CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

EthernetInterface/lwip/netif/ppp/chpms.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /*** WARNING - THIS CODE HAS NOT BEEN FINISHED! ***/
GordonSin 0:0ed2a7c7190c 2 /*** The original PPPD code is written in a way to require either the UNIX DES
GordonSin 0:0ed2a7c7190c 3 encryption functions encrypt(3) and setkey(3) or the DES library libdes.
GordonSin 0:0ed2a7c7190c 4 Since both is not included in lwIP, MSCHAP currently does not work! */
GordonSin 0:0ed2a7c7190c 5 /*****************************************************************************
GordonSin 0:0ed2a7c7190c 6 * chpms.c - Network MicroSoft Challenge Handshake Authentication Protocol program file.
GordonSin 0:0ed2a7c7190c 7 *
GordonSin 0:0ed2a7c7190c 8 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
GordonSin 0:0ed2a7c7190c 9 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
GordonSin 0:0ed2a7c7190c 10 *
GordonSin 0:0ed2a7c7190c 11 * The authors hereby grant permission to use, copy, modify, distribute,
GordonSin 0:0ed2a7c7190c 12 * and license this software and its documentation for any purpose, provided
GordonSin 0:0ed2a7c7190c 13 * that existing copyright notices are retained in all copies and that this
GordonSin 0:0ed2a7c7190c 14 * notice and the following disclaimer are included verbatim in any
GordonSin 0:0ed2a7c7190c 15 * distributions. No written agreement, license, or royalty fee is required
GordonSin 0:0ed2a7c7190c 16 * for any of the authorized uses.
GordonSin 0:0ed2a7c7190c 17 *
GordonSin 0:0ed2a7c7190c 18 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
GordonSin 0:0ed2a7c7190c 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
GordonSin 0:0ed2a7c7190c 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
GordonSin 0:0ed2a7c7190c 21 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
GordonSin 0:0ed2a7c7190c 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
GordonSin 0:0ed2a7c7190c 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
GordonSin 0:0ed2a7c7190c 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
GordonSin 0:0ed2a7c7190c 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
GordonSin 0:0ed2a7c7190c 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
GordonSin 0:0ed2a7c7190c 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 28 *
GordonSin 0:0ed2a7c7190c 29 ******************************************************************************
GordonSin 0:0ed2a7c7190c 30 * REVISION HISTORY
GordonSin 0:0ed2a7c7190c 31 *
GordonSin 0:0ed2a7c7190c 32 * 03-01-01 Marc Boucher <marc@mbsi.ca>
GordonSin 0:0ed2a7c7190c 33 * Ported to lwIP.
GordonSin 0:0ed2a7c7190c 34 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
GordonSin 0:0ed2a7c7190c 35 * Original based on BSD chap_ms.c.
GordonSin 0:0ed2a7c7190c 36 *****************************************************************************/
GordonSin 0:0ed2a7c7190c 37 /*
GordonSin 0:0ed2a7c7190c 38 * chap_ms.c - Microsoft MS-CHAP compatible implementation.
GordonSin 0:0ed2a7c7190c 39 *
GordonSin 0:0ed2a7c7190c 40 * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
GordonSin 0:0ed2a7c7190c 41 * http://www.strataware.com/
GordonSin 0:0ed2a7c7190c 42 *
GordonSin 0:0ed2a7c7190c 43 * All rights reserved.
GordonSin 0:0ed2a7c7190c 44 *
GordonSin 0:0ed2a7c7190c 45 * Redistribution and use in source and binary forms are permitted
GordonSin 0:0ed2a7c7190c 46 * provided that the above copyright notice and this paragraph are
GordonSin 0:0ed2a7c7190c 47 * duplicated in all such forms and that any documentation,
GordonSin 0:0ed2a7c7190c 48 * advertising materials, and other materials related to such
GordonSin 0:0ed2a7c7190c 49 * distribution and use acknowledge that the software was developed
GordonSin 0:0ed2a7c7190c 50 * by Eric Rosenquist. The name of the author may not be used to
GordonSin 0:0ed2a7c7190c 51 * endorse or promote products derived from this software without
GordonSin 0:0ed2a7c7190c 52 * specific prior written permission.
