/******************************************************************************
 *
 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
 *
 * 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
 *
 *
 ******************************************************************************/
#define  _RTW_SECURITY_C_

#include <drv_conf.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;
_func_enter_;
	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;
	}
_func_exit_;
}
static u32 arcfour_byte(	struct arc4context	*parc4ctx)
{
	u32 x;
	u32 y;
	u32 sx, sy;
	u8 * state;
_func_enter_;
	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;
_func_exit_;
	return state[(sx + sy) & 0xff];
}

static void arcfour_encrypt(	struct arc4context	*parc4ctx,
	u8 * dest,
	u8 * src,
	u32 len)
{
	u32	i;
_func_enter_;
	for (i = 0; i < len; i++)
		dest[i] = src[i] ^ (unsigned char)arcfour_byte(parc4ctx);
_func_exit_;
}

static int bcrc32initialized = 0;
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)
{
_func_enter_;
	if (bcrc32initialized == 1)
		goto exit;
	else{
		int 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;
	}
exit:
_func_exit_;
}

static u32 getcrc32(u8 *buf, int len)
{
	u8 *p;
	u32  crc;
_func_enter_;
	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);
	}
_func_exit_;
	return ~crc;    /* transmit complement, per CRC-32 spec */
}

/*
	Need to consider the fragment  situation
*/
void rtw_wep_encrypt(struct rtw_adapter *padapter, u8 *pxmitframe)
{																	/*  exclude ICV */

	unsigned char	crc[4];
	struct arc4context	 mycontext;

	int	curfragnum,length;
	u32	keylength;

	u8	*pframe, *payload,*iv;    /* wepkey */
	u8	wepkey[16];
	u8   hw_hdr_offset=0;
	struct	pkt_attrib	 *pattrib = &((struct xmit_frame*)pxmitframe)->attrib;
	struct	security_priv	*psecuritypriv=&padapter->securitypriv;
	struct	xmit_priv		*pxmitpriv=&padapter->xmitpriv;

_func_enter_;

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

#ifdef CONFIG_USB_TX_AGGREGATION
	hw_hdr_offset = TXDESC_SIZE +
		 (((struct xmit_frame*)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
#else
	#ifdef CONFIG_TX_EARLY_MODE
	hw_hdr_offset = TXDESC_OFFSET+EARLY_MODE_INFO_SIZE;
	#else
	hw_hdr_offset = TXDESC_OFFSET;
	#endif
#endif

	pframe = ((struct xmit_frame*)pxmitframe)->buf_addr + hw_hdr_offset;

	/* start to encrypt each fragment */
	if((pattrib->encrypt==_WEP40_)||(pattrib->encrypt==_WEP104_))
	{
		keylength=psecuritypriv->dot11DefKeylen[psecuritypriv->dot11PrivacyKeyIndex];

		for(curfragnum=0;curfragnum<pattrib->nr_frags;curfragnum++)
		{
			iv=pframe+pattrib->hdrlen;
			memcpy(&wepkey[0], iv, 3);
			memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0],keylength);
			payload=pframe+pattrib->iv_len+pattrib->hdrlen;

			if((curfragnum+1)==pattrib->nr_frags)
			{	/* 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, 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((unsigned long)(pframe));

			}

		}

	}

_func_exit_;
}

void rtw_wep_decrypt(struct rtw_adapter  *padapter, u8 *precvframe)
{
	/*  exclude ICV */
	u8	crc[4];
	struct arc4context	 mycontext;
	int	length;
	u32	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;

_func_enter_;

	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); */
		keyindex = prxattrib->key_index;
		keylength=psecuritypriv->dot11DefKeylen[keyindex];
		memcpy(&wepkey[0], iv, 3);
		/* memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[psecuritypriv->dot11PrivacyKeyIndex].skey[0],keylength); */
		memcpy(&wepkey[3], &psecuritypriv->dot11DefKey[keyindex].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)=le32_to_cpu(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])
		{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_wep_decrypt:icv error crc[3](%x)!=payload[length-1](%x) || crc[2](%x)!=payload[length-2](%x) || crc[1](%x)!=payload[length-3](%x) || crc[0](%x)!=payload[length-4](%x)\n",
						crc[3],payload[length-1],crc[2],payload[length-2],crc[1],payload[length-3],crc[0],payload[length-4]));
		}

	}

_func_exit_;

	return;
}

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

static u32 secmicgetuint32( u8 * p )
/*  Convert from Byte[] to u32 in a portable way */
{
	s32 i;
	u32 res = 0;
_func_enter_;
	for( i=0; i<4; i++ )
	{
		res |= ((u32)(*p++)) << (8*i);
	}
_func_exit_;
	return res;
}

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

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

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

void rtw_secmicappendbyte(struct mic_data *pmicdata, u8 b )
{
_func_enter_;
	/*  Append the byte to our word-sized buffer */
	pmicdata->M |= ((unsigned long)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;
	}
_func_exit_;
}

