Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of version 2 of the GNU General Public License as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 14 | ******************************************************************************/ |
| 15 | #define _RTW_SECURITY_C_ |
| 16 | |
| 17 | #include <osdep_service.h> |
| 18 | #include <drv_types.h> |
| 19 | #include <wifi.h> |
| 20 | #include <osdep_intf.h> |
| 21 | |
| 22 | /* WEP related ===== */ |
| 23 | |
| 24 | #define CRC32_POLY 0x04c11db7 |
| 25 | |
| 26 | struct arc4context { |
| 27 | u32 x; |
| 28 | u32 y; |
| 29 | u8 state[256]; |
| 30 | }; |
| 31 | |
| 32 | static void arcfour_init(struct arc4context *parc4ctx, u8 *key, u32 key_len) |
| 33 | { |
| 34 | u32 t, u; |
| 35 | u32 keyindex; |
| 36 | u32 stateindex; |
| 37 | u8 *state; |
| 38 | u32 counter; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 39 | state = parc4ctx->state; |
| 40 | parc4ctx->x = 0; |
| 41 | parc4ctx->y = 0; |
| 42 | for (counter = 0; counter < 256; counter++) |
| 43 | state[counter] = (u8)counter; |
| 44 | keyindex = 0; |
| 45 | stateindex = 0; |
| 46 | for (counter = 0; counter < 256; counter++) { |
| 47 | t = state[counter]; |
| 48 | stateindex = (stateindex + key[keyindex] + t) & 0xff; |
| 49 | u = state[stateindex]; |
| 50 | state[stateindex] = (u8)t; |
| 51 | state[counter] = (u8)u; |
| 52 | if (++keyindex >= key_len) |
| 53 | keyindex = 0; |
| 54 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 55 | } |
| 56 | |
| 57 | static u32 arcfour_byte(struct arc4context *parc4ctx) |
| 58 | { |
| 59 | u32 x; |
| 60 | u32 y; |
| 61 | u32 sx, sy; |
| 62 | u8 *state; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 63 | state = parc4ctx->state; |
| 64 | x = (parc4ctx->x + 1) & 0xff; |
| 65 | sx = state[x]; |
| 66 | y = (sx + parc4ctx->y) & 0xff; |
| 67 | sy = state[y]; |
| 68 | parc4ctx->x = x; |
| 69 | parc4ctx->y = y; |
| 70 | state[y] = (u8)sx; |
| 71 | state[x] = (u8)sy; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 72 | return state[(sx + sy) & 0xff]; |
| 73 | } |
| 74 | |
| 75 | static void arcfour_encrypt(struct arc4context *parc4ctx, u8 *dest, u8 *src, u32 len) |
| 76 | { |
| 77 | u32 i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 78 | for (i = 0; i < len; i++) |
| 79 | dest[i] = src[i] ^ (unsigned char)arcfour_byte(parc4ctx); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | static int bcrc32initialized; |
| 83 | static u32 crc32_table[256]; |
| 84 | |
| 85 | static u8 crc32_reverseBit(u8 data) |
| 86 | { |
| 87 | return (u8)((data<<7)&0x80) | ((data<<5)&0x40) | ((data<<3)&0x20) | |
| 88 | ((data<<1)&0x10) | ((data>>1)&0x08) | ((data>>3)&0x04) | |
| 89 | ((data>>5)&0x02) | ((data>>7)&0x01); |
| 90 | } |
| 91 | |
| 92 | static void crc32_init(void) |
| 93 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 94 | if (bcrc32initialized == 1) { |
Larry Finger | f578b5d | 2014-02-09 15:15:59 -0600 | [diff] [blame] | 95 | return; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 96 | } else { |
| 97 | int i, j; |
| 98 | u32 c; |
| 99 | u8 *p = (u8 *)&c, *p1; |
| 100 | u8 k; |
| 101 | |
| 102 | c = 0x12340000; |
| 103 | |
| 104 | for (i = 0; i < 256; ++i) { |
| 105 | k = crc32_reverseBit((u8)i); |
| 106 | for (c = ((u32)k) << 24, j = 8; j > 0; --j) |
| 107 | c = c & 0x80000000 ? (c << 1) ^ CRC32_POLY : (c << 1); |
| 108 | p1 = (u8 *)&crc32_table[i]; |
| 109 | |
| 110 | p1[0] = crc32_reverseBit(p[3]); |
| 111 | p1[1] = crc32_reverseBit(p[2]); |
| 112 | p1[2] = crc32_reverseBit(p[1]); |
| 113 | p1[3] = crc32_reverseBit(p[0]); |
| 114 | } |
| 115 | bcrc32initialized = 1; |
| 116 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | static __le32 getcrc32(u8 *buf, int len) |
| 120 | { |
| 121 | u8 *p; |
| 122 | u32 crc; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 123 | if (bcrc32initialized == 0) |
| 124 | crc32_init(); |
| 125 | |
| 126 | crc = 0xffffffff; /* preload shift register, per CRC-32 spec */ |
| 127 | |
| 128 | for (p = buf; len > 0; ++p, --len) |
| 129 | crc = crc32_table[(crc ^ *p) & 0xff] ^ (crc >> 8); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 130 | return cpu_to_le32(~crc); /* transmit complement, per CRC-32 spec */ |
| 131 | } |
| 132 | |
| 133 | /* |
| 134 | Need to consider the fragment situation |
| 135 | */ |
| 136 | void rtw_wep_encrypt(struct adapter *padapter, u8 *pxmitframe) |
| 137 | { /* exclude ICV */ |
| 138 | |
| 139 | unsigned char crc[4]; |
| 140 | struct arc4context mycontext; |
| 141 | |
| 142 | int curfragnum, length; |
| 143 | u32 keylength; |
| 144 | |
| 145 | u8 *pframe, *payload, *iv; /* wepkey */ |
| 146 | u8 wepkey[16]; |
| 147 | u8 hw_hdr_offset = 0; |
| 148 | struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib; |
| 149 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 150 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; |
| 151 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 152 | |
| 153 | if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL) |
| 154 | return; |
| 155 | |
| 156 | hw_hdr_offset = TXDESC_SIZE + |
| 157 | (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ); |
| 158 | |
| 159 | pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset; |
| 160 | |
| 161 | /* start to encrypt each fragment */ |
| 162 | if ((pattrib->encrypt == _WEP40_) || (pattrib->encrypt == _WEP104_)) { |
| 163 | keylength = psecuritypriv->dot11DefKeylen[psecuritypriv->dot11PrivacyKeyIndex]; |
| 164 | |
| 165 | for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) { |
| 166 | iv = pframe+pattrib->hdrlen; |
| 167 | memcpy(&wepkey[0], iv, 3); |
| 168 | memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0], keylength); |
| 169 | payload = pframe+pattrib->iv_len+pattrib->hdrlen; |
| 170 | |
| 171 | if ((curfragnum+1) == pattrib->nr_frags) { /* the last fragment */ |
| 172 | length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
| 173 | |
| 174 | *((__le32 *)crc) = getcrc32(payload, length); |
| 175 | |
| 176 | arcfour_init(&mycontext, wepkey, 3+keylength); |
| 177 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 178 | arcfour_encrypt(&mycontext, payload+length, crc, 4); |
| 179 | } else { |
| 180 | length = pxmitpriv->frag_len-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
| 181 | *((__le32 *)crc) = getcrc32(payload, length); |
| 182 | arcfour_init(&mycontext, wepkey, 3+keylength); |
| 183 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 184 | arcfour_encrypt(&mycontext, payload+length, crc, 4); |
| 185 | |
| 186 | pframe += pxmitpriv->frag_len; |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 187 | pframe = (u8 *)round_up((size_t)(pframe), 4); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 188 | } |
| 189 | } |
| 190 | } |
| 191 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | void rtw_wep_decrypt(struct adapter *padapter, u8 *precvframe) |
| 195 | { |
| 196 | /* exclude ICV */ |
| 197 | u8 crc[4]; |
| 198 | struct arc4context mycontext; |
| 199 | int length; |
| 200 | u32 keylength; |
| 201 | u8 *pframe, *payload, *iv, wepkey[16]; |
| 202 | u8 keyindex; |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 203 | struct rx_pkt_attrib *prxattrib = &(((struct recv_frame *)precvframe)->attrib); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 204 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 205 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 206 | |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 207 | pframe = (unsigned char *)((struct recv_frame *)precvframe)->rx_data; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 208 | |
| 209 | /* start to decrypt recvframe */ |
| 210 | if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt == _WEP104_)) { |
| 211 | iv = pframe+prxattrib->hdrlen; |
| 212 | keyindex = prxattrib->key_index; |
| 213 | keylength = psecuritypriv->dot11DefKeylen[keyindex]; |
| 214 | memcpy(&wepkey[0], iv, 3); |
| 215 | memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].skey[0], keylength); |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 216 | length = ((struct recv_frame *)precvframe)->len-prxattrib->hdrlen-prxattrib->iv_len; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 217 | |
| 218 | payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; |
| 219 | |
| 220 | /* decrypt payload include icv */ |
| 221 | arcfour_init(&mycontext, wepkey, 3+keylength); |
| 222 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 223 | |
| 224 | /* calculate icv and compare the icv */ |
| 225 | *((__le32 *)crc) = getcrc32(payload, length - 4); |
| 226 | |
| 227 | if (crc[3] != payload[length-1] || |
| 228 | crc[2] != payload[length-2] || |
| 229 | crc[1] != payload[length-3] || |
| 230 | crc[0] != payload[length-4]) { |
| 231 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, |
| 232 | ("rtw_wep_decrypt:icv error crc (%4ph)!=payload (%4ph)\n", |
| 233 | &crc, &payload[length-4])); |
| 234 | } |
| 235 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 236 | return; |
| 237 | } |
| 238 | |
| 239 | /* 3 ===== TKIP related ===== */ |
| 240 | |
| 241 | static u32 secmicgetuint32(u8 *p) |
| 242 | /* Convert from Byte[] to Us3232 in a portable way */ |
| 243 | { |
| 244 | s32 i; |
| 245 | u32 res = 0; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 246 | for (i = 0; i < 4; i++) |
| 247 | res |= ((u32)(*p++)) << (8*i); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 248 | return res; |
| 249 | } |
| 250 | |
| 251 | static void secmicputuint32(u8 *p, u32 val) |
| 252 | /* Convert from Us3232 to Byte[] in a portable way */ |
| 253 | { |