GordonSin 0:0ed2a7c7190c 53 *
GordonSin 0:0ed2a7c7190c 54 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
GordonSin 0:0ed2a7c7190c 55 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
GordonSin 0:0ed2a7c7190c 56 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
GordonSin 0:0ed2a7c7190c 57 */
GordonSin 0:0ed2a7c7190c 58
GordonSin 0:0ed2a7c7190c 59 /*
GordonSin 0:0ed2a7c7190c 60 * Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997
GordonSin 0:0ed2a7c7190c 61 *
GordonSin 0:0ed2a7c7190c 62 * Implemented LANManager type password response to MS-CHAP challenges.
GordonSin 0:0ed2a7c7190c 63 * Now pppd provides both NT style and LANMan style blocks, and the
GordonSin 0:0ed2a7c7190c 64 * prefered is set by option "ms-lanman". Default is to use NT.
GordonSin 0:0ed2a7c7190c 65 * The hash text (StdText) was taken from Win95 RASAPI32.DLL.
GordonSin 0:0ed2a7c7190c 66 *
GordonSin 0:0ed2a7c7190c 67 * You should also use DOMAIN\\USERNAME as described in README.MSCHAP80
GordonSin 0:0ed2a7c7190c 68 */
GordonSin 0:0ed2a7c7190c 69
GordonSin 0:0ed2a7c7190c 70 #define USE_CRYPT
GordonSin 0:0ed2a7c7190c 71
GordonSin 0:0ed2a7c7190c 72 #include "lwip/opt.h"
GordonSin 0:0ed2a7c7190c 73
GordonSin 0:0ed2a7c7190c 74 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
GordonSin 0:0ed2a7c7190c 75
GordonSin 0:0ed2a7c7190c 76 #if MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
GordonSin 0:0ed2a7c7190c 77
GordonSin 0:0ed2a7c7190c 78 #include "ppp.h"
GordonSin 0:0ed2a7c7190c 79 #include "pppdebug.h"
GordonSin 0:0ed2a7c7190c 80
GordonSin 0:0ed2a7c7190c 81 #include "md4.h"
GordonSin 0:0ed2a7c7190c 82 #ifndef USE_CRYPT
GordonSin 0:0ed2a7c7190c 83 #include "des.h"
GordonSin 0:0ed2a7c7190c 84 #endif
GordonSin 0:0ed2a7c7190c 85 #include "chap.h"
GordonSin 0:0ed2a7c7190c 86 #include "chpms.h"
GordonSin 0:0ed2a7c7190c 87
GordonSin 0:0ed2a7c7190c 88 #include <string.h>
GordonSin 0:0ed2a7c7190c 89
GordonSin 0:0ed2a7c7190c 90
GordonSin 0:0ed2a7c7190c 91 /*************************/
GordonSin 0:0ed2a7c7190c 92 /*** LOCAL DEFINITIONS ***/
GordonSin 0:0ed2a7c7190c 93 /*************************/
GordonSin 0:0ed2a7c7190c 94
GordonSin 0:0ed2a7c7190c 95
GordonSin 0:0ed2a7c7190c 96 /************************/
GordonSin 0:0ed2a7c7190c 97 /*** LOCAL DATA TYPES ***/
GordonSin 0:0ed2a7c7190c 98 /************************/
GordonSin 0:0ed2a7c7190c 99 typedef struct {
GordonSin 0:0ed2a7c7190c 100 u_char LANManResp[24];
GordonSin 0:0ed2a7c7190c 101 u_char NTResp[24];
GordonSin 0:0ed2a7c7190c 102 u_char UseNT; /* If 1, ignore the LANMan response field */
GordonSin 0:0ed2a7c7190c 103 } MS_ChapResponse;
GordonSin 0:0ed2a7c7190c 104 /* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse),
GordonSin 0:0ed2a7c7190c 105 in case this struct gets padded. */
GordonSin 0:0ed2a7c7190c 106
GordonSin 0:0ed2a7c7190c 107
GordonSin 0:0ed2a7c7190c 108
GordonSin 0:0ed2a7c7190c 109 /***********************************/
