summaryrefslogtreecommitdiff
path: root/drivers/staging/rtl8712/rtl871x_security.c
blob: 7b92927a04dc2639cbe8301e12574628b364b84d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
/******************************************************************************
 * rtl871x_security.c
 *
 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
 * Linux device driver for RTL8192SU
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * Modifications for inclusion into the Linux staging tree are
 * Copyright(c) 2010 Larry Finger. All rights reserved.
 *
 * Contact information:
 * WLAN FAE <wlanfae@realtek.com>
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 ******************************************************************************/

#define  _RTL871X_SECURITY_C_

#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/circ_buf.h>
#include <linux/uaccess.h>
#include <asm/byteorder.h>
#include <linux/atomic.h>
#include <linux/semaphore.h>

#include "osdep_service.h"
#include "drv_types.h"
#include "wifi.h"
#include "osdep_intf.h"

/* =====WEP related===== */

#define CRC32_POLY 0x04c11db7

struct arc4context {
	u32 x;
	u32 y;
	u8 state[256];
};

static void arcfour_init(struct arc4context *parc4ctx, u8 * key, u32 key_len)
{
	u32	t, u;
	u32	keyindex;
	u32	stateindex;
	u8 *state;
	u32	counter;

	state = parc4ctx->state;
	parc4ctx->x = 0;
	parc4ctx->y = 0;
	for (counter = 0; counter < 256; counter++)
		state[counter] = (u8)counter;
	keyindex = 0;
	stateindex = 0;
	for (counter = 0; counter < 256; counter++) {
		t = state[counter];
		stateindex = (stateindex + key[keyindex] + t) & 0xff;
		u = state[stateindex];
		state[stateindex] = (u8)t;
		state[counter] = (u8)u;
		if (++keyindex >= key_len)
			keyindex = 0;
	}
}

static u32 arcfour_byte(struct arc4context *parc4ctx)
{
	u32 x;
	u32 y;
	u32 sx, sy;
	u8 *state;

	state = parc4ctx->state;
	x = (parc4ctx->x + 1) & 0xff;
	sx = state[x];
	y = (sx + parc4ctx->y) & 0xff;
	sy = state[y];
	parc4ctx->x = x;
	parc4ctx->y = y;
	state[y] = (u8)sx;
	state[x] = (u8)sy;
	return state[(sx + sy) & 0xff];
}

static void arcfour_encrypt(struct arc4context	*parc4ctx,
		     u8 *dest, u8 *src, u32 len)
{
	u32 i;

	for (i = 0; i < len; i++)
		dest[i] = src[i] ^ (unsigned char)arcfour_byte(parc4ctx);
}

static sint bcrc32initialized;
static u32 crc32_table[256];

static u8 crc32_reverseBit(u8 data)
{
	return ((u8)(data << 7) & 0x80) | ((data << 5) & 0x40) | ((data << 3)
		 & 0x20) | ((data << 1) & 0x10) | ((data >> 1) & 0x08) |
		 ((data >> 3) & 0x04) | ((data >> 5) & 0x02) | ((data >> 7) &
		 0x01);
}

static void crc32_init(void)
{
	if (bcrc32initialized == 1)
		return;
	else {
		sint i, j;
		u32 c;
		u8 *p = (u8 *)&c, *p1;
		u8 k;

		c = 0x12340000;
		for (i = 0; i < 256; ++i) {
			k = crc32_reverseBit((u8)i);
			for (c = ((u32)k) << 24, j = 8; j > 0; --j)
				c = c & 0x80000000 ? (c << 1) ^ CRC32_POLY :
				    (c << 1);
			p1 = (u8 *)&crc32_table[i];
			p1[0] = crc32_reverseBit(p[3]);
			p1[1] = crc32_reverseBit(p[2]);
			p1[2] = crc32_reverseBit(p[1]);
			p1[3] = crc32_reverseBit(p[0]);
		}
		bcrc32initialized = 1;
	}
}

static u32 getcrc32(u8 *buf, u32 len)
{
	u8 *p;
	u32  crc;

	if (bcrc32initialized == 0)
		crc32_init();
	crc = 0xffffffff; /* preload shift register, per CRC-32 spec */
	for (p = buf; len > 0; ++p, --len)
		crc = crc32_table[(crc ^ *p) & 0xff] ^ (crc >> 8);
	return ~crc;    /* transmit complement, per CRC-32 spec */
}

/*
	Need to consider the fragment  situation
*/
void r8712_wep_encrypt(struct _adapter *padapter, u8 *pxmitframe)
{	/* exclude ICV */
	unsigned char	crc[4];
	struct arc4context  mycontext;
	u32 curfragnum, length, keylength;
	u8 *pframe, *payload, *iv;    /*,*wepkey*/
	u8 wepkey[16];
	struct	pkt_attrib  *pattrib = &((struct xmit_frame *)
				       pxmitframe)->attrib;
	struct	security_priv *psecuritypriv = &padapter->securitypriv;
	struct	xmit_priv *pxmitpriv = &padapter->xmitpriv;

	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
		return;
	pframe = ((struct xmit_frame *)pxmitframe)->buf_addr+TXDESC_OFFSET;
	/*start to encrypt each fragment*/
	if ((pattrib->encrypt == _WEP40_) || (pattrib->encrypt == _WEP104_)) {
		keylength = psecuritypriv->DefKeylen[psecuritypriv->
			    PrivacyKeyIndex];
		for (curfragnum = 0; curfragnum < pattrib->nr_frags;
		     curfragnum++) {
			iv = pframe+pattrib->hdrlen;
			memcpy(&wepkey[0], iv, 3);
			memcpy(&wepkey[3], &psecuritypriv->DefKey[
				psecuritypriv->PrivacyKeyIndex].skey[0],
				keylength);
			payload = pframe+pattrib->iv_len+pattrib->hdrlen;
			if ((curfragnum + 1) == pattrib->nr_frags) {
				length = pattrib->last_txcmdsz-pattrib->
					 hdrlen-pattrib->iv_len -
					 pattrib->icv_len;
				*((u32 *)crc) = cpu_to_le32(getcrc32(
						payload, length));
				arcfour_init(&mycontext, wepkey, 3 + keylength);
				arcfour_encrypt(&mycontext, payload, payload,
						length);
				arcfour_encrypt(&mycontext, payload + length,
						crc, 4);
			} else {
				length = pxmitpriv->frag_len-pattrib->hdrlen -
					 pattrib->iv_len-pattrib->icv_len;
				*((u32 *)crc) = cpu_to_le32(getcrc32(
						payload, length));
				arcfour_init(&mycontext, wepkey, 3 + keylength);
				arcfour_encrypt(&mycontext, payload, payload,
						length);
				arcfour_encrypt(&mycontext, payload+length,
						crc, 4);
				pframe += pxmitpriv->frag_len;
				pframe = (u8 *)RND4((addr_t)(pframe));
			}
		}
	}
}

