IBM Watson IoT / Mbed OS IBMIoTClientEthernetExample

Contains example code to connect the mbed LPC1768 or FRDM-K64F devices to the IBM Internet of Things Cloud service via ethernet.

Dependencies:   C12832 MQTT LM75B MMA7660

Dependents:   MFT_IoT_demo_USB400 IBM_RFID

EthernetInterface/lwip/netif/ppp/chpms.c@6:37b6d0d56190, 2014-08-20 (annotated)

Committer:
samdanbury
Date:
Wed Aug 20 12:45:14 2014 +0000
Revision:
6:37b6d0d56190
Code completely changed to improve the structure, flow and memory usage of the application

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /*** WARNING - THIS CODE HAS NOT BEEN FINISHED! ***/
samdanbury 6:37b6d0d56190 2 /*** The original PPPD code is written in a way to require either the UNIX DES
samdanbury 6:37b6d0d56190 3 encryption functions encrypt(3) and setkey(3) or the DES library libdes.
samdanbury 6:37b6d0d56190 4 Since both is not included in lwIP, MSCHAP currently does not work! */
samdanbury 6:37b6d0d56190 5 /*****************************************************************************
samdanbury 6:37b6d0d56190 6 * chpms.c - Network MicroSoft Challenge Handshake Authentication Protocol program file.
samdanbury 6:37b6d0d56190 7 *
samdanbury 6:37b6d0d56190 8 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
samdanbury 6:37b6d0d56190 9 * Copyright (c) 1997 by Global Election Systems Inc. All rights reserved.
samdanbury 6:37b6d0d56190 10 *
samdanbury 6:37b6d0d56190 11 * The authors hereby grant permission to use, copy, modify, distribute,
samdanbury 6:37b6d0d56190 12 * and license this software and its documentation for any purpose, provided
samdanbury 6:37b6d0d56190 13 * that existing copyright notices are retained in all copies and that this
samdanbury 6:37b6d0d56190 14 * notice and the following disclaimer are included verbatim in any
samdanbury 6:37b6d0d56190 15 * distributions. No written agreement, license, or royalty fee is required
samdanbury 6:37b6d0d56190 16 * for any of the authorized uses.
samdanbury 6:37b6d0d56190 17 *
samdanbury 6:37b6d0d56190 18 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
samdanbury 6:37b6d0d56190 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
samdanbury 6:37b6d0d56190 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
samdanbury 6:37b6d0d56190 21 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
samdanbury 6:37b6d0d56190 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
samdanbury 6:37b6d0d56190 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
samdanbury 6:37b6d0d56190 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
samdanbury 6:37b6d0d56190 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
samdanbury 6:37b6d0d56190 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
samdanbury 6:37b6d0d56190 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
samdanbury 6:37b6d0d56190 28 *
samdanbury 6:37b6d0d56190 29 ******************************************************************************
samdanbury 6:37b6d0d56190 30 * REVISION HISTORY
samdanbury 6:37b6d0d56190 31 *
samdanbury 6:37b6d0d56190 32 * 03-01-01 Marc Boucher <marc@mbsi.ca>
samdanbury 6:37b6d0d56190 33 * Ported to lwIP.
samdanbury 6:37b6d0d56190 34 * 97-12-08 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
samdanbury 6:37b6d0d56190 35 * Original based on BSD chap_ms.c.
samdanbury 6:37b6d0d56190 36 *****************************************************************************/
samdanbury 6:37b6d0d56190 37 /*
samdanbury 6:37b6d0d56190 38 * chap_ms.c - Microsoft MS-CHAP compatible implementation.
samdanbury 6:37b6d0d56190 39 *
samdanbury 6:37b6d0d56190 40 * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
samdanbury 6:37b6d0d56190 41 * http://www.strataware.com/
samdanbury 6:37b6d0d56190 42 *
samdanbury 6:37b6d0d56190 43 * All rights reserved.
samdanbury 6:37b6d0d56190 44 *
samdanbury 6:37b6d0d56190 45 * Redistribution and use in source and binary forms are permitted
samdanbury 6:37b6d0d56190 46 * provided that the above copyright notice and this paragraph are
samdanbury 6:37b6d0d56190 47 * duplicated in all such forms and that any documentation,
samdanbury 6:37b6d0d56190 48 * advertising materials, and other materials related to such
samdanbury 6:37b6d0d56190 49 * distribution and use acknowledge that the software was developed
samdanbury 6:37b6d0d56190 50 * by Eric Rosenquist. The name of the author may not be used to
samdanbury 6:37b6d0d56190 51 * endorse or promote products derived from this software without
samdanbury 6:37b6d0d56190 52 * specific prior written permission.
