FBI FRATER / Mbed 2 deprecated InetTest

Library for Bert van Dam's book "ARM MICROCONTROLLERS" For all chapters with internet.

Dependencies:   mbed

NetServices/lwip/netif/ppp/chpms.c@0:4edb816d21e1, 2015-10-16 (annotated)

Committer:
ICTFBI
Date:
Fri Oct 16 14:28:26 2015 +0000
Revision:
0:4edb816d21e1
Pre-update 16-10-15

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ICTFBI 0:4edb816d21e1 1 /*** WARNING - THIS CODE HAS NOT BEEN FINISHED! ***/
ICTFBI 0:4edb816d21e1 2 /*** The original PPPD code is written in a way to require either the UNIX DES
ICTFBI 0:4edb816d21e1 3 encryption functions encrypt(3) and setkey(3) or the DES library libdes.
ICTFBI 0:4edb816d21e1 4 Since both is not included in lwIP, MSCHAP currently does not work! */
ICTFBI 0:4edb816d21e1 5 /*****************************************************************************
ICTFBI 0:4edb816d21e1 6 * chpms.c - Network MicroSoft Challenge Handshake Authentication Protocol program file.
ICTFBI 0:4edb816d21e1 7 *
ICTFBI 0:4edb816d21e1 8 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
ICTFBI 0:4edb816d21e1 9 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
ICTFBI 0:4edb816d21e1 10 *
ICTFBI 0:4edb816d21e1 11 * The authors hereby grant permission to use, copy, modify, distribute,
ICTFBI 0:4edb816d21e1 12 * and license this software and its documentation for any purpose, provided
ICTFBI 0:4edb816d21e1 13 * that existing copyright notices are retained in all copies and that this
ICTFBI 0:4edb816d21e1 14 * notice and the following disclaimer are included verbatim in any
ICTFBI 0:4edb816d21e1 15 * distributions. No written agreement, license, or royalty fee is required
ICTFBI 0:4edb816d21e1 16 * for any of the authorized uses.
ICTFBI 0:4edb816d21e1 17 *
ICTFBI 0:4edb816d21e1 18 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
ICTFBI 0:4edb816d21e1 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
ICTFBI 0:4edb816d21e1 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
ICTFBI 0:4edb816d21e1 21 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
ICTFBI 0:4edb816d21e1 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
ICTFBI 0:4edb816d21e1 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
ICTFBI 0:4edb816d21e1 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
ICTFBI 0:4edb816d21e1 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
ICTFBI 0:4edb816d21e1 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
ICTFBI 0:4edb816d21e1 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ICTFBI 0:4edb816d21e1 28 *
ICTFBI 0:4edb816d21e1 29 ******************************************************************************
ICTFBI 0:4edb816d21e1 30 * REVISION HISTORY
ICTFBI 0:4edb816d21e1 31 *
ICTFBI 0:4edb816d21e1 32 * 03-01-01 Marc Boucher <marc@mbsi.ca>
ICTFBI 0:4edb816d21e1 33 * Ported to lwIP.
ICTFBI 0:4edb816d21e1 34 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
ICTFBI 0:4edb816d21e1 35 * Original based on BSD chap_ms.c.
ICTFBI 0:4edb816d21e1 36 *****************************************************************************/
ICTFBI 0:4edb816d21e1 37 /*
ICTFBI 0:4edb816d21e1 38 * chap_ms.c - Microsoft MS-CHAP compatible implementation.
ICTFBI 0:4edb816d21e1 39 *
ICTFBI 0:4edb816d21e1 40 * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
ICTFBI 0:4edb816d21e1 41 * http://www.strataware.com/
ICTFBI 0:4edb816d21e1 42 *
ICTFBI 0:4edb816d21e1 43 * All rights reserved.
ICTFBI 0:4edb816d21e1 44 *
ICTFBI 0:4edb816d21e1 45 * Redistribution and use in source and binary forms are permitted
ICTFBI 0:4edb816d21e1 46 * provided that the above copyright notice and this paragraph are
ICTFBI 0:4edb816d21e1 47 * duplicated in all such forms and that any documentation,
ICTFBI 0:4edb816d21e1 48 * advertising materials, and other materials related to such
ICTFBI 0:4edb816d21e1 49 * distribution and use acknowledge that the software was developed
ICTFBI 0:4edb816d21e1 50 * by Eric Rosenquist. The name of the author may not be used to
ICTFBI 0:4edb816d21e1 51 * endorse or promote products derived from this software without
ICTFBI 0:4edb816d21e1 52 * specific prior written permission.