void r8712_wep_decrypt(struct _adapter  *padapter, u8 *precvframe)
{
	/* exclude ICV */
	u8 crc[4];
	struct arc4context  mycontext;
	u32 length, keylength;
	u8 *pframe, *payload, *iv, wepkey[16];
	u8  keyindex;
	struct rx_pkt_attrib  *prxattrib = &(((union recv_frame *)
					  precvframe)->u.hdr.attrib);
	struct security_priv *psecuritypriv = &padapter->securitypriv;

	pframe = (unsigned char *)((union recv_frame *)precvframe)->
		  u.hdr.rx_data;
	/* start to decrypt recvframe */
	if ((prxattrib->encrypt == _WEP40_) || (prxattrib->encrypt ==
	     _WEP104_)) {
		iv = pframe + prxattrib->hdrlen;
		keyindex = (iv[3] & 0x3);
		keylength = psecuritypriv->DefKeylen[keyindex];
		memcpy(&wepkey[0], iv, 3);
		memcpy(&wepkey[3], &psecuritypriv->DefKey[
			psecuritypriv->PrivacyKeyIndex].skey[0],
			keylength);
		length = ((union recv_frame *)precvframe)->
			   u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len;
		payload = pframe+prxattrib->iv_len+prxattrib->hdrlen;
		/* decrypt payload include icv */
		arcfour_init(&mycontext, wepkey, 3 + keylength);
		arcfour_encrypt(&mycontext, payload, payload,  length);
		/* calculate icv and compare the icv */
		*((u32 *)crc) = cpu_to_le32(getcrc32(payload, length - 4));
	}
	return;
}

/* 3 =====TKIP related===== */

static u32 secmicgetuint32(u8 *p)
/* Convert from Byte[] to Us4Byte32 in a portable way */
{
	s32 i;
	u32 res = 0;

	for (i = 0; i < 4; i++)
		res |= ((u32)(*p++)) << (8 * i);
	return res;
}

static void secmicputuint32(u8 *p, u32 val)
/* Convert from Us4Byte32 to Byte[] in a portable way */
{
	long i;
	for (i = 0; i < 4; i++) {
		*p++ = (u8) (val & 0xff);
		val >>= 8;
	}
}

static void secmicclear(struct mic_data *pmicdata)
{
/* Reset the state to the empty message. */
	pmicdata->L = pmicdata->K0;
	pmicdata->R = pmicdata->K1;
	pmicdata->nBytesInM = 0;
	pmicdata->M = 0;
}

void r8712_secmicsetkey(struct mic_data *pmicdata, u8 * key)
{
	/* Set the key */
	pmicdata->K0 = secmicgetuint32(key);
	pmicdata->K1 = secmicgetuint32(key + 4);
	/* and reset the message */
	secmicclear(pmicdata);
}

static void secmicappendbyte(struct mic_data *pmicdata, u8 b)
{
	/* Append the byte to our word-sized buffer */
	pmicdata->M |= ((u32)b) << (8 * pmicdata->nBytesInM);
	pmicdata->nBytesInM++;
	/* Process the word if it is full. */
	if (pmicdata->nBytesInM >= 4) {
		pmicdata->L ^= pmicdata->M;
		pmicdata->R ^= ROL32(pmicdata->L, 17);
		pmicdata->L += pmicdata->R;
		pmicdata->R ^= ((pmicdata->L & 0xff00ff00) >> 8) |
			       ((pmicdata->L & 0x00ff00ff) << 8);
		pmicdata->L += pmicdata->R;
		pmicdata->R ^= ROL32(pmicdata->L, 3);
		pmicdata->L += pmicdata->R;
		pmicdata->R ^= ROR32(pmicdata->L, 2);
		pmicdata->L += pmicdata->R;
		/* Clear the buffer */
		pmicdata->M = 0;
		pmicdata->nBytesInM = 0;
	}
}

void r8712_secmicappend(struct mic_data *pmicdata, u8 * src, u32 nbytes)
{
	/* This is simple */
	while (nbytes > 0) {
		secmicappendbyte(pmicdata, *src++);
		nbytes--;
	}
}

void r8712_secgetmic(struct mic_data *pmicdata, u8 *dst)
{
	/* Append the minimum padding */
	secmicappendbyte(pmicdata, 0x5a);
	secmicappendbyte(pmicdata, 0);
	secmicappendbyte(pmicdata, 0);
	secmicappendbyte(pmicdata, 0);
	secmicappendbyte(pmicdata, 0);
	/* and then zeroes until the length is a multiple of 4 */
	while (pmicdata->nBytesInM != 0)
		secmicappendbyte(pmicdata, 0);
	/* The appendByte function has already computed the result. */
	secmicputuint32(dst, pmicdata->L);
	secmicputuint32(dst + 4, pmicdata->R);
	/* Reset to the empty message. */
	secmicclear(pmicdata);
}

void seccalctkipmic(u8 *key, u8 *header, u8 *data, u32 data_len, u8 *mic_code,
		    u8 pri)
{

	struct mic_data	micdata;
	u8 priority[4] = {0x0, 0x0, 0x0, 0x0};

	r8712_secmicsetkey(&micdata, key);
	priority[0] = pri;
	/* Michael MIC pseudo header: DA, SA, 3 x 0, Priority */
	if (header[1] & 1) {   /* ToDS==1 */
		r8712_secmicappend(&micdata, &header[16], 6);  /* DA */
		if (header[1] & 2)  /* From Ds==1 */
			r8712_secmicappend(&micdata, &header[24], 6);
		else
			r8712_secmicappend(&micdata, &header[10], 6);
	} else {	/* ToDS==0 */
		r8712_secmicappend(&micdata, &header[4], 6);   /* DA */
		if (header[1] & 2)  /* From Ds==1 */
			r8712_secmicappend(&micdata, &header[16], 6);
		else
			r8712_secmicappend(&micdata, &header[10], 6);
	}
	r8712_secmicappend(&micdata, &priority[0], 4);
	r8712_secmicappend(&micdata, data, data_len);
	r8712_secgetmic(&micdata, mic_code);
}

/* macros for extraction/creation of unsigned char/unsigned short values  */
#define RotR1(v16)   ((((v16) >> 1) & 0x7FFF) ^ (((v16) & 1) << 15))
#define   Lo8(v16)   ((u8)((v16) & 0x00FF))
#define   Hi8(v16)   ((u8)(((v16) >> 8) & 0x00FF))
#define  Lo16(v32)   ((u16)((v32) & 0xFFFF))
#define  Hi16(v32)   ((u16)(((v32) >> 16) & 0xFFFF))
#define  Mk16(hi, lo) ((lo) ^ (((u16)(hi)) << 8))

/* select the Nth 16-bit word of the temporal key unsigned char array TK[]   */
#define  TK16(N)  Mk16(tk[2 * (N) + 1], tk[2 * (N)])

/* S-box lookup: 16 bits --> 16 bits */
#define _S_(v16)  (Sbox1[0][Lo8(v16)] ^ Sbox1[1][Hi8(v16)])