| 254 | long i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 255 | for (i = 0; i < 4; i++) { |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 256 | *p++ = (u8)(val & 0xff); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 257 | val >>= 8; |
| 258 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | static void secmicclear(struct mic_data *pmicdata) |
| 262 | { |
| 263 | /* Reset the state to the empty message. */ |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 264 | pmicdata->L = pmicdata->K0; |
| 265 | pmicdata->R = pmicdata->K1; |
| 266 | pmicdata->nBytesInM = 0; |
| 267 | pmicdata->M = 0; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | void rtw_secmicsetkey(struct mic_data *pmicdata, u8 *key) |
| 271 | { |
| 272 | /* Set the key */ |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 273 | pmicdata->K0 = secmicgetuint32(key); |
| 274 | pmicdata->K1 = secmicgetuint32(key + 4); |
| 275 | /* and reset the message */ |
| 276 | secmicclear(pmicdata); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 277 | } |
| 278 | |
| 279 | void rtw_secmicappendbyte(struct mic_data *pmicdata, u8 b) |
| 280 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 281 | /* Append the byte to our word-sized buffer */ |
| 282 | pmicdata->M |= ((unsigned long)b) << (8*pmicdata->nBytesInM); |
| 283 | pmicdata->nBytesInM++; |
| 284 | /* Process the word if it is full. */ |
| 285 | if (pmicdata->nBytesInM >= 4) { |
| 286 | pmicdata->L ^= pmicdata->M; |
| 287 | pmicdata->R ^= ROL32(pmicdata->L, 17); |
| 288 | pmicdata->L += pmicdata->R; |
| 289 | pmicdata->R ^= ((pmicdata->L & 0xff00ff00) >> 8) | ((pmicdata->L & 0x00ff00ff) << 8); |
| 290 | pmicdata->L += pmicdata->R; |
| 291 | pmicdata->R ^= ROL32(pmicdata->L, 3); |
| 292 | pmicdata->L += pmicdata->R; |
| 293 | pmicdata->R ^= ROR32(pmicdata->L, 2); |
| 294 | pmicdata->L += pmicdata->R; |
| 295 | /* Clear the buffer */ |
| 296 | pmicdata->M = 0; |
| 297 | pmicdata->nBytesInM = 0; |
| 298 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | void rtw_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nbytes) |
| 302 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 303 | /* This is simple */ |
| 304 | while (nbytes > 0) { |
| 305 | rtw_secmicappendbyte(pmicdata, *src++); |
| 306 | nbytes--; |
| 307 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | void rtw_secgetmic(struct mic_data *pmicdata, u8 *dst) |
| 311 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 312 | /* Append the minimum padding */ |
| 313 | rtw_secmicappendbyte(pmicdata, 0x5a); |
| 314 | rtw_secmicappendbyte(pmicdata, 0); |
| 315 | rtw_secmicappendbyte(pmicdata, 0); |
| 316 | rtw_secmicappendbyte(pmicdata, 0); |
| 317 | rtw_secmicappendbyte(pmicdata, 0); |
| 318 | /* and then zeroes until the length is a multiple of 4 */ |
| 319 | while (pmicdata->nBytesInM != 0) |
| 320 | rtw_secmicappendbyte(pmicdata, 0); |
| 321 | /* The appendByte function has already computed the result. */ |
| 322 | secmicputuint32(dst, pmicdata->L); |
| 323 | secmicputuint32(dst+4, pmicdata->R); |
| 324 | /* Reset to the empty message. */ |
| 325 | secmicclear(pmicdata); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | void rtw_seccalctkipmic(u8 *key, u8 *header, u8 *data, u32 data_len, u8 *mic_code, u8 pri) |
| 329 | { |
| 330 | struct mic_data micdata; |
| 331 | u8 priority[4] = {0x0, 0x0, 0x0, 0x0}; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 332 | rtw_secmicsetkey(&micdata, key); |
| 333 | priority[0] = pri; |
| 334 | |
| 335 | /* Michael MIC pseudo header: DA, SA, 3 x 0, Priority */ |
| 336 | if (header[1]&1) { /* ToDS == 1 */ |
| 337 | rtw_secmicappend(&micdata, &header[16], 6); /* DA */ |
| 338 | if (header[1]&2) /* From Ds == 1 */ |
| 339 | rtw_secmicappend(&micdata, &header[24], 6); |
| 340 | else |
| 341 | rtw_secmicappend(&micdata, &header[10], 6); |
| 342 | } else { /* ToDS == 0 */ |
| 343 | rtw_secmicappend(&micdata, &header[4], 6); /* DA */ |
| 344 | if (header[1]&2) /* From Ds == 1 */ |
| 345 | rtw_secmicappend(&micdata, &header[16], 6); |
| 346 | else |
| 347 | rtw_secmicappend(&micdata, &header[10], 6); |
| 348 | } |
| 349 | rtw_secmicappend(&micdata, &priority[0], 4); |
| 350 | |
| 351 | rtw_secmicappend(&micdata, data, data_len); |
| 352 | |
| 353 | rtw_secgetmic(&micdata, mic_code); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | |
| 357 | |
| 358 | /* macros for extraction/creation of unsigned char/unsigned short values */ |
| 359 | #define RotR1(v16) ((((v16) >> 1) & 0x7FFF) ^ (((v16) & 1) << 15)) |
| 360 | #define Lo8(v16) ((u8)((v16) & 0x00FF)) |
| 361 | #define Hi8(v16) ((u8)(((v16) >> 8) & 0x00FF)) |
| 362 | #define Lo16(v32) ((u16)((v32) & 0xFFFF)) |
| 363 | #define Hi16(v32) ((u16)(((v32) >> 16) & 0xFFFF)) |
| 364 | #define Mk16(hi, lo) ((lo) ^ (((u16)(hi)) << 8)) |
| 365 | |
| 366 | /* select the Nth 16-bit word of the temporal key unsigned char array TK[] */ |
| 367 | #define TK16(N) Mk16(tk[2*(N)+1], tk[2*(N)]) |
| 368 | |
| 369 | /* S-box lookup: 16 bits --> 16 bits */ |
| 370 | #define _S_(v16) (Sbox1[0][Lo8(v16)] ^ Sbox1[1][Hi8(v16)]) |
| 371 | |
| 372 | /* fixed algorithm "parameters" */ |
| 373 | #define PHASE1_LOOP_CNT 8 /* this needs to be "big enough" */ |
| 374 | #define TA_SIZE 6 /* 48-bit transmitter address */ |
| 375 | #define TK_SIZE 16 /* 128-bit temporal key */ |
| 376 | #define P1K_SIZE 10 /* 80-bit Phase1 key */ |
| 377 | #define RC4_KEY_SIZE 16 /* 128-bit RC4KEY (104 bits unknown) */ |
| 378 | |
| 379 | /* 2-unsigned char by 2-unsigned char subset of the full AES S-box table */ |
| 380 | static const unsigned short Sbox1[2][256] = { /* Sbox for hash (can be in ROM) */ |
| 381 | { |
| 382 | 0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154, |
| 383 | 0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A, |
| 384 | 0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B, |
| 385 | 0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B, |
| 386 | 0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F, |
| 387 | 0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F, |
| 388 | 0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5, |
| 389 | 0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F, |
| 390 | 0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB, |
| 391 | 0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397, |
| 392 | 0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED, |
| 393 | 0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A, |
| 394 | 0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194, |
| 395 | 0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3, |
| 396 | 0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104, |
| 397 | 0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D, |
| 398 | 0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39, |
| 399 | 0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695, |
| 400 | 0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83, |
| 401 | 0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76, |
| 402 | 0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4, |
| 403 | 0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B, |
| 404 | 0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0, |
| 405 | 0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018, |
| 406 | 0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751, |
| 407 | 0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85, |
| 408 | 0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12, |
| 409 | 0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9, |
| 410 | 0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7, |
| 411 | 0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A, |
| 412 | 0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8, |
| 413 | 0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A, |
| 414 | }, |
| 415 | |
| 416 | { /* second half of table is unsigned char-reversed version of first! */ |
| 417 | 0xA5C6, 0x84F8, 0x99EE, 0x8DF6, 0x0DFF, 0xBDD6, 0xB1DE, 0x5491, |
| 418 | 0x5060, 0x0302, 0xA9CE, 0x7D56, 0x19E7, 0x62B5, 0xE64D, 0x9AEC, |
| 419 | 0x458F, 0x9D1F, 0x4089, 0x87FA, 0x15EF, 0xEBB2, 0xC98E, 0x0BFB, |
| 420 | 0xEC41, 0x67B3, 0xFD5F, 0xEA45, 0xBF23, 0xF753, 0x96E4, 0x5B9B, |
| 421 | 0xC275, 0x1CE1, 0xAE3D, 0x6A4C, 0x5A6C, 0x417E, 0x02F5, 0x4F83, |
| 422 | 0x5C68, 0xF451, 0x34D1, 0x08F9, 0x93E2, 0x73AB, 0x5362, 0x3F2A, |
| 423 | 0x0C08, 0x5295, 0x6546, 0x5E9D, 0x2830, 0xA137, 0x0F0A, 0xB52F, |
| 424 | 0x090E, 0x3624, 0x9B1B, 0x3DDF, 0x26CD, 0x694E, 0xCD7F, 0x9FEA, |
| 425 | 0x1B12, 0x9E1D, 0x7458, 0x2E34, 0x2D36, 0xB2DC, 0xEEB4, 0xFB5B, |
| 426 | 0xF6A4, 0x4D76, 0x61B7, 0xCE7D, 0x7B52, 0x3EDD, 0x715E, 0x9713, |
| 427 | 0xF5A6, 0x68B9, 0x0000, 0x2CC1, 0x6040, 0x1FE3, 0xC879, 0xEDB6, |
| 428 | 0xBED4, 0x468D, 0xD967, 0x4B72, 0xDE94, 0xD498, 0xE8B0, 0x4A85, |
| 429 | 0x6BBB, 0x2AC5, 0xE54F, 0x16ED, 0xC586, 0xD79A, 0x5566, 0x9411, |
| 430 | 0xCF8A, 0x10E9, 0x0604, 0x81FE, 0xF0A0, 0x4478, 0xBA25, 0xE34B, |
| 431 | 0xF3A2, 0xFE5D, 0xC080, 0x8A05, 0xAD3F, 0xBC21, 0x4870, 0x04F1, |
| 432 | 0xDF63, 0xC177, 0x75AF, 0x6342, 0x3020, 0x1AE5, 0x0EFD, 0x6DBF, |
| 433 | 0x4C81, 0x1418, 0x3526, 0x2FC3, 0xE1BE, 0xA235, 0xCC88, 0x392E, |
| 434 | 0x5793, 0xF255, 0x82FC, 0x477A, 0xACC8, 0xE7BA, 0x2B32, 0x95E6, |
| 435 | 0xA0C0, 0x9819, 0xD19E, 0x7FA3, 0x6644, 0x7E54, 0xAB3B, 0x830B, |
| 436 | 0xCA8C, 0x29C7, 0xD36B, 0x3C28, 0x79A7, 0xE2BC, 0x1D16, 0x76AD, |
| 437 | 0x3BDB, 0x5664, 0x4E74, 0x1E14, 0xDB92, 0x0A0C, 0x6C48, 0xE4B8, |
| 438 | 0x5D9F, 0x6EBD, 0xEF43, 0xA6C4, 0xA839, 0xA431, 0x37D3, 0x8BF2, |
| 439 | 0x32D5, 0x438B, 0x596E, 0xB7DA, 0x8C01, 0x64B1, 0xD29C, 0xE049, |
| 440 | 0xB4D8, 0xFAAC, 0x07F3, 0x25CF, 0xAFCA, 0x8EF4, 0xE947, 0x1810, |