ICTFBI 0:4edb816d21e1 53 *
ICTFBI 0:4edb816d21e1 54 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
ICTFBI 0:4edb816d21e1 55 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
ICTFBI 0:4edb816d21e1 56 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
ICTFBI 0:4edb816d21e1 57 */
ICTFBI 0:4edb816d21e1 58
ICTFBI 0:4edb816d21e1 59 /*
ICTFBI 0:4edb816d21e1 60 * Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997
ICTFBI 0:4edb816d21e1 61 *
ICTFBI 0:4edb816d21e1 62 * Implemented LANManager type password response to MS-CHAP challenges.
ICTFBI 0:4edb816d21e1 63 * Now pppd provides both NT style and LANMan style blocks, and the
ICTFBI 0:4edb816d21e1 64 * prefered is set by option "ms-lanman". Default is to use NT.
ICTFBI 0:4edb816d21e1 65 * The hash text (StdText) was taken from Win95 RASAPI32.DLL.
ICTFBI 0:4edb816d21e1 66 *
ICTFBI 0:4edb816d21e1 67 * You should also use DOMAIN\\USERNAME as described in README.MSCHAP80
ICTFBI 0:4edb816d21e1 68 */
ICTFBI 0:4edb816d21e1 69
ICTFBI 0:4edb816d21e1 70 #define USE_CRYPT
ICTFBI 0:4edb816d21e1 71
ICTFBI 0:4edb816d21e1 72 #include "lwip/opt.h"
ICTFBI 0:4edb816d21e1 73
ICTFBI 0:4edb816d21e1 74 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ICTFBI 0:4edb816d21e1 75
ICTFBI 0:4edb816d21e1 76 #if MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
ICTFBI 0:4edb816d21e1 77
ICTFBI 0:4edb816d21e1 78 #include "ppp.h"
ICTFBI 0:4edb816d21e1 79 #include "pppdebug.h"
ICTFBI 0:4edb816d21e1 80
ICTFBI 0:4edb816d21e1 81 #include "md4.h"
ICTFBI 0:4edb816d21e1 82 #ifndef USE_CRYPT
ICTFBI 0:4edb816d21e1 83 #include "des.h"
ICTFBI 0:4edb816d21e1 84 #endif
ICTFBI 0:4edb816d21e1 85 #include "chap.h"
ICTFBI 0:4edb816d21e1 86 #include "chpms.h"
ICTFBI 0:4edb816d21e1 87
ICTFBI 0:4edb816d21e1 88 #include <string.h>
ICTFBI 0:4edb816d21e1 89
ICTFBI 0:4edb816d21e1 90
ICTFBI 0:4edb816d21e1 91 /*************************/
ICTFBI 0:4edb816d21e1 92 /*** LOCAL DEFINITIONS ***/
ICTFBI 0:4edb816d21e1 93 /*************************/
ICTFBI 0:4edb816d21e1 94
ICTFBI 0:4edb816d21e1 95
ICTFBI 0:4edb816d21e1 96 /************************/
ICTFBI 0:4edb816d21e1 97 /*** LOCAL DATA TYPES ***/
ICTFBI 0:4edb816d21e1 98 /************************/
ICTFBI 0:4edb816d21e1 99 typedef struct {
ICTFBI 0:4edb816d21e1 100 u_char LANManResp[24];
ICTFBI 0:4edb816d21e1 101 u_char NTResp[24];
ICTFBI 0:4edb816d21e1 102 u_char UseNT; /* If 1, ignore the LANMan response field */
ICTFBI 0:4edb816d21e1 103 } MS_ChapResponse;
ICTFBI 0:4edb816d21e1 104 /* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse),
ICTFBI 0:4edb816d21e1 105 in case this struct gets padded. */
ICTFBI 0:4edb816d21e1 106
ICTFBI 0:4edb816d21e1 107
ICTFBI 0:4edb816d21e1 108
ICTFBI 0:4edb816d21e1 109 /***********************************/