/* fixed algorithm "parameters" */
#define PHASE1_LOOP_CNT   8    /* this needs to be "big enough"     */
#define TA_SIZE           6    /*  48-bit transmitter address       */
#define TK_SIZE          16    /* 128-bit temporal key              */
#define P1K_SIZE         10    /*  80-bit Phase1 key                */
#define RC4_KEY_SIZE     16    /* 128-bit RC4KEY (104 bits unknown) */


/* 2-unsigned char by 2-unsigned char subset of the full AES S-box table */
static const unsigned short Sbox1[2][256] = {/* Sbox for hash (can be in ROM) */
	{
	0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
	0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
	0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
	0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
	0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
	0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
	0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
	0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
	0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
	0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
	0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
	0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
	0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
	0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
	0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
	0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
	0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
	0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
	0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
	0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
	0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
	0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
	0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
	0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
	0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
	0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
	0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
	0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
	0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
	0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
	0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
	0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
	},
	{  /* second half is unsigned char-reversed version of first! */
	0xA5C6, 0x84F8, 0x99EE, 0x8DF6, 0x0DFF, 0xBDD6, 0xB1DE, 0x5491,
	0x5060, 0x0302, 0xA9CE, 0x7D56, 0x19E7, 0x62B5, 0xE64D, 0x9AEC,
	0x458F, 0x9D1F, 0x4089, 0x87FA, 0x15EF, 0xEBB2, 0xC98E, 0x0BFB,
	0xEC41, 0x67B3, 0xFD5F, 0xEA45, 0xBF23, 0xF753, 0x96E4, 0x5B9B,
	0xC275, 0x1CE1, 0xAE3D, 0x6A4C, 0x5A6C, 0x417E, 0x02F5, 0x4F83,
	0x5C68, 0xF451, 0x34D1, 0x08F9, 0x93E2, 0x73AB, 0x5362, 0x3F2A,
	0x0C08, 0x5295, 0x6546, 0x5E9D, 0x2830, 0xA137, 0x0F0A, 0xB52F,
	0x090E, 0x3624, 0x9B1B, 0x3DDF, 0x26CD, 0x694E, 0xCD7F, 0x9FEA,
	0x1B12, 0x9E1D, 0x7458, 0x2E34, 0x2D36, 0xB2DC, 0xEEB4, 0xFB5B,
	0xF6A4, 0x4D76, 0x61B7, 0xCE7D, 0x7B52, 0x3EDD, 0x715E, 0x9713,
	0xF5A6, 0x68B9, 0x0000, 0x2CC1, 0x6040, 0x1FE3, 0xC879, 0xEDB6,
	0xBED4, 0x468D, 0xD967, 0x4B72, 0xDE94, 0xD498, 0xE8B0, 0x4A85,
	0x6BBB, 0x2AC5, 0xE54F, 0x16ED, 0xC586, 0xD79A, 0x5566, 0x9411,
	0xCF8A, 0x10E9, 0x0604, 0x81FE, 0xF0A0, 0x4478, 0xBA25, 0xE34B,
	0xF3A2, 0xFE5D, 0xC080, 0x8A05, 0xAD3F, 0xBC21, 0x4870, 0x04F1,
	0xDF63, 0xC177, 0x75AF, 0x6342, 0x3020, 0x1AE5, 0x0EFD, 0x6DBF,
	0x4C81, 0x1418, 0x3526, 0x2FC3, 0xE1BE, 0xA235, 0xCC88, 0x392E,
	0x5793, 0xF255, 0x82FC, 0x477A, 0xACC8, 0xE7BA, 0x2B32, 0x95E6,
	0xA0C0, 0x9819, 0xD19E, 0x7FA3, 0x6644, 0x7E54, 0xAB3B, 0x830B,
	0xCA8C, 0x29C7, 0xD36B, 0x3C28, 0x79A7, 0xE2BC, 0x1D16, 0x76AD,
	0x3BDB, 0x5664, 0x4E74, 0x1E14, 0xDB92, 0x0A0C, 0x6C48, 0xE4B8,
	0x5D9F, 0x6EBD, 0xEF43, 0xA6C4, 0xA839, 0xA431, 0x37D3, 0x8BF2,
	0x32D5, 0x438B, 0x596E, 0xB7DA, 0x8C01, 0x64B1, 0xD29C, 0xE049,
	0xB4D8, 0xFAAC, 0x07F3, 0x25CF, 0xAFCA, 0x8EF4, 0xE947, 0x1810,
	0xD56F, 0x88F0, 0x6F4A, 0x725C, 0x2438, 0xF157, 0xC773, 0x5197,
	0x23CB, 0x7CA1, 0x9CE8, 0x213E, 0xDD96, 0xDC61, 0x860D, 0x850F,
	0x90E0, 0x427C, 0xC471, 0xAACC, 0xD890, 0x0506, 0x01F7, 0x121C,
	0xA3C2, 0x5F6A, 0xF9AE, 0xD069, 0x9117, 0x5899, 0x273A, 0xB927,
	0x38D9, 0x13EB, 0xB32B, 0x3322, 0xBBD2, 0x70A9, 0x8907, 0xA733,
	0xB62D, 0x223C, 0x9215, 0x20C9, 0x4987, 0xFFAA, 0x7850, 0x7AA5,
	0x8F03, 0xF859, 0x8009, 0x171A, 0xDA65, 0x31D7, 0xC684, 0xB8D0,
	0xC382, 0xB029, 0x775A, 0x111E, 0xCB7B, 0xFCA8, 0xD66D, 0x3A2C,
	}
};

/*
**********************************************************************
* Routine: Phase 1 -- generate P1K, given TA, TK, IV32
*
* Inputs:
*     tk[]      = temporal key                         [128 bits]
*     ta[]      = transmitter's MAC address            [ 48 bits]
*     iv32      = upper 32 bits of IV                  [ 32 bits]
* Output:
*     p1k[]     = Phase 1 key                          [ 80 bits]
*
* Note:
*     This function only needs to be called every 2**16 packets,
*     although in theory it could be called every packet.
*
**********************************************************************
*/
static void phase1(u16 *p1k, const u8 *tk, const u8 *ta, u32 iv32)
{
	sint  i;

	/* Initialize the 80 bits of P1K[] from IV32 and TA[0..5]     */
	p1k[0] = Lo16(iv32);
	p1k[1] = Hi16(iv32);
	p1k[2] = Mk16(ta[1], ta[0]); /* use TA[] as little-endian */
	p1k[3] = Mk16(ta[3], ta[2]);
	p1k[4] = Mk16(ta[5], ta[4]);
	/* Now compute an unbalanced Feistel cipher with 80-bit block */
	/* size on the 80-bit block P1K[], using the 128-bit key TK[] */
	for (i = 0; i < PHASE1_LOOP_CNT; i++) {  /* Each add is mod 2**16 */
		p1k[0] += _S_(p1k[4] ^ TK16((i&1) + 0));
		p1k[1] += _S_(p1k[0] ^ TK16((i&1) + 2));
		p1k[2] += _S_(p1k[1] ^ TK16((i&1) + 4));
		p1k[3] += _S_(p1k[2] ^ TK16((i&1) + 6));
		p1k[4] += _S_(p1k[3] ^ TK16((i&1) + 0));
		p1k[4] +=  (unsigned short)i;	/* avoid "slide attacks" */
	}
}