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

void rtw_secgetmic(struct mic_data *pmicdata, u8 * dst )
{
_func_enter_;
	/*  Append the minimum padding */
	rtw_secmicappendbyte(pmicdata, 0x5a );
	rtw_secmicappendbyte(pmicdata, 0 );
	rtw_secmicappendbyte(pmicdata, 0 );
	rtw_secmicappendbyte(pmicdata, 0 );
	rtw_secmicappendbyte(pmicdata, 0 );
	/*  and then zeroes until the length is a multiple of 4 */
	while( pmicdata->nBytesInM != 0 )
	{
		rtw_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);
_func_exit_;
}

void rtw_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};
_func_enter_;
	rtw_secmicsetkey(&micdata, key);
	priority[0]=pri;

	/* Michael MIC pseudo header: DA, SA, 3 x 0, Priority */
	if(header[1]&1){   /* ToDS==1 */
			rtw_secmicappend(&micdata, &header[16], 6);  /* DA */
		if(header[1]&2)  /* From Ds==1 */
			rtw_secmicappend(&micdata, &header[24], 6);
		else
			rtw_secmicappend(&micdata, &header[10], 6);
	}
	else{	/* ToDS==0 */
		rtw_secmicappend(&micdata, &header[4], 6);   /* DA */
		if(header[1]&2)  /* From Ds==1 */
			rtw_secmicappend(&micdata, &header[16], 6);
		else
			rtw_secmicappend(&micdata, &header[10], 6);

	}
	rtw_secmicappend(&micdata, &priority[0], 4);

	rtw_secmicappend(&micdata, data, data_len);

	rtw_secgetmic(&micdata,mic_code);
_func_exit_;
}

/* 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 of table 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)
{
	int  i;
_func_enter_;
	/* 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 operation here 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" */
        }
_func_exit_;
}

/*
**********************************************************************
* 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)
{
	int  i;
	u16 PPK[6];                          /* temporary key for mixing    */
_func_enter_;
	/* 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]);
	}
_func_exit_;
}

/* The hlen isn't include the IV */
u32	rtw_tkip_encrypt(struct rtw_adapter *padapter, u8 *pxmitframe)
{																	/*  exclude ICV */
	u16	pnl;
	u32	pnh;
	u8	rc4key[16];
	u8   ttkey[16];
	u8	crc[4];
	u8   hw_hdr_offset = 0;
	struct arc4context mycontext;
	int			curfragnum,length;
	u32	prwskeylen;

	u8	*pframe, *payload,*iv,*prwskey;
	union pn48 dot11txpn;
	struct	sta_info		*stainfo;
	struct	pkt_attrib	 *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
	struct	security_priv	*psecuritypriv=&padapter->securitypriv;
	struct	xmit_priv		*pxmitpriv=&padapter->xmitpriv;
	u32	res=_SUCCESS;
_func_enter_;

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

#ifdef CONFIG_USB_TX_AGGREGATION
	hw_hdr_offset = TXDESC_SIZE +
		 (((struct xmit_frame*)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
#else
	#ifdef CONFIG_TX_EARLY_MODE
	hw_hdr_offset = TXDESC_OFFSET+EARLY_MODE_INFO_SIZE;
	#else
	hw_hdr_offset = TXDESC_OFFSET;
	#endif
#endif

	pframe = ((struct xmit_frame*)pxmitframe)->buf_addr + hw_hdr_offset;
	/* 4 start to encrypt each fragment */
	if(pattrib->encrypt==_TKIP_){

		if(pattrib->psta)
		{
			stainfo = pattrib->psta;
		}
		else
		{
			DBG_8723A("%s, call rtw_get_stainfo()\n", __func__);
			stainfo=rtw_get_stainfo(&padapter->stapriv ,&pattrib->ra[0] );
		}

		if (stainfo!=NULL){

			if(!(stainfo->state &_FW_LINKED))
			{
				DBG_8723A("%s, psta->state(0x%x) != _FW_LINKED\n", __func__, stainfo->state);
				return _FAIL;
			}

			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_tkip_encrypt: stainfo!=NULL!!!\n"));

			if(is_multicast_ether_addr(pattrib->ra))
				prwskey=psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey;
			else
				prwskey=&stainfo->dot118021x_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, dot11txpn);

				pnl=(u16)(dot11txpn.val);
				pnh=(u32)(dot11txpn.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;
					RT_TRACE(_module_rtl871x_security_c_,_drv_info_,("pattrib->iv_len =%x, pattrib->icv_len =%x\n", pattrib->iv_len,pattrib->icv_len));
					*((u32 *)crc)=cpu_to_le32(getcrc32(payload,length));/* modified by Amy*/

					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));/* modified by Amy*/
					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((unsigned long)(pframe));

				}
			}

		}
		else{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_tkip_encrypt: stainfo==NULL!!!\n"));
                        DBG_8723A("%s, psta==NUL\n", __func__);
			res=_FAIL;
		}

	}
_func_exit_;
	return res;
}

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

	u8	*pframe, *payload,*iv,*prwskey;
	union pn48 dot11txpn;
	struct	sta_info		*stainfo;
	struct	rx_pkt_attrib	 *prxattrib = &((union recv_frame *)precvframe)->u.hdr.attrib;
	struct	security_priv	*psecuritypriv=&padapter->securitypriv;
/*	struct	recv_priv		*precvpriv=&padapter->recvpriv; */
	u32		res=_SUCCESS;