| 441 | 0xD56F, 0x88F0, 0x6F4A, 0x725C, 0x2438, 0xF157, 0xC773, 0x5197, |
| 442 | 0x23CB, 0x7CA1, 0x9CE8, 0x213E, 0xDD96, 0xDC61, 0x860D, 0x850F, |
| 443 | 0x90E0, 0x427C, 0xC471, 0xAACC, 0xD890, 0x0506, 0x01F7, 0x121C, |
| 444 | 0xA3C2, 0x5F6A, 0xF9AE, 0xD069, 0x9117, 0x5899, 0x273A, 0xB927, |
| 445 | 0x38D9, 0x13EB, 0xB32B, 0x3322, 0xBBD2, 0x70A9, 0x8907, 0xA733, |
| 446 | 0xB62D, 0x223C, 0x9215, 0x20C9, 0x4987, 0xFFAA, 0x7850, 0x7AA5, |
| 447 | 0x8F03, 0xF859, 0x8009, 0x171A, 0xDA65, 0x31D7, 0xC684, 0xB8D0, |
| 448 | 0xC382, 0xB029, 0x775A, 0x111E, 0xCB7B, 0xFCA8, 0xD66D, 0x3A2C, |
| 449 | } |
| 450 | }; |
| 451 | |
| 452 | /* |
| 453 | ********************************************************************** |
| 454 | * Routine: Phase 1 -- generate P1K, given TA, TK, IV32 |
| 455 | * |
| 456 | * Inputs: |
| 457 | * tk[] = temporal key [128 bits] |
| 458 | * ta[] = transmitter's MAC address [ 48 bits] |
| 459 | * iv32 = upper 32 bits of IV [ 32 bits] |
| 460 | * Output: |
| 461 | * p1k[] = Phase 1 key [ 80 bits] |
| 462 | * |
| 463 | * Note: |
| 464 | * This function only needs to be called every 2**16 packets, |
| 465 | * although in theory it could be called every packet. |
| 466 | * |
| 467 | ********************************************************************** |
| 468 | */ |
| 469 | static void phase1(u16 *p1k, const u8 *tk, const u8 *ta, u32 iv32) |
| 470 | { |
| 471 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 472 | /* Initialize the 80 bits of P1K[] from IV32 and TA[0..5] */ |
| 473 | p1k[0] = Lo16(iv32); |
| 474 | p1k[1] = Hi16(iv32); |
| 475 | p1k[2] = Mk16(ta[1], ta[0]); /* use TA[] as little-endian */ |
| 476 | p1k[3] = Mk16(ta[3], ta[2]); |
| 477 | p1k[4] = Mk16(ta[5], ta[4]); |
| 478 | |
| 479 | /* Now compute an unbalanced Feistel cipher with 80-bit block */ |
| 480 | /* size on the 80-bit block P1K[], using the 128-bit key TK[] */ |
| 481 | for (i = 0; i < PHASE1_LOOP_CNT; i++) { /* Each add operation here is mod 2**16 */ |
| 482 | p1k[0] += _S_(p1k[4] ^ TK16((i&1)+0)); |
| 483 | p1k[1] += _S_(p1k[0] ^ TK16((i&1)+2)); |
| 484 | p1k[2] += _S_(p1k[1] ^ TK16((i&1)+4)); |
| 485 | p1k[3] += _S_(p1k[2] ^ TK16((i&1)+6)); |
| 486 | p1k[4] += _S_(p1k[3] ^ TK16((i&1)+0)); |
| 487 | p1k[4] += (unsigned short)i; /* avoid "slide attacks" */ |
| 488 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | /* |
| 492 | ********************************************************************** |
| 493 | * Routine: Phase 2 -- generate RC4KEY, given TK, P1K, IV16 |
| 494 | * |
| 495 | * Inputs: |
| 496 | * tk[] = Temporal key [128 bits] |
| 497 | * p1k[] = Phase 1 output key [ 80 bits] |
| 498 | * iv16 = low 16 bits of IV counter [ 16 bits] |
| 499 | * Output: |
| 500 | * rc4key[] = the key used to encrypt the packet [128 bits] |
| 501 | * |
| 502 | * Note: |
| 503 | * The value {TA, IV32, IV16} for Phase1/Phase2 must be unique |
| 504 | * across all packets using the same key TK value. Then, for a |
| 505 | * given value of TK[], this TKIP48 construction guarantees that |
| 506 | * the final RC4KEY value is unique across all packets. |
| 507 | * |
| 508 | * Suggested implementation optimization: if PPK[] is "overlaid" |
| 509 | * appropriately on RC4KEY[], there is no need for the final |
| 510 | * for loop below that copies the PPK[] result into RC4KEY[]. |
| 511 | * |
| 512 | ********************************************************************** |
| 513 | */ |
| 514 | static void phase2(u8 *rc4key, const u8 *tk, const u16 *p1k, u16 iv16) |
| 515 | { |
| 516 | int i; |
| 517 | u16 PPK[6]; /* temporary key for mixing */ |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 518 | /* Note: all adds in the PPK[] equations below are mod 2**16 */ |
| 519 | for (i = 0; i < 5; i++) |
| 520 | PPK[i] = p1k[i]; /* first, copy P1K to PPK */ |
| 521 | PPK[5] = p1k[4] + iv16; /* next, add in IV16 */ |
| 522 | |
| 523 | /* Bijective non-linear mixing of the 96 bits of PPK[0..5] */ |
| 524 | PPK[0] += _S_(PPK[5] ^ TK16(0)); /* Mix key in each "round" */ |
| 525 | PPK[1] += _S_(PPK[0] ^ TK16(1)); |
| 526 | PPK[2] += _S_(PPK[1] ^ TK16(2)); |
| 527 | PPK[3] += _S_(PPK[2] ^ TK16(3)); |
| 528 | PPK[4] += _S_(PPK[3] ^ TK16(4)); |
| 529 | PPK[5] += _S_(PPK[4] ^ TK16(5)); /* Total # S-box lookups == 6 */ |
| 530 | |
| 531 | /* Final sweep: bijective, "linear". Rotates kill LSB correlations */ |
| 532 | PPK[0] += RotR1(PPK[5] ^ TK16(6)); |
| 533 | PPK[1] += RotR1(PPK[0] ^ TK16(7)); /* Use all of TK[] in Phase2 */ |
| 534 | PPK[2] += RotR1(PPK[1]); |
| 535 | PPK[3] += RotR1(PPK[2]); |
| 536 | PPK[4] += RotR1(PPK[3]); |
| 537 | PPK[5] += RotR1(PPK[4]); |
| 538 | /* Note: At this point, for a given key TK[0..15], the 96-bit output */ |
| 539 | /* value PPK[0..5] is guaranteed to be unique, as a function */ |
| 540 | /* of the 96-bit "input" value {TA, IV32, IV16}. That is, P1K */ |
| 541 | /* is now a keyed permutation of {TA, IV32, IV16}. */ |
| 542 | |
| 543 | /* Set RC4KEY[0..3], which includes "cleartext" portion of RC4 key */ |
| 544 | rc4key[0] = Hi8(iv16); /* RC4KEY[0..2] is the WEP IV */ |
| 545 | rc4key[1] = (Hi8(iv16) | 0x20) & 0x7F; /* Help avoid weak (FMS) keys */ |
| 546 | rc4key[2] = Lo8(iv16); |
| 547 | rc4key[3] = Lo8((PPK[5] ^ TK16(0)) >> 1); |
| 548 | |
| 549 | /* Copy 96 bits of PPK[0..5] to RC4KEY[4..15] (little-endian) */ |
| 550 | for (i = 0; i < 6; i++) { |
| 551 | rc4key[4+2*i] = Lo8(PPK[i]); |
| 552 | rc4key[5+2*i] = Hi8(PPK[i]); |
| 553 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 554 | } |
| 555 | |
| 556 | /* The hlen isn't include the IV */ |
| 557 | u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe) |
| 558 | { /* exclude ICV */ |
| 559 | u16 pnl; |
| 560 | u32 pnh; |
| 561 | u8 rc4key[16]; |
| 562 | u8 ttkey[16]; |
| 563 | u8 crc[4]; |
| 564 | u8 hw_hdr_offset = 0; |
| 565 | struct arc4context mycontext; |
| 566 | int curfragnum, length; |
| 567 | |
| 568 | u8 *pframe, *payload, *iv, *prwskey; |
| 569 | union pn48 dot11txpn; |
| 570 | struct sta_info *stainfo; |
| 571 | struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib; |
| 572 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 573 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; |
| 574 | u32 res = _SUCCESS; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 575 | |
| 576 | if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL) |
| 577 | return _FAIL; |
| 578 | |
| 579 | hw_hdr_offset = TXDESC_SIZE + |
| 580 | (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ); |
| 581 | pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset; |
| 582 | /* 4 start to encrypt each fragment */ |
| 583 | if (pattrib->encrypt == _TKIP_) { |
| 584 | if (pattrib->psta) |
| 585 | stainfo = pattrib->psta; |
| 586 | else |
| 587 | stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]); |
| 588 | |
| 589 | if (stainfo != NULL) { |
| 590 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_tkip_encrypt: stainfo!= NULL!!!\n")); |
| 591 | |
| 592 | if (IS_MCAST(pattrib->ra)) |
| 593 | prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey; |
| 594 | else |
| 595 | prwskey = &stainfo->dot118021x_UncstKey.skey[0]; |
| 596 | |
| 597 | for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) { |
| 598 | iv = pframe+pattrib->hdrlen; |
| 599 | payload = pframe+pattrib->iv_len+pattrib->hdrlen; |
| 600 | |
| 601 | GET_TKIP_PN(iv, dot11txpn); |
| 602 | |
| 603 | pnl = (u16)(dot11txpn.val); |
| 604 | pnh = (u32)(dot11txpn.val>>16); |
| 605 | phase1((u16 *)&ttkey[0], prwskey, &pattrib->ta[0], pnh); |
| 606 | phase2(&rc4key[0], prwskey, (u16 *)&ttkey[0], pnl); |
| 607 | |
| 608 | if ((curfragnum+1) == pattrib->nr_frags) { /* 4 the last fragment */ |
| 609 | length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
| 610 | RT_TRACE(_module_rtl871x_security_c_, _drv_info_, |
| 611 | ("pattrib->iv_len=%x, pattrib->icv_len=%x\n", |
| 612 | pattrib->iv_len, pattrib->icv_len)); |
| 613 | *((__le32 *)crc) = getcrc32(payload, length);/* modified by Amy*/ |
| 614 | |
| 615 | arcfour_init(&mycontext, rc4key, 16); |
| 616 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 617 | arcfour_encrypt(&mycontext, payload+length, crc, 4); |
| 618 | } else { |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 619 | length = pxmitpriv->frag_len-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 620 | *((__le32 *)crc) = getcrc32(payload, length);/* modified by Amy*/ |
| 621 | arcfour_init(&mycontext, rc4key, 16); |
| 622 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 623 | arcfour_encrypt(&mycontext, payload+length, crc, 4); |
| 624 | |
| 625 | pframe += pxmitpriv->frag_len; |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 626 | pframe = (u8 *)round_up((size_t)(pframe), 4); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 627 | } |
| 628 | } |
| 629 | } else { |
| 630 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_tkip_encrypt: stainfo==NULL!!!\n")); |
| 631 | res = _FAIL; |
| 632 | } |
| 633 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 634 | return res; |
| 635 | } |
| 636 | |
| 637 | /* The hlen isn't include the IV */ |
| 638 | u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe) |
| 639 | { /* exclude ICV */ |
| 640 | u16 pnl; |
| 641 | u32 pnh; |
| 642 | u8 rc4key[16]; |
| 643 | u8 ttkey[16]; |
| 644 | u8 crc[4]; |
| 645 | struct arc4context mycontext; |
| 646 | int length; |
| 647 | |
| 648 | u8 *pframe, *payload, *iv, *prwskey; |
| 649 | union pn48 dot11txpn; |
| 650 | struct sta_info *stainfo; |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 651 | struct rx_pkt_attrib *prxattrib = &((struct recv_frame *)precvframe)->attrib; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 652 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 653 | u32 res = _SUCCESS; |
