release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/otus/80211core/ctkip.c

   1 /*
   2  * Copyright (c) 2007-2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 /*                                                                      */
  17 /*  Module Name : ctkip.c                                               */
  18 /*                                                                      */
  19 /*  Abstract                                                            */
  20 /*      This module contains Tx and Rx functions.                       */
  21 /*                                                                      */
  22 /*  NOTES                                                               */
  23 /*      None                                                            */
  24 /*                                                                      */
  25 /************************************************************************/
  26 #include "cprecomp.h"
  27
  28 u16_t zgTkipSboxLower[256] =
  29     {
  30         0xA5,0x84,0x99,0x8D,0x0D,0xBD,0xB1,0x54,
  31         0x50,0x03,0xA9,0x7D,0x19,0x62,0xE6,0x9A,
  32         0x45,0x9D,0x40,0x87,0x15,0xEB,0xC9,0x0B,
  33         0xEC,0x67,0xFD,0xEA,0xBF,0xF7,0x96,0x5B,
  34         0xC2,0x1C,0xAE,0x6A,0x5A,0x41,0x02,0x4F,
  35         0x5C,0xF4,0x34,0x08,0x93,0x73,0x53,0x3F,
  36         0x0C,0x52,0x65,0x5E,0x28,0xA1,0x0F,0xB5,
  37         0x09,0x36,0x9B,0x3D,0x26,0x69,0xCD,0x9F,
  38         0x1B,0x9E,0x74,0x2E,0x2D,0xB2,0xEE,0xFB,
  39         0xF6,0x4D,0x61,0xCE,0x7B,0x3E,0x71,0x97,
  40         0xF5,0x68,0x00,0x2C,0x60,0x1F,0xC8,0xED,
  41         0xBE,0x46,0xD9,0x4B,0xDE,0xD4,0xE8,0x4A,
  42         0x6B,0x2A,0xE5,0x16,0xC5,0xD7,0x55,0x94,
  43         0xCF,0x10,0x06,0x81,0xF0,0x44,0xBA,0xE3,
  44         0xF3,0xFE,0xC0,0x8A,0xAD,0xBC,0x48,0x04,
  45         0xDF,0xC1,0x75,0x63,0x30,0x1A,0x0E,0x6D,
  46         0x4C,0x14,0x35,0x2F,0xE1,0xA2,0xCC,0x39,
  47         0x57,0xF2,0x82,0x47,0xAC,0xE7,0x2B,0x95,
  48         0xA0,0x98,0xD1,0x7F,0x66,0x7E,0xAB,0x83,
  49         0xCA,0x29,0xD3,0x3C,0x79,0xE2,0x1D,0x76,
  50         0x3B,0x56,0x4E,0x1E,0xDB,0x0A,0x6C,0xE4,
  51         0x5D,0x6E,0xEF,0xA6,0xA8,0xA4,0x37,0x8B,
  52         0x32,0x43,0x59,0xB7,0x8C,0x64,0xD2,0xE0,
  53         0xB4,0xFA,0x07,0x25,0xAF,0x8E,0xE9,0x18,