_func_enter_;

	pframe=(unsigned char *)((union recv_frame*)precvframe)->u.hdr.rx_data;

	/* 4 start to decrypt recvframe */
	if(prxattrib->encrypt==_TKIP_){

		stainfo=rtw_get_stainfo(&padapter->stapriv ,&prxattrib->ta[0] );
		if (stainfo!=NULL){

			if(is_multicast_ether_addr(prxattrib->ra)) {
				if(psecuritypriv->binstallGrpkey==_FALSE) {
					res=_FAIL;
					DBG_8723A("%s:rx bc/mc packets,but didn't install group key!!!!!!!!!!\n",__FUNCTION__);
					goto exit;
				}
				/* DBG_8723A("rx bc/mc packets, to perform sw rtw_tkip_decrypt\n"); */
				/* prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey; */
				prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
				prwskeylen=16;
			} else {
			        RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_tkip_decrypt: stainfo!=NULL!!!\n"));
				prwskey=&stainfo->dot118021x_UncstKey.skey[0];
				prwskeylen=16;
			}

			iv=pframe+prxattrib->hdrlen;
			payload=pframe+prxattrib->iv_len+prxattrib->hdrlen;
			length= ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len;

			GET_TKIP_PN(iv, dot11txpn);

			pnl=(u16)(dot11txpn.val);
			pnh=(u32)(dot11txpn.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)=le32_to_cpu(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])
			{
			    RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_wep_decrypt:icv error crc[3](%x)!=payload[length-1](%x) || crc[2](%x)!=payload[length-2](%x) || crc[1](%x)!=payload[length-3](%x) || crc[0](%x)!=payload[length-4](%x)\n",
						crc[3],payload[length-1],crc[2],payload[length-2],crc[1],payload[length-3],crc[0],payload[length-4]));
				res=_FAIL;
			}

		}
		else{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_tkip_decrypt: stainfo==NULL!!!\n"));
			res=_FAIL;
		}

	}
_func_exit_;
exit:
	return res;
}

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

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

  static  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
    };

/*****************************/
/**** Function Prototypes ****/
/*****************************/

static void bitwise_xor(u8 *ina, u8 *inb, u8 *out);
static void construct_mic_iv(
                        u8 *mic_header1,
                        int qc_exists,
                        int a4_exists,
                        u8 *mpdu,
                        uint payload_length,
                        u8 * pn_vector);
static void construct_mic_header1(
                        u8 *mic_header1,
                        int header_length,
                        u8 *mpdu);
static void construct_mic_header2(
                    u8 *mic_header2,
                    u8 *mpdu,
                    int a4_exists,
                    int qc_exists);
static void construct_ctr_preload(
                        u8 *ctr_preload,
                        int a4_exists,
                        int qc_exists,
                        u8 *mpdu,
                        u8 *pn_vector,
                        int c);
static void xor_128(u8 *a, u8 *b, u8 *out);
static void xor_32(u8 *a, u8 *b, u8 *out);
static u8 sbox(u8 a);
static void next_key(u8 *key, int round);
static void byte_sub(u8 *in, u8 *out);
static void shift_row(u8 *in, u8 *out);
static void mix_column(u8 *in, u8 *out);
static void add_round_key( u8 *shiftrow_in,
                    u8 *mcol_in,
                    u8 *block_in,
                    int round,
                    u8 *out);
static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext);

/****************************************/
/* aes128k128d()                        */
/* Performs a 128 bit AES encrypt with  */
/* 128 bit data.                        */
/****************************************/
static void xor_128(u8 *a, u8 *b, u8 *out)
{
    int i;
_func_enter_;
    for (i=0;i<16; i++)
    {
        out[i] = a[i] ^ b[i];
    }
_func_exit_;
}

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

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

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

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

static void shift_row(u8 *in, u8 *out)
{
_func_enter_;
    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];
_func_exit_;
}

static void mix_column(u8 *in, u8 *out)
{
    int 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];
_func_enter_;
    for (i=0 ; i<4; i++)
    {
        if ((in[i] & 0x80)== 0x80)
            add1b[i] = 0x1b;
        else
            add1b[i] = 0x00;
    }

    swap_halfs[0] = in[2];    /* Swap halfs */
    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);
_func_exit_;
}

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

/************************************************/
/* construct_mic_iv()                           */
/* Builds the MIC IV from header fields and PN  */
/************************************************/
static void construct_mic_iv(
                        u8 *mic_iv,
                        int qc_exists,
                        int a4_exists,
                        u8 *mpdu,
                        uint payload_length,
                        u8 *pn_vector
                        )
{
    int i;
_func_enter_;
    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];                    /* mic_iv[2:7] = A2[0:5] = mpdu[10:15] */
    #ifdef CONSISTENT_PN_ORDER
        for (i = 8; i < 14; i++)
            mic_iv[i] = pn_vector[i - 8];           /* mic_iv[8:13] = PN[0:5] */
    #else
        for (i = 8; i < 14; i++)
            mic_iv[i] = pn_vector[13 - i];          /* mic_iv[8:13] = PN[5:0] */
    #endif
    mic_iv[14] = (unsigned char) (payload_length / 256);
    mic_iv[15] = (unsigned char) (payload_length % 256);
_func_exit_;
}