ICTFBI 0:4edb816d21e1 110 /*** LOCAL FUNCTION DECLARATIONS ***/
ICTFBI 0:4edb816d21e1 111 /***********************************/
ICTFBI 0:4edb816d21e1 112
ICTFBI 0:4edb816d21e1 113 /* XXX Don't know what to do with these. */
ICTFBI 0:4edb816d21e1 114 extern void setkey(const char *);
ICTFBI 0:4edb816d21e1 115 extern void encrypt(char *, int);
ICTFBI 0:4edb816d21e1 116
ICTFBI 0:4edb816d21e1 117 static void DesEncrypt (u_char *, u_char *, u_char *);
ICTFBI 0:4edb816d21e1 118 static void MakeKey (u_char *, u_char *);
ICTFBI 0:4edb816d21e1 119
ICTFBI 0:4edb816d21e1 120 #ifdef USE_CRYPT
ICTFBI 0:4edb816d21e1 121 static void Expand (u_char *, u_char *);
ICTFBI 0:4edb816d21e1 122 static void Collapse (u_char *, u_char *);
ICTFBI 0:4edb816d21e1 123 #endif
ICTFBI 0:4edb816d21e1 124
ICTFBI 0:4edb816d21e1 125 static void ChallengeResponse(
ICTFBI 0:4edb816d21e1 126 u_char *challenge, /* IN 8 octets */
ICTFBI 0:4edb816d21e1 127 u_char *pwHash, /* IN 16 octets */
ICTFBI 0:4edb816d21e1 128 u_char *response /* OUT 24 octets */
ICTFBI 0:4edb816d21e1 129 );
ICTFBI 0:4edb816d21e1 130 static void ChapMS_NT(
ICTFBI 0:4edb816d21e1 131 char *rchallenge,
ICTFBI 0:4edb816d21e1 132 int rchallenge_len,
ICTFBI 0:4edb816d21e1 133 char *secret,
ICTFBI 0:4edb816d21e1 134 int secret_len,
ICTFBI 0:4edb816d21e1 135 MS_ChapResponse *response
ICTFBI 0:4edb816d21e1 136 );
ICTFBI 0:4edb816d21e1 137 static u_char Get7Bits(
ICTFBI 0:4edb816d21e1 138 u_char *input,
ICTFBI 0:4edb816d21e1 139 int startBit
ICTFBI 0:4edb816d21e1 140 );
ICTFBI 0:4edb816d21e1 141
ICTFBI 0:4edb816d21e1 142 static void
ICTFBI 0:4edb816d21e1 143 ChallengeResponse( u_char *challenge, /* IN 8 octets */
ICTFBI 0:4edb816d21e1 144 u_char *pwHash, /* IN 16 octets */
ICTFBI 0:4edb816d21e1 145 u_char *response /* OUT 24 octets */)
ICTFBI 0:4edb816d21e1 146 {
ICTFBI 0:4edb816d21e1 147 u_char ZPasswordHash[21];
ICTFBI 0:4edb816d21e1 148
ICTFBI 0:4edb816d21e1 149 BZERO(ZPasswordHash, sizeof(ZPasswordHash));
ICTFBI 0:4edb816d21e1 150 BCOPY(pwHash, ZPasswordHash, 16);
ICTFBI 0:4edb816d21e1 151
ICTFBI 0:4edb816d21e1 152 #if 0
ICTFBI 0:4edb816d21e1 153 log_packet(ZPasswordHash, sizeof(ZPasswordHash), "ChallengeResponse - ZPasswordHash", LOG_DEBUG);
ICTFBI 0:4edb816d21e1 154 #endif
ICTFBI 0:4edb816d21e1 155
ICTFBI 0:4edb816d21e1 156 DesEncrypt(challenge, ZPasswordHash + 0, response + 0);
ICTFBI 0:4edb816d21e1 157 DesEncrypt(challenge, ZPasswordHash + 7, response + 8);
ICTFBI 0:4edb816d21e1 158 DesEncrypt(challenge, ZPasswordHash + 14, response + 16);
ICTFBI 0:4edb816d21e1 159
ICTFBI 0:4edb816d21e1 160 #if 0
ICTFBI 0:4edb816d21e1 161 log_packet(response, 24, "ChallengeResponse - response", LOG_DEBUG);
ICTFBI 0:4edb816d21e1 162 #endif
ICTFBI 0:4edb816d21e1 163 }
ICTFBI 0:4edb816d21e1 164
ICTFBI 0:4edb816d21e1 165
ICTFBI 0:4edb816d21e1 166 #ifdef USE_CRYPT