| 654 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 655 | |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 656 | pframe = (unsigned char *)((struct recv_frame *)precvframe)->rx_data; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 657 | |
| 658 | /* 4 start to decrypt recvframe */ |
| 659 | if (prxattrib->encrypt == _TKIP_) { |
| 660 | stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]); |
| 661 | if (stainfo != NULL) { |
| 662 | if (IS_MCAST(prxattrib->ra)) { |
| 663 | if (!psecuritypriv->binstallGrpkey) { |
| 664 | res = _FAIL; |
| 665 | DBG_88E("%s:rx bc/mc packets, but didn't install group key!!!!!!!!!!\n", __func__); |
| 666 | goto exit; |
| 667 | } |
| 668 | prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey; |
| 669 | } else { |
| 670 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_tkip_decrypt: stainfo!= NULL!!!\n")); |
| 671 | prwskey = &stainfo->dot118021x_UncstKey.skey[0]; |
| 672 | } |
| 673 | |
| 674 | iv = pframe+prxattrib->hdrlen; |
| 675 | payload = pframe+prxattrib->iv_len+prxattrib->hdrlen; |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 676 | length = ((struct recv_frame *)precvframe)->len-prxattrib->hdrlen-prxattrib->iv_len; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 677 | |
| 678 | GET_TKIP_PN(iv, dot11txpn); |
| 679 | |
| 680 | pnl = (u16)(dot11txpn.val); |
| 681 | pnh = (u32)(dot11txpn.val>>16); |
| 682 | |
| 683 | phase1((u16 *)&ttkey[0], prwskey, &prxattrib->ta[0], pnh); |
| 684 | phase2(&rc4key[0], prwskey, (unsigned short *)&ttkey[0], pnl); |
| 685 | |
| 686 | /* 4 decrypt payload include icv */ |
| 687 | |
| 688 | arcfour_init(&mycontext, rc4key, 16); |
| 689 | arcfour_encrypt(&mycontext, payload, payload, length); |
| 690 | |
| 691 | *((__le32 *)crc) = getcrc32(payload, length-4); |
| 692 | |
| 693 | if (crc[3] != payload[length-1] || |
| 694 | crc[2] != payload[length-2] || |
| 695 | crc[1] != payload[length-3] || |
| 696 | crc[0] != payload[length-4]) { |
| 697 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, |
| 698 | ("rtw_wep_decrypt:icv error crc (%4ph)!=payload (%4ph)\n", |
| 699 | &crc, &payload[length-4])); |
| 700 | res = _FAIL; |
| 701 | } |
| 702 | } else { |
| 703 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_tkip_decrypt: stainfo==NULL!!!\n")); |
| 704 | res = _FAIL; |
| 705 | } |
| 706 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 707 | exit: |
| 708 | return res; |
| 709 | } |
| 710 | |
| 711 | /* 3 ===== AES related ===== */ |
| 712 | |
| 713 | |
| 714 | #define MAX_MSG_SIZE 2048 |
| 715 | /*****************************/ |
| 716 | /******** SBOX Table *********/ |
| 717 | /*****************************/ |
| 718 | |
| 719 | static u8 sbox_table[256] = { |
| 720 | 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, |
| 721 | 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, |
| 722 | 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, |
| 723 | 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, |
| 724 | 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, |
| 725 | 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, |
| 726 | 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, |
| 727 | 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, |
| 728 | 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, |
| 729 | 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, |
| 730 | 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, |
| 731 | 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, |
| 732 | 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, |
| 733 | 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, |
| 734 | 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, |
| 735 | 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, |
| 736 | 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, |
| 737 | 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, |
| 738 | 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, |
| 739 | 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, |
| 740 | 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, |
| 741 | 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, |
| 742 | 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, |
| 743 | 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, |
| 744 | 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, |
| 745 | 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, |
| 746 | 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, |
| 747 | 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, |
| 748 | 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, |
| 749 | 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, |
| 750 | 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, |
| 751 | 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 |
| 752 | }; |
| 753 | |
| 754 | /*****************************/ |
| 755 | /**** Function Prototypes ****/ |
| 756 | /*****************************/ |
| 757 | |
| 758 | static void bitwise_xor(u8 *ina, u8 *inb, u8 *out); |
| 759 | static void construct_mic_iv(u8 *mic_header1, int qc_exists, int a4_exists, u8 *mpdu, uint payload_length, u8 *pn_vector); |
| 760 | static void construct_mic_header1(u8 *mic_header1, int header_length, u8 *mpdu); |
| 761 | static void construct_mic_header2(u8 *mic_header2, u8 *mpdu, int a4_exists, int qc_exists); |
| 762 | static void construct_ctr_preload(u8 *ctr_preload, int a4_exists, int qc_exists, u8 *mpdu, u8 *pn_vector, int c); |
| 763 | static void xor_128(u8 *a, u8 *b, u8 *out); |
| 764 | static void xor_32(u8 *a, u8 *b, u8 *out); |
| 765 | static u8 sbox(u8 a); |
| 766 | static void next_key(u8 *key, int round); |
| 767 | static void byte_sub(u8 *in, u8 *out); |
| 768 | static void shift_row(u8 *in, u8 *out); |
| 769 | static void mix_column(u8 *in, u8 *out); |
| 770 | static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext); |
| 771 | |
| 772 | /****************************************/ |
| 773 | /* aes128k128d() */ |
| 774 | /* Performs a 128 bit AES encrypt with */ |
| 775 | /* 128 bit data. */ |
| 776 | /****************************************/ |
| 777 | static void xor_128(u8 *a, u8 *b, u8 *out) |
| 778 | { |
| 779 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 780 | for (i = 0; i < 16; i++) |
| 781 | out[i] = a[i] ^ b[i]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | static void xor_32(u8 *a, u8 *b, u8 *out) |
| 785 | { |
| 786 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 787 | for (i = 0; i < 4; i++) |
| 788 | out[i] = a[i] ^ b[i]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | static u8 sbox(u8 a) |
| 792 | { |
| 793 | return sbox_table[(int)a]; |
| 794 | } |
| 795 | |
| 796 | static void next_key(u8 *key, int round) |
| 797 | { |
| 798 | u8 rcon; |
| 799 | u8 sbox_key[4]; |
| 800 | u8 rcon_table[12] = { |
| 801 | 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, |
| 802 | 0x1b, 0x36, 0x36, 0x36 |
| 803 | }; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 804 | sbox_key[0] = sbox(key[13]); |
| 805 | sbox_key[1] = sbox(key[14]); |
| 806 | sbox_key[2] = sbox(key[15]); |
| 807 | sbox_key[3] = sbox(key[12]); |
| 808 | |
| 809 | rcon = rcon_table[round]; |
| 810 | |
| 811 | xor_32(&key[0], sbox_key, &key[0]); |
| 812 | key[0] = key[0] ^ rcon; |
| 813 | |
| 814 | xor_32(&key[4], &key[0], &key[4]); |
| 815 | xor_32(&key[8], &key[4], &key[8]); |
| 816 | xor_32(&key[12], &key[8], &key[12]); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 817 | } |
| 818 | |
| 819 | static void byte_sub(u8 *in, u8 *out) |
| 820 | { |
| 821 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 822 | for (i = 0; i < 16; i++) |
| 823 | out[i] = sbox(in[i]); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | static void shift_row(u8 *in, u8 *out) |
| 827 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 828 | out[0] = in[0]; |
| 829 | out[1] = in[5]; |
| 830 | out[2] = in[10]; |
| 831 | out[3] = in[15]; |
| 832 | out[4] = in[4]; |
| 833 | out[5] = in[9]; |
| 834 | out[6] = in[14]; |
| 835 | out[7] = in[3]; |
| 836 | out[8] = in[8]; |
| 837 | out[9] = in[13]; |
| 838 | out[10] = in[2]; |
| 839 | out[11] = in[7]; |
| 840 | out[12] = in[12]; |
| 841 | out[13] = in[1]; |
| 842 | out[14] = in[6]; |
| 843 | out[15] = in[11]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | static void mix_column(u8 *in, u8 *out) |
| 847 | { |
| 848 | int i; |
| 849 | u8 add1b[4]; |
| 850 | u8 add1bf7[4]; |
| 851 | u8 rotl[4]; |
Ioana Ciornei | e7b1269 | 2015-03-09 15:43:25 +0200 | [diff] [blame] | 852 | u8 swap_halves[4]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 853 | u8 andf7[4]; |
| 854 | u8 rotr[4]; |
| 855 | u8 temp[4]; |
| 856 | u8 tempb[4]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 857 | for (i = 0 ; i < 4; i++) { |
| 858 | if ((in[i] & 0x80) == 0x80) |
| 859 | add1b[i] = 0x1b; |
| 860 | else |
| 861 | add1b[i] = 0x00; |
| 862 | } |
| 863 | |
Ioana Ciornei | e7b1269 | 2015-03-09 15:43:25 +0200 | [diff] [blame] | 864 | swap_halves[0] = in[2]; /* Swap halves */ |
| 865 | swap_halves[1] = in[3]; |
| 866 | swap_halves[2] = in[0]; |
| 867 | swap_halves[3] = in[1]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 868 | |
| 869 | rotl[0] = in[3]; /* Rotate left 8 bits */ |
| 870 | rotl[1] = in[0]; |
| 871 | rotl[2] = in[1]; |
| 872 | rotl[3] = in[2]; |
| 873 | |
| 874 | andf7[0] = in[0] & 0x7f; |
| 875 | andf7[1] = in[1] & 0x7f; |
| 876 | andf7[2] = in[2] & 0x7f; |
| 877 | andf7[3] = in[3] & 0x7f; |
| 878 | |
| 879 | for (i = 3; i > 0; i--) { /* logical shift left 1 bit */ |