  54         0xD5,0x88,0x6F,0x72,0x24,0xF1,0xC7,0x51,
  55         0x23,0x7C,0x9C,0x21,0xDD,0xDC,0x86,0x85,
  56         0x90,0x42,0xC4,0xAA,0xD8,0x05,0x01,0x12,
  57         0xA3,0x5F,0xF9,0xD0,0x91,0x58,0x27,0xB9,
  58         0x38,0x13,0xB3,0x33,0xBB,0x70,0x89,0xA7,
  59         0xB6,0x22,0x92,0x20,0x49,0xFF,0x78,0x7A,
  60         0x8F,0xF8,0x80,0x17,0xDA,0x31,0xC6,0xB8,
  61         0xC3,0xB0,0x77,0x11,0xCB,0xFC,0xD6,0x3A
  62     };
  63
  64
  65 u16_t zgTkipSboxUpper[256] =
  66     {
  67         0xC6,0xF8,0xEE,0xF6,0xFF,0xD6,0xDE,0x91,
  68         0x60,0x02,0xCE,0x56,0xE7,0xB5,0x4D,0xEC,
  69         0x8F,0x1F,0x89,0xFA,0xEF,0xB2,0x8E,0xFB,
  70         0x41,0xB3,0x5F,0x45,0x23,0x53,0xE4,0x9B,
  71         0x75,0xE1,0x3D,0x4C,0x6C,0x7E,0xF5,0x83,
  72         0x68,0x51,0xD1,0xF9,0xE2,0xAB,0x62,0x2A,
  73         0x08,0x95,0x46,0x9D,0x30,0x37,0x0A,0x2F,
  74         0x0E,0x24,0x1B,0xDF,0xCD,0x4E,0x7F,0xEA,
  75         0x12,0x1D,0x58,0x34,0x36,0xDC,0xB4,0x5B,
  76         0xA4,0x76,0xB7,0x7D,0x52,0xDD,0x5E,0x13,
  77         0xA6,0xB9,0x00,0xC1,0x40,0xE3,0x79,0xB6,
  78         0xD4,0x8D,0x67,0x72,0x94,0x98,0xB0,0x85,
  79         0xBB,0xC5,0x4F,0xED,0x86,0x9A,0x66,0x11,
  80         0x8A,0xE9,0x04,0xFE,0xA0,0x78,0x25,0x4B,
  81         0xA2,0x5D,0x80,0x05,0x3F,0x21,0x70,0xF1,
  82         0x63,0x77,0xAF,0x42,0x20,0xE5,0xFD,0xBF,
  83         0x81,0x18,0x26,0xC3,0xBE,0x35,0x88,0x2E,
  84         0x93,0x55,0xFC,0x7A,0xC8,0xBA,0x32,0xE6,
  85         0xC0,0x19,0x9E,0xA3,0x44,0x54,0x3B,0x0B,
  86         0x8C,0xC7,0x6B,0x28,0xA7,0xBC,0x16,0xAD,
  87         0xDB,0x64,0x74,0x14,0x92,0x0C,0x48,0xB8,
  88         0x9F,0xBD,0x43,0xC4,0x39,0x31,0xD3,0xF2,
  89         0xD5,0x8B,0x6E,0xDA,0x01,0xB1,0x9C,0x49,
  90         0xD8,0xAC,0xF3,0xCF,0xCA,0xF4,0x47,0x10,
  91         0x6F,0xF0,0x4A,0x5C,0x38,0x57,0x73,0x97,
  92         0xCB,0xA1,0xE8,0x3E,0x96,0x61,0x0D,0x0F,
  93         0xE0,0x7C,0x71,0xCC,0x90,0x06,0xF7,0x1C,
  94         0xC2,0x6A,0xAE,0x69,0x17,0x99,0x3A,0x27,
  95         0xD9,0xEB,0x2B,0x22,0xD2,0xA9,0x07,0x33,
  96         0x2D,0x3C,0x15,0xC9,0x87,0xAA,0x50,0xA5,
  97         0x03,0x59,0x09,0x1A,0x65,0xD7,0x84,0xD0,
  98         0x82,0x29,0x5A,0x1E,0x7B,0xA8,0x6D,0x2C
  99     };
 100
 101 u16_t zfrotr1(u16_t a)
 102 // rotate right by 1 bit.