samdanbury 6:37b6d0d56190 53 *
samdanbury 6:37b6d0d56190 54 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
samdanbury 6:37b6d0d56190 55 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
samdanbury 6:37b6d0d56190 56 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
samdanbury 6:37b6d0d56190 57 */
samdanbury 6:37b6d0d56190 58
samdanbury 6:37b6d0d56190 59 /*
samdanbury 6:37b6d0d56190 60 * Modifications by Lauri Pesonen / lpesonen@clinet.fi, april 1997
samdanbury 6:37b6d0d56190 61 *
samdanbury 6:37b6d0d56190 62 * Implemented LANManager type password response to MS-CHAP challenges.
samdanbury 6:37b6d0d56190 63 * Now pppd provides both NT style and LANMan style blocks, and the
samdanbury 6:37b6d0d56190 64 * prefered is set by option "ms-lanman". Default is to use NT.
samdanbury 6:37b6d0d56190 65 * The hash text (StdText) was taken from Win95 RASAPI32.DLL.
samdanbury 6:37b6d0d56190 66 *
samdanbury 6:37b6d0d56190 67 * You should also use DOMAIN\\USERNAME as described in README.MSCHAP80
samdanbury 6:37b6d0d56190 68 */
samdanbury 6:37b6d0d56190 69
samdanbury 6:37b6d0d56190 70 #define USE_CRYPT
samdanbury 6:37b6d0d56190 71
samdanbury 6:37b6d0d56190 72 #include "lwip/opt.h"
samdanbury 6:37b6d0d56190 73
samdanbury 6:37b6d0d56190 74 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
samdanbury 6:37b6d0d56190 75
samdanbury 6:37b6d0d56190 76 #if MSCHAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
samdanbury 6:37b6d0d56190 77
samdanbury 6:37b6d0d56190 78 #include "ppp.h"
samdanbury 6:37b6d0d56190 79 #include "pppdebug.h"
samdanbury 6:37b6d0d56190 80
samdanbury 6:37b6d0d56190 81 #include "md4.h"
samdanbury 6:37b6d0d56190 82 #ifndef USE_CRYPT
samdanbury 6:37b6d0d56190 83 #include "des.h"
samdanbury 6:37b6d0d56190 84 #endif
samdanbury 6:37b6d0d56190 85 #include "chap.h"
samdanbury 6:37b6d0d56190 86 #include "chpms.h"
samdanbury 6:37b6d0d56190 87
samdanbury 6:37b6d0d56190 88 #include <string.h>
samdanbury 6:37b6d0d56190 89
samdanbury 6:37b6d0d56190 90
samdanbury 6:37b6d0d56190 91 /*************************/
samdanbury 6:37b6d0d56190 92 /*** LOCAL DEFINITIONS ***/
samdanbury 6:37b6d0d56190 93 /*************************/
samdanbury 6:37b6d0d56190 94
samdanbury 6:37b6d0d56190 95
samdanbury 6:37b6d0d56190 96 /************************/
samdanbury 6:37b6d0d56190 97 /*** LOCAL DATA TYPES ***/
samdanbury 6:37b6d0d56190 98 /************************/
samdanbury 6:37b6d0d56190 99 typedef struct {
samdanbury 6:37b6d0d56190 100 u_char LANManResp[24];
samdanbury 6:37b6d0d56190 101 u_char NTResp[24];
samdanbury 6:37b6d0d56190 102 u_char UseNT; /* If 1, ignore the LANMan response field */
samdanbury 6:37b6d0d56190 103 } MS_ChapResponse;
samdanbury 6:37b6d0d56190 104 /* We use MS_CHAP_RESPONSE_LEN, rather than sizeof(MS_ChapResponse),
samdanbury 6:37b6d0d56190 105 in case this struct gets padded. */
samdanbury 6:37b6d0d56190 106
samdanbury 6:37b6d0d56190 107
samdanbury 6:37b6d0d56190 108
samdanbury 6:37b6d0d56190 109 /***********************************/
samdanbury 6:37b6d0d56190 110 /*** LOCAL FUNCTION DECLARATIONS ***/