ICTFBI 0:4edb816d21e1 167 static void
ICTFBI 0:4edb816d21e1 168 DesEncrypt( u_char *clear, /* IN 8 octets */
ICTFBI 0:4edb816d21e1 169 u_char *key, /* IN 7 octets */
ICTFBI 0:4edb816d21e1 170 u_char *cipher /* OUT 8 octets */)
ICTFBI 0:4edb816d21e1 171 {
ICTFBI 0:4edb816d21e1 172 u_char des_key[8];
ICTFBI 0:4edb816d21e1 173 u_char crypt_key[66];
ICTFBI 0:4edb816d21e1 174 u_char des_input[66];
ICTFBI 0:4edb816d21e1 175
ICTFBI 0:4edb816d21e1 176 MakeKey(key, des_key);
ICTFBI 0:4edb816d21e1 177
ICTFBI 0:4edb816d21e1 178 Expand(des_key, crypt_key);
ICTFBI 0:4edb816d21e1 179 setkey((char*)crypt_key);
ICTFBI 0:4edb816d21e1 180
ICTFBI 0:4edb816d21e1 181 #if 0
ICTFBI 0:4edb816d21e1 182 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 183 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
ICTFBI 0:4edb816d21e1 184 #endif
ICTFBI 0:4edb816d21e1 185
ICTFBI 0:4edb816d21e1 186 Expand(clear, des_input);
ICTFBI 0:4edb816d21e1 187 encrypt((char*)des_input, 0);
ICTFBI 0:4edb816d21e1 188 Collapse(des_input, cipher);
ICTFBI 0:4edb816d21e1 189
ICTFBI 0:4edb816d21e1 190 #if 0
ICTFBI 0:4edb816d21e1 191 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 192 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
ICTFBI 0:4edb816d21e1 193 #endif
ICTFBI 0:4edb816d21e1 194 }
ICTFBI 0:4edb816d21e1 195
ICTFBI 0:4edb816d21e1 196 #else /* USE_CRYPT */
ICTFBI 0:4edb816d21e1 197
ICTFBI 0:4edb816d21e1 198 static void
ICTFBI 0:4edb816d21e1 199 DesEncrypt( u_char *clear, /* IN 8 octets */
ICTFBI 0:4edb816d21e1 200 u_char *key, /* IN 7 octets */
ICTFBI 0:4edb816d21e1 201 u_char *cipher /* OUT 8 octets */)
ICTFBI 0:4edb816d21e1 202 {
ICTFBI 0:4edb816d21e1 203 des_cblock des_key;
ICTFBI 0:4edb816d21e1 204 des_key_schedule key_schedule;
ICTFBI 0:4edb816d21e1 205
ICTFBI 0:4edb816d21e1 206 MakeKey(key, des_key);
ICTFBI 0:4edb816d21e1 207
ICTFBI 0:4edb816d21e1 208 des_set_key(&des_key, key_schedule);
ICTFBI 0:4edb816d21e1 209
ICTFBI 0:4edb816d21e1 210 #if 0
ICTFBI 0:4edb816d21e1 211 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 212 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
ICTFBI 0:4edb816d21e1 213 #endif
ICTFBI 0:4edb816d21e1 214
ICTFBI 0:4edb816d21e1 215 des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher, key_schedule, 1);
ICTFBI 0:4edb816d21e1 216
ICTFBI 0:4edb816d21e1 217 #if 0
ICTFBI 0:4edb816d21e1 218 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 219 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
ICTFBI 0:4edb816d21e1 220 #endif
ICTFBI 0:4edb816d21e1 221 }
ICTFBI 0:4edb816d21e1 222
ICTFBI 0:4edb816d21e1 223 #endif /* USE_CRYPT */
ICTFBI 0:4edb816d21e1 224
ICTFBI 0:4edb816d21e1 225
ICTFBI 0:4edb816d21e1 226 static u_char
ICTFBI 0:4edb816d21e1 227 Get7Bits( u_char *input, int startBit)