 103 {
 104     u16_t b;
 105
 106     if (a & 0x01)
 107     {
 108         b = (a >> 1) | 0x8000;
 109     }
 110     else
 111     {
 112         b = (a >> 1) & 0x7fff;
 113     }
 114     return b;
 115 }
 116
 117 /*************************************************************/
 118 /* zfTkipSbox()                                              */
 119 /* Returns a 16 bit value from a 64K entry table. The Table  */
 120 /* is synthesized from two 256 entry byte wide tables.       */
 121 /*************************************************************/
 122 u16_t zfTkipSbox(u16_t index)
 123 {
 124     u16_t   low;
 125     u16_t   high;
 126     u16_t   left, right;
 127
 128     low = (index & 0xFF);
 129     high = ((index >> 8) & 0xFF);
 130
 131     left = zgTkipSboxLower[low] + (zgTkipSboxUpper[low] << 8 );
 132     right = zgTkipSboxUpper[high] + (zgTkipSboxLower[high] << 8 );
 133
 134     return (left ^ right);
 135 }
 136
 137 u8_t zfTkipPhase1KeyMix(u32_t iv32, struct zsTkipSeed* pSeed)
 138 {
 139     u16_t   tsc0;
 140     u16_t   tsc1;
 141     u16_t   i, j;
 142     tsc0 = (u16_t) ((iv32 >> 16) & 0xffff); /* msb */
 143     tsc1 = (u16_t) (iv32 & 0xffff);
 144
 145     /* Phase 1, step 1 */
 146     pSeed->ttak[0] = tsc1;
 147     pSeed->ttak[1] = tsc0;
 148     pSeed->ttak[2] = (u16_t) (pSeed->ta[0] + (pSeed->ta[1] <<8));
 149     pSeed->ttak[3] = (u16_t) (pSeed->ta[2] + (pSeed->ta[3] <<8));
 150     pSeed->ttak[4] = (u16_t) (pSeed->ta[4] + (pSeed->ta[5] <<8));
 151
 152     /* Phase 1, step 2 */
 153     for (i=0; i<8; i++)
 154     {
 155         j = 2*(i & 1);
 156         pSeed->ttak[0] =(pSeed->ttak[0] + zfTkipSbox(pSeed->ttak[4]
 157                          ^ ZM_BYTE_TO_WORD(pSeed->tk[1+j], pSeed->tk[j])))
 158                         & 0xffff;
 159         pSeed->ttak[1] =(pSeed->ttak[1] + zfTkipSbox(pSeed->ttak[0]
 160                          ^ ZM_BYTE_TO_WORD(pSeed->tk[5+j], pSeed->tk[4+j] )))
 161                         & 0xffff;
 162         pSeed->ttak[2] =(pSeed->ttak[2] + zfTkipSbox(pSeed->ttak[1]
 163                          ^ ZM_BYTE_TO_WORD(pSeed->tk[9+j], pSeed->tk[8+j] )))
 164                         & 0xffff;
 165         pSeed->ttak[3] =(pSeed->ttak[3] + zfTkipSbox(pSeed->ttak[2]
 166                          ^ ZM_BYTE_TO_WORD(pSeed->tk[13+j], pSeed->tk[12+j])))
 167                         & 0xffff;
 168         pSeed->ttak[4] =(pSeed->ttak[4] + zfTkipSbox(pSeed->ttak[3]
 169                          ^ ZM_BYTE_TO_WORD(pSeed->tk[1+j], pSeed->tk[j]  )))
 170                         & 0xffff;
 171         pSeed->ttak[4] =(pSeed->ttak[4] + i) & 0xffff;
 172     }
 173
 174     if ( iv32 == (pSeed->iv32+1) )
 175     {
 176         pSeed->iv32tmp = iv32;
 177         return 1;
 178     }
 179
 180     return 0;
 181 }
 182
 183 u8_t zfTkipPhase2KeyMix(u16_t iv16, struct zsTkipSeed* pSeed)
 184 {
 185     u16_t tsc2;
 186
 187     tsc2 = iv16;
 188
 189     /* Phase 2, Step 1 */
 190     pSeed->ppk[0] = pSeed->ttak[0];
 191     pSeed->ppk[1] = pSeed->ttak[1];
 192     pSeed->ppk[2] = pSeed->ttak[2];
 193     pSeed->ppk[3] = pSeed->ttak[3];
 194     pSeed->ppk[4] = pSeed->ttak[4];
 195     pSeed->ppk[5] = (pSeed->ttak[4] + tsc2) & 0xffff;
 196
 197     /* Phase2, Step 2 */
 198     pSeed->ppk[0] = pSeed->ppk[0]
 199                 + zfTkipSbox(pSeed->ppk[5] ^ ZM_BYTE_TO_WORD(pSeed->tk[1],pSeed->tk[0]));