samdanbury 6:37b6d0d56190 111 /***********************************/
samdanbury 6:37b6d0d56190 112
samdanbury 6:37b6d0d56190 113 /* XXX Don't know what to do with these. */
samdanbury 6:37b6d0d56190 114 extern void setkey(const char *);
samdanbury 6:37b6d0d56190 115 extern void encrypt(char *, int);
samdanbury 6:37b6d0d56190 116
samdanbury 6:37b6d0d56190 117 static void DesEncrypt (u_char *, u_char *, u_char *);
samdanbury 6:37b6d0d56190 118 static void MakeKey (u_char *, u_char *);
samdanbury 6:37b6d0d56190 119
samdanbury 6:37b6d0d56190 120 #ifdef USE_CRYPT
samdanbury 6:37b6d0d56190 121 static void Expand (u_char *, u_char *);
samdanbury 6:37b6d0d56190 122 static void Collapse (u_char *, u_char *);
samdanbury 6:37b6d0d56190 123 #endif
samdanbury 6:37b6d0d56190 124
samdanbury 6:37b6d0d56190 125 static void ChallengeResponse(
samdanbury 6:37b6d0d56190 126 u_char *challenge, /* IN 8 octets */
samdanbury 6:37b6d0d56190 127 u_char *pwHash, /* IN 16 octets */
samdanbury 6:37b6d0d56190 128 u_char *response /* OUT 24 octets */
samdanbury 6:37b6d0d56190 129 );
samdanbury 6:37b6d0d56190 130 static void ChapMS_NT(
samdanbury 6:37b6d0d56190 131 char *rchallenge,
samdanbury 6:37b6d0d56190 132 int rchallenge_len,
samdanbury 6:37b6d0d56190 133 char *secret,
samdanbury 6:37b6d0d56190 134 int secret_len,
samdanbury 6:37b6d0d56190 135 MS_ChapResponse *response
samdanbury 6:37b6d0d56190 136 );
samdanbury 6:37b6d0d56190 137 static u_char Get7Bits(
samdanbury 6:37b6d0d56190 138 u_char *input,
samdanbury 6:37b6d0d56190 139 int startBit
samdanbury 6:37b6d0d56190 140 );
samdanbury 6:37b6d0d56190 141
samdanbury 6:37b6d0d56190 142 static void
samdanbury 6:37b6d0d56190 143 ChallengeResponse( u_char *challenge, /* IN 8 octets */
samdanbury 6:37b6d0d56190 144 u_char *pwHash, /* IN 16 octets */
samdanbury 6:37b6d0d56190 145 u_char *response /* OUT 24 octets */)
samdanbury 6:37b6d0d56190 146 {
samdanbury 6:37b6d0d56190 147 u_char ZPasswordHash[21];
samdanbury 6:37b6d0d56190 148
samdanbury 6:37b6d0d56190 149 BZERO(ZPasswordHash, sizeof(ZPasswordHash));
samdanbury 6:37b6d0d56190 150 BCOPY(pwHash, ZPasswordHash, 16);
samdanbury 6:37b6d0d56190 151
samdanbury 6:37b6d0d56190 152 #if 0
samdanbury 6:37b6d0d56190 153 log_packet(ZPasswordHash, sizeof(ZPasswordHash), "ChallengeResponse - ZPasswordHash", LOG_DEBUG);
samdanbury 6:37b6d0d56190 154 #endif
samdanbury 6:37b6d0d56190 155
samdanbury 6:37b6d0d56190 156 DesEncrypt(challenge, ZPasswordHash + 0, response + 0);
samdanbury 6:37b6d0d56190 157 DesEncrypt(challenge, ZPasswordHash + 7, response + 8);
samdanbury 6:37b6d0d56190 158 DesEncrypt(challenge, ZPasswordHash + 14, response + 16);
samdanbury 6:37b6d0d56190 159
samdanbury 6:37b6d0d56190 160 #if 0
samdanbury 6:37b6d0d56190 161 log_packet(response, 24, "ChallengeResponse - response", LOG_DEBUG);
samdanbury 6:37b6d0d56190 162 #endif
samdanbury 6:37b6d0d56190 163 }
samdanbury 6:37b6d0d56190 164
samdanbury 6:37b6d0d56190 165
samdanbury 6:37b6d0d56190 166 #ifdef USE_CRYPT
samdanbury 6:37b6d0d56190 167 static void