/*
**********************************************************************
* Routine: Phase 2 -- generate RC4KEY, given TK, P1K, IV16
*
* Inputs:
*     tk[]      = Temporal key                         [128 bits]
*     p1k[]     = Phase 1 output key                   [ 80 bits]
*     iv16      = low 16 bits of IV counter            [ 16 bits]
* Output:
*     rc4key[]  = the key used to encrypt the packet   [128 bits]
*
* Note:
*     The value {TA,IV32,IV16} for Phase1/Phase2 must be unique
*     across all packets using the same key TK value. Then, for a
*     given value of TK[], this TKIP48 construction guarantees that
*     the final RC4KEY value is unique across all packets.
*
* Suggested implementation optimization: if PPK[] is "overlaid"
*     appropriately on RC4KEY[], there is no need for the final
*     for loop below that copies the PPK[] result into RC4KEY[].
*
**********************************************************************
*/
static void phase2(u8 *rc4key, const u8 *tk, const u16 *p1k, u16 iv16)
{
	sint  i;
	u16 PPK[6];			/* temporary key for mixing    */

	/* Note: all adds in the PPK[] equations below are mod 2**16 */
	for (i = 0; i < 5; i++)
		PPK[i] = p1k[i]; /* first, copy P1K to PPK */
	PPK[5]  =  p1k[4] + iv16; /* next,  add in IV16 */
	/* Bijective non-linear mixing of the 96 bits of PPK[0..5] */
	PPK[0] += _S_(PPK[5] ^ TK16(0));   /* Mix key in each "round" */
	PPK[1] += _S_(PPK[0] ^ TK16(1));
	PPK[2] += _S_(PPK[1] ^ TK16(2));
	PPK[3] += _S_(PPK[2] ^ TK16(3));
	PPK[4] += _S_(PPK[3] ^ TK16(4));
	PPK[5] += _S_(PPK[4] ^ TK16(5));   /* Total # S-box lookups == 6  */
	/* Final sweep: bijective, "linear". Rotates kill LSB correlations   */
	PPK[0] +=  RotR1(PPK[5] ^ TK16(6));
	PPK[1] +=  RotR1(PPK[0] ^ TK16(7));   /* Use all of TK[] in Phase2   */
	PPK[2] +=  RotR1(PPK[1]);
	PPK[3] +=  RotR1(PPK[2]);
	PPK[4] +=  RotR1(PPK[3]);
	PPK[5] +=  RotR1(PPK[4]);
	/* Note: At this point, for a given key TK[0..15], the 96-bit output */
	/* value PPK[0..5] is guaranteed to be unique, as a function   */
	/* of the 96-bit "input" value   {TA,IV32,IV16}. That is, P1K  */
	/* is now a keyed permutation of {TA,IV32,IV16}. */
	/* Set RC4KEY[0..3], which includes "cleartext" portion of RC4 key   */
	rc4key[0] = Hi8(iv16); /* RC4KEY[0..2] is the WEP IV  */
	rc4key[1] = (Hi8(iv16) | 0x20) & 0x7F; /* Help avoid weak (FMS) keys  */
	rc4key[2] = Lo8(iv16);
	rc4key[3] = Lo8((PPK[5] ^ TK16(0)) >> 1);
	/* Copy 96 bits of PPK[0..5] to RC4KEY[4..15]  (little-endian) */
	for (i = 0; i < 6; i++) {
		rc4key[4 + 2 * i] = Lo8(PPK[i]);
		rc4key[5 + 2 * i] = Hi8(PPK[i]);
	}
}

/*The hlen isn't include the IV*/
u32 r8712_tkip_encrypt(struct _adapter *padapter, u8 *pxmitframe)
{	/*  exclude ICV */
	u16 pnl;
	u32 pnh;
	u8 rc4key[16];
	u8 ttkey[16];
	u8 crc[4];
	struct arc4context mycontext;
	u32 curfragnum, length, prwskeylen;

	u8 *pframe, *payload, *iv, *prwskey;
	union pn48 txpn;
	struct sta_info *stainfo;
	struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
	u32 res = _SUCCESS;

	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
		return _FAIL;

	pframe = ((struct xmit_frame *)pxmitframe)->buf_addr+TXDESC_OFFSET;
	/* 4 start to encrypt each fragment */
	if (pattrib->encrypt == _TKIP_) {
		if (pattrib->psta)
			stainfo = pattrib->psta;
		else
			stainfo = r8712_get_stainfo(&padapter->stapriv,
				  &pattrib->ra[0]);
		if (stainfo != NULL) {
			prwskey = &stainfo->x_UncstKey.skey[0];
			prwskeylen = 16;
			for (curfragnum = 0; curfragnum < pattrib->nr_frags;
			     curfragnum++) {
				iv = pframe + pattrib->hdrlen;
				payload = pframe+pattrib->iv_len +
					  pattrib->hdrlen;
				GET_TKIP_PN(iv, txpn);
				pnl = (u16)(txpn.val);
				pnh = (u32)(txpn.val >> 16);
				phase1((u16 *)&ttkey[0], prwskey, &pattrib->
				       ta[0], pnh);
				phase2(&rc4key[0], prwskey, (u16 *)&ttkey[0],
				       pnl);
				if ((curfragnum + 1) == pattrib->nr_frags) {
					/* 4 the last fragment */
					length = pattrib->last_txcmdsz -
					     pattrib->hdrlen-pattrib->iv_len -
					     pattrib->icv_len;
					*((u32 *)crc) = cpu_to_le32(
						getcrc32(payload, length));
					arcfour_init(&mycontext, rc4key, 16);
					arcfour_encrypt(&mycontext, payload,
							payload, length);
					arcfour_encrypt(&mycontext, payload +
							length, crc, 4);
				} else {
					length = pxmitpriv->frag_len-pattrib->
						 hdrlen-pattrib->
						 iv_len-pattrib->icv_len;
					*((u32 *)crc) = cpu_to_le32(getcrc32(
							payload, length));
					arcfour_init(&mycontext, rc4key, 16);
					arcfour_encrypt(&mycontext, payload,
							 payload, length);
					arcfour_encrypt(&mycontext,
							payload+length, crc, 4);
					pframe += pxmitpriv->frag_len;
					pframe = (u8 *)RND4((addr_t)(pframe));
				}
			}
		} else
			res = _FAIL;
	}
	return res;
}