 200     pSeed->ppk[1] = pSeed->ppk[1]
 201                 + zfTkipSbox(pSeed->ppk[0] ^ ZM_BYTE_TO_WORD(pSeed->tk[3],pSeed->tk[2]));
 202     pSeed->ppk[2] = pSeed->ppk[2]
 203                 + zfTkipSbox(pSeed->ppk[1] ^ ZM_BYTE_TO_WORD(pSeed->tk[5],pSeed->tk[4]));
 204     pSeed->ppk[3] = pSeed->ppk[3]
 205                 + zfTkipSbox(pSeed->ppk[2] ^ ZM_BYTE_TO_WORD(pSeed->tk[7],pSeed->tk[6]));
 206     pSeed->ppk[4] = pSeed->ppk[4]
 207                 + zfTkipSbox(pSeed->ppk[3] ^ ZM_BYTE_TO_WORD(pSeed->tk[9],pSeed->tk[8]));
 208     pSeed->ppk[5] = pSeed->ppk[5]
 209                 + zfTkipSbox(pSeed->ppk[4] ^ ZM_BYTE_TO_WORD(pSeed->tk[11],pSeed->tk[10]));
 210
 211     pSeed->ppk[0] = pSeed->ppk[0]
 212                 + zfrotr1(pSeed->ppk[5] ^ ZM_BYTE_TO_WORD(pSeed->tk[13],pSeed->tk[12]));
 213     pSeed->ppk[1] = pSeed->ppk[1]
 214                 + zfrotr1(pSeed->ppk[0] ^ ZM_BYTE_TO_WORD(pSeed->tk[15],pSeed->tk[14]));
 215     pSeed->ppk[2] = pSeed->ppk[2] + zfrotr1(pSeed->ppk[1]);
 216     pSeed->ppk[3] = pSeed->ppk[3] + zfrotr1(pSeed->ppk[2]);
 217     pSeed->ppk[4] = pSeed->ppk[4] + zfrotr1(pSeed->ppk[3]);
 218     pSeed->ppk[5] = pSeed->ppk[5] + zfrotr1(pSeed->ppk[4]);
 219
 220     if (iv16 == 0)
 221     {
 222         if (pSeed->iv16 == 0xffff)
 223         {
 224             pSeed->iv16tmp=0;
 225             return 1;
 226         }
 227         else
 228             return 0;
 229     }
 230     else if (iv16 == (pSeed->iv16+1))
 231     {
 232         pSeed->iv16tmp = iv16;
 233         return 1;
 234     }
 235     else
 236         return 0;
 237 }
 238
 239 void zfTkipInit(u8_t* key, u8_t* ta, struct zsTkipSeed* pSeed, u8_t* initIv)
 240 {
 241     u16_t  iv16;
 242     u32_t  iv32;
 243     u16_t  i;
 244
 245     /* clear memory */
 246     zfZeroMemory((u8_t*) pSeed, sizeof(struct zsTkipSeed));
 247     /* set key to seed */
 248     zfMemoryCopy(pSeed->ta, ta, 6);
 249     zfMemoryCopy(pSeed->tk, key, 16);
 250
 251     iv16 = *initIv;
 252     initIv++;
 253     iv16 += *initIv<<8;
 254     initIv++;
 255
 256     iv32=0;
 257
 258     for(i=0; i<4; i++)      // initiv is little endian
 259     {
 260         iv32 += *initIv<<(i*8);
 261         initIv++;
 262     }
 263
 264     pSeed->iv32 = iv32+1; // Force Recalculating on Tkip Phase1
 265     zfTkipPhase1KeyMix(iv32, pSeed);
 266
 267     pSeed->iv16 = iv16;
 268     pSeed->iv32 = iv32;
 269 }
 270
 271 u32_t zfGetU32t(u8_t* p)
 272 {
 273     u32_t res=0;
 274     u16_t i;
 275
 276     for( i=0; i<4; i++ )
 277     {
 278         res |= (*p++) << (8*i);
 279     }
 280
 281     return res;
 282
 283 }
 284
 285 void zfPutU32t(u8_t* p, u32_t value)
 286 {
 287     u16_t i;
 288
 289     for(i=0; i<4; i++)
 290     {
 291         *p++ = (u8_t) (value & 0xff);
 292         value >>= 8;
 293     }
 294 }
 295
 296 void zfMicClear(struct zsMicVar* pMic)
 297 {
 298     pMic->left = pMic->k0;
 299     pMic->right = pMic->k1;
 300     pMic->nBytes = 0;
 301     pMic->m = 0;
 302 }
 303
 304 void zfMicSetKey(u8_t* key, struct zsMicVar* pMic)
 305 {
 306     pMic->k0 = zfGetU32t(key);
 307     pMic->k1 = zfGetU32t(key+4);
 308     zfMicClear(pMic);
 309 }
 310
 311 void zfMicAppendByte(u8_t b, struct zsMicVar* pMic)
 312 {
 313     // Append the byte to our word-sized buffer
 314     pMic->m |= b << (8* pMic->nBytes);
 315     pMic->nBytes++;
 316
 317     // Process the word if it is full.