samdanbury 6:37b6d0d56190 168 DesEncrypt( u_char *clear, /* IN 8 octets */
samdanbury 6:37b6d0d56190 169 u_char *key, /* IN 7 octets */
samdanbury 6:37b6d0d56190 170 u_char *cipher /* OUT 8 octets */)
samdanbury 6:37b6d0d56190 171 {
samdanbury 6:37b6d0d56190 172 u_char des_key[8];
samdanbury 6:37b6d0d56190 173 u_char crypt_key[66];
samdanbury 6:37b6d0d56190 174 u_char des_input[66];
samdanbury 6:37b6d0d56190 175
samdanbury 6:37b6d0d56190 176 MakeKey(key, des_key);
samdanbury 6:37b6d0d56190 177
samdanbury 6:37b6d0d56190 178 Expand(des_key, crypt_key);
samdanbury 6:37b6d0d56190 179 setkey((char*)crypt_key);
samdanbury 6:37b6d0d56190 180
samdanbury 6:37b6d0d56190 181 #if 0
samdanbury 6:37b6d0d56190 182 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 183 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
samdanbury 6:37b6d0d56190 184 #endif
samdanbury 6:37b6d0d56190 185
samdanbury 6:37b6d0d56190 186 Expand(clear, des_input);
samdanbury 6:37b6d0d56190 187 encrypt((char*)des_input, 0);
samdanbury 6:37b6d0d56190 188 Collapse(des_input, cipher);
samdanbury 6:37b6d0d56190 189
samdanbury 6:37b6d0d56190 190 #if 0
samdanbury 6:37b6d0d56190 191 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 192 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
samdanbury 6:37b6d0d56190 193 #endif
samdanbury 6:37b6d0d56190 194 }
samdanbury 6:37b6d0d56190 195
samdanbury 6:37b6d0d56190 196 #else /* USE_CRYPT */
samdanbury 6:37b6d0d56190 197
samdanbury 6:37b6d0d56190 198 static void
samdanbury 6:37b6d0d56190 199 DesEncrypt( u_char *clear, /* IN 8 octets */
samdanbury 6:37b6d0d56190 200 u_char *key, /* IN 7 octets */
samdanbury 6:37b6d0d56190 201 u_char *cipher /* OUT 8 octets */)
samdanbury 6:37b6d0d56190 202 {
samdanbury 6:37b6d0d56190 203 des_cblock des_key;
samdanbury 6:37b6d0d56190 204 des_key_schedule key_schedule;
samdanbury 6:37b6d0d56190 205
samdanbury 6:37b6d0d56190 206 MakeKey(key, des_key);
samdanbury 6:37b6d0d56190 207
samdanbury 6:37b6d0d56190 208 des_set_key(&des_key, key_schedule);
samdanbury 6:37b6d0d56190 209
samdanbury 6:37b6d0d56190 210 #if 0
samdanbury 6:37b6d0d56190 211 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet input : %02X%02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 212 clear[0], clear[1], clear[2], clear[3], clear[4], clear[5], clear[6], clear[7]));
samdanbury 6:37b6d0d56190 213 #endif
samdanbury 6:37b6d0d56190 214
samdanbury 6:37b6d0d56190 215 des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher, key_schedule, 1);
samdanbury 6:37b6d0d56190 216
samdanbury 6:37b6d0d56190 217 #if 0
samdanbury 6:37b6d0d56190 218 CHAPDEBUG(LOG_INFO, ("DesEncrypt: 8 octet output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 219 cipher[0], cipher[1], cipher[2], cipher[3], cipher[4], cipher[5], cipher[6], cipher[7]));
samdanbury 6:37b6d0d56190 220 #endif
samdanbury 6:37b6d0d56190 221 }
samdanbury 6:37b6d0d56190 222
samdanbury 6:37b6d0d56190 223 #endif /* USE_CRYPT */
samdanbury 6:37b6d0d56190 224
samdanbury 6:37b6d0d56190 225