GordonSin 0:0ed2a7c7190c 110 /*** LOCAL FUNCTION DECLARATIONS ***/
GordonSin 0:0ed2a7c7190c 111 /***********************************/
GordonSin 0:0ed2a7c7190c 112
GordonSin 0:0ed2a7c7190c 113 /* XXX Don't know what to do with these. */
GordonSin 0:0ed2a7c7190c 114 extern void setkey(const char *);
GordonSin 0:0ed2a7c7190c 115 extern void encrypt(char *, int);
GordonSin 0:0ed2a7c7190c 116
GordonSin 0:0ed2a7c7190c 117 static void DesEncrypt (u_char *, u_char *, u_char *);
GordonSin 0:0ed2a7c7190c 118 static void MakeKey (u_char *, u_char *);
GordonSin 0:0ed2a7c7190c 119
GordonSin 0:0ed2a7c7190c 120 #ifdef USE_CRYPT
GordonSin 0:0ed2a7c7190c 121 static void Expand (u_char *, u_char *);
GordonSin 0:0ed2a7c7190c 122 static void Collapse (u_char *, u_char *);
GordonSin 0:0ed2a7c7190c 123 #endif
GordonSin 0:0ed2a7c7190c 124
GordonSin 0:0ed2a7c7190c 125 static void ChallengeResponse(
GordonSin 0:0ed2a7c7190c 126 u_char *challenge, /* IN 8 octets */
GordonSin 0:0ed2a7c7190c 127 u_char *pwHash, /* IN 16 octets */
GordonSin 0:0ed2a7c7190c 128 u_char *response /* OUT 24 octets */
GordonSin 0:0ed2a7c7190c 129 );
GordonSin 0:0ed2a7c7190c 130 static void ChapMS_NT(
GordonSin 0:0ed2a7c7190c 131 char *rchallenge,
GordonSin 0:0ed2a7c7190c 132 int rchallenge_len,
GordonSin 0:0ed2a7c7190c 133 char *secret,
GordonSin 0:0ed2a7c7190c 134 int secret_len,
GordonSin 0:0ed2a7c7190c 135 MS_ChapResponse *response
GordonSin 0:0ed2a7c7190c 136 );
GordonSin 0:0ed2a7c7190c 137 static u_char Get7Bits(
GordonSin 0:0ed2a7c7190c 138 u_char *input,
GordonSin 0:0ed2a7c7190c 139 int startBit
GordonSin 0:0ed2a7c7190c 140 );
GordonSin 0:0ed2a7c7190c 141
GordonSin 0:0ed2a7c7190c 142 static void
GordonSin 0:0ed2a7c7190c 143 ChallengeResponse( u_char *challenge, /* IN 8 octets */
GordonSin 0:0ed2a7c7190c 144 u_char *pwHash, /* IN 16 octets */
GordonSin 0:0ed2a7c7190c 145 u_char *response /* OUT 24 octets */)
GordonSin 0:0ed2a7c7190c 146 {
GordonSin 0:0ed2a7c7190c 147 u_char ZPasswordHash[21];
GordonSin 0:0ed2a7c7190c 148
GordonSin 0:0ed2a7c7190c 149 BZERO(ZPasswordHash, sizeof(ZPasswordHash));
GordonSin 0:0ed2a7c7190c 150 BCOPY(pwHash, ZPasswordHash, 16);
GordonSin 0:0ed2a7c7190c 151
GordonSin 0:0ed2a7c7190c 152 #if 0
GordonSin 0:0ed2a7c7190c 153 log_packet(ZPasswordHash, sizeof(ZPasswordHash), "ChallengeResponse - ZPasswordHash", LOG_DEBUG);
GordonSin 0:0ed2a7c7190c 154 #endif
GordonSin 0:0ed2a7c7190c 155
GordonSin 0:0ed2a7c7190c 156 DesEncrypt(challenge, ZPasswordHash + 0, response + 0);
GordonSin 0:0ed2a7c7190c 157 DesEncrypt(challenge, ZPasswordHash + 7, response + 8);
GordonSin 0:0ed2a7c7190c 158 DesEncrypt(challenge, ZPasswordHash + 14, response + 16);
GordonSin 0:0ed2a7c7190c 159
GordonSin 0:0ed2a7c7190c 160 #if 0
GordonSin 0:0ed2a7c7190c 161 log_packet(response, 24, "ChallengeResponse - response", LOG_DEBUG);
GordonSin 0:0ed2a7c7190c 162 #endif
GordonSin 0:0ed2a7c7190c 163 }
GordonSin 0:0ed2a7c7190c 164
GordonSin 0:0ed2a7c7190c 165