 318     if ( pMic->nBytes >= 4 )
 319     {
 320         pMic->left ^= pMic->m;
 321         pMic->right ^= ZM_ROL32(pMic->left, 17 );
 322         pMic->left += pMic->right;
 323         pMic->right ^= ((pMic->left & 0xff00ff00) >> 8) |
 324                        ((pMic->left & 0x00ff00ff) << 8);
 325         pMic->left += pMic->right;
 326         pMic->right ^= ZM_ROL32( pMic->left, 3 );
 327         pMic->left += pMic->right;
 328         pMic->right ^= ZM_ROR32( pMic->left, 2 );
 329         pMic->left += pMic->right;
 330         // Clear the buffer
 331         pMic->m = 0;
 332         pMic->nBytes = 0;
 333     }
 334 }
 335
 336 void zfMicGetMic(u8_t* dst, struct zsMicVar* pMic)
 337 {
 338     // Append the minimum padding
 339     zfMicAppendByte(0x5a, pMic);
 340     zfMicAppendByte(0, pMic);
 341     zfMicAppendByte(0, pMic);
 342     zfMicAppendByte(0, pMic);
 343     zfMicAppendByte(0, pMic);
 344
 345     // and then zeroes until the length is a multiple of 4
 346     while( pMic->nBytes != 0 )
 347     {
 348         zfMicAppendByte(0, pMic);
 349     }
 350
 351     // The appendByte function has already computed the result.
 352     zfPutU32t(dst, pMic->left);
 353     zfPutU32t(dst+4, pMic->right);
 354
 355     // Reset to the empty message.
 356     zfMicClear(pMic);
 357
 358 }
 359
 360 u8_t zfMicRxVerify(zdev_t* dev, zbuf_t* buf)
 361 {
 362     struct zsMicVar*  pMicKey;
 363     struct zsMicVar    MyMicKey;
 364     u8_t   mic[8];
 365     u8_t   da[6];
 366     u8_t   sa[6];
 367     u8_t   bValue;
 368     u16_t  i, payloadOffset, tailOffset;
 369
 370     zmw_get_wlan_dev(dev);
 371
 372     /* need not check MIC if pMicKEy is equal to NULL */
 373     if ( wd->wlanMode == ZM_MODE_AP )
 374     {
 375         pMicKey = zfApGetRxMicKey(dev, buf);
 376
 377         if ( pMicKey != NULL )
 378         {
 379             zfCopyFromRxBuffer(dev, buf, sa, ZM_WLAN_HEADER_A2_OFFSET, 6);
 380             zfCopyFromRxBuffer(dev, buf, da, ZM_WLAN_HEADER_A3_OFFSET, 6);
 381         }
 382         else
 383         {
 384             return ZM_MIC_SUCCESS;
 385         }
 386     }
 387     else if ( wd->wlanMode == ZM_MODE_INFRASTRUCTURE )
 388     {
 389         pMicKey = zfStaGetRxMicKey(dev, buf);
 390
 391         if ( pMicKey != NULL )
 392         {
 393             zfCopyFromRxBuffer(dev, buf, sa, ZM_WLAN_HEADER_A3_OFFSET, 6);
 394             zfCopyFromRxBuffer(dev, buf, da, ZM_WLAN_HEADER_A1_OFFSET, 6);
 395         }
 396         else
 397         {
 398             return ZM_MIC_SUCCESS;
 399         }
 400     }
 401     else
 402     {
 403         return ZM_MIC_SUCCESS;
 404     }