samdanbury 6:37b6d0d56190 226 static u_char
samdanbury 6:37b6d0d56190 227 Get7Bits( u_char *input, int startBit)
samdanbury 6:37b6d0d56190 228 {
samdanbury 6:37b6d0d56190 229 register unsigned int word;
samdanbury 6:37b6d0d56190 230
samdanbury 6:37b6d0d56190 231 word = (unsigned)input[startBit / 8] << 8;
samdanbury 6:37b6d0d56190 232 word |= (unsigned)input[startBit / 8 + 1];
samdanbury 6:37b6d0d56190 233
samdanbury 6:37b6d0d56190 234 word >>= 15 - (startBit % 8 + 7);
samdanbury 6:37b6d0d56190 235
samdanbury 6:37b6d0d56190 236 return word & 0xFE;
samdanbury 6:37b6d0d56190 237 }
samdanbury 6:37b6d0d56190 238
samdanbury 6:37b6d0d56190 239 #ifdef USE_CRYPT
samdanbury 6:37b6d0d56190 240
samdanbury 6:37b6d0d56190 241 /* in == 8-byte string (expanded version of the 56-bit key)
samdanbury 6:37b6d0d56190 242 * out == 64-byte string where each byte is either 1 or 0
samdanbury 6:37b6d0d56190 243 * Note that the low-order "bit" is always ignored by by setkey()
samdanbury 6:37b6d0d56190 244 */
samdanbury 6:37b6d0d56190 245 static void
samdanbury 6:37b6d0d56190 246 Expand(u_char *in, u_char *out)
samdanbury 6:37b6d0d56190 247 {
samdanbury 6:37b6d0d56190 248 int j, c;
samdanbury 6:37b6d0d56190 249 int i;
samdanbury 6:37b6d0d56190 250
samdanbury 6:37b6d0d56190 251 for(i = 0; i < 64; in++){
samdanbury 6:37b6d0d56190 252 c = *in;
samdanbury 6:37b6d0d56190 253 for(j = 7; j >= 0; j--) {
samdanbury 6:37b6d0d56190 254 *out++ = (c >> j) & 01;
samdanbury 6:37b6d0d56190 255 }
samdanbury 6:37b6d0d56190 256 i += 8;
samdanbury 6:37b6d0d56190 257 }
samdanbury 6:37b6d0d56190 258 }
samdanbury 6:37b6d0d56190 259
samdanbury 6:37b6d0d56190 260 /* The inverse of Expand
samdanbury 6:37b6d0d56190 261 */
samdanbury 6:37b6d0d56190 262 static void
samdanbury 6:37b6d0d56190 263 Collapse(u_char *in, u_char *out)
samdanbury 6:37b6d0d56190 264 {
samdanbury 6:37b6d0d56190 265 int j;
samdanbury 6:37b6d0d56190 266 int i;
samdanbury 6:37b6d0d56190 267 unsigned int c;
samdanbury 6:37b6d0d56190 268
samdanbury 6:37b6d0d56190 269 for (i = 0; i < 64; i += 8, out++) {
samdanbury 6:37b6d0d56190 270 c = 0;
samdanbury 6:37b6d0d56190 271 for (j = 7; j >= 0; j--, in++) {
samdanbury 6:37b6d0d56190 272 c |= *in << j;
samdanbury 6:37b6d0d56190 273 }
samdanbury 6:37b6d0d56190 274 *out = c & 0xff;
samdanbury 6:37b6d0d56190 275 }
samdanbury 6:37b6d0d56190 276 }
samdanbury 6:37b6d0d56190 277 #endif
samdanbury 6:37b6d0d56190 278
samdanbury 6:37b6d0d56190 279 static void
samdanbury 6:37b6d0d56190 280 MakeKey( u_char *key, /* IN 56 bit DES key missing parity bits */
samdanbury 6:37b6d0d56190 281 u_char *des_key /* OUT 64 bit DES key with parity bits added */)
samdanbury 6:37b6d0d56190 282 {
samdanbury 6:37b6d0d56190 283 des_key[0] = Get7Bits(key, 0);
samdanbury 6:37b6d0d56190 284 des_key[1] = Get7Bits(key, 7);
samdanbury 6:37b6d0d56190 285 des_key[2] = Get7Bits(key, 14);
samdanbury 6:37b6d0d56190 286 des_key[3] = Get7Bits(key, 21);
samdanbury 6:37b6d0d56190 287 des_key[4] = Get7Bits(key, 28);
samdanbury 6:37b6d0d56190 288 des_key[5] = Get7Bits(key, 35);