GordonSin 0:0ed2a7c7190c 166 #ifdef USE_CRYPT
GordonSin 0:0ed2a7c7190c 167 static void
GordonSin 0:0ed2a7c7190c 168 DesEncrypt( u_char *clear, /* IN 8 octets */
GordonSin 0:0ed2a7c7190c 169 u_char *key, /* IN 7 octets */
GordonSin 0:0ed2a7c7190c 170 u_char *cipher /* OUT 8 octets */)
GordonSin 0:0ed2a7c7190c 171 {
GordonSin 0:0ed2a7c7190c 172 u_char des_key[8];
GordonSin 0:0ed2a7c7190c 173 u_char crypt_key[66];
GordonSin 0:0ed2a7c7190c 174 u_char des_input[66];
GordonSin 0:0ed2a7c7190c 175
GordonSin 0:0ed2a7c7190c 176 MakeKey(key, des_key);
GordonSin 0:0ed2a7c7190c 177
GordonSin 0:0ed2a7c7190c 178 Expand(des_key, crypt_key);
GordonSin 0:0ed2a7c7190c 179 setkey((char*)crypt_key);
GordonSin 0:0ed2a7c7190c 180
GordonSin 0:0ed2a7c7190c 181 #if 0
GordonSin 0:0ed2a7c7190c 182 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 183 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
GordonSin 0:0ed2a7c7190c 184 #endif
GordonSin 0:0ed2a7c7190c 185
GordonSin 0:0ed2a7c7190c 186 Expand(clear, des_input);
GordonSin 0:0ed2a7c7190c 187 encrypt((char*)des_input, 0);
GordonSin 0:0ed2a7c7190c 188 Collapse(des_input, cipher);
GordonSin 0:0ed2a7c7190c 189
GordonSin 0:0ed2a7c7190c 190 #if 0
GordonSin 0:0ed2a7c7190c 191 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 192 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
GordonSin 0:0ed2a7c7190c 193 #endif
GordonSin 0:0ed2a7c7190c 194 }
GordonSin 0:0ed2a7c7190c 195
GordonSin 0:0ed2a7c7190c 196 #else /* USE_CRYPT */
GordonSin 0:0ed2a7c7190c 197
GordonSin 0:0ed2a7c7190c 198 static void
GordonSin 0:0ed2a7c7190c 199 DesEncrypt( u_char *clear, /* IN 8 octets */
GordonSin 0:0ed2a7c7190c 200 u_char *key, /* IN 7 octets */
GordonSin 0:0ed2a7c7190c 201 u_char *cipher /* OUT 8 octets */)
GordonSin 0:0ed2a7c7190c 202 {
GordonSin 0:0ed2a7c7190c 203 des_cblock des_key;
GordonSin 0:0ed2a7c7190c 204 des_key_schedule key_schedule;
GordonSin 0:0ed2a7c7190c 205
GordonSin 0:0ed2a7c7190c 206 MakeKey(key, des_key);
GordonSin 0:0ed2a7c7190c 207
GordonSin 0:0ed2a7c7190c 208 des_set_key(&des_key, key_schedule);
GordonSin 0:0ed2a7c7190c 209
GordonSin 0:0ed2a7c7190c 210 #if 0
GordonSin 0:0ed2a7c7190c 211 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 212 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
GordonSin 0:0ed2a7c7190c 213 #endif
GordonSin 0:0ed2a7c7190c 214
GordonSin 0:0ed2a7c7190c 215 des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher, key_schedule, 1);
GordonSin 0:0ed2a7c7190c 216
GordonSin 0:0ed2a7c7190c 217 #if 0
GordonSin 0:0ed2a7c7190c 218 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 219 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
GordonSin 0:0ed2a7c7190c 220 #endif
GordonSin 0:0ed2a7c7190c 221 }
GordonSin 0:0ed2a7c7190c 222
GordonSin 0:0ed2a7c7190c 223 #endif /* USE_CRYPT */
GordonSin 0:0ed2a7c7190c 224
GordonSin 0:0ed2a7c7190c 225
GordonSin 0:0ed2a7c7190c 226 static u_char
GordonSin 0:0ed2a7c7190c 227 Get7Bits( u_char *input, int startBit)