| 880 | andf7[i] = andf7[i] << 1; |
| 881 | if ((andf7[i-1] & 0x80) == 0x80) |
| 882 | andf7[i] = (andf7[i] | 0x01); |
| 883 | } |
| 884 | andf7[0] = andf7[0] << 1; |
| 885 | andf7[0] = andf7[0] & 0xfe; |
| 886 | |
| 887 | xor_32(add1b, andf7, add1bf7); |
| 888 | |
| 889 | xor_32(in, add1bf7, rotr); |
| 890 | |
| 891 | temp[0] = rotr[0]; /* Rotate right 8 bits */ |
| 892 | rotr[0] = rotr[1]; |
| 893 | rotr[1] = rotr[2]; |
| 894 | rotr[2] = rotr[3]; |
| 895 | rotr[3] = temp[0]; |
| 896 | |
| 897 | xor_32(add1bf7, rotr, temp); |
Ioana Ciornei | e7b1269 | 2015-03-09 15:43:25 +0200 | [diff] [blame] | 898 | xor_32(swap_halves, rotl, tempb); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 899 | xor_32(temp, tempb, out); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext) |
| 903 | { |
| 904 | int round; |
| 905 | int i; |
| 906 | u8 intermediatea[16]; |
| 907 | u8 intermediateb[16]; |
| 908 | u8 round_key[16]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 909 | for (i = 0; i < 16; i++) |
| 910 | round_key[i] = key[i]; |
| 911 | for (round = 0; round < 11; round++) { |
| 912 | if (round == 0) { |
| 913 | xor_128(round_key, data, ciphertext); |
| 914 | next_key(round_key, round); |
| 915 | } else if (round == 10) { |
| 916 | byte_sub(ciphertext, intermediatea); |
| 917 | shift_row(intermediatea, intermediateb); |
| 918 | xor_128(intermediateb, round_key, ciphertext); |
| 919 | } else { /* 1 - 9 */ |
| 920 | byte_sub(ciphertext, intermediatea); |
| 921 | shift_row(intermediatea, intermediateb); |
| 922 | mix_column(&intermediateb[0], &intermediatea[0]); |
| 923 | mix_column(&intermediateb[4], &intermediatea[4]); |
| 924 | mix_column(&intermediateb[8], &intermediatea[8]); |
| 925 | mix_column(&intermediateb[12], &intermediatea[12]); |
| 926 | xor_128(intermediatea, round_key, ciphertext); |
| 927 | next_key(round_key, round); |
| 928 | } |
| 929 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 930 | } |
| 931 | |
| 932 | /************************************************/ |
| 933 | /* construct_mic_iv() */ |
| 934 | /* Builds the MIC IV from header fields and PN */ |
| 935 | /************************************************/ |
| 936 | static void construct_mic_iv(u8 *mic_iv, int qc_exists, int a4_exists, u8 *mpdu, |
| 937 | uint payload_length, u8 *pn_vector) |
| 938 | { |
| 939 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 940 | mic_iv[0] = 0x59; |
| 941 | if (qc_exists && a4_exists) |
| 942 | mic_iv[1] = mpdu[30] & 0x0f; /* QoS_TC */ |
| 943 | if (qc_exists && !a4_exists) |
| 944 | mic_iv[1] = mpdu[24] & 0x0f; /* mute bits 7-4 */ |
| 945 | if (!qc_exists) |
| 946 | mic_iv[1] = 0x00; |
| 947 | for (i = 2; i < 8; i++) |
| 948 | mic_iv[i] = mpdu[i + 8]; /* mic_iv[2:7] = A2[0:5] = mpdu[10:15] */ |
| 949 | for (i = 8; i < 14; i++) |
| 950 | mic_iv[i] = pn_vector[13 - i]; /* mic_iv[8:13] = PN[5:0] */ |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 951 | mic_iv[14] = (unsigned char)(payload_length / 256); |
| 952 | mic_iv[15] = (unsigned char)(payload_length % 256); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 953 | } |
| 954 | |
| 955 | /************************************************/ |
| 956 | /* construct_mic_header1() */ |
| 957 | /* Builds the first MIC header block from */ |
| 958 | /* header fields. */ |
| 959 | /************************************************/ |
| 960 | static void construct_mic_header1(u8 *mic_header1, int header_length, u8 *mpdu) |
| 961 | { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 962 | mic_header1[0] = (u8)((header_length - 2) / 256); |
| 963 | mic_header1[1] = (u8)((header_length - 2) % 256); |
| 964 | mic_header1[2] = mpdu[0] & 0xcf; /* Mute CF poll & CF ack bits */ |
| 965 | mic_header1[3] = mpdu[1] & 0xc7; /* Mute retry, more data and pwr mgt bits */ |
| 966 | mic_header1[4] = mpdu[4]; /* A1 */ |
| 967 | mic_header1[5] = mpdu[5]; |
| 968 | mic_header1[6] = mpdu[6]; |
| 969 | mic_header1[7] = mpdu[7]; |
| 970 | mic_header1[8] = mpdu[8]; |
| 971 | mic_header1[9] = mpdu[9]; |
| 972 | mic_header1[10] = mpdu[10]; /* A2 */ |
| 973 | mic_header1[11] = mpdu[11]; |
| 974 | mic_header1[12] = mpdu[12]; |
| 975 | mic_header1[13] = mpdu[13]; |
| 976 | mic_header1[14] = mpdu[14]; |
| 977 | mic_header1[15] = mpdu[15]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 978 | } |
| 979 | |
| 980 | /************************************************/ |
| 981 | /* construct_mic_header2() */ |
| 982 | /* Builds the last MIC header block from */ |
| 983 | /* header fields. */ |
| 984 | /************************************************/ |
| 985 | static void construct_mic_header2(u8 *mic_header2, u8 *mpdu, int a4_exists, int qc_exists) |
| 986 | { |
| 987 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 988 | for (i = 0; i < 16; i++) |
| 989 | mic_header2[i] = 0x00; |
| 990 | |
| 991 | mic_header2[0] = mpdu[16]; /* A3 */ |
| 992 | mic_header2[1] = mpdu[17]; |
| 993 | mic_header2[2] = mpdu[18]; |
| 994 | mic_header2[3] = mpdu[19]; |
| 995 | mic_header2[4] = mpdu[20]; |
| 996 | mic_header2[5] = mpdu[21]; |
| 997 | |
| 998 | mic_header2[6] = 0x00; |
| 999 | mic_header2[7] = 0x00; /* mpdu[23]; */ |
| 1000 | |
| 1001 | if (!qc_exists && a4_exists) { |
| 1002 | for (i = 0; i < 6; i++) |
| 1003 | mic_header2[8+i] = mpdu[24+i]; /* A4 */ |
| 1004 | } |
| 1005 | |
| 1006 | if (qc_exists && !a4_exists) { |
| 1007 | mic_header2[8] = mpdu[24] & 0x0f; /* mute bits 15 - 4 */ |
| 1008 | mic_header2[9] = mpdu[25] & 0x00; |
| 1009 | } |
| 1010 | |
| 1011 | if (qc_exists && a4_exists) { |
| 1012 | for (i = 0; i < 6; i++) |
| 1013 | mic_header2[8+i] = mpdu[24+i]; /* A4 */ |
| 1014 | |
| 1015 | mic_header2[14] = mpdu[30] & 0x0f; |
| 1016 | mic_header2[15] = mpdu[31] & 0x00; |
| 1017 | } |
| 1018 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | /************************************************/ |
| 1022 | /* construct_mic_header2() */ |
| 1023 | /* Builds the last MIC header block from */ |
| 1024 | /* header fields. */ |
| 1025 | /************************************************/ |
| 1026 | static void construct_ctr_preload(u8 *ctr_preload, int a4_exists, int qc_exists, u8 *mpdu, u8 *pn_vector, int c) |
| 1027 | { |
| 1028 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1029 | for (i = 0; i < 16; i++) |
| 1030 | ctr_preload[i] = 0x00; |
| 1031 | i = 0; |
| 1032 | |
| 1033 | ctr_preload[0] = 0x01; /* flag */ |
| 1034 | if (qc_exists && a4_exists) |
| 1035 | ctr_preload[1] = mpdu[30] & 0x0f; /* QoC_Control */ |
| 1036 | if (qc_exists && !a4_exists) |
| 1037 | ctr_preload[1] = mpdu[24] & 0x0f; |
| 1038 | |
| 1039 | for (i = 2; i < 8; i++) |
| 1040 | ctr_preload[i] = mpdu[i + 8]; /* ctr_preload[2:7] = A2[0:5] = mpdu[10:15] */ |
| 1041 | for (i = 8; i < 14; i++) |
| 1042 | ctr_preload[i] = pn_vector[13 - i]; /* ctr_preload[8:13] = PN[5:0] */ |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 1043 | ctr_preload[14] = (unsigned char)(c / 256); /* Ctr */ |
| 1044 | ctr_preload[15] = (unsigned char)(c % 256); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1045 | } |
| 1046 | |
| 1047 | /************************************/ |
| 1048 | /* bitwise_xor() */ |
| 1049 | /* A 128 bit, bitwise exclusive or */ |
| 1050 | /************************************/ |
| 1051 | static void bitwise_xor(u8 *ina, u8 *inb, u8 *out) |
| 1052 | { |
| 1053 | int i; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1054 | for (i = 0; i < 16; i++) |
| 1055 | out[i] = ina[i] ^ inb[i]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | static int aes_cipher(u8 *key, uint hdrlen, u8 *pframe, uint plen) |
| 1059 | { |
| 1060 | uint qc_exists, a4_exists, i, j, payload_remainder, |
| 1061 | num_blocks, payload_index; |
| 1062 | |
| 1063 | u8 pn_vector[6]; |
| 1064 | u8 mic_iv[16]; |
| 1065 | u8 mic_header1[16]; |
| 1066 | u8 mic_header2[16]; |
| 1067 | u8 ctr_preload[16]; |
| 1068 | |
| 1069 | /* Intermediate Buffers */ |
| 1070 | u8 chain_buffer[16]; |
| 1071 | u8 aes_out[16]; |
| 1072 | u8 padded_buffer[16]; |
| 1073 | u8 mic[8]; |
| 1074 | uint frtype = GetFrameType(pframe); |
| 1075 | uint frsubtype = GetFrameSubType(pframe); |
| 1076 | |
Aya Mahfouz | 10a8643 | 2015-02-26 11:43:09 +0200 | [diff] [blame] | 1077 | frsubtype >>= 4; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1078 | |
Luca Ceresoli | d0beccb | 2015-12-02 22:54:01 +0100 | [diff] [blame] | 1079 | memset(mic_iv, 0, 16); |
| 1080 | memset(mic_header1, 0, 16); |
| 1081 | memset(mic_header2, 0, 16); |
| 1082 | memset(ctr_preload, 0, 16); |
| 1083 | memset(chain_buffer, 0, 16); |
| 1084 | memset(aes_out, 0, 16); |
| 1085 | memset(padded_buffer, 0, 16); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1086 | |
| 1087 | if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen == WLAN_HDR_A3_QOS_LEN)) |
| 1088 | a4_exists = 0; |
| 1089 | else |
| 1090 | a4_exists = 1; |
| 1091 | |
| 1092 | if ((frtype == WIFI_DATA_CFACK) || (frtype == WIFI_DATA_CFPOLL) || (frtype == WIFI_DATA_CFACKPOLL)) { |
| 1093 | qc_exists = 1; |
| 1094 | if (hdrlen != WLAN_HDR_A3_QOS_LEN) |
| 1095 | hdrlen += 2; |
| 1096 | } else if ((frsubtype == 0x08) || (frsubtype == 0x09) || (frsubtype == 0x0a) || (frsubtype == 0x0b)) { |
| 1097 | if (hdrlen != WLAN_HDR_A3_QOS_LEN) |
| 1098 | hdrlen += 2; |
| 1099 | qc_exists = 1; |
| 1100 | } else { |
| 1101 | qc_exists = 0; |
| 1102 | } |
| 1103 | |
| 1104 | pn_vector[0] = pframe[hdrlen]; |
| 1105 | pn_vector[1] = pframe[hdrlen+1]; |
| 1106 | pn_vector[2] = pframe[hdrlen+4]; |
| 1107 | pn_vector[3] = pframe[hdrlen+5]; |
| 1108 | pn_vector[4] = pframe[hdrlen+6]; |
| 1109 | pn_vector[5] = pframe[hdrlen+7]; |
| 1110 | |
| 1111 | construct_mic_iv(mic_iv, qc_exists, a4_exists, pframe, plen, pn_vector); |