/* The hlen doesn't include the IV */
u32 r8712_tkip_decrypt(struct _adapter *padapter, u8 *precvframe)
{	/* exclude ICV */
	u16 pnl;
	u32 pnh;
	u8 rc4key[16];
	u8 ttkey[16];
	u8 crc[4];
	struct arc4context mycontext;
	u32 length, prwskeylen;
	u8 *pframe, *payload, *iv, *prwskey, idx = 0;
	union pn48 txpn;
	struct	sta_info *stainfo;
	struct	rx_pkt_attrib *prxattrib = &((union recv_frame *)
					   precvframe)->u.hdr.attrib;
	struct	security_priv	*psecuritypriv = &padapter->securitypriv;

	pframe = (unsigned char *)((union recv_frame *)
				   precvframe)->u.hdr.rx_data;
	/* 4 start to decrypt recvframe */
	if (prxattrib->encrypt == _TKIP_) {
		stainfo = r8712_get_stainfo(&padapter->stapriv,
					    &prxattrib->ta[0]);
		if (stainfo != NULL) {
			iv = pframe+prxattrib->hdrlen;
			payload = pframe+prxattrib->iv_len + prxattrib->hdrlen;
			length = ((union recv_frame *)precvframe)->
				 u.hdr.len - prxattrib->hdrlen -
				 prxattrib->iv_len;
			if (IS_MCAST(prxattrib->ra)) {
				idx = iv[3];
				prwskey = &psecuritypriv->XGrpKey[
					 ((idx >> 6) & 0x3) - 1].skey[0];
				if (psecuritypriv->binstallGrpkey == false)
					return _FAIL;
			} else
				prwskey = &stainfo->x_UncstKey.skey[0];
			prwskeylen = 16;
			GET_TKIP_PN(iv, txpn);
			pnl = (u16)(txpn.val);
			pnh = (u32)(txpn.val >> 16);
			phase1((u16 *)&ttkey[0], prwskey, &prxattrib->ta[0],
				pnh);
			phase2(&rc4key[0], prwskey, (unsigned short *)
			       &ttkey[0], pnl);
			/* 4 decrypt payload include icv */
			arcfour_init(&mycontext, rc4key, 16);
			arcfour_encrypt(&mycontext, payload, payload, length);
			*((u32 *)crc) = cpu_to_le32(getcrc32(payload,
					length - 4));
			if (crc[3] != payload[length - 1] ||
			    crc[2] != payload[length - 2] ||
			    crc[1] != payload[length - 3] ||
			    crc[0] != payload[length - 4])
				return _FAIL;
		} else
			return _FAIL;
	}
	return _SUCCESS;
}

/* 3 =====AES related===== */

#define MAX_MSG_SIZE	2048
/*****************************/
/******** SBOX Table *********/
/*****************************/

static const u8 sbox_table[256] = {
	0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
	0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
	0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
	0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
	0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
	0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
	0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
	0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
	0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
	0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
	0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
	0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
	0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
	0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
	0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
	0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
	0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
	0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
	0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
	0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
	0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
	0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
	0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
	0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
	0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
	0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
	0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
	0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
	0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
	0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
	0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
	0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
};

/****************************************/
/* aes128k128d()                        */
/* Performs a 128 bit AES encrypt with  */
/* 128 bit data.                        */
/****************************************/
static void xor_128(u8 *a, u8 *b, u8 *out)
{
	sint i;

	for (i = 0; i < 16; i++)
		out[i] = a[i] ^ b[i];
}

static void xor_32(u8 *a, u8 *b, u8 *out)
{
	sint i;
	for (i = 0; i < 4; i++)
		out[i] = a[i] ^ b[i];
}

static u8 sbox(u8 a)
{
	return sbox_table[(sint)a];
}

static void next_key(u8 *key, sint round)
{
	u8 rcon;
	u8 sbox_key[4];
	u8 rcon_table[12] = {
		0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
		0x1b, 0x36, 0x36, 0x36
	};

	sbox_key[0] = sbox(key[13]);
	sbox_key[1] = sbox(key[14]);
	sbox_key[2] = sbox(key[15]);
	sbox_key[3] = sbox(key[12]);
	rcon = rcon_table[round];
	xor_32(&key[0], sbox_key, &key[0]);
	key[0] = key[0] ^ rcon;
	xor_32(&key[4], &key[0], &key[4]);
	xor_32(&key[8], &key[4], &key[8]);
	xor_32(&key[12], &key[8], &key[12]);
}

static void byte_sub(u8 *in, u8 *out)
{
	sint i;
	for (i = 0; i < 16; i++)
		out[i] = sbox(in[i]);
}

static void shift_row(u8 *in, u8 *out)
{
	out[0] =  in[0];
	out[1] =  in[5];
	out[2] =  in[10];
	out[3] =  in[15];
	out[4] =  in[4];
	out[5] =  in[9];
	out[6] =  in[14];
	out[7] =  in[3];
	out[8] =  in[8];
	out[9] =  in[13];
	out[10] = in[2];
	out[11] = in[7];
	out[12] = in[12];
	out[13] = in[1];
	out[14] = in[6];
	out[15] = in[11];
}

static void mix_column(u8 *in, u8 *out)
{
	sint i;
	u8 add1b[4];
	u8 add1bf7[4];
	u8 rotl[4];
	u8 swap_halfs[4];
	u8 andf7[4];
	u8 rotr[4];
	u8 temp[4];
	u8 tempb[4];

	for (i = 0 ; i < 4; i++) {
		if ((in[i] & 0x80) == 0x80)
			add1b[i] = 0x1b;
		else
			add1b[i] = 0x00;
	}
	swap_halfs[0] = in[2];    /* Swap halves */
	swap_halfs[1] = in[3];
	swap_halfs[2] = in[0];
	swap_halfs[3] = in[1];
	rotl[0] = in[3];        /* Rotate left 8 bits */
	rotl[1] = in[0];
	rotl[2] = in[1];
	rotl[3] = in[2];
	andf7[0] = in[0] & 0x7f;
	andf7[1] = in[1] & 0x7f;
	andf7[2] = in[2] & 0x7f;
	andf7[3] = in[3] & 0x7f;
	for (i = 3; i > 0; i--) {   /* logical shift left 1 bit */
		andf7[i] = andf7[i] << 1;
		if ((andf7[i-1] & 0x80) == 0x80)
			andf7[i] = (andf7[i] | 0x01);
	}
	andf7[0] = andf7[0] << 1;
	andf7[0] = andf7[0] & 0xfe;
	xor_32(add1b, andf7, add1bf7);
	xor_32(in, add1bf7, rotr);
	temp[0] = rotr[0];         /* Rotate right 8 bits */
	rotr[0] = rotr[1];
	rotr[1] = rotr[2];
	rotr[2] = rotr[3];
	rotr[3] = temp[0];
	xor_32(add1bf7, rotr, temp);
	xor_32(swap_halfs, rotl, tempb);
	xor_32(temp, tempb, out);
}

static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext)
{
	sint round;
	sint i;
	u8 intermediatea[16];
	u8 intermediateb[16];
	u8 round_key[16];

	for (i = 0; i < 16; i++)
		round_key[i] = key[i];
	for (round = 0; round < 11; round++) {
		if (round == 0) {
			xor_128(round_key, data, ciphertext);
			next_key(round_key, round);
		} else if (round == 10) {
			byte_sub(ciphertext, intermediatea);
			shift_row(intermediatea, intermediateb);
			xor_128(intermediateb, round_key, ciphertext);
		} else {   /* 1 - 9 */
			byte_sub(ciphertext, intermediatea);
			shift_row(intermediatea, intermediateb);
			mix_column(&intermediateb[0], &intermediatea[0]);
			mix_column(&intermediateb[4], &intermediatea[4]);
			mix_column(&intermediateb[8], &intermediatea[8]);
			mix_column(&intermediateb[12], &intermediatea[12]);
			xor_128(intermediatea, round_key, ciphertext);
			next_key(round_key, round);
		}
	}
}

