:8d87bc453349 156 DesEncrypt(challenge, ZPasswordHash + 0, response + 0);
ninoderkinderen 0:8d87bc453349 157 DesEncrypt(challenge, ZPasswordHash + 7, response + 8);
ninoderkinderen 0:8d87bc453349 158 DesEncrypt(challenge, ZPasswordHash + 14, response + 16);
ninoderkinderen 0:8d87bc453349 159
ninoderkinderen 0:8d87bc453349 160 #if 0
ninoderkinderen 0:8d87bc453349 161 log_packet(response, 24, "ChallengeResponse - response", LOG_DEBUG);
ninoderkinderen 0:8d87bc453349 162 #endif
ninoderkinderen 0:8d87bc453349 163 }
ninoderkinderen 0:8d87bc453349 164
ninoderkinderen 0:8d87bc453349 165
ninoderkinderen 0:8d87bc453349 166 #ifdef USE_CRYPT
ninoderkinderen 0:8d87bc453349 167 static void
ninoderkinderen 0:8d87bc453349 168 DesEncrypt( u_char *clear, /* IN 8 octets */
ninoderkinderen 0:8d87bc453349 169 u_char *key, /* IN 7 octets */
ninoderkinderen 0:8d87bc453349 170 u_char *cipher /* OUT 8 octets */)
ninoderkinderen 0:8d87bc453349 171 {
ninoderkinderen 0:8d87bc453349 172 u_char des_key[8];
ninoderkinderen 0:8d87bc453349 173 u_char crypt_key[66];
ninoderkinderen 0:8d87bc453349 174 u_char des_input[66];
ninoderkinderen 0:8d87bc453349 175
ninoderkinderen 0:8d87bc453349 176 MakeKey(key, des_key);
ninoderkinderen 0:8d87bc453349 177
ninoderkinderen 0:8d87bc453349 178 Expand(des_key, crypt_key);
ninoderkinderen 0:8d87bc453349 179 setkey((char*)crypt_key);
ninoderkinderen 0:8d87bc453349 180
ninoderkinderen 0:8d87bc453349 181 #if 0
ninoderkinderen 0:8d87bc453349 182 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 183 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
ninoderkinderen 0:8d87bc453349 184 #endif
ninoderkinderen 0:8d87bc453349 185
ninoderkinderen 0:8d87bc453349 186 Expand(clear, des_input);
ninoderkinderen 0:8d87bc453349 187 encrypt((char*)des_input, 0);
ninoderkinderen 0:8d87bc453349 188 Collapse(des_input, cipher);
ninoderkinderen 0:8d87bc453349 189
ninoderkinderen 0:8d87bc453349 190 #if 0
ninoderkinderen 0:8d87bc453349 191 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 192 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
ninoderkinderen 0:8d87bc453349 193 #endif
ninoderkinderen 0:8d87bc453349 194 }
ninoderkinderen 0:8d87bc453349 195
ninoderkinderen 0:8d87bc453349 196 #else /* USE_CRYPT */
ninoderkinderen 0:8d87bc453349 197
ninoderkinderen 0:8d87bc453349 198 static void
ninoderkinderen 0:8d87bc453349 199 DesEncrypt( u_char *clear, /* IN 8 octets */
ninoderkinderen 0:8d87bc453349 200 u_char *key, /* IN 7 octets */
ninoderkinderen 0:8d87bc453349 201 u_char *cipher /* OUT 8 octets */)
ninoderkinderen 0:8d87bc453349 202 {
ninoderkinderen 0:8d87bc453349 203 des_cblock des_key;
ninoderkinderen 0:8d87bc453349 204 des_key_schedule key_schedule;
ninoderkinderen 0:8d87bc453349 205
ninoderkinderen 0:8d87bc453349 206 MakeKey(key, des_key);
ninoderkinderen 0:8d87bc453349 207
ninoderkinderen 0:8d87bc453349 208 des_set_key(&des_key, key_schedule);
ninoderkinderen 0:8d87bc453349 209
ninoderkinderen 0:8d87bc453349 210 #if 0
ninoderkinderen 0:8d87bc453349 211 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 212 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
ninoderkinderen 0:8d87bc453349 213 #endif
ninoderkinderen 0:8d87bc453349 214
ninoderkinderen 0:8d87bc453349 215 des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher, key_schedule, 1);
ninoderkinderen 0:8d87bc453349 216
ninoderkinderen 0:8d87bc453349 217 #if 0