/************************************************/
/* construct_mic_header1()                      */
/* Builds the first MIC header block from       */
/* header fields.                               */
/************************************************/
static void construct_mic_header1(
                        u8 *mic_header1,
                        int header_length,
                        u8 *mpdu
                        )
{
_func_enter_;
    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 */
    mic_header1[3] = mpdu[1] & 0xc7;    /* Mute retry, more data and pwr mgt bits */
    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];
_func_exit_;
}

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

_func_exit_;
}

/************************************************/
/* construct_mic_header2()                      */
/* Builds the last MIC header block from        */
/* header fields.                               */
/************************************************/
static void construct_ctr_preload(
                        u8 *ctr_preload,
                        int a4_exists,
                        int qc_exists,
                        u8 *mpdu,
                        u8 *pn_vector,
                        int c
                        )
{
    int i = 0;
_func_enter_;
    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;   /* QoC_Control */
    if (qc_exists && !a4_exists)
		ctr_preload[1] = mpdu[24] & 0x0f;

    for (i = 2; i < 8; i++)
        ctr_preload[i] = mpdu[i + 8];                       /* ctr_preload[2:7] = A2[0:5] = mpdu[10:15] */
    #ifdef CONSISTENT_PN_ORDER
      for (i = 8; i < 14; i++)
            ctr_preload[i] =    pn_vector[i - 8];           /* ctr_preload[8:13] = PN[0:5] */
    #else
      for (i = 8; i < 14; i++)
            ctr_preload[i] =    pn_vector[13 - i];          /* ctr_preload[8:13] = PN[5:0] */
    #endif
    ctr_preload[14] =  (unsigned char) (c / 256); /* Ctr */
    ctr_preload[15] =  (unsigned char) (c % 256);
_func_exit_;
}

/************************************/
/* bitwise_xor()                    */
/* A 128 bit, bitwise exclusive or  */
/************************************/
static void bitwise_xor(u8 *ina, u8 *inb, u8 *out)
{
    int i;
_func_enter_;
    for (i=0; i<16; i++)
    {
        out[i] = ina[i] ^ inb[i];
    }
_func_exit_;
}

static int aes_cipher(u8 *key, uint	hdrlen,
			u8 *pframe, uint plen)
{
	uint	qc_exists, a4_exists, i, j, payload_remainder,
		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	offset = 0; */
	uint	frtype  = GetFrameType(pframe);
	uint	frsubtype  = GetFrameSubType(pframe);

_func_enter_;
	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,	 /* message, */
                        plen,
                        pn_vector
                        );

    construct_mic_header1(
                            mic_header1,
                            hdrlen,
                            pframe	/* message */
                            );
    construct_mic_header2(
                            mic_header2,
                            pframe,	/* message, */
                            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);/* 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] = pframe[payload_index++];/* 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++)
	pframe[payload_index+j] = mic[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,
                                pframe,	/* message, */
                                pn_vector,
                                i+1);
        aes128k128d(key, ctr_preload, aes_out);
        bitwise_xor(aes_out, &pframe[payload_index], chain_buffer);/* bitwise_xor(aes_out, &message[payload_index], chain_buffer); */
        for (j=0; j<16;j++) pframe[payload_index++] = chain_buffer[j];/* for (j=0; j<16;j++) message[payload_index++] = chain_buffer[j]; */
    }

    if (payload_remainder > 0)          /* If there is a short final block, then pad it,*/
    {                                   /* encrypt it and copy the unpadded part back   */
        construct_ctr_preload(
                                ctr_preload,
                                a4_exists,
                                qc_exists,
                                pframe,	/* 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] = pframe[payload_index+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++) pframe[payload_index++] = chain_buffer[j];/* 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,
                        pframe,	/* message, */
                        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];/* padded_buffer[j] = message[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];/* for (j=0; j<8;j++) message[payload_index++] = chain_buffer[j]; */
_func_exit_;
	return _SUCCESS;
}

u32	rtw_aes_encrypt(struct rtw_adapter *padapter, u8 *pxmitframe)
{	/*  exclude ICV */

	/*static*/
/*	unsigned char	message[MAX_MSG_SIZE]; */

	/* Intermediate Buffers */
	int	curfragnum,length;
	u32	prwskeylen;
	u8	*pframe,*prwskey;	/*  *payload,*iv */
	u8   hw_hdr_offset = 0;
	struct	sta_info		*stainfo;
	struct	pkt_attrib	 *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
	struct	security_priv	*psecuritypriv=&padapter->securitypriv;
	struct	xmit_priv		*pxmitpriv=&padapter->xmitpriv;

/*	uint	offset = 0; */
	u32 res=_SUCCESS;
_func_enter_;