/************************************************/
/* construct_mic_iv()                           */
/* Builds the MIC IV from header fields and PN  */
/************************************************/
static void construct_mic_iv(u8 *mic_iv, sint qc_exists, sint a4_exists,
			     u8 *mpdu, uint payload_length, u8 *pn_vector)
{
	sint i;

	mic_iv[0] = 0x59;
	if (qc_exists && a4_exists)
		mic_iv[1] = mpdu[30] & 0x0f;    /* QoS_TC           */
	if (qc_exists && !a4_exists)
		mic_iv[1] = mpdu[24] & 0x0f;   /* mute bits 7-4    */
	if (!qc_exists)
		mic_iv[1] = 0x00;
	for (i = 2; i < 8; i++)
		mic_iv[i] = mpdu[i + 8];
	for (i = 8; i < 14; i++)
		mic_iv[i] = pn_vector[13 - i]; /* mic_iv[8:13] = PN[5:0] */
	mic_iv[14] = (unsigned char) (payload_length / 256);
	mic_iv[15] = (unsigned char) (payload_length % 256);
}

/************************************************/
/* construct_mic_header1()                      */
/* Builds the first MIC header block from       */
/* header fields.                               */
/************************************************/
static void construct_mic_header1(u8 *mic_header1, sint header_length, u8 *mpdu)
{
	mic_header1[0] = (u8)((header_length - 2) / 256);
	mic_header1[1] = (u8)((header_length - 2) % 256);
	mic_header1[2] = mpdu[0] & 0xcf;    /* Mute CF poll & CF ack bits */
	/* Mute retry, more data and pwr mgt bits */
	mic_header1[3] = mpdu[1] & 0xc7;
	mic_header1[4] = mpdu[4];       /* A1 */
	mic_header1[5] = mpdu[5];
	mic_header1[6] = mpdu[6];
	mic_header1[7] = mpdu[7];
	mic_header1[8] = mpdu[8];
	mic_header1[9] = mpdu[9];
	mic_header1[10] = mpdu[10];     /* A2 */
	mic_header1[11] = mpdu[11];
	mic_header1[12] = mpdu[12];
	mic_header1[13] = mpdu[13];
	mic_header1[14] = mpdu[14];
	mic_header1[15] = mpdu[15];
}

/************************************************/
/* construct_mic_header2()                      */
/* Builds the last MIC header block from        */
/* header fields.                               */
/************************************************/
static void construct_mic_header2(u8 *mic_header2, u8 *mpdu, sint a4_exists,
			   sint qc_exists)
{
	sint i;

	for (i = 0; i < 16; i++)
		mic_header2[i] = 0x00;
	mic_header2[0] = mpdu[16];    /* A3 */
	mic_header2[1] = mpdu[17];
	mic_header2[2] = mpdu[18];
	mic_header2[3] = mpdu[19];
	mic_header2[4] = mpdu[20];
	mic_header2[5] = mpdu[21];
	mic_header2[6] = 0x00;
	mic_header2[7] = 0x00; /* mpdu[23]; */
	if (!qc_exists && a4_exists)
		for (i = 0; i < 6; i++)
			mic_header2[8 + i] = mpdu[24 + i];   /* A4 */
	if (qc_exists && !a4_exists) {
		mic_header2[8] = mpdu[24] & 0x0f; /* mute bits 15 - 4 */
		mic_header2[9] = mpdu[25] & 0x00;
	}
	if (qc_exists && a4_exists) {
		for (i = 0; i < 6; i++)
			mic_header2[8 + i] = mpdu[24 + i];   /* A4 */
		mic_header2[14] = mpdu[30] & 0x0f;
		mic_header2[15] = mpdu[31] & 0x00;
	}
}

/************************************************/
/* construct_mic_header2()                      */
/* Builds the last MIC header block from        */
/* header fields.                               */
/************************************************/
static void construct_ctr_preload(u8 *ctr_preload, sint a4_exists, sint qc_exists,
			   u8 *mpdu, u8 *pn_vector, sint c)
{
	sint i;

	for (i = 0; i < 16; i++)
		ctr_preload[i] = 0x00;
	i = 0;
	ctr_preload[0] = 0x01;    /* flag */
	if (qc_exists && a4_exists)
		ctr_preload[1] = mpdu[30] & 0x0f;
	if (qc_exists && !a4_exists)
		ctr_preload[1] = mpdu[24] & 0x0f;
	for (i = 2; i < 8; i++)
		ctr_preload[i] = mpdu[i + 8];
	for (i = 8; i < 14; i++)
		ctr_preload[i] = pn_vector[13 - i];
	ctr_preload[14] = (unsigned char) (c / 256); /* Ctr */
	ctr_preload[15] = (unsigned char) (c % 256);
}

/************************************/
/* bitwise_xor()                    */
/* A 128 bit, bitwise exclusive or  */
/************************************/
static void bitwise_xor(u8 *ina, u8 *inb, u8 *out)
{
	sint i;

	for (i = 0; i < 16; i++)
		out[i] = ina[i] ^ inb[i];
}

static sint aes_cipher(u8 *key, uint	hdrlen,
			u8 *pframe, uint plen)
{
	uint qc_exists, a4_exists, i, j, payload_remainder;
	uint num_blocks, payload_index;

	u8 pn_vector[6];
	u8 mic_iv[16];
	u8 mic_header1[16];
	u8 mic_header2[16];
	u8 ctr_preload[16];