 405
 406     MyMicKey.k0=pMicKey->k0;
 407     MyMicKey.k1=pMicKey->k1;
 408     pMicKey = &MyMicKey;
 409
 410     zfMicClear(pMicKey);
 411     tailOffset = zfwBufGetSize(dev, buf);
 412     tailOffset -= 8;
 413
 414     /* append DA */
 415     for(i=0; i<6; i++)
 416     {
 417         zfMicAppendByte(da[i], pMicKey);
 418     }
 419     /* append SA */
 420     for(i=0; i<6; i++)
 421     {
 422         zfMicAppendByte(sa[i], pMicKey);
 423     }
 424
 425     /* append for alignment */
 426     if ((zmw_rx_buf_readb(dev, buf, 0) & 0x80) != 0)
 427         zfMicAppendByte(zmw_rx_buf_readb(dev, buf,24)&0x7, pMicKey);
 428     else
 429         zfMicAppendByte(0, pMicKey);
 430     zfMicAppendByte(0, pMicKey);
 431     zfMicAppendByte(0, pMicKey);
 432     zfMicAppendByte(0, pMicKey);
 433
 434     /* append payload */
 435     payloadOffset = ZM_SIZE_OF_WLAN_DATA_HEADER +
 436                     ZM_SIZE_OF_IV +
 437                     ZM_SIZE_OF_EXT_IV;
 438
 439     if ((zmw_rx_buf_readb(dev, buf, 0) & 0x80) != 0)
 440     {
 441         /* Qos Packet, Plcpheader + 2 */
 442         if (wd->wlanMode == ZM_MODE_AP)
 443         {
 444             /* TODO : Rx Qos element offset in software MIC check */
 445         }
 446         else if (wd->wlanMode == ZM_MODE_INFRASTRUCTURE)
 447         {
 448             if (wd->sta.wmeConnected != 0)
 449             {
 450                 payloadOffset += 2;
 451             }
 452         }
 453     }
 454
 455     for(i=payloadOffset; i<tailOffset; i++)
 456     {
 457         bValue = zmw_rx_buf_readb(dev, buf, i);
 458         zfMicAppendByte(bValue, pMicKey);
 459     }
 460
 461     zfMicGetMic(mic, pMicKey);
 462
 463     if ( !zfRxBufferEqualToStr(dev, buf, mic, tailOffset, 8) )
 464     {
 465         return ZM_MIC_FAILURE;
 466     }
 467
 468     return ZM_MIC_SUCCESS;
 469 }
 470
 471 void zfTkipGetseeds(u16_t iv16, u8_t *RC4Key, struct zsTkipSeed *Seed)
 472 {
 473     RC4Key[0]  = ZM_HI8(iv16);
 474     RC4Key[1]  = (ZM_HI8(iv16) | 0x20) & 0x7f;
 475     RC4Key[2]  = ZM_LO8(iv16);
 476     RC4Key[3]  = ((Seed->ppk[5] ^ ZM_BYTE_TO_WORD(Seed->tk[1],Seed->tk[0]))>>1) & 0xff;
 477     RC4Key[4]  = Seed->ppk[0] & 0xff;
 478     RC4Key[5]  = Seed->ppk[0] >> 8;
 479     RC4Key[6]  = Seed->ppk[1] & 0xff;
 480     RC4Key[7]  = Seed->ppk[1] >> 8;
 481     RC4Key[8]  = Seed->ppk[2] & 0xff;
 482     RC4Key[9]  = Seed->ppk[2] >> 8;
 483     RC4Key[10] = Seed->ppk[3] & 0xff;
 484     RC4Key[11] = Seed->ppk[3] >> 8;
 485     RC4Key[12] = Seed->ppk[4] & 0xff;
 486     RC4Key[13] = Seed->ppk[4] >> 8;
 487     RC4Key[14] = Seed->ppk[5] & 0xff;
 488     RC4Key[15] = Seed->ppk[5] >> 8;