ICTFBI 0:4edb816d21e1 228 {
ICTFBI 0:4edb816d21e1 229 register unsigned int word;
ICTFBI 0:4edb816d21e1 230
ICTFBI 0:4edb816d21e1 231 word = (unsigned)input[startBit / 8] << 8;
ICTFBI 0:4edb816d21e1 232 word |= (unsigned)input[startBit / 8 + 1];
ICTFBI 0:4edb816d21e1 233
ICTFBI 0:4edb816d21e1 234 word >>= 15 - (startBit % 8 + 7);
ICTFBI 0:4edb816d21e1 235
ICTFBI 0:4edb816d21e1 236 return word & 0xFE;
ICTFBI 0:4edb816d21e1 237 }
ICTFBI 0:4edb816d21e1 238
ICTFBI 0:4edb816d21e1 239 #ifdef USE_CRYPT
ICTFBI 0:4edb816d21e1 240
ICTFBI 0:4edb816d21e1 241 /* in == 8-byte string (expanded version of the 56-bit key)
ICTFBI 0:4edb816d21e1 242 * out == 64-byte string where each byte is either 1 or 0
ICTFBI 0:4edb816d21e1 243 * Note that the low-order "bit" is always ignored by by setkey()
ICTFBI 0:4edb816d21e1 244 */
ICTFBI 0:4edb816d21e1 245 static void
ICTFBI 0:4edb816d21e1 246 Expand(u_char *in, u_char *out)
ICTFBI 0:4edb816d21e1 247 {
ICTFBI 0:4edb816d21e1 248 int j, c;
ICTFBI 0:4edb816d21e1 249 int i;
ICTFBI 0:4edb816d21e1 250
ICTFBI 0:4edb816d21e1 251 for(i = 0; i < 64; in++){
ICTFBI 0:4edb816d21e1 252 c = *in;
ICTFBI 0:4edb816d21e1 253 for(j = 7; j >= 0; j--) {
ICTFBI 0:4edb816d21e1 254 *out++ = (c >> j) & 01;
ICTFBI 0:4edb816d21e1 255 }
ICTFBI 0:4edb816d21e1 256 i += 8;
ICTFBI 0:4edb816d21e1 257 }
ICTFBI 0:4edb816d21e1 258 }
ICTFBI 0:4edb816d21e1 259
ICTFBI 0:4edb816d21e1 260 /* The inverse of Expand
ICTFBI 0:4edb816d21e1 261 */
ICTFBI 0:4edb816d21e1 262 static void
ICTFBI 0:4edb816d21e1 263 Collapse(u_char *in, u_char *out)
ICTFBI 0:4edb816d21e1 264 {
ICTFBI 0:4edb816d21e1 265 int j;
ICTFBI 0:4edb816d21e1 266 int i;
ICTFBI 0:4edb816d21e1 267 unsigned int c;
ICTFBI 0:4edb816d21e1 268
ICTFBI 0:4edb816d21e1 269 for (i = 0; i < 64; i += 8, out++) {
ICTFBI 0:4edb816d21e1 270 c = 0;
ICTFBI 0:4edb816d21e1 271 for (j = 7; j >= 0; j--, in++) {
ICTFBI 0:4edb816d21e1 272 c |= *in << j;
ICTFBI 0:4edb816d21e1 273 }
ICTFBI 0:4edb816d21e1 274 *out = c & 0xff;
ICTFBI 0:4edb816d21e1 275 }
ICTFBI 0:4edb816d21e1 276 }
ICTFBI 0:4edb816d21e1 277 #endif
ICTFBI 0:4edb816d21e1 278
ICTFBI 0:4edb816d21e1 279 static void
ICTFBI 0:4edb816d21e1 280 MakeKey( u_char *key, /* IN 56 bit DES key missing parity bits */
ICTFBI 0:4edb816d21e1 281 u_char *des_key /* OUT 64 bit DES key with parity bits added */)
ICTFBI 0:4edb816d21e1 282 {
ICTFBI 0:4edb816d21e1 283 des_key[0] = Get7Bits(key, 0);
ICTFBI 0:4edb816d21e1 284 des_key[1] = Get7Bits(key, 7);
ICTFBI 0:4edb816d21e1 285 des_key[2] = Get7Bits(key, 14);
ICTFBI 0:4edb816d21e1 286 des_key[3] = Get7Bits(key, 21);
ICTFBI 0:4edb816d21e1 287 des_key[4] = Get7Bits(key, 28);
ICTFBI 0:4edb816d21e1 288 des_key[5] = Get7Bits(key, 35);
ICTFBI 0:4edb816d21e1 289 des_key[6] = Get7Bits(key, 42);
ICTFBI 0:4edb816d21e1 290 des_key[7] = Get7Bits(key, 49);