	/* Intermediate Buffers */
	u8 chain_buffer[16];
	u8 aes_out[16];
	u8 padded_buffer[16];
	u8 mic[8];
	uint	frtype  = GetFrameType(pframe);
	uint	frsubtype  = GetFrameSubType(pframe);

	frsubtype = frsubtype >> 4;
	memset((void *)mic_iv, 0, 16);
	memset((void *)mic_header1, 0, 16);
	memset((void *)mic_header2, 0, 16);
	memset((void *)ctr_preload, 0, 16);
	memset((void *)chain_buffer, 0, 16);
	memset((void *)aes_out, 0, 16);
	memset((void *)padded_buffer, 0, 16);

	if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen ==  WLAN_HDR_A3_QOS_LEN))
		a4_exists = 0;
	else
		a4_exists = 1;

	if ((frtype == WIFI_DATA_CFACK) ||
	     (frtype == WIFI_DATA_CFPOLL) ||
	     (frtype == WIFI_DATA_CFACKPOLL)) {
			qc_exists = 1;
			if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
				hdrlen += 2;
	} else if ((frsubtype == 0x08) ||
		   (frsubtype == 0x09) ||
		   (frsubtype == 0x0a) ||
		   (frsubtype == 0x0b)) {
			if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
				hdrlen += 2;
			qc_exists = 1;
	} else
		qc_exists = 0;
	pn_vector[0] = pframe[hdrlen];
	pn_vector[1] = pframe[hdrlen+1];
	pn_vector[2] = pframe[hdrlen+4];
	pn_vector[3] = pframe[hdrlen+5];
	pn_vector[4] = pframe[hdrlen+6];
	pn_vector[5] = pframe[hdrlen+7];
	construct_mic_iv(mic_iv, qc_exists, a4_exists, pframe, plen, pn_vector);
	construct_mic_header1(mic_header1, hdrlen, pframe);
	construct_mic_header2(mic_header2, pframe, a4_exists, qc_exists);
	payload_remainder = plen % 16;
	num_blocks = plen / 16;
	/* Find start of payload */
	payload_index = (hdrlen + 8);
	/* Calculate MIC */
	aes128k128d(key, mic_iv, aes_out);
	bitwise_xor(aes_out, mic_header1, chain_buffer);
	aes128k128d(key, chain_buffer, aes_out);
	bitwise_xor(aes_out, mic_header2, chain_buffer);
	aes128k128d(key, chain_buffer, aes_out);
	for (i = 0; i < num_blocks; i++) {
		bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);
		payload_index += 16;
		aes128k128d(key, chain_buffer, aes_out);
	}
	/* Add on the final payload block if it needs padding */
	if (payload_remainder > 0) {
		for (j = 0; j < 16; j++)
			padded_buffer[j] = 0x00;
		for (j = 0; j < payload_remainder; j++)
			padded_buffer[j] = pframe[payload_index++];
		bitwise_xor(aes_out, padded_buffer, chain_buffer);
		aes128k128d(key, chain_buffer, aes_out);
	}
	for (j = 0; j < 8; j++)
		mic[j] = aes_out[j];
	/* Insert MIC into payload */
	for (j = 0; j < 8; j++)
		pframe[payload_index+j] = mic[j];
	payload_index = hdrlen + 8;
	for (i = 0; i < num_blocks; i++) {
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      pframe, pn_vector, i + 1);
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);
		for (j = 0; j < 16; j++)
			pframe[payload_index++] = chain_buffer[j];
	}
	if (payload_remainder > 0) {  /* If short final block, then pad it,*/
				      /* encrypt and copy unpadded part back */
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      pframe, pn_vector, num_blocks+1);
		for (j = 0; j < 16; j++)
			padded_buffer[j] = 0x00;
		for (j = 0; j < payload_remainder; j++)
			padded_buffer[j] = pframe[payload_index+j];
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, padded_buffer, chain_buffer);
		for (j = 0; j < payload_remainder; j++)
			pframe[payload_index++] = chain_buffer[j];
	}
	/* Encrypt the MIC */
	construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
			      pframe, pn_vector, 0);
	for (j = 0; j < 16; j++)
		padded_buffer[j] = 0x00;
	for (j = 0; j < 8; j++)
		padded_buffer[j] = pframe[j+hdrlen+8+plen];
	aes128k128d(key, ctr_preload, aes_out);
	bitwise_xor(aes_out, padded_buffer, chain_buffer);
	for (j = 0; j < 8; j++)
		pframe[payload_index++] = chain_buffer[j];
	return _SUCCESS;
}

u32 r8712_aes_encrypt(struct _adapter *padapter, u8 *pxmitframe)
{	/* exclude ICV */
	/* Intermediate Buffers */
	sint	curfragnum, length;
	u32	prwskeylen;
	u8	*pframe, *prwskey;
	struct	sta_info *stainfo;
	struct	pkt_attrib  *pattrib = &((struct xmit_frame *)
				       pxmitframe)->attrib;
	struct	xmit_priv *pxmitpriv = &padapter->xmitpriv;
	u32 res = _SUCCESS;

	if (((struct xmit_frame *)pxmitframe)->buf_addr == NULL)
		return _FAIL;
	pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + TXDESC_OFFSET;
	/* 4 start to encrypt each fragment */
	if ((pattrib->encrypt == _AES_)) {
		if (pattrib->psta)
			stainfo = pattrib->psta;
		else
			stainfo = r8712_get_stainfo(&padapter->stapriv,
				  &pattrib->ra[0]);
		if (stainfo != NULL) {
			prwskey = &stainfo->x_UncstKey.skey[0];
			prwskeylen = 16;
			for (curfragnum = 0; curfragnum < pattrib->nr_frags;
			     curfragnum++) {
				if ((curfragnum + 1) == pattrib->nr_frags) {\
					length = pattrib->last_txcmdsz -
						 pattrib->hdrlen -
						 pattrib->iv_len -
						 pattrib->icv_len;
					aes_cipher(prwskey, pattrib->
						  hdrlen, pframe, length);
				} else {
					length = pxmitpriv->frag_len -
						 pattrib->hdrlen -
						 pattrib->iv_len -
						 pattrib->icv_len ;
					aes_cipher(prwskey, pattrib->
						   hdrlen, pframe, length);
					pframe += pxmitpriv->frag_len;
					pframe = (u8 *)RND4((addr_t)(pframe));
				}
			}
		} else
			res = _FAIL;
	}
	return res;
}

static sint aes_decipher(u8 *key, uint	hdrlen,
			u8 *pframe, uint plen)
{
	static u8 message[MAX_MSG_SIZE];
	uint qc_exists, a4_exists, i, j, payload_remainder;
	uint num_blocks, payload_index;
	u8 pn_vector[6];
	u8 mic_iv[16];
	u8 mic_header1[16];
	u8 mic_header2[16];
	u8 ctr_preload[16];
	/* Intermediate Buffers */
	u8 chain_buffer[16];
	u8 aes_out[16];
	u8 padded_buffer[16];
	u8 mic[8];
	uint frtype  = GetFrameType(pframe);
	uint frsubtype  = GetFrameSubType(pframe);