GordonSin 0:0ed2a7c7190c 228 {
GordonSin 0:0ed2a7c7190c 229 register unsigned int word;
GordonSin 0:0ed2a7c7190c 230
GordonSin 0:0ed2a7c7190c 231 word = (unsigned)input[startBit / 8] << 8;
GordonSin 0:0ed2a7c7190c 232 word |= (unsigned)input[startBit / 8 + 1];
GordonSin 0:0ed2a7c7190c 233
GordonSin 0:0ed2a7c7190c 234 word >>= 15 - (startBit % 8 + 7);
GordonSin 0:0ed2a7c7190c 235
GordonSin 0:0ed2a7c7190c 236 return word & 0xFE;
GordonSin 0:0ed2a7c7190c 237 }
GordonSin 0:0ed2a7c7190c 238
GordonSin 0:0ed2a7c7190c 239 #ifdef USE_CRYPT
GordonSin 0:0ed2a7c7190c 240
GordonSin 0:0ed2a7c7190c 241 /* in == 8-byte string (expanded version of the 56-bit key)
GordonSin 0:0ed2a7c7190c 242 * out == 64-byte string where each byte is either 1 or 0
GordonSin 0:0ed2a7c7190c 243 * Note that the low-order "bit" is always ignored by by setkey()
GordonSin 0:0ed2a7c7190c 244 */
GordonSin 0:0ed2a7c7190c 245 static void
GordonSin 0:0ed2a7c7190c 246 Expand(u_char *in, u_char *out)
GordonSin 0:0ed2a7c7190c 247 {
GordonSin 0:0ed2a7c7190c 248 int j, c;
GordonSin 0:0ed2a7c7190c 249 int i;
GordonSin 0:0ed2a7c7190c 250
GordonSin 0:0ed2a7c7190c 251 for(i = 0; i < 64; in++){
GordonSin 0:0ed2a7c7190c 252 c = *in;
GordonSin 0:0ed2a7c7190c 253 for(j = 7; j >= 0; j--) {
GordonSin 0:0ed2a7c7190c 254 *out++ = (c >> j) & 01;
GordonSin 0:0ed2a7c7190c 255 }
GordonSin 0:0ed2a7c7190c 256 i += 8;
GordonSin 0:0ed2a7c7190c 257 }
GordonSin 0:0ed2a7c7190c 258 }
GordonSin 0:0ed2a7c7190c 259
GordonSin 0:0ed2a7c7190c 260 /* The inverse of Expand
GordonSin 0:0ed2a7c7190c 261 */
GordonSin 0:0ed2a7c7190c 262 static void
GordonSin 0:0ed2a7c7190c 263 Collapse(u_char *in, u_char *out)
GordonSin 0:0ed2a7c7190c 264 {
GordonSin 0:0ed2a7c7190c 265 int j;
GordonSin 0:0ed2a7c7190c 266 int i;
GordonSin 0:0ed2a7c7190c 267 unsigned int c;
GordonSin 0:0ed2a7c7190c 268
GordonSin 0:0ed2a7c7190c 269 for (i = 0; i < 64; i += 8, out++) {
GordonSin 0:0ed2a7c7190c 270 c = 0;
GordonSin 0:0ed2a7c7190c 271 for (j = 7; j >= 0; j--, in++) {
GordonSin 0:0ed2a7c7190c 272 c |= *in << j;
GordonSin 0:0ed2a7c7190c 273 }
GordonSin 0:0ed2a7c7190c 274 *out = c & 0xff;
GordonSin 0:0ed2a7c7190c 275 }
GordonSin 0:0ed2a7c7190c 276 }
GordonSin 0:0ed2a7c7190c 277 #endif
GordonSin 0:0ed2a7c7190c 278
GordonSin 0:0ed2a7c7190c 279 static void
GordonSin 0:0ed2a7c7190c 280 MakeKey( u_char *key, /* IN 56 bit DES key missing parity bits */
GordonSin 0:0ed2a7c7190c 281 u_char *des_key /* OUT 64 bit DES key with parity bits added */)
GordonSin 0:0ed2a7c7190c 282 {
GordonSin 0:0ed2a7c7190c 283 des_key[0] = Get7Bits(key, 0);
GordonSin 0:0ed2a7c7190c 284 des_key[1] = Get7Bits(key, 7);
GordonSin 0:0ed2a7c7190c 285 des_key[2] = Get7Bits(key, 14);
GordonSin 0:0ed2a7c7190c 286 des_key[3] = Get7Bits(key, 21);
GordonSin 0:0ed2a7c7190c 287 des_key[4] = Get7Bits(key, 28);
GordonSin 0:0ed2a7c7190c 288 des_key[5] = Get7Bits(key, 35);
GordonSin 0:0ed2a7c7190c 289 des_key[6] = Get7Bits(key, 42);