samdanbury 6:37b6d0d56190 289 des_key[6] = Get7Bits(key, 42);
samdanbury 6:37b6d0d56190 290 des_key[7] = Get7Bits(key, 49);
samdanbury 6:37b6d0d56190 291
samdanbury 6:37b6d0d56190 292 #ifndef USE_CRYPT
samdanbury 6:37b6d0d56190 293 des_set_odd_parity((des_cblock *)des_key);
samdanbury 6:37b6d0d56190 294 #endif
samdanbury 6:37b6d0d56190 295
samdanbury 6:37b6d0d56190 296 #if 0
samdanbury 6:37b6d0d56190 297 CHAPDEBUG(LOG_INFO, ("MakeKey: 56-bit input : %02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 298 key[0], key[1], key[2], key[3], key[4], key[5], key[6]));
samdanbury 6:37b6d0d56190 299 CHAPDEBUG(LOG_INFO, ("MakeKey: 64-bit output: %02X%02X%02X%02X%02X%02X%02X%02X\n",
samdanbury 6:37b6d0d56190 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]));
samdanbury 6:37b6d0d56190 301 #endif
samdanbury 6:37b6d0d56190 302 }
samdanbury 6:37b6d0d56190 303
samdanbury 6:37b6d0d56190 304 static void
samdanbury 6:37b6d0d56190 305 ChapMS_NT( char *rchallenge,
samdanbury 6:37b6d0d56190 306 int rchallenge_len,
samdanbury 6:37b6d0d56190 307 char *secret,
samdanbury 6:37b6d0d56190 308 int secret_len,
samdanbury 6:37b6d0d56190 309 MS_ChapResponse *response)
samdanbury 6:37b6d0d56190 310 {
samdanbury 6:37b6d0d56190 311 int i;
samdanbury 6:37b6d0d56190 312 MDstruct md4Context;
samdanbury 6:37b6d0d56190 313 u_char unicodePassword[MAX_NT_PASSWORD * 2];
samdanbury 6:37b6d0d56190 314 static int low_byte_first = -1;
samdanbury 6:37b6d0d56190 315
samdanbury 6:37b6d0d56190 316 LWIP_UNUSED_ARG(rchallenge_len);
samdanbury 6:37b6d0d56190 317
samdanbury 6:37b6d0d56190 318 /* Initialize the Unicode version of the secret (== password). */
samdanbury 6:37b6d0d56190 319 /* This implicitly supports 8-bit ISO8859/1 characters. */
samdanbury 6:37b6d0d56190 320 BZERO(unicodePassword, sizeof(unicodePassword));
samdanbury 6:37b6d0d56190 321 for (i = 0; i < secret_len; i++) {
samdanbury 6:37b6d0d56190 322 unicodePassword[i * 2] = (u_char)secret[i];
samdanbury 6:37b6d0d56190 323 }
samdanbury 6:37b6d0d56190 324 MDbegin(&md4Context);
samdanbury 6:37b6d0d56190 325 MDupdate(&md4Context, unicodePassword, secret_len * 2 * 8); /* Unicode is 2 bytes/char, *8 for bit count */
samdanbury 6:37b6d0d56190 326
samdanbury 6:37b6d0d56190 327 if (low_byte_first == -1) {
samdanbury 6:37b6d0d56190 328 low_byte_first = (PP_HTONS((unsigned short int)1) != 1);
samdanbury 6:37b6d0d56190 329 }
samdanbury 6:37b6d0d56190 330 if (low_byte_first == 0) {
samdanbury 6:37b6d0d56190 331 /* @todo: arg type - u_long* or u_int* ? */
samdanbury 6:37b6d0d56190 332 MDreverse((unsigned int*)&md4Context); /* sfb 961105 */
samdanbury 6:37b6d0d56190 333 }
samdanbury 6:37b6d0d56190 334
samdanbury 6:37b6d0d56190 335 MDupdate(&md4Context, NULL, 0); /* Tell MD4 we're done */
samdanbury 6:37b6d0d56190 336
samdanbury 6:37b6d0d56190 337 ChallengeResponse((u_char*)rchallenge, (u_char*)md4Context.buffer, response->NTResp);
samdanbury 6:37b6d0d56190 338 }
samdanbury 6:37b6d0d56190 339
samdanbury 6:37b6d0d56190 340 #ifdef MSLANMAN