	frsubtype = frsubtype >> 4;
	memset((void *)mic_iv, 0, 16);
	memset((void *)mic_header1, 0, 16);
	memset((void *)mic_header2, 0, 16);
	memset((void *)ctr_preload, 0, 16);
	memset((void *)chain_buffer, 0, 16);
	memset((void *)aes_out, 0, 16);
	memset((void *)padded_buffer, 0, 16);
	/* start to decrypt the payload */
	/*(plen including llc, payload and mic) */
	num_blocks = (plen - 8) / 16;
	payload_remainder = (plen-8) % 16;
	pn_vector[0] = pframe[hdrlen];
	pn_vector[1] = pframe[hdrlen+1];
	pn_vector[2] = pframe[hdrlen+4];
	pn_vector[3] = pframe[hdrlen+5];
	pn_vector[4] = pframe[hdrlen+6];
	pn_vector[5] = pframe[hdrlen+7];
	if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen ==  WLAN_HDR_A3_QOS_LEN))
		a4_exists = 0;
	else
		a4_exists = 1;
	if ((frtype == WIFI_DATA_CFACK) ||
	    (frtype == WIFI_DATA_CFPOLL) ||
	    (frtype == WIFI_DATA_CFACKPOLL)) {
		qc_exists = 1;
		if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
			hdrlen += 2;
		}  else if ((frsubtype == 0x08) ||
		   (frsubtype == 0x09) ||
		   (frsubtype == 0x0a) ||
		   (frsubtype == 0x0b)) {
			if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
				hdrlen += 2;
			qc_exists = 1;
	} else
		qc_exists = 0;
	/* now, decrypt pframe with hdrlen offset and plen long */
	payload_index = hdrlen + 8; /* 8 is for extiv */
	for (i = 0; i < num_blocks; i++) {
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      pframe, pn_vector, i + 1);
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);
		for (j = 0; j < 16; j++)
			pframe[payload_index++] = chain_buffer[j];
	}
	if (payload_remainder > 0) {  /* If short final block, pad it,*/
		/* encrypt it and copy the unpadded part back   */
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      pframe, pn_vector, num_blocks+1);
		for (j = 0; j < 16; j++)
			padded_buffer[j] = 0x00;
		for (j = 0; j < payload_remainder; j++)
			padded_buffer[j] = pframe[payload_index + j];
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, padded_buffer, chain_buffer);
		for (j = 0; j < payload_remainder; j++)
			pframe[payload_index++] = chain_buffer[j];
	}
	/* start to calculate the mic */
	memcpy((void *)message, pframe, (hdrlen + plen + 8));
	pn_vector[0] = pframe[hdrlen];
	pn_vector[1] = pframe[hdrlen+1];
	pn_vector[2] = pframe[hdrlen+4];
	pn_vector[3] = pframe[hdrlen+5];
	pn_vector[4] = pframe[hdrlen+6];
	pn_vector[5] = pframe[hdrlen+7];
	construct_mic_iv(mic_iv, qc_exists, a4_exists, message, plen-8,
			 pn_vector);
	construct_mic_header1(mic_header1, hdrlen, message);
	construct_mic_header2(mic_header2, message, a4_exists, qc_exists);
	payload_remainder = (plen - 8) % 16;
	num_blocks = (plen - 8) / 16;
	/* Find start of payload */
	payload_index = (hdrlen + 8);
	/* Calculate MIC */
	aes128k128d(key, mic_iv, aes_out);
	bitwise_xor(aes_out, mic_header1, chain_buffer);
	aes128k128d(key, chain_buffer, aes_out);
	bitwise_xor(aes_out, mic_header2, chain_buffer);
	aes128k128d(key, chain_buffer, aes_out);
	for (i = 0; i < num_blocks; i++) {
		bitwise_xor(aes_out, &message[payload_index], chain_buffer);
		payload_index += 16;
		aes128k128d(key, chain_buffer, aes_out);
	}
	/* Add on the final payload block if it needs padding */
	if (payload_remainder > 0) {
		for (j = 0; j < 16; j++)
			padded_buffer[j] = 0x00;
		for (j = 0; j < payload_remainder; j++)
			padded_buffer[j] = message[payload_index++];
		bitwise_xor(aes_out, padded_buffer, chain_buffer);
		aes128k128d(key, chain_buffer, aes_out);
	}
	for (j = 0 ; j < 8; j++)
		mic[j] = aes_out[j];
	/* Insert MIC into payload */
	for (j = 0; j < 8; j++)
		message[payload_index+j] = mic[j];
	payload_index = hdrlen + 8;
	for (i = 0; i < num_blocks; i++) {
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      message, pn_vector, i + 1);
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, &message[payload_index], chain_buffer);
		for (j = 0; j < 16; j++)
			message[payload_index++] = chain_buffer[j];
	}
	if (payload_remainder > 0) { /* If short final block, pad it,*/
				     /* encrypt and copy unpadded part back */
		construct_ctr_preload(ctr_preload, a4_exists, qc_exists,
				      message, pn_vector, num_blocks+1);
		for (j = 0; j < 16; j++)
			padded_buffer[j] = 0x00;
		for (j = 0; j < payload_remainder; j++)
			padded_buffer[j] = message[payload_index + j];
		aes128k128d(key, ctr_preload, aes_out);
		bitwise_xor(aes_out, padded_buffer, chain_buffer);
		for (j = 0; j < payload_remainder; j++)
			message[payload_index++] = chain_buffer[j];
	}
	/* Encrypt the MIC */
	construct_ctr_preload(ctr_preload, a4_exists, qc_exists, message,
			      pn_vector, 0);
	for (j = 0; j < 16; j++)
		padded_buffer[j] = 0x00;
	for (j = 0; j < 8; j++)
		padded_buffer[j] = message[j + hdrlen + plen];
	aes128k128d(key, ctr_preload, aes_out);
	bitwise_xor(aes_out, padded_buffer, chain_buffer);
	for (j = 0; j < 8; j++)
		message[payload_index++] = chain_buffer[j];
	/* compare the mic */
	return _SUCCESS;
}

u32 r8712_aes_decrypt(struct _adapter *padapter, u8 *precvframe)
{	/* exclude ICV */
	/* Intermediate Buffers */
	sint		length;
	u32	prwskeylen;
	u8	*pframe, *prwskey, *iv, idx;
	struct	sta_info *stainfo;
	struct	rx_pkt_attrib *prxattrib = &((union recv_frame *)
					   precvframe)->u.hdr.attrib;
	struct	security_priv *psecuritypriv = &padapter->securitypriv;

	pframe = (unsigned char *)((union recv_frame*)precvframe)->
		 u.hdr.rx_data;
	/* 4 start to encrypt each fragment */
	if ((prxattrib->encrypt == _AES_)) {
		stainfo = r8712_get_stainfo(&padapter->stapriv,
					    &prxattrib->ta[0]);
		if (stainfo != NULL) {
			if (IS_MCAST(prxattrib->ra)) {
				iv = pframe+prxattrib->hdrlen;
				idx = iv[3];
				prwskey = &psecuritypriv->XGrpKey[
					  ((idx >> 6) & 0x3) - 1].skey[0];
				if (psecuritypriv->binstallGrpkey == false)
					return _FAIL;

			} else
				prwskey = &stainfo->x_UncstKey.skey[0];
			prwskeylen = 16;
			length = ((union recv_frame *)precvframe)->
				 u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len;
			aes_decipher(prwskey, prxattrib->hdrlen, pframe,
				     length);
		} else
			return _FAIL;
	}
	return _SUCCESS;
}

void r8712_use_tkipkey_handler(void *FunctionContext)
{
	struct _adapter *padapter = (struct _adapter *)FunctionContext;

	padapter->securitypriv.busetkipkey = true;
}