| 1112 | |
| 1113 | construct_mic_header1(mic_header1, hdrlen, pframe); |
| 1114 | construct_mic_header2(mic_header2, pframe, a4_exists, qc_exists); |
| 1115 | |
| 1116 | payload_remainder = plen % 16; |
| 1117 | num_blocks = plen / 16; |
| 1118 | |
| 1119 | /* Find start of payload */ |
Tina Johnson | dce34ae | 2015-03-09 12:02:47 +0530 | [diff] [blame] | 1120 | payload_index = hdrlen + 8; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1121 | |
| 1122 | /* Calculate MIC */ |
| 1123 | aes128k128d(key, mic_iv, aes_out); |
| 1124 | bitwise_xor(aes_out, mic_header1, chain_buffer); |
| 1125 | aes128k128d(key, chain_buffer, aes_out); |
| 1126 | bitwise_xor(aes_out, mic_header2, chain_buffer); |
| 1127 | aes128k128d(key, chain_buffer, aes_out); |
| 1128 | |
| 1129 | for (i = 0; i < num_blocks; i++) { |
| 1130 | bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);/* bitwise_xor(aes_out, &message[payload_index], chain_buffer); */ |
| 1131 | |
| 1132 | payload_index += 16; |
| 1133 | aes128k128d(key, chain_buffer, aes_out); |
| 1134 | } |
| 1135 | |
| 1136 | /* Add on the final payload block if it needs padding */ |
| 1137 | if (payload_remainder > 0) { |
| 1138 | for (j = 0; j < 16; j++) |
| 1139 | padded_buffer[j] = 0x00; |
| 1140 | for (j = 0; j < payload_remainder; j++) |
| 1141 | padded_buffer[j] = pframe[payload_index++];/* padded_buffer[j] = message[payload_index++]; */ |
| 1142 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1143 | aes128k128d(key, chain_buffer, aes_out); |
| 1144 | } |
| 1145 | |
| 1146 | for (j = 0; j < 8; j++) |
| 1147 | mic[j] = aes_out[j]; |
| 1148 | |
| 1149 | /* Insert MIC into payload */ |
| 1150 | for (j = 0; j < 8; j++) |
Dan Carpenter | 50b14a9 | 2014-04-29 15:41:01 +0300 | [diff] [blame] | 1151 | pframe[payload_index+j] = mic[j]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1152 | |
| 1153 | payload_index = hdrlen + 8; |
| 1154 | for (i = 0; i < num_blocks; i++) { |
| 1155 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, i+1); |
| 1156 | aes128k128d(key, ctr_preload, aes_out); |
| 1157 | bitwise_xor(aes_out, &pframe[payload_index], chain_buffer); |
| 1158 | for (j = 0; j < 16; j++) |
| 1159 | pframe[payload_index++] = chain_buffer[j]; |
| 1160 | } |
| 1161 | |
| 1162 | if (payload_remainder > 0) { /* If there is a short final block, then pad it,*/ |
| 1163 | /* encrypt it and copy the unpadded part back */ |
| 1164 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, num_blocks+1); |
| 1165 | |
| 1166 | for (j = 0; j < 16; j++) |
| 1167 | padded_buffer[j] = 0x00; |
| 1168 | for (j = 0; j < payload_remainder; j++) |
| 1169 | padded_buffer[j] = pframe[payload_index+j]; |
| 1170 | aes128k128d(key, ctr_preload, aes_out); |
| 1171 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1172 | for (j = 0; j < payload_remainder; j++) |
| 1173 | pframe[payload_index++] = chain_buffer[j]; |
| 1174 | } |
| 1175 | /* Encrypt the MIC */ |
| 1176 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, 0); |
| 1177 | |
| 1178 | for (j = 0; j < 16; j++) |
| 1179 | padded_buffer[j] = 0x00; |
| 1180 | for (j = 0; j < 8; j++) |
| 1181 | padded_buffer[j] = pframe[j+hdrlen+8+plen]; |
| 1182 | |
| 1183 | aes128k128d(key, ctr_preload, aes_out); |
| 1184 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1185 | for (j = 0; j < 8; j++) |
| 1186 | pframe[payload_index++] = chain_buffer[j]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1187 | return _SUCCESS; |
| 1188 | } |
| 1189 | |
| 1190 | u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe) |
| 1191 | { /* exclude ICV */ |
| 1192 | |
| 1193 | /*static*/ |
| 1194 | /* unsigned char message[MAX_MSG_SIZE]; */ |
| 1195 | |
| 1196 | /* Intermediate Buffers */ |
| 1197 | int curfragnum, length; |
| 1198 | u8 *pframe, *prwskey; /* *payload,*iv */ |
| 1199 | u8 hw_hdr_offset = 0; |
| 1200 | struct sta_info *stainfo; |
| 1201 | struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib; |
| 1202 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 1203 | struct xmit_priv *pxmitpriv = &padapter->xmitpriv; |
| 1204 | |
| 1205 | /* uint offset = 0; */ |
| 1206 | u32 res = _SUCCESS; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1207 | |
| 1208 | if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL) |
| 1209 | return _FAIL; |
| 1210 | |
| 1211 | hw_hdr_offset = TXDESC_SIZE + |
| 1212 | (((struct xmit_frame *)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ); |
| 1213 | |
| 1214 | pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset; |
| 1215 | |
| 1216 | /* 4 start to encrypt each fragment */ |
Gulsah Kose | 0d20dac | 2014-10-29 21:29:56 +0200 | [diff] [blame] | 1217 | if (pattrib->encrypt == _AES_) { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1218 | if (pattrib->psta) |
| 1219 | stainfo = pattrib->psta; |
| 1220 | else |
| 1221 | stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]); |
| 1222 | |
| 1223 | if (stainfo != NULL) { |
| 1224 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_encrypt: stainfo!= NULL!!!\n")); |
| 1225 | |
| 1226 | if (IS_MCAST(pattrib->ra)) |
| 1227 | prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey; |
| 1228 | else |
| 1229 | prwskey = &stainfo->dot118021x_UncstKey.skey[0]; |
| 1230 | for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) { |
| 1231 | if ((curfragnum+1) == pattrib->nr_frags) { /* 4 the last fragment */ |
| 1232 | length = pattrib->last_txcmdsz-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
| 1233 | |
| 1234 | aes_cipher(prwskey, pattrib->hdrlen, pframe, length); |
| 1235 | } else{ |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 1236 | length = pxmitpriv->frag_len-pattrib->hdrlen-pattrib->iv_len-pattrib->icv_len; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1237 | |
| 1238 | aes_cipher(prwskey, pattrib->hdrlen, pframe, length); |
| 1239 | pframe += pxmitpriv->frag_len; |
Jia He | 7be921a2 | 2014-11-04 09:39:58 +0800 | [diff] [blame] | 1240 | pframe = (u8 *)round_up((size_t)(pframe), 8); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1241 | } |
| 1242 | } |
| 1243 | } else{ |
| 1244 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_encrypt: stainfo==NULL!!!\n")); |
| 1245 | res = _FAIL; |
| 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1250 | return res; |
| 1251 | } |
| 1252 | |
| 1253 | static int aes_decipher(u8 *key, uint hdrlen, |
| 1254 | u8 *pframe, uint plen) |
| 1255 | { |
| 1256 | static u8 message[MAX_MSG_SIZE]; |
| 1257 | uint qc_exists, a4_exists, i, j, payload_remainder, |
| 1258 | num_blocks, payload_index; |
| 1259 | int res = _SUCCESS; |
| 1260 | u8 pn_vector[6]; |
| 1261 | u8 mic_iv[16]; |
| 1262 | u8 mic_header1[16]; |
| 1263 | u8 mic_header2[16]; |
| 1264 | u8 ctr_preload[16]; |
| 1265 | |
| 1266 | /* Intermediate Buffers */ |
| 1267 | u8 chain_buffer[16]; |
| 1268 | u8 aes_out[16]; |
| 1269 | u8 padded_buffer[16]; |
| 1270 | u8 mic[8]; |
| 1271 | |
| 1272 | /* uint offset = 0; */ |
| 1273 | uint frtype = GetFrameType(pframe); |
| 1274 | uint frsubtype = GetFrameSubType(pframe); |
Aya Mahfouz | 10a8643 | 2015-02-26 11:43:09 +0200 | [diff] [blame] | 1275 | frsubtype >>= 4; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1276 | |
Luca Ceresoli | d0beccb | 2015-12-02 22:54:01 +0100 | [diff] [blame] | 1277 | memset(mic_iv, 0, 16); |
| 1278 | memset(mic_header1, 0, 16); |
| 1279 | memset(mic_header2, 0, 16); |
| 1280 | memset(ctr_preload, 0, 16); |
| 1281 | memset(chain_buffer, 0, 16); |
| 1282 | memset(aes_out, 0, 16); |
| 1283 | memset(padded_buffer, 0, 16); |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1284 | |
| 1285 | /* start to decrypt the payload */ |
| 1286 | |
| 1287 | num_blocks = (plen-8) / 16; /* plen including llc, payload_length and mic) */ |
| 1288 | |
| 1289 | payload_remainder = (plen-8) % 16; |
| 1290 | |
| 1291 | pn_vector[0] = pframe[hdrlen]; |
| 1292 | pn_vector[1] = pframe[hdrlen+1]; |
| 1293 | pn_vector[2] = pframe[hdrlen+4]; |
| 1294 | pn_vector[3] = pframe[hdrlen+5]; |
| 1295 | pn_vector[4] = pframe[hdrlen+6]; |
| 1296 | pn_vector[5] = pframe[hdrlen+7]; |
| 1297 | |
| 1298 | if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen == WLAN_HDR_A3_QOS_LEN)) |
| 1299 | a4_exists = 0; |
| 1300 | else |
| 1301 | a4_exists = 1; |
| 1302 | |
| 1303 | if ((frtype == WIFI_DATA_CFACK) || (frtype == WIFI_DATA_CFPOLL) || |
| 1304 | (frtype == WIFI_DATA_CFACKPOLL)) { |
| 1305 | qc_exists = 1; |
| 1306 | if (hdrlen != WLAN_HDR_A3_QOS_LEN) |
| 1307 | hdrlen += 2; |
| 1308 | } else if ((frsubtype == 0x08) || (frsubtype == 0x09) || |
| 1309 | (frsubtype == 0x0a) || (frsubtype == 0x0b)) { |
| 1310 | if (hdrlen != WLAN_HDR_A3_QOS_LEN) |
| 1311 | hdrlen += 2; |
| 1312 | qc_exists = 1; |
| 1313 | } else { |
| 1314 | qc_exists = 0; |
| 1315 | } |
| 1316 | |
| 1317 | /* now, decrypt pframe with hdrlen offset and plen long */ |
| 1318 | |
| 1319 | payload_index = hdrlen + 8; /* 8 is for extiv */ |
| 1320 | |
| 1321 | for (i = 0; i < num_blocks; i++) { |
| 1322 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, i+1); |
| 1323 | |
| 1324 | aes128k128d(key, ctr_preload, aes_out); |
| 1325 | bitwise_xor(aes_out, &pframe[payload_index], chain_buffer); |
| 1326 | |
| 1327 | for (j = 0; j < 16; j++) |
Mayank Bareja | 4e0fa71 | 2015-08-03 11:23:01 +0000 | [diff] [blame] | 1328 | pframe[payload_index++] = chain_buffer[j]; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1329 | } |
| 1330 | |
| 1331 | if (payload_remainder > 0) { /* If there is a short final block, then pad it,*/ |
| 1332 | /* encrypt it and copy the unpadded part back */ |