ICTFBI 0:4edb816d21e1 291
ICTFBI 0:4edb816d21e1 292 #ifndef USE_CRYPT
ICTFBI 0:4edb816d21e1 293 des_set_odd_parity((des_cblock *)des_key);
ICTFBI 0:4edb816d21e1 294 #endif
ICTFBI 0:4edb816d21e1 295
ICTFBI 0:4edb816d21e1 296 #if 0
ICTFBI 0:4edb816d21e1 297 CHAPDEBUG(LOG_INFO, ("MakeKey: 56-bit input : %02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 298 key[0], key[1], key[2], key[3], key[4], key[5], key[6]));
ICTFBI 0:4edb816d21e1 299 CHAPDEBUG(LOG_INFO, ("MakeKey: 64-bit output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
ICTFBI 0:4edb816d21e1 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]));
ICTFBI 0:4edb816d21e1 301 #endif
ICTFBI 0:4edb816d21e1 302 }
ICTFBI 0:4edb816d21e1 303
ICTFBI 0:4edb816d21e1 304 static void
ICTFBI 0:4edb816d21e1 305 ChapMS_NT( char *rchallenge,
ICTFBI 0:4edb816d21e1 306 int rchallenge_len,
ICTFBI 0:4edb816d21e1 307 char *secret,
ICTFBI 0:4edb816d21e1 308 int secret_len,
ICTFBI 0:4edb816d21e1 309 MS_ChapResponse *response)
ICTFBI 0:4edb816d21e1 310 {
ICTFBI 0:4edb816d21e1 311 int i;
ICTFBI 0:4edb816d21e1 312 MDstruct md4Context;
ICTFBI 0:4edb816d21e1 313 u_char unicodePassword[MAX_NT_PASSWORD * 2];
ICTFBI 0:4edb816d21e1 314 static int low_byte_first = -1;
ICTFBI 0:4edb816d21e1 315
ICTFBI 0:4edb816d21e1 316 LWIP_UNUSED_ARG(rchallenge_len);
ICTFBI 0:4edb816d21e1 317
ICTFBI 0:4edb816d21e1 318 /* Initialize the Unicode version of the secret (== password). */
ICTFBI 0:4edb816d21e1 319 /* This implicitly supports 8-bit ISO8859/1 characters. */
ICTFBI 0:4edb816d21e1 320 BZERO(unicodePassword, sizeof(unicodePassword));
ICTFBI 0:4edb816d21e1 321 for (i = 0; i < secret_len; i++) {
ICTFBI 0:4edb816d21e1 322 unicodePassword[i * 2] = (u_char)secret[i];
ICTFBI 0:4edb816d21e1 323 }
ICTFBI 0:4edb816d21e1 324 MDbegin(&md4Context);
ICTFBI 0:4edb816d21e1 325 MDupdate(&md4Context, unicodePassword, secret_len * 2 * 8); /* Unicode is 2 bytes/char, *8 for bit count */
ICTFBI 0:4edb816d21e1 326
ICTFBI 0:4edb816d21e1 327 if (low_byte_first == -1) {
ICTFBI 0:4edb816d21e1 328 low_byte_first = (PP_HTONS((unsigned short int)1) != 1);
ICTFBI 0:4edb816d21e1 329 }
ICTFBI 0:4edb816d21e1 330 if (low_byte_first == 0) {
ICTFBI 0:4edb816d21e1 331 /* @todo: arg type - u_long* or u_int* ? */
ICTFBI 0:4edb816d21e1 332 MDreverse((unsigned int*)&md4Context); /* sfb 961105 */
ICTFBI 0:4edb816d21e1 333 }
ICTFBI 0:4edb816d21e1 334
ICTFBI 0:4edb816d21e1 335 MDupdate(&md4Context, NULL, 0); /* Tell MD4 we're done */
ICTFBI 0:4edb816d21e1 336
ICTFBI 0:4edb816d21e1 337 ChallengeResponse((u_char*)rchallenge, (u_char*)md4Context.buffer, response->NTResp);
ICTFBI 0:4edb816d21e1 338 }
ICTFBI 0:4edb816d21e1 339
ICTFBI 0:4edb816d21e1 340 #ifdef MSLANMAN
ICTFBI 0:4edb816d21e1 341 static u_char *StdText = (u_char *)"KGS!@#$%"; /* key from rasapi32.dll */