GordonSin 0:0ed2a7c7190c 290 des_key[7] = Get7Bits(key, 49);
GordonSin 0:0ed2a7c7190c 291
GordonSin 0:0ed2a7c7190c 292 #ifndef USE_CRYPT
GordonSin 0:0ed2a7c7190c 293 des_set_odd_parity((des_cblock *)des_key);
GordonSin 0:0ed2a7c7190c 294 #endif
GordonSin 0:0ed2a7c7190c 295
GordonSin 0:0ed2a7c7190c 296 #if 0
GordonSin 0:0ed2a7c7190c 297 CHAPDEBUG(LOG_INFO, ("MakeKey: 56-bit input : %02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 298 key[0], key[1], key[2], key[3], key[4], key[5], key[6]));
GordonSin 0:0ed2a7c7190c 299 CHAPDEBUG(LOG_INFO, ("MakeKey: 64-bit output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
GordonSin 0:0ed2a7c7190c 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]));
GordonSin 0:0ed2a7c7190c 301 #endif
GordonSin 0:0ed2a7c7190c 302 }
GordonSin 0:0ed2a7c7190c 303
GordonSin 0:0ed2a7c7190c 304 static void
GordonSin 0:0ed2a7c7190c 305 ChapMS_NT( char *rchallenge,
GordonSin 0:0ed2a7c7190c 306 int rchallenge_len,
GordonSin 0:0ed2a7c7190c 307 char *secret,
GordonSin 0:0ed2a7c7190c 308 int secret_len,
GordonSin 0:0ed2a7c7190c 309 MS_ChapResponse *response)
GordonSin 0:0ed2a7c7190c 310 {
GordonSin 0:0ed2a7c7190c 311 int i;
GordonSin 0:0ed2a7c7190c 312 MDstruct md4Context;
GordonSin 0:0ed2a7c7190c 313 u_char unicodePassword[MAX_NT_PASSWORD * 2];
GordonSin 0:0ed2a7c7190c 314 static int low_byte_first = -1;
GordonSin 0:0ed2a7c7190c 315
GordonSin 0:0ed2a7c7190c 316 LWIP_UNUSED_ARG(rchallenge_len);
GordonSin 0:0ed2a7c7190c 317
GordonSin 0:0ed2a7c7190c 318 /* Initialize the Unicode version of the secret (== password). */
GordonSin 0:0ed2a7c7190c 319 /* This implicitly supports 8-bit ISO8859/1 characters. */
GordonSin 0:0ed2a7c7190c 320 BZERO(unicodePassword, sizeof(unicodePassword));
GordonSin 0:0ed2a7c7190c 321 for (i = 0; i < secret_len; i++) {
GordonSin 0:0ed2a7c7190c 322 unicodePassword[i * 2] = (u_char)secret[i];
GordonSin 0:0ed2a7c7190c 323 }
GordonSin 0:0ed2a7c7190c 324 MDbegin(&md4Context);
GordonSin 0:0ed2a7c7190c 325 MDupdate(&md4Context, unicodePassword, secret_len * 2 * 8); /* Unicode is 2 bytes/char, *8 for bit count */
GordonSin 0:0ed2a7c7190c 326
GordonSin 0:0ed2a7c7190c 327 if (low_byte_first == -1) {
GordonSin 0:0ed2a7c7190c 328 low_byte_first = (PP_HTONS((unsigned short int)1) != 1);
GordonSin 0:0ed2a7c7190c 329 }
GordonSin 0:0ed2a7c7190c 330 if (low_byte_first == 0) {
GordonSin 0:0ed2a7c7190c 331 /* @todo: arg type - u_long* or u_int* ? */
GordonSin 0:0ed2a7c7190c 332 MDreverse((unsigned int*)&md4Context); /* sfb 961105 */
GordonSin 0:0ed2a7c7190c 333 }
GordonSin 0:0ed2a7c7190c 334
GordonSin 0:0ed2a7c7190c 335 MDupdate(&md4Context, NULL, 0); /* Tell MD4 we're done */
GordonSin 0:0ed2a7c7190c 336
GordonSin 0:0ed2a7c7190c 337 ChallengeResponse((u_char*)rchallenge, (u_char*)md4Context.buffer, response->NTResp);
GordonSin 0:0ed2a7c7190c 338 }
GordonSin 0:0ed2a7c7190c 339
GordonSin 0:0ed2a7c7190c 340 #ifdef MSLANMAN
GordonSin 0:0ed2a7c7190c 341 static u_char *StdText = (u_char *)"KGS!@#$%"; /* key from rasapi32.dll */