| 1333 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, pframe, pn_vector, num_blocks+1); |
| 1334 | |
| 1335 | for (j = 0; j < 16; j++) |
| 1336 | padded_buffer[j] = 0x00; |
| 1337 | for (j = 0; j < payload_remainder; j++) |
| 1338 | padded_buffer[j] = pframe[payload_index+j]; |
| 1339 | aes128k128d(key, ctr_preload, aes_out); |
| 1340 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1341 | for (j = 0; j < payload_remainder; j++) |
| 1342 | pframe[payload_index++] = chain_buffer[j]; |
| 1343 | } |
| 1344 | |
| 1345 | /* start to calculate the mic */ |
| 1346 | if ((hdrlen+plen+8) <= MAX_MSG_SIZE) |
| 1347 | memcpy(message, pframe, (hdrlen + plen+8)); /* 8 is for ext iv len */ |
| 1348 | |
| 1349 | pn_vector[0] = pframe[hdrlen]; |
| 1350 | pn_vector[1] = pframe[hdrlen+1]; |
| 1351 | pn_vector[2] = pframe[hdrlen+4]; |
| 1352 | pn_vector[3] = pframe[hdrlen+5]; |
| 1353 | pn_vector[4] = pframe[hdrlen+6]; |
| 1354 | pn_vector[5] = pframe[hdrlen+7]; |
| 1355 | construct_mic_iv(mic_iv, qc_exists, a4_exists, message, plen-8, pn_vector); |
| 1356 | |
| 1357 | construct_mic_header1(mic_header1, hdrlen, message); |
| 1358 | construct_mic_header2(mic_header2, message, a4_exists, qc_exists); |
| 1359 | |
| 1360 | payload_remainder = (plen-8) % 16; |
| 1361 | num_blocks = (plen-8) / 16; |
| 1362 | |
| 1363 | /* Find start of payload */ |
Tina Johnson | dce34ae | 2015-03-09 12:02:47 +0530 | [diff] [blame] | 1364 | payload_index = hdrlen + 8; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1365 | |
| 1366 | /* Calculate MIC */ |
| 1367 | aes128k128d(key, mic_iv, aes_out); |
| 1368 | bitwise_xor(aes_out, mic_header1, chain_buffer); |
| 1369 | aes128k128d(key, chain_buffer, aes_out); |
| 1370 | bitwise_xor(aes_out, mic_header2, chain_buffer); |
| 1371 | aes128k128d(key, chain_buffer, aes_out); |
| 1372 | |
| 1373 | for (i = 0; i < num_blocks; i++) { |
| 1374 | bitwise_xor(aes_out, &message[payload_index], chain_buffer); |
| 1375 | |
| 1376 | payload_index += 16; |
| 1377 | aes128k128d(key, chain_buffer, aes_out); |
| 1378 | } |
| 1379 | |
| 1380 | /* Add on the final payload block if it needs padding */ |
| 1381 | if (payload_remainder > 0) { |
| 1382 | for (j = 0; j < 16; j++) |
| 1383 | padded_buffer[j] = 0x00; |
| 1384 | for (j = 0; j < payload_remainder; j++) |
| 1385 | padded_buffer[j] = message[payload_index++]; |
| 1386 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1387 | aes128k128d(key, chain_buffer, aes_out); |
| 1388 | } |
| 1389 | |
| 1390 | for (j = 0 ; j < 8; j++) |
| 1391 | mic[j] = aes_out[j]; |
| 1392 | |
| 1393 | /* Insert MIC into payload */ |
| 1394 | for (j = 0; j < 8; j++) |
| 1395 | message[payload_index+j] = mic[j]; |
| 1396 | |
| 1397 | payload_index = hdrlen + 8; |
| 1398 | for (i = 0; i < num_blocks; i++) { |
| 1399 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, message, pn_vector, i+1); |
| 1400 | aes128k128d(key, ctr_preload, aes_out); |
| 1401 | bitwise_xor(aes_out, &message[payload_index], chain_buffer); |
| 1402 | for (j = 0; j < 16; j++) |
| 1403 | message[payload_index++] = chain_buffer[j]; |
| 1404 | } |
| 1405 | |
| 1406 | if (payload_remainder > 0) { /* If there is a short final block, then pad it,*/ |
| 1407 | /* encrypt it and copy the unpadded part back */ |
| 1408 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, message, pn_vector, num_blocks+1); |
| 1409 | |
| 1410 | for (j = 0; j < 16; j++) |
| 1411 | padded_buffer[j] = 0x00; |
| 1412 | for (j = 0; j < payload_remainder; j++) |
| 1413 | padded_buffer[j] = message[payload_index+j]; |
| 1414 | aes128k128d(key, ctr_preload, aes_out); |
| 1415 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1416 | for (j = 0; j < payload_remainder; j++) |
| 1417 | message[payload_index++] = chain_buffer[j]; |
| 1418 | } |
| 1419 | |
| 1420 | /* Encrypt the MIC */ |
| 1421 | construct_ctr_preload(ctr_preload, a4_exists, qc_exists, message, pn_vector, 0); |
| 1422 | |
| 1423 | for (j = 0; j < 16; j++) |
| 1424 | padded_buffer[j] = 0x00; |
| 1425 | for (j = 0; j < 8; j++) |
| 1426 | padded_buffer[j] = message[j+hdrlen+8+plen-8]; |
| 1427 | |
| 1428 | aes128k128d(key, ctr_preload, aes_out); |
| 1429 | bitwise_xor(aes_out, padded_buffer, chain_buffer); |
| 1430 | for (j = 0; j < 8; j++) |
| 1431 | message[payload_index++] = chain_buffer[j]; |
| 1432 | |
| 1433 | /* compare the mic */ |
| 1434 | for (i = 0; i < 8; i++) { |
| 1435 | if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i]) { |
| 1436 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, |
| 1437 | ("aes_decipher:mic check error mic[%d]: pframe(%x)!=message(%x)\n", |
| 1438 | i, pframe[hdrlen+8+plen-8+i], message[hdrlen+8+plen-8+i])); |
| 1439 | DBG_88E("aes_decipher:mic check error mic[%d]: pframe(%x)!=message(%x)\n", |
| 1440 | i, pframe[hdrlen+8+plen-8+i], message[hdrlen+8+plen-8+i]); |
| 1441 | res = _FAIL; |
| 1442 | } |
| 1443 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1444 | return res; |
| 1445 | } |
| 1446 | |
| 1447 | u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe) |
| 1448 | { /* exclude ICV */ |
| 1449 | /* Intermediate Buffers */ |
| 1450 | int length; |
| 1451 | u8 *pframe, *prwskey; /* *payload,*iv */ |
| 1452 | struct sta_info *stainfo; |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 1453 | struct rx_pkt_attrib *prxattrib = &((struct recv_frame *)precvframe)->attrib; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1454 | struct security_priv *psecuritypriv = &padapter->securitypriv; |
| 1455 | u32 res = _SUCCESS; |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 1456 | pframe = (unsigned char *)((struct recv_frame *)precvframe)->rx_data; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1457 | /* 4 start to encrypt each fragment */ |
Gulsah Kose | 0d20dac | 2014-10-29 21:29:56 +0200 | [diff] [blame] | 1458 | if (prxattrib->encrypt == _AES_) { |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1459 | stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]); |
| 1460 | if (stainfo != NULL) { |
| 1461 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_decrypt: stainfo!= NULL!!!\n")); |
| 1462 | |
| 1463 | if (IS_MCAST(prxattrib->ra)) { |
| 1464 | /* in concurrent we should use sw descrypt in group key, so we remove this message */ |
| 1465 | if (!psecuritypriv->binstallGrpkey) { |
| 1466 | res = _FAIL; |
| 1467 | DBG_88E("%s:rx bc/mc packets, but didn't install group key!!!!!!!!!!\n", __func__); |
| 1468 | goto exit; |
| 1469 | } |
| 1470 | prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey; |
| 1471 | if (psecuritypriv->dot118021XGrpKeyid != prxattrib->key_index) { |
| 1472 | DBG_88E("not match packet_index=%d, install_index=%d\n", |
| 1473 | prxattrib->key_index, psecuritypriv->dot118021XGrpKeyid); |
| 1474 | res = _FAIL; |
| 1475 | goto exit; |
| 1476 | } |
| 1477 | } else { |
| 1478 | prwskey = &stainfo->dot118021x_UncstKey.skey[0]; |
| 1479 | } |
Larry Finger | f31cca8 | 2014-02-14 16:54:07 -0600 | [diff] [blame] | 1480 | length = ((struct recv_frame *)precvframe)->len-prxattrib->hdrlen-prxattrib->iv_len; |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1481 | res = aes_decipher(prwskey, prxattrib->hdrlen, pframe, length); |
| 1482 | } else { |
| 1483 | RT_TRACE(_module_rtl871x_security_c_, _drv_err_, ("rtw_aes_encrypt: stainfo==NULL!!!\n")); |
| 1484 | res = _FAIL; |
| 1485 | } |
| 1486 | } |
Larry Finger | 1b509ca | 2013-08-21 22:33:48 -0500 | [diff] [blame] | 1487 | exit: |
| 1488 | return res; |
| 1489 | } |
| 1490 | |
| 1491 | /* AES tables*/ |
| 1492 | const u32 Te0[256] = { |
| 1493 | 0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU, |
| 1494 | 0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U, |
| 1495 | 0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU, |
| 1496 | 0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU, |
| 1497 | 0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U, |
| 1498 | 0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU, |
| 1499 | 0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU, |
| 1500 | 0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU, |
| 1501 | 0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU, |
| 1502 | 0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU, |
| 1503 | 0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U, |
| 1504 | 0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU, |
| 1505 | 0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU, |
| 1506 | 0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U, |
| 1507 | 0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU, |
| 1508 | 0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU, |
| 1509 | 0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU, |
| 1510 | 0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU, |
| 1511 | 0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU, |
| 1512 | 0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U, |
| 1513 | 0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU, |
| 1514 | 0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU, |
| 1515 | 0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU, |
| 1516 | 0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU, |
| 1517 | 0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U, |
| 1518 | 0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U, |
| 1519 | 0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U, |
| 1520 | 0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U, |
| 1521 | 0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU, |
| 1522 | 0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U, |
| 1523 | 0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U, |