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

#ifdef CONFIG_USB_TX_AGGREGATION
	hw_hdr_offset = TXDESC_SIZE +
		 (((struct xmit_frame*)pxmitframe)->pkt_offset * PACKET_OFFSET_SZ);
#else
	#ifdef CONFIG_TX_EARLY_MODE
	hw_hdr_offset = TXDESC_OFFSET+EARLY_MODE_INFO_SIZE;
	#else
	hw_hdr_offset = TXDESC_OFFSET;
	#endif
#endif

	pframe = ((struct xmit_frame*)pxmitframe)->buf_addr + hw_hdr_offset;

	/* 4 start to encrypt each fragment */
	if((pattrib->encrypt==_AES_)){

		if(pattrib->psta)
		{
			stainfo = pattrib->psta;
		}
		else
		{
			DBG_8723A("%s, call rtw_get_stainfo()\n", __func__);
			stainfo=rtw_get_stainfo(&padapter->stapriv ,&pattrib->ra[0] );
		}

		if (stainfo!=NULL){

			if(!(stainfo->state &_FW_LINKED))
			{
				DBG_8723A("%s, psta->state(0x%x) != _FW_LINKED\n", __func__, stainfo->state);
				return _FAIL;
			}

			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_aes_encrypt: stainfo!=NULL!!!\n"));

			if(is_multicast_ether_addr(pattrib->ra))
				prwskey=psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey;
			else
				prwskey=&stainfo->dot118021x_UncstKey.skey[0];

#ifdef CONFIG_TDLS	/* swencryption */
			{
				struct	sta_info		*ptdls_sta;
				ptdls_sta=rtw_get_stainfo(&padapter->stapriv ,&pattrib->dst[0] );
				if((ptdls_sta != NULL) && (ptdls_sta->tdls_sta_state & TDLS_LINKED_STATE) )
				{
					DBG_8723A("[%s] for tdls link\n", __FUNCTION__);
					prwskey=&ptdls_sta->tpk.tk[0];
				}
			}
#endif /* CONFIG_TDLS */

			prwskeylen=16;

			for(curfragnum=0;curfragnum<pattrib->nr_frags;curfragnum++){

				if((curfragnum+1)==pattrib->nr_frags){	/* 4 the last fragment */
					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((unsigned long)(pframe));

				}
			}

		}
		else{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_aes_encrypt: stainfo==NULL!!!\n"));
                        DBG_8723A("%s, psta==NUL\n", __func__);
			res=_FAIL;
		}

	}

_func_exit_;
		return res;
}

static int 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,
			num_blocks, payload_index;
	int res = _SUCCESS;
	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	offset = 0; */
	uint	frtype  = GetFrameType(pframe);
	uint	frsubtype  = GetFrameSubType(pframe);
_func_enter_;
	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 */

	num_blocks = (plen-8) / 16; /* plen including llc, payload_length and mic ) */

	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 there is a short final block, then 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 */
	if((hdrlen +plen+8) <= MAX_MSG_SIZE)
		memcpy((void *)message, pframe, (hdrlen +plen+8)); /* 8 is for ext iv len */

	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 there is a short final block, then pad it,*/
    {                                   /* encrypt it and copy the 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+8+plen-8];
    }

    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 */
	for(i=0;i<8;i++){
		if(pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
		{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("aes_decipher:mic check error mic[%d]: pframe(%x) != message(%x) \n",
						i,pframe[hdrlen+8+plen-8+i],message[hdrlen+8+plen-8+i]));
			DBG_8723A("aes_decipher:mic check error mic[%d]: pframe(%x) != message(%x) \n",
						i,pframe[hdrlen+8+plen-8+i],message[hdrlen+8+plen-8+i]);
			res = _FAIL;
		}
	}
_func_exit_;
	return res;
}

u32	rtw_aes_decrypt(struct rtw_adapter *padapter, u8 *precvframe)
{	/*  exclude ICV */

	/*static*/
/*	unsigned char	message[MAX_MSG_SIZE]; */

	/* Intermediate Buffers */

	int		length;
	u8	*pframe,*prwskey;	/*  *payload,*iv */
	struct	sta_info		*stainfo;
	struct	rx_pkt_attrib	 *prxattrib = &((union recv_frame *)precvframe)->u.hdr.attrib;
	struct	security_priv	*psecuritypriv=&padapter->securitypriv;
/*	struct	recv_priv		*precvpriv=&padapter->recvpriv; */
	u32	res=_SUCCESS;
_func_enter_;
	pframe=(unsigned char *)((union recv_frame*)precvframe)->u.hdr.rx_data;
	/* 4 start to encrypt each fragment */
	if((prxattrib->encrypt==_AES_)){

		stainfo=rtw_get_stainfo(&padapter->stapriv ,&prxattrib->ta[0] );
		if (stainfo!=NULL){
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_aes_decrypt: stainfo!=NULL!!!\n"));

			if(is_multicast_ether_addr(prxattrib->ra)) {
				/* in concurrent we should use sw descrypt in group key, so we remove this message */
				/* DBG_8723A("rx bc/mc packets, to perform sw rtw_aes_decrypt\n"); */
				/* prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey; */
				if(psecuritypriv->binstallGrpkey==_FALSE)
				{
					res=_FAIL;
					DBG_8723A("%s:rx bc/mc packets,but didn't install group key!!!!!!!!!!\n",__FUNCTION__);
					goto exit;
				}
				prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
				if(psecuritypriv->dot118021XGrpKeyid != prxattrib->key_index)
				{
					DBG_8723A("not match packet_index=%d, install_index=%d \n"
					, prxattrib->key_index, psecuritypriv->dot118021XGrpKeyid);
					res=_FAIL;
					goto exit;
				}
			}
			else
			{
				prwskey=&stainfo->dot118021x_UncstKey.skey[0];
			}

			length= ((union recv_frame *)precvframe)->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len;

			res= aes_decipher(prwskey,prxattrib->hdrlen,pframe, length);