samdanbury 6:37b6d0d56190 341 static u_char *StdText = (u_char *)"KGS!@#$%"; /* key from rasapi32.dll */
samdanbury 6:37b6d0d56190 342
samdanbury 6:37b6d0d56190 343 static void
samdanbury 6:37b6d0d56190 344 ChapMS_LANMan( char *rchallenge,
samdanbury 6:37b6d0d56190 345 int rchallenge_len,
samdanbury 6:37b6d0d56190 346 char *secret,
samdanbury 6:37b6d0d56190 347 int secret_len,
samdanbury 6:37b6d0d56190 348 MS_ChapResponse *response)
samdanbury 6:37b6d0d56190 349 {
samdanbury 6:37b6d0d56190 350 int i;
samdanbury 6:37b6d0d56190 351 u_char UcasePassword[MAX_NT_PASSWORD]; /* max is actually 14 */
samdanbury 6:37b6d0d56190 352 u_char PasswordHash[16];
samdanbury 6:37b6d0d56190 353
samdanbury 6:37b6d0d56190 354 /* LANMan password is case insensitive */
samdanbury 6:37b6d0d56190 355 BZERO(UcasePassword, sizeof(UcasePassword));
samdanbury 6:37b6d0d56190 356 for (i = 0; i < secret_len; i++) {
samdanbury 6:37b6d0d56190 357 UcasePassword[i] = (u_char)toupper(secret[i]);
samdanbury 6:37b6d0d56190 358 }
samdanbury 6:37b6d0d56190 359 DesEncrypt( StdText, UcasePassword + 0, PasswordHash + 0 );
samdanbury 6:37b6d0d56190 360 DesEncrypt( StdText, UcasePassword + 7, PasswordHash + 8 );
samdanbury 6:37b6d0d56190 361 ChallengeResponse(rchallenge, PasswordHash, response->LANManResp);
samdanbury 6:37b6d0d56190 362 }
samdanbury 6:37b6d0d56190 363 #endif
samdanbury 6:37b6d0d56190 364
samdanbury 6:37b6d0d56190 365 void
samdanbury 6:37b6d0d56190 366 ChapMS( chap_state *cstate, char *rchallenge, int rchallenge_len, char *secret, int secret_len)
samdanbury 6:37b6d0d56190 367 {
samdanbury 6:37b6d0d56190 368 MS_ChapResponse response;
samdanbury 6:37b6d0d56190 369 #ifdef MSLANMAN
samdanbury 6:37b6d0d56190 370 extern int ms_lanman;
samdanbury 6:37b6d0d56190 371 #endif
samdanbury 6:37b6d0d56190 372
samdanbury 6:37b6d0d56190 373 #if 0
samdanbury 6:37b6d0d56190 374 CHAPDEBUG(LOG_INFO, ("ChapMS: secret is '%.*s'\n", secret_len, secret));
samdanbury 6:37b6d0d56190 375 #endif
samdanbury 6:37b6d0d56190 376 BZERO(&response, sizeof(response));
samdanbury 6:37b6d0d56190 377
samdanbury 6:37b6d0d56190 378 /* Calculate both always */
samdanbury 6:37b6d0d56190 379 ChapMS_NT(rchallenge, rchallenge_len, secret, secret_len, &response);
samdanbury 6:37b6d0d56190 380
samdanbury 6:37b6d0d56190 381 #ifdef MSLANMAN
samdanbury 6:37b6d0d56190 382 ChapMS_LANMan(rchallenge, rchallenge_len, secret, secret_len, &response);
samdanbury 6:37b6d0d56190 383
samdanbury 6:37b6d0d56190 384 /* prefered method is set by option */
samdanbury 6:37b6d0d56190 385 response.UseNT = !ms_lanman;
samdanbury 6:37b6d0d56190 386 #else
samdanbury 6:37b6d0d56190 387 response.UseNT = 1;
samdanbury 6:37b6d0d56190 388 #endif
samdanbury 6:37b6d0d56190 389
samdanbury 6:37b6d0d56190 390 BCOPY(&response, cstate->response, MS_CHAP_RESPONSE_LEN);
samdanbury 6:37b6d0d56190 391 cstate->resp_length = MS_CHAP_RESPONSE_LEN;
samdanbury 6:37b6d0d56190 392 }
samdanbury 6:37b6d0d56190 393
samdanbury 6:37b6d0d56190 394 #endif /* MSCHAP_SUPPORT */
samdanbury 6:37b6d0d56190 395
samdanbury 6:37b6d0d56190 396 #endif /* PPP_SUPPORT */