| 1524 | 0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU, |
| 1525 | 0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU, |
| 1526 | 0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U, |
| 1527 | 0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U, |
| 1528 | 0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U, |
| 1529 | 0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU, |
| 1530 | 0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U, |
| 1531 | 0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU, |
| 1532 | 0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U, |
| 1533 | 0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU, |
| 1534 | 0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U, |
| 1535 | 0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U, |
| 1536 | 0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU, |
| 1537 | 0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U, |
| 1538 | 0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U, |
| 1539 | 0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U, |
| 1540 | 0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U, |
| 1541 | 0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U, |
| 1542 | 0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U, |
| 1543 | 0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U, |
| 1544 | 0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U, |
| 1545 | 0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU, |
| 1546 | 0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U, |
| 1547 | 0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U, |
| 1548 | 0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U, |
| 1549 | 0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U, |
| 1550 | 0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U, |
| 1551 | 0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U, |
| 1552 | 0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU, |
| 1553 | 0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U, |
| 1554 | 0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U, |
| 1555 | 0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U, |
| 1556 | 0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU, |
| 1557 | }; |
| 1558 | |
| 1559 | const u32 Td0[256] = { |
| 1560 | 0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U, |
| 1561 | 0x3bab6bcbU, 0x1f9d45f1U, 0xacfa58abU, 0x4be30393U, |
| 1562 | 0x2030fa55U, 0xad766df6U, 0x88cc7691U, 0xf5024c25U, |
| 1563 | 0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U, 0xb562a38fU, |
| 1564 | 0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U, |
| 1565 | 0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U, |
| 1566 | 0x038f5fe7U, 0x15929c95U, 0xbf6d7aebU, 0x955259daU, |
| 1567 | 0xd4be832dU, 0x587421d3U, 0x49e06929U, 0x8ec9c844U, |
| 1568 | 0x75c2896aU, 0xf48e7978U, 0x99583e6bU, 0x27b971ddU, |
| 1569 | 0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U, |
| 1570 | 0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U, |
| 1571 | 0xb16477e0U, 0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U, |
| 1572 | 0x70486858U, 0x8f45fd19U, 0x94de6c87U, 0x527bf8b7U, |
| 1573 | 0xab73d323U, 0x724b02e2U, 0xe31f8f57U, 0x6655ab2aU, |
| 1574 | 0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U, |
| 1575 | 0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU, |
| 1576 | 0x8acf1c2bU, 0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U, |
| 1577 | 0x65daf4cdU, 0x0605bed5U, 0xd134621fU, 0xc4a6fe8aU, |
| 1578 | 0x342e539dU, 0xa2f355a0U, 0x058ae132U, 0xa4f6eb75U, |
| 1579 | 0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U, |
| 1580 | 0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U, |
| 1581 | 0x91548db5U, 0x71c45d05U, 0x0406d46fU, 0x605015ffU, |
| 1582 | 0x1998fb24U, 0xd6bde997U, 0x894043ccU, 0x67d99e77U, |
| 1583 | 0xb0e842bdU, 0x07898b88U, 0xe7195b38U, 0x79c8eedbU, |
| 1584 | 0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U, |
| 1585 | 0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU, |
| 1586 | 0xfd0efffbU, 0x0f853856U, 0x3daed51eU, 0x362d3927U, |
| 1587 | 0x0a0fd964U, 0x685ca621U, 0x9b5b54d1U, 0x24362e3aU, |
| 1588 | 0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U, 0x1b9b919eU, |
| 1589 | 0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U, |
| 1590 | 0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU, |
| 1591 | 0x0e090d0bU, 0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U, |
| 1592 | 0x57f11985U, 0xaf75074cU, 0xee99ddbbU, 0xa37f60fdU, |
| 1593 | 0xf701269fU, 0x5c72f5bcU, 0x44663bc5U, 0x5bfb7e34U, |
| 1594 | 0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U, |
| 1595 | 0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U, |
| 1596 | 0x854a247dU, 0xd2bb3df8U, 0xaef93211U, 0xc729a16dU, |
| 1597 | 0x1d9e2f4bU, 0xdcb230f3U, 0x0d8652ecU, 0x77c1e3d0U, |
| 1598 | 0x2bb3166cU, 0xa970b999U, 0x119448faU, 0x47e96422U, |
| 1599 | 0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU, |
| 1600 | 0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U, |
| 1601 | 0xa6f581cfU, 0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U, |
| 1602 | 0x2c3a9de4U, 0x5078920dU, 0x6a5fcc9bU, 0x547e4662U, |
| 1603 | 0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU, 0x82c3aff5U, |
| 1604 | 0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U, |
| 1605 | 0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU, |
| 1606 | 0xcd267809U, 0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U, |
| 1607 | 0xe6956e65U, 0xaaffe67eU, 0x21bccf08U, 0xef15e8e6U, |
| 1608 | 0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U, 0x29b07cd6U, |
| 1609 | 0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U, |
| 1610 | 0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U, |
| 1611 | 0xf104984aU, 0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU, |
| 1612 | 0x764dd68dU, 0x43efb04dU, 0xccaa4d54U, 0xe49604dfU, |
| 1613 | 0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U, 0x4665517fU, |
| 1614 | 0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU, |
| 1615 | 0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U, |
| 1616 | 0x9ad7618cU, 0x37a10c7aU, 0x59f8148eU, 0xeb133c89U, |
| 1617 | 0xcea927eeU, 0xb761c935U, 0xe11ce5edU, 0x7a47b13cU, |
| 1618 | 0x9cd2df59U, 0x55f2733fU, 0x1814ce79U, 0x73c737bfU, |
| 1619 | 0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U, |
| 1620 | 0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU, |
| 1621 | 0x161dc372U, 0xbce2250cU, 0x283c498bU, 0xff0d9541U, |
| 1622 | 0x39a80171U, 0x080cb3deU, 0xd8b4e49cU, 0x6456c190U, |
| 1623 | 0x7bcb8461U, 0xd532b670U, 0x486c5c74U, 0xd0b85742U, |
| 1624 | }; |
| 1625 | |
| 1626 | const u8 Td4s[256] = { |
| 1627 | 0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U, |
| 1628 | 0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU, |
| 1629 | 0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U, |
| 1630 | 0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU, |
| 1631 | 0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU, |
| 1632 | 0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU, |
| 1633 | 0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U, |
| 1634 | 0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U, |
| 1635 | 0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U, |
| 1636 | 0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U, |
| 1637 | 0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU, |
| 1638 | 0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U, |
| 1639 | 0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU, |
| 1640 | 0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U, |
| 1641 | 0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U, |
| 1642 | 0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU, |
| 1643 | 0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU, |
| 1644 | 0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U, |
| 1645 | 0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U, |
| 1646 | 0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU, |
| 1647 | 0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U, |
| 1648 | 0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU, |
| 1649 | 0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U, |
| 1650 | 0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U, |
| 1651 | 0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U, |
| 1652 | 0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU, |
| 1653 | 0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU, |
| 1654 | 0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU, |
| 1655 | 0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U, |
| 1656 | 0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U, |
| 1657 | 0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U, |
| 1658 | 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU, |
| 1659 | }; |
| 1660 | const u8 rcons[] = { |
| 1661 | 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36 |
| 1662 | /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */ |
| 1663 | }; |
| 1664 | |
| 1665 | /** |
| 1666 | * Expand the cipher key into the encryption key schedule. |
| 1667 | * |
| 1668 | * @return the number of rounds for the given cipher key size. |
| 1669 | */ |
| 1670 | #define ROUND(i, d, s) \ |
| 1671 | do { \ |
| 1672 | d##0 = TE0(s##0) ^ TE1(s##1) ^ TE2(s##2) ^ TE3(s##3) ^ rk[4 * i]; \ |
| 1673 | d##1 = TE0(s##1) ^ TE1(s##2) ^ TE2(s##3) ^ TE3(s##0) ^ rk[4 * i + 1]; \ |
| 1674 | d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[4 * i + 2]; \ |
| 1675 | d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3]; \ |
| 1676 | } while (0); |