		}
		else{
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("rtw_aes_encrypt: stainfo==NULL!!!\n"));
			res=_FAIL;
		}

	}
_func_exit_;
exit:
	return res;
}
/* compress 512-bits */
static int sha256_compress(struct sha256_state *md, unsigned char *buf)
{
	u32 S[8], W[64], t0, t1;
	u32 t;
	int i;

	/* copy state into S */
	for (i = 0; i < 8; i++) {
		S[i] = md->state[i];
	}

	/* copy the state into 512-bits into W[0..15] */
	for (i = 0; i < 16; i++)
		W[i] = WPA_GET_BE32(buf + (4 * i));

	/* fill W[16..63] */
	for (i = 16; i < 64; i++) {
		W[i] = Gamma1(W[i - 2]) + W[i - 7] + Gamma0(W[i - 15]) +
			W[i - 16];
	}

	/* Compress */
#define RND(a,b,c,d,e,f,g,h,i)                          \
	t0 = h + Sigma1(e) + Ch(e, f, g) + K[i] + W[i];	\
	t1 = Sigma0(a) + Maj(a, b, c);			\
	d += t0;					\
	h  = t0 + t1;

	for (i = 0; i < 64; ++i) {
		RND(S[0], S[1], S[2], S[3], S[4], S[5], S[6], S[7], i);
		t = S[7]; S[7] = S[6]; S[6] = S[5]; S[5] = S[4];
		S[4] = S[3]; S[3] = S[2]; S[2] = S[1]; S[1] = S[0]; S[0] = t;
	}

	/* feedback */
	for (i = 0; i < 8; i++) {
		md->state[i] = md->state[i] + S[i];
	}
	return 0;
}

/* Initialize the hash state */
static void sha256_init(struct sha256_state *md)
{
	md->curlen = 0;
	md->length = 0;
	md->state[0] = 0x6A09E667UL;
	md->state[1] = 0xBB67AE85UL;
	md->state[2] = 0x3C6EF372UL;
	md->state[3] = 0xA54FF53AUL;
	md->state[4] = 0x510E527FUL;
	md->state[5] = 0x9B05688CUL;
	md->state[6] = 0x1F83D9ABUL;
	md->state[7] = 0x5BE0CD19UL;
}

/**
   Process a block of memory though the hash
   @param md     The hash state
   @param in     The data to hash
   @param inlen  The length of the data (octets)
   @return CRYPT_OK if successful
*/
static int sha256_process(struct sha256_state *md, unsigned char *in,
			  unsigned long inlen)
{
	unsigned long n;
#define block_size 64

	if (md->curlen > sizeof(md->buf))
		return -1;

	while (inlen > 0) {
		if (md->curlen == 0 && inlen >= block_size) {
			if (sha256_compress(md, (unsigned char *) in) < 0)
				return -1;
			md->length += block_size * 8;
			in += block_size;
			inlen -= block_size;
		} else {
			n = MIN(inlen, (block_size - md->curlen));
			memcpy(md->buf + md->curlen, in, n);
			md->curlen += n;
			in += n;
			inlen -= n;
			if (md->curlen == block_size) {
				if (sha256_compress(md, md->buf) < 0)
					return -1;
				md->length += 8 * block_size;
				md->curlen = 0;
			}
		}
	}

	return 0;
}

/**
   Terminate the hash to get the digest
   @param md  The hash state
   @param out [out] The destination of the hash (32 bytes)
   @return CRYPT_OK if successful
*/
static int sha256_done(struct sha256_state *md, unsigned char *out)
{
	int i;

	if (md->curlen >= sizeof(md->buf))
		return -1;

	/* increase the length of the message */
	md->length += md->curlen * 8;

	/* append the '1' bit */
	md->buf[md->curlen++] = (unsigned char) 0x80;

	/* if the length is currently above 56 bytes we append zeros
	 * then compress.  Then we can fall back to padding zeros and length
	 * encoding like normal.
	 */
	if (md->curlen > 56) {
		while (md->curlen < 64) {
			md->buf[md->curlen++] = (unsigned char) 0;
		}
		sha256_compress(md, md->buf);
		md->curlen = 0;
	}

	/* pad upto 56 bytes of zeroes */
	while (md->curlen < 56) {
		md->buf[md->curlen++] = (unsigned char) 0;
	}

	/* store length */
	WPA_PUT_BE64(md->buf + 56, md->length);
	sha256_compress(md, md->buf);