 489 }
 490
 491 void zfCalTxMic(zdev_t *dev, zbuf_t *buf, u8_t *snap, u16_t snapLen, u16_t offset, u16_t *da, u16_t *sa, u8_t up, u8_t *mic)
 492 {
 493     struct zsMicVar*  pMicKey;
 494     u16_t  i;
 495     u16_t len;
 496     u8_t bValue;
 497     u8_t qosType;
 498     u8_t *pDa = (u8_t *)da;
 499     u8_t *pSa = (u8_t *)sa;
 500
 501     zmw_get_wlan_dev(dev);
 502
 503     /* need not check MIC if pMicKEy is equal to NULL */
 504     if ( wd->wlanMode == ZM_MODE_AP )
 505     {
 506         pMicKey = zfApGetTxMicKey(dev, buf, &qosType);
 507
 508         if ( pMicKey == NULL )
 509             return;
 510     }
 511     else if ( wd->wlanMode == ZM_MODE_INFRASTRUCTURE )
 512     {
 513         pMicKey = zfStaGetTxMicKey(dev, buf);
 514
 515         if ( pMicKey == NULL )
 516         {
 517             zm_debug_msg0("pMicKey is NULL");
 518             return;
 519         }
 520     }
 521     else
 522     {
 523         return;
 524     }
 525
 526     zfMicClear(pMicKey);
 527     len = zfwBufGetSize(dev, buf);
 528
 529     /* append DA */
 530     for(i = 0; i < 6; i++)
 531     {
 532         zfMicAppendByte(pDa[i], pMicKey);
 533     }
 534
 535     /* append SA */
 536     for(i = 0; i < 6; i++)
 537     {
 538         zfMicAppendByte(pSa[i], pMicKey);
 539     }
 540
 541     if (up != 0)
 542         zfMicAppendByte((up&0x7), pMicKey);
 543     else
 544         zfMicAppendByte(0, pMicKey);
 545
 546     zfMicAppendByte(0, pMicKey);
 547     zfMicAppendByte(0, pMicKey);
 548     zfMicAppendByte(0, pMicKey);
 549
 550     /* For Snap header */
 551     for(i = 0; i < snapLen; i++)
 552     {
 553         zfMicAppendByte(snap[i], pMicKey);
 554     }
 555
 556     for(i = offset; i < len; i++)
 557     {
 558         bValue = zmw_tx_buf_readb(dev, buf, i);
 559         zfMicAppendByte(bValue, pMicKey);
 560     }
 561
 562     zfMicGetMic(mic, pMicKey);
 563 }
 564
 565 void zfTKIPEncrypt(zdev_t *dev, zbuf_t *buf, u8_t *snap, u16_t snapLen, u16_t offset, u8_t keyLen, u8_t* key, u32_t* icv)
 566 {
 567     u8_t iv[3];
 568
 569     iv[0] = key[0];
 570     iv[1] = key[1];
 571     iv[2] = key[2];
 572
 573     keyLen -= 3;
 574
 575     zfWEPEncrypt(dev, buf, snap, snapLen, offset, keyLen, &key[3], iv);
 576 }
 577
 578 u16_t zfTKIPDecrypt(zdev_t *dev, zbuf_t *buf, u16_t offset, u8_t keyLen, u8_t* key)
 579 {
 580     u16_t ret = ZM_ICV_SUCCESS;
 581     u8_t iv[3];
 582
 583     iv[0] = key[0];
 584     iv[1] = key[1];
 585     iv[2] = key[2];
 586
 587     keyLen -= 3;
 588
 589     ret = zfWEPDecrypt(dev, buf, offset, keyLen, &key[3], iv);
 590
 591     return ret;
 592 }