ninoderkinderen 0:8d87bc453349 218 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 219 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
ninoderkinderen 0:8d87bc453349 220 #endif
ninoderkinderen 0:8d87bc453349 221 }
ninoderkinderen 0:8d87bc453349 222
ninoderkinderen 0:8d87bc453349 223 #endif /* USE_CRYPT */
ninoderkinderen 0:8d87bc453349 224
ninoderkinderen 0:8d87bc453349 225
ninoderkinderen 0:8d87bc453349 226 static u_char
ninoderkinderen 0:8d87bc453349 227 Get7Bits( u_char *input, int startBit)
ninoderkinderen 0:8d87bc453349 228 {
ninoderkinderen 0:8d87bc453349 229 register unsigned int word;
ninoderkinderen 0:8d87bc453349 230
ninoderkinderen 0:8d87bc453349 231 word = (unsigned)input[startBit / 8] << 8;
ninoderkinderen 0:8d87bc453349 232 word |= (unsigned)input[startBit / 8 + 1];
ninoderkinderen 0:8d87bc453349 233
ninoderkinderen 0:8d87bc453349 234 word >>= 15 - (startBit % 8 + 7);
ninoderkinderen 0:8d87bc453349 235
ninoderkinderen 0:8d87bc453349 236 return word & 0xFE;
ninoderkinderen 0:8d87bc453349 237 }
ninoderkinderen 0:8d87bc453349 238
ninoderkinderen 0:8d87bc453349 239 #ifdef USE_CRYPT
ninoderkinderen 0:8d87bc453349 240
ninoderkinderen 0:8d87bc453349 241 /* in == 8-byte string (expanded version of the 56-bit key)
ninoderkinderen 0:8d87bc453349 242 * out == 64-byte string where each byte is either 1 or 0
ninoderkinderen 0:8d87bc453349 243 * Note that the low-order "bit" is always ignored by by setkey()
ninoderkinderen 0:8d87bc453349 244 */
ninoderkinderen 0:8d87bc453349 245 static void
ninoderkinderen 0:8d87bc453349 246 Expand(u_char *in, u_char *out)
ninoderkinderen 0:8d87bc453349 247 {
ninoderkinderen 0:8d87bc453349 248 int j, c;
ninoderkinderen 0:8d87bc453349 249 int i;
ninoderkinderen 0:8d87bc453349 250
ninoderkinderen 0:8d87bc453349 251 for(i = 0; i < 64; in++){
ninoderkinderen 0:8d87bc453349 252 c = *in;
ninoderkinderen 0:8d87bc453349 253 for(j = 7; j >= 0; j--) {
ninoderkinderen 0:8d87bc453349 254 *out++ = (c >> j) & 01;
ninoderkinderen 0:8d87bc453349 255 }
ninoderkinderen 0:8d87bc453349 256 i += 8;
ninoderkinderen 0:8d87bc453349 257 }
ninoderkinderen 0:8d87bc453349 258 }
ninoderkinderen 0:8d87bc453349 259
ninoderkinderen 0:8d87bc453349 260 /* The inverse of Expand
ninoderkinderen 0:8d87bc453349 261 */
ninoderkinderen 0:8d87bc453349 262 static void
ninoderkinderen 0:8d87bc453349 263 Collapse(u_char *in, u_char *out)
ninoderkinderen 0:8d87bc453349 264 {
ninoderkinderen 0:8d87bc453349 265 int j;
ninoderkinderen 0:8d87bc453349 266 int i;
ninoderkinderen 0:8d87bc453349 267 unsigned int c;
ninoderkinderen 0:8d87bc453349 268
ninoderkinderen 0:8d87bc453349 269 for (i = 0; i < 64; i += 8, out++) {
ninoderkinderen 0:8d87bc453349 270 c = 0;
ninoderkinderen 0:8d87bc453349 271 for (j = 7; j >= 0; j--, in++) {
ninoderkinderen 0:8d87bc453349 272 c |= *in << j;
ninoderkinderen 0:8d87bc453349 273 }
ninoderkinderen 0:8d87bc453349 274 *out = c & 0xff;
ninoderkinderen 0:8d87bc453349 275 }
ninoderkinderen 0:8d87bc453349 276 }
ninoderkinderen 0:8d87bc453349 277 #endif
ninoderkinderen 0:8d87bc453349 278
ninoderkinderen 0:8d87bc453349 279 static void
ninoderkinderen 0:8d87bc453349 280 MakeKey( u_char *key, /* IN 56 bit DES key missing parity bits */
ninoderkinderen 0:8d87bc453349 281 u_char *des_key /* OUT 64 bit DES key with parity bits added */)
ninoderkinderen 0:8d87bc453349 282 {
ninoderkinderen 0:8d87bc453349 283 des_key[0] = Get7Bits(key, 0);
ninoderkinderen 0:8d87bc453349 284 des_key[1] = Get7Bits(key, 7);
