dlls/secur32/util.c

   1 /*
   2  * Copyright 2006 Kai Blin
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  *
  18  * This file contains various helper functions needed for NTLM and maybe others
  19  */
  20 #include <stdarg.h>
  21 #include <stdio.h>
  22 #include "windef.h"
  23 #include "winbase.h"
  24 #include "winnls.h"
  25 #include "rpc.h"
  26 #include "sspi.h"
  27 #include "lm.h"
  28 #include "secur32_priv.h"
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(secur32);
  32
  33 /* The CRC32 code is copyright (C) 1986 Gary S. Brown and was placed in the
  34  * public domain.
  35  * CRC polynomial 0xedb88320
  36  */
  37 static const ULONG CRC_table[256] =
  38 {
  39     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
  40     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  41     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
  42     0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  43     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
  44     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  45     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
  46     0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  47     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
  48     0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  49     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
  50     0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  51     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
  52     0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  53     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
  54     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  55     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
  56     0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  57     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
  58     0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  59     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
  60     0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  61     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
  62     0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  63     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
  64     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  65     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
  66     0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  67     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
  68     0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  69     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
  70     0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  71     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
  72     0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  73     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
  74     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  75     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
  76     0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  77     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
  78     0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  79     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
  80     0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  81     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
  82 };
  83
  84 typedef struct
  85 {
  86     unsigned int buf[4];
  87     unsigned int i[2];
  88     unsigned char in[64];
  89     unsigned char digest[16];
  90 } MD4_CTX;
  91
  92 VOID WINAPI MD4Init( MD4_CTX *ctx );
  93 VOID WINAPI MD4Update( MD4_CTX *ctx, const unsigned char *buf, unsigned int len );
  94 VOID WINAPI MD4Final( MD4_CTX *ctx );
  95
  96 ULONG ComputeCrc32(const BYTE *pData, INT iLen)
  97 {
  98   ULONG crc = ~0U;
  99
 100   while (iLen > 0)
 101   {
 102     crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
 103     pData++;
 104     iLen--;
 105   }
 106   return ~crc;
 107 }
 108
 109 SECURITY_STATUS SECUR32_CreateNTLMv1SessionKey(PBYTE password, int len, PBYTE session_key)
 110 {
 111     MD4_CTX ctx;
 112     BYTE ntlm_hash[16];
 113
 114     TRACE("(%p, %p)\n", password, session_key);
 115
 116     MD4Init(&ctx);
 117     MD4Update(&ctx, (const unsigned char*) password, len);
 118     MD4Final(&ctx);
 119
 120     memcpy(ntlm_hash, ctx.digest, 0x10);
 121
 122     MD4Init(&ctx);
 123     MD4Update(&ctx, ntlm_hash, 0x10u);
 124     MD4Final(&ctx);
 125
 126     memcpy(session_key, ctx.digest, 0x10);
 127
 128     return SEC_E_OK;
 129 }
 130
 131 arc4_info *SECUR32_arc4Alloc(void)
 132 {
 133     arc4_info *a4i = HeapAlloc(GetProcessHeap(), 0, sizeof(arc4_info));
 134     return a4i;
 135 }
 136
 137 /*
 138  * The arc4 code is based on dlls/advapi32/crypt_arc4.c by Mike McCormack,
 139  * which in turn is based on public domain code by Wei Dai
 140  */
 141 void SECUR32_arc4Init(arc4_info *a4i, const BYTE *key, unsigned int keyLen)
 142 {
 143     unsigned int keyIndex = 0, stateIndex = 0;
 144     unsigned int i, a;
 145
 146     TRACE("(%p, %p, %d)\n", a4i, key, keyLen);
 147
 148         a4i->x = a4i->y = 0;
 149
 150     for (i=0; i<256; i++)
 151         a4i->state[i] = i;
 152
 153     for (i=0; i<256; i++)
 154     {
 155         a = a4i->state[i];
 156         stateIndex += key[keyIndex] + a;
 157         stateIndex &= 0xff;
 158         a4i->state[i] = a4i->state[stateIndex];
 159         a4i->state[stateIndex] = a;
 160         if (++keyIndex >= keyLen)
 161             keyIndex = 0;
 162     }
 163
 164 }
 165
 166 void SECUR32_arc4Process(arc4_info *a4i, BYTE *inoutString, unsigned int length)
 167 {
 168     BYTE *const s=a4i->state;
 169     unsigned int x = a4i->x;
 170     unsigned int y = a4i->y;
 171     unsigned int a, b;
 172
 173     while(length--)
 174     {
 175         x = (x+1) & 0xff;
 176         a = s[x];
 177         y = (y+a) & 0xff;
 178         b = s[y];
 179         s[x] = b;
 180         s[y] = a;
 181         *inoutString++ ^= s[(a+b) & 0xff];
 182     }
 183
 184     a4i->x = x;
 185     a4i->y = y;
 186 }
 187
 188 void SECUR32_arc4Cleanup(arc4_info *a4i)
 189 {
 190     HeapFree(GetProcessHeap(), 0, a4i);
 191 }