	/* copy output */
	for (i = 0; i < 8; i++)
		WPA_PUT_BE32(out + (4 * i), md->state[i]);

	return 0;
}

/**
 * sha256_vector - SHA256 hash for data vector
 * @num_elem: Number of elements in the data vector
 * @addr: Pointers to the data areas
 * @len: Lengths of the data blocks
 * @mac: Buffer for the hash
 * Returns: 0 on success, -1 of failure
 */
static int sha256_vector(size_t num_elem, u8 *addr[], size_t *len,
		  u8 *mac)
{
	struct sha256_state ctx;
	size_t i;

	sha256_init(&ctx);
	for (i = 0; i < num_elem; i++)
		if (sha256_process(&ctx, addr[i], len[i]))
			return -1;
	if (sha256_done(&ctx, mac))
		return -1;
	return 0;
}

static u8 os_strlen(const char *s)
{
	const char *p = s;
	while (*p)
		p++;
	return p - s;
}

static int os_memcmp(void *s1, void *s2, u8 n)
{
	unsigned char *p1 = s1, *p2 = s2;

	if (n == 0)
		return 0;

	while (*p1 == *p2) {
		p1++;
		p2++;
		n--;
		if (n == 0)
			return 0;
	}

	return *p1 - *p2;
}

/**
 * hmac_sha256_vector - HMAC-SHA256 over data vector (RFC 2104)
 * @key: Key for HMAC operations
 * @key_len: Length of the key in bytes
 * @num_elem: Number of elements in the data vector
 * @addr: Pointers to the data areas
 * @len: Lengths of the data blocks
 * @mac: Buffer for the hash (32 bytes)
 */
static void hmac_sha256_vector(u8 *key, size_t key_len, size_t num_elem,
			u8 *addr[], size_t *len, u8 *mac)
{
	unsigned char k_pad[64]; /* padding - key XORd with ipad/opad */
	unsigned char tk[32];
	u8 *_addr[6];
	size_t _len[6], i;

	if (num_elem > 5) {
		/*
		 * Fixed limit on the number of fragments to avoid having to
		 * allocate memory (which could fail).
		 */
		return;
	}

        /* if key is longer than 64 bytes reset it to key = SHA256(key) */
        if (key_len > 64) {
		sha256_vector(1, &key, &key_len, tk);
		key = tk;
		key_len = 32;
        }

	/* the HMAC_SHA256 transform looks like:
	 *
	 * SHA256(K XOR opad, SHA256(K XOR ipad, text))
	 *
	 * where K is an n byte key
	 * ipad is the byte 0x36 repeated 64 times
	 * opad is the byte 0x5c repeated 64 times
	 * and text is the data being protected */

	/* start out by storing key in ipad */
	memset(k_pad, 0, sizeof(k_pad));
	memcpy(k_pad, key, key_len);
	/* XOR key with ipad values */
	for (i = 0; i < 64; i++)
		k_pad[i] ^= 0x36;

	/* perform inner SHA256 */
	_addr[0] = k_pad;
	_len[0] = 64;
	for (i = 0; i < num_elem; i++) {
		_addr[i + 1] = addr[i];
		_len[i + 1] = len[i];
	}
	sha256_vector(1 + num_elem, _addr, _len, mac);

	memset(k_pad, 0, sizeof(k_pad));
	memcpy(k_pad, key, key_len);
	/* XOR key with opad values */
	for (i = 0; i < 64; i++)
		k_pad[i] ^= 0x5c;

	/* perform outer SHA256 */
	_addr[0] = k_pad;
	_len[0] = 64;
	_addr[1] = mac;
	_len[1] = 32;
	sha256_vector(2, _addr, _len, mac);
}
/**
 * sha256_prf - SHA256-based Pseudo-Random Function (IEEE 802.11r, 8.5.1.5.2)
 * @key: Key for PRF
 * @key_len: Length of the key in bytes
 * @label: A unique label for each purpose of the PRF
 * @data: Extra data to bind into the key
 * @data_len: Length of the data
 * @buf: Buffer for the generated pseudo-random key
 * @buf_len: Number of bytes of key to generate
 *
 * This function is used to derive new, cryptographically separate keys from a
 * given key.
 */
static void sha256_prf(u8 *key, size_t key_len, char *label,
		u8 *data, size_t data_len, u8 *buf, size_t buf_len)
{
	u16 counter = 1;
	size_t pos, plen;
	u8 hash[SHA256_MAC_LEN];
	u8 *addr[4];
	size_t len[4];
	u8 counter_le[2], length_le[2];

	addr[0] = counter_le;
	len[0] = 2;
	addr[1] = (u8 *) label;
	len[1] = os_strlen(label);
	addr[2] = data;
	len[2] = data_len;
	addr[3] = length_le;
	len[3] = sizeof(length_le);

	WPA_PUT_LE16(length_le, buf_len * 8);
	pos = 0;
	while (pos < buf_len) {
		plen = buf_len - pos;
		WPA_PUT_LE16(counter_le, counter);
		if (plen >= SHA256_MAC_LEN) {
			hmac_sha256_vector(key, key_len, 4, addr, len,
					   &buf[pos]);
			pos += SHA256_MAC_LEN;
		} else {
			hmac_sha256_vector(key, key_len, 4, addr, len, hash);
			memcpy(&buf[pos], hash, plen);
			break;
		}
		counter++;
	}
}