ICTFBI 0:4edb816d21e1 342
ICTFBI 0:4edb816d21e1 343 static void
ICTFBI 0:4edb816d21e1 344 ChapMS_LANMan( char *rchallenge,
ICTFBI 0:4edb816d21e1 345 int rchallenge_len,
ICTFBI 0:4edb816d21e1 346 char *secret,
ICTFBI 0:4edb816d21e1 347 int secret_len,
ICTFBI 0:4edb816d21e1 348 MS_ChapResponse *response)
ICTFBI 0:4edb816d21e1 349 {
ICTFBI 0:4edb816d21e1 350 int i;
ICTFBI 0:4edb816d21e1 351 u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */
ICTFBI 0:4edb816d21e1 352 u_char PasswordHash[16];
ICTFBI 0:4edb816d21e1 353
ICTFBI 0:4edb816d21e1 354 /* LANMan password is case insensitive */
ICTFBI 0:4edb816d21e1 355 BZERO(UcasePassword, sizeof(UcasePassword));
ICTFBI 0:4edb816d21e1 356 for (i = 0; i < secret_len; i++) {
ICTFBI 0:4edb816d21e1 357 UcasePassword[i] = (u_char)toupper(secret[i]);
ICTFBI 0:4edb816d21e1 358 }
ICTFBI 0:4edb816d21e1 359 DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 );
ICTFBI 0:4edb816d21e1 360 DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 );
ICTFBI 0:4edb816d21e1 361 ChallengeResponse(rchallenge, PasswordHash, response->LANManResp);
ICTFBI 0:4edb816d21e1 362 }
ICTFBI 0:4edb816d21e1 363 #endif
ICTFBI 0:4edb816d21e1 364
ICTFBI 0:4edb816d21e1 365 void
ICTFBI 0:4edb816d21e1 366 ChapMS( chap_state *cstate, char *rchallenge, int rchallenge_len, char *secret, int secret_len)
ICTFBI 0:4edb816d21e1 367 {
ICTFBI 0:4edb816d21e1 368 MS_ChapResponse response;
ICTFBI 0:4edb816d21e1 369 #ifdef MSLANMAN
ICTFBI 0:4edb816d21e1 370 extern int ms_lanman;
ICTFBI 0:4edb816d21e1 371 #endif
ICTFBI 0:4edb816d21e1 372
ICTFBI 0:4edb816d21e1 373 #if 0
ICTFBI 0:4edb816d21e1 374 CHAPDEBUG(LOG_INFO, ("ChapMS: secret is '%.*s'\n", secret_len, secret));
ICTFBI 0:4edb816d21e1 375 #endif
ICTFBI 0:4edb816d21e1 376 BZERO(&response, sizeof(response));
ICTFBI 0:4edb816d21e1 377
ICTFBI 0:4edb816d21e1 378 /* Calculate both always */
ICTFBI 0:4edb816d21e1 379 ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response);
ICTFBI 0:4edb816d21e1 380
ICTFBI 0:4edb816d21e1 381 #ifdef MSLANMAN
ICTFBI 0:4edb816d21e1 382 ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response);
ICTFBI 0:4edb816d21e1 383
ICTFBI 0:4edb816d21e1 384 /* prefered method is set by option */
ICTFBI 0:4edb816d21e1 385 response.UseNT = !ms_lanman;
ICTFBI 0:4edb816d21e1 386 #else
ICTFBI 0:4edb816d21e1 387 response.UseNT = 1;
ICTFBI 0:4edb816d21e1 388 #endif
ICTFBI 0:4edb816d21e1 389
ICTFBI 0:4edb816d21e1 390 BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN);
ICTFBI 0:4edb816d21e1 391 cstate->resp_length = MS_CHAP_RESPONSE_LEN;
ICTFBI 0:4edb816d21e1 392 }
ICTFBI 0:4edb816d21e1 393
ICTFBI 0:4edb816d21e1 394 #endif /* MSCHAP_SUPPORT */
ICTFBI 0:4edb816d21e1 395
ICTFBI 0:4edb816d21e1 396 #endif /* PPP_SUPPORT */