GordonSin 0:0ed2a7c7190c 342
GordonSin 0:0ed2a7c7190c 343 static void
GordonSin 0:0ed2a7c7190c 344 ChapMS_LANMan( char *rchallenge,
GordonSin 0:0ed2a7c7190c 345 int rchallenge_len,
GordonSin 0:0ed2a7c7190c 346 char *secret,
GordonSin 0:0ed2a7c7190c 347 int secret_len,
GordonSin 0:0ed2a7c7190c 348 MS_ChapResponse *response)
GordonSin 0:0ed2a7c7190c 349 {
GordonSin 0:0ed2a7c7190c 350 int i;
GordonSin 0:0ed2a7c7190c 351 u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */
GordonSin 0:0ed2a7c7190c 352 u_char PasswordHash[16];
GordonSin 0:0ed2a7c7190c 353
GordonSin 0:0ed2a7c7190c 354 /* LANMan password is case insensitive */
GordonSin 0:0ed2a7c7190c 355 BZERO(UcasePassword, sizeof(UcasePassword));
GordonSin 0:0ed2a7c7190c 356 for (i = 0; i < secret_len; i++) {
GordonSin 0:0ed2a7c7190c 357 UcasePassword[i] = (u_char)toupper(secret[i]);
GordonSin 0:0ed2a7c7190c 358 }
GordonSin 0:0ed2a7c7190c 359 DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 );
GordonSin 0:0ed2a7c7190c 360 DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 );
GordonSin 0:0ed2a7c7190c 361 ChallengeResponse(rchallenge, PasswordHash, response->LANManResp);
GordonSin 0:0ed2a7c7190c 362 }
GordonSin 0:0ed2a7c7190c 363 #endif
GordonSin 0:0ed2a7c7190c 364
GordonSin 0:0ed2a7c7190c 365 void
GordonSin 0:0ed2a7c7190c 366 ChapMS( chap_state *cstate, char *rchallenge, int rchallenge_len, char *secret, int secret_len)
GordonSin 0:0ed2a7c7190c 367 {
GordonSin 0:0ed2a7c7190c 368 MS_ChapResponse response;
GordonSin 0:0ed2a7c7190c 369 #ifdef MSLANMAN
GordonSin 0:0ed2a7c7190c 370 extern int ms_lanman;
GordonSin 0:0ed2a7c7190c 371 #endif
GordonSin 0:0ed2a7c7190c 372
GordonSin 0:0ed2a7c7190c 373 #if 0
GordonSin 0:0ed2a7c7190c 374 CHAPDEBUG(LOG_INFO, ("ChapMS: secret is '%.*s'\n", secret_len, secret));
GordonSin 0:0ed2a7c7190c 375 #endif
GordonSin 0:0ed2a7c7190c 376 BZERO(&response, sizeof(response));
GordonSin 0:0ed2a7c7190c 377
GordonSin 0:0ed2a7c7190c 378 /* Calculate both always */
GordonSin 0:0ed2a7c7190c 379 ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response);
GordonSin 0:0ed2a7c7190c 380
GordonSin 0:0ed2a7c7190c 381 #ifdef MSLANMAN
GordonSin 0:0ed2a7c7190c 382 ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response);
GordonSin 0:0ed2a7c7190c 383
GordonSin 0:0ed2a7c7190c 384 /* prefered method is set by option */
GordonSin 0:0ed2a7c7190c 385 response.UseNT = !ms_lanman;
GordonSin 0:0ed2a7c7190c 386 #else
GordonSin 0:0ed2a7c7190c 387 response.UseNT = 1;
GordonSin 0:0ed2a7c7190c 388 #endif
GordonSin 0:0ed2a7c7190c 389
GordonSin 0:0ed2a7c7190c 390 BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN);
GordonSin 0:0ed2a7c7190c 391 cstate->resp_length = MS_CHAP_RESPONSE_LEN;
GordonSin 0:0ed2a7c7190c 392 }
GordonSin 0:0ed2a7c7190c 393
GordonSin 0:0ed2a7c7190c 394 #endif /* MSCHAP_SUPPORT */
GordonSin 0:0ed2a7c7190c 395
GordonSin 0:0ed2a7c7190c 396 #endif /* PPP_SUPPORT */