ninoderkinderen 0:8d87bc453349 285 des_key[2] = Get7Bits(key, 14);
ninoderkinderen 0:8d87bc453349 286 des_key[3] = Get7Bits(key, 21);
ninoderkinderen 0:8d87bc453349 287 des_key[4] = Get7Bits(key, 28);
ninoderkinderen 0:8d87bc453349 288 des_key[5] = Get7Bits(key, 35);
ninoderkinderen 0:8d87bc453349 289 des_key[6] = Get7Bits(key, 42);
ninoderkinderen 0:8d87bc453349 290 des_key[7] = Get7Bits(key, 49);
ninoderkinderen 0:8d87bc453349 291
ninoderkinderen 0:8d87bc453349 292 #ifndef USE_CRYPT
ninoderkinderen 0:8d87bc453349 293 des_set_odd_parity((des_cblock *)des_key);
ninoderkinderen 0:8d87bc453349 294 #endif
ninoderkinderen 0:8d87bc453349 295
ninoderkinderen 0:8d87bc453349 296 #if 0
ninoderkinderen 0:8d87bc453349 297 CHAPDEBUG(LOG_INFO, ("MakeKey: 56-bit input : %02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 298 key[0], key[1], key[2], key[3], key[4], key[5], key[6]));
ninoderkinderen 0:8d87bc453349 299 CHAPDEBUG(LOG_INFO, ("MakeKey: 64-bit output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ninoderkinderen 0:8d87bc453349 300 des_key[0], des_key[1], des_key[2], des_key[3], des_key[4], des_key[5], des_key[6], des_key[7]));
ninoderkinderen 0:8d87bc453349 301 #endif
ninoderkinderen 0:8d87bc453349 302 }
ninoderkinderen 0:8d87bc453349 303
ninoderkinderen 0:8d87bc453349 304 static void
ninoderkinderen 0:8d87bc453349 305 ChapMS_NT( char *rchallenge,
ninoderkinderen 0:8d87bc453349 306 int rchallenge_len,
ninoderkinderen 0:8d87bc453349 307 char *secret,
ninoderkinderen 0:8d87bc453349 308 int secret_len,
ninoderkinderen 0:8d87bc453349 309 MS_ChapResponse *response)
ninoderkinderen 0:8d87bc453349 310 {
ninoderkinderen 0:8d87bc453349 311 int i;
ninoderkinderen 0:8d87bc453349 312 MDstruct md4Context;
ninoderkinderen 0:8d87bc453349 313 u_char unicodePassword[MAX_NT_PASSWORD * 2];
ninoderkinderen 0:8d87bc453349 314 static int low_byte_first = -1;
ninoderkinderen 0:8d87bc453349 315
ninoderkinderen 0:8d87bc453349 316 LWIP_UNUSED_ARG(rchallenge_len);
ninoderkinderen 0:8d87bc453349 317
ninoderkinderen 0:8d87bc453349 318 /* Initialize the Unicode version of the secret (== password). */
ninoderkinderen 0:8d87bc453349 319 /* This implicitly supports 8-bit ISO8859/1 characters. */
ninoderkinderen 0:8d87bc453349 320 BZERO(unicodePassword, sizeof(unicodePassword));
ninoderkinderen 0:8d87bc453349 321 for (i = 0; i < secret_len; i++) {
ninoderkinderen 0:8d87bc453349 322 unicodePassword[i * 2] = (u_char)secret[i];
ninoderkinderen 0:8d87bc453349 323 }
ninoderkinderen 0:8d87bc453349 324 MDbegin(&md4Context);
ninoderkinderen 0:8d87bc453349 325 MDupdate(&md4Context, unicodePassword, secret_len * 2 * 8); /* Unicode is 2 bytes/char, *8 for bit count */
ninoderkinderen 0:8d87bc453349 326
ninoderkinderen 0:8d87bc453349 327 if (low_byte_first == -1) {
ninoderkinderen 0:8d87bc453349 328 low_byte_first = (PP_HTONS((unsigned short int)1) != 1);
ninoderkinderen 0:8d87bc453349 329 }
ninoderkinderen 0:8d87bc453349 330 if (low_byte_first == 0) {
ninoderkinderen 0:8d87bc453349 331 /* @todo: arg type - u_long* or u_int* ? */
ninoderkinderen 0:8d87bc453349 332 MDreverse((unsigned int*)&md4Context); /* sfb 961105 */
ninoderkinderen 0:8d87bc453349 333 }
ninoderkinderen 0:8d87bc453349 334
ninoderkinderen 0:8d87bc453349 335 MDupdate(&md4Context, NULL, 0); /* Tell MD4 we're done */
ninoderkinderen 0:8d87bc453349 336
ninoderkinderen 0:8d87bc453349 337 ChallengeResponse((u_char*)rchallenge, (u_char*)md4Context.buffer, response->NTResp);
ninoderkinderen 0:8d87bc453349 338 }
ninoderkinderen 0:8d87bc453349 339
ninoderkinderen 0:8d87bc453349 340 #ifdef MSLANMAN
ninoderkinderen 0:8d87bc453349 341 static u_char *StdText = (u_char *)"KGS!@#$%"; /* key from rasapi32.dll */
ninoderkinderen 0:8d87bc453349 342
ninoderkinderen 0:8d87bc453349 343 static void
ninoderkinderen 0:8d87bc453349 344 ChapMS_LANMan( char *rchallenge,
ninoderkinderen 0:8d87bc453349 345 int rchallenge_len,
ninoderkinderen 0:8d87bc453349 346 char *secret,
ninoderkinderen 0:8d87bc453349 347 int secret_len,
ninoderkinderen 0:8d87bc453349 348 MS_ChapResponse *response)
ninoderkinderen 0:8d87bc453349 349 {
ninoderkinderen 0:8d87bc453349 350 int i;
ninoderkinderen 0:8d87bc453349 351 u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */
ninoderkinderen 0:8d87bc453349 352 u_char PasswordHash[16];
ninoderkinderen 0:8d87bc453349 353
ninoderkinderen 0:8d87bc453349 354 /* LANMan password is case insensitive */
ninoderkinderen 0:8d87bc453349 355 BZERO(UcasePassword, sizeof(UcasePassword));
ninoderkinderen 0:8d87bc453349 356 for (i = 0; i < secret_len; i++) {
ninoderkinderen 0:8d87bc453349 357 UcasePassword[i] = (u_char)toupper(secret[i]);
ninoderkinderen 0:8d87bc453349 358 }
ninoderkinderen 0:8d87bc453349 359 DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 );
ninoderkinderen 0:8d87bc453349 360 DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 );
ninoderkinderen 0:8d87bc453349 361 ChallengeResponse(rchallenge, PasswordHash, response->LANManResp);
ninoderkinderen 0:8d87bc453349 362 }
ninoderkinderen 0:8d87bc453349 363 #endif
ninoderkinderen 0:8d87bc453349 364
ninoderkinderen 0:8d87bc453349 365 void
ninoderkinderen 0:8d87bc453349 366 ChapMS( chap_state *cstate, char *rchallenge, int rchallenge_len, char *secret, int secret_len)
ninoderkinderen 0:8d87bc453349 367 {
ninoderkinderen 0:8d87bc453349 368 MS_ChapResponse response;
ninoderkinderen 0:8d87bc453349 369 #ifdef MSLANMAN
ninoderkinderen 0:8d87bc453349 370 extern int ms_lanman;
ninoderkinderen 0:8d87bc453349 371 #endif
ninoderkinderen 0:8d87bc453349 372
ninoderkinderen 0:8d87bc453349 373 #if 0
ninoderkinderen 0:8d87bc453349 374 CHAPDEBUG(LOG_INFO, ("ChapMS: secret is '%.*s'\n", secret_len, secret));
ninoderkinderen 0:8d87bc453349 375 #endif
ninoderkinderen 0:8d87bc453349 376 BZERO(&response, sizeof(response));
ninoderkinderen 0:8d87bc453349 377
ninoderkinderen 0:8d87bc453349 378 /* Calculate both always */
ninoderkinderen 0:8d87bc453349 379 ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response);
ninoderkinderen 0:8d87bc453349 380
ninoderkinderen 0:8d87bc453349 381 #ifdef MSLANMAN
ninoderkinderen 0:8d87bc453349 382 ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response);
ninoderkinderen 0:8d87bc453349 383
ninoderkinderen 0:8d87bc453349 384 /* prefered method is set by option */
ninoderkinderen 0:8d87bc453349 385 response.UseNT = !ms_lanman;
ninoderkinderen 0:8d87bc453349 386 #else
ninoderkinderen 0:8d87bc453349 387 response.UseNT = 1;
ninoderkinderen 0:8d87bc453349 388 #endif
ninoderkinderen 0:8d87bc453349 389
ninoderkinderen 0:8d87bc453349 390 BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN);
ninoderkinderen 0:8d87bc453349 391 cstate->resp_length = MS_CHAP_RESPONSE_LEN;
ninoderkinderen 0:8d87bc453349 392 }
ninoderkinderen 0:8d87bc453349 393
ninoderkinderen 0:8d87bc453349 394 #endif /* MSCHAP_SUPPORT */
ninoderkinderen 0:8d87bc453349 395
ninoderkinderen 0:8d87bc453349 396 #endif /* PPP_SUPPORT */