/* AES tables*/
const u32 Te0[256] = {
    0xc66363a5U, 0xf87c7c84U, 0xee777799U, 0xf67b7b8dU,
    0xfff2f20dU, 0xd66b6bbdU, 0xde6f6fb1U, 0x91c5c554U,
    0x60303050U, 0x02010103U, 0xce6767a9U, 0x562b2b7dU,
    0xe7fefe19U, 0xb5d7d762U, 0x4dababe6U, 0xec76769aU,
    0x8fcaca45U, 0x1f82829dU, 0x89c9c940U, 0xfa7d7d87U,
    0xeffafa15U, 0xb25959ebU, 0x8e4747c9U, 0xfbf0f00bU,
    0x41adadecU, 0xb3d4d467U, 0x5fa2a2fdU, 0x45afafeaU,
    0x239c9cbfU, 0x53a4a4f7U, 0xe4727296U, 0x9bc0c05bU,
    0x75b7b7c2U, 0xe1fdfd1cU, 0x3d9393aeU, 0x4c26266aU,
    0x6c36365aU, 0x7e3f3f41U, 0xf5f7f702U, 0x83cccc4fU,
    0x6834345cU, 0x51a5a5f4U, 0xd1e5e534U, 0xf9f1f108U,
    0xe2717193U, 0xabd8d873U, 0x62313153U, 0x2a15153fU,
    0x0804040cU, 0x95c7c752U, 0x46232365U, 0x9dc3c35eU,
    0x30181828U, 0x379696a1U, 0x0a05050fU, 0x2f9a9ab5U,
    0x0e070709U, 0x24121236U, 0x1b80809bU, 0xdfe2e23dU,
    0xcdebeb26U, 0x4e272769U, 0x7fb2b2cdU, 0xea75759fU,
    0x1209091bU, 0x1d83839eU, 0x582c2c74U, 0x341a1a2eU,
    0x361b1b2dU, 0xdc6e6eb2U, 0xb45a5aeeU, 0x5ba0a0fbU,
    0xa45252f6U, 0x763b3b4dU, 0xb7d6d661U, 0x7db3b3ceU,
    0x5229297bU, 0xdde3e33eU, 0x5e2f2f71U, 0x13848497U,
    0xa65353f5U, 0xb9d1d168U, 0x00000000U, 0xc1eded2cU,
    0x40202060U, 0xe3fcfc1fU, 0x79b1b1c8U, 0xb65b5bedU,
    0xd46a6abeU, 0x8dcbcb46U, 0x67bebed9U, 0x7239394bU,
    0x944a4adeU, 0x984c4cd4U, 0xb05858e8U, 0x85cfcf4aU,
    0xbbd0d06bU, 0xc5efef2aU, 0x4faaaae5U, 0xedfbfb16U,
    0x864343c5U, 0x9a4d4dd7U, 0x66333355U, 0x11858594U,
    0x8a4545cfU, 0xe9f9f910U, 0x04020206U, 0xfe7f7f81U,
    0xa05050f0U, 0x783c3c44U, 0x259f9fbaU, 0x4ba8a8e3U,
    0xa25151f3U, 0x5da3a3feU, 0x804040c0U, 0x058f8f8aU,
    0x3f9292adU, 0x219d9dbcU, 0x70383848U, 0xf1f5f504U,
    0x63bcbcdfU, 0x77b6b6c1U, 0xafdada75U, 0x42212163U,
    0x20101030U, 0xe5ffff1aU, 0xfdf3f30eU, 0xbfd2d26dU,
    0x81cdcd4cU, 0x180c0c14U, 0x26131335U, 0xc3ecec2fU,
    0xbe5f5fe1U, 0x359797a2U, 0x884444ccU, 0x2e171739U,
    0x93c4c457U, 0x55a7a7f2U, 0xfc7e7e82U, 0x7a3d3d47U,
    0xc86464acU, 0xba5d5de7U, 0x3219192bU, 0xe6737395U,
    0xc06060a0U, 0x19818198U, 0x9e4f4fd1U, 0xa3dcdc7fU,
    0x44222266U, 0x542a2a7eU, 0x3b9090abU, 0x0b888883U,
    0x8c4646caU, 0xc7eeee29U, 0x6bb8b8d3U, 0x2814143cU,
    0xa7dede79U, 0xbc5e5ee2U, 0x160b0b1dU, 0xaddbdb76U,
    0xdbe0e03bU, 0x64323256U, 0x743a3a4eU, 0x140a0a1eU,
    0x924949dbU, 0x0c06060aU, 0x4824246cU, 0xb85c5ce4U,
    0x9fc2c25dU, 0xbdd3d36eU, 0x43acacefU, 0xc46262a6U,
    0x399191a8U, 0x319595a4U, 0xd3e4e437U, 0xf279798bU,
    0xd5e7e732U, 0x8bc8c843U, 0x6e373759U, 0xda6d6db7U,
    0x018d8d8cU, 0xb1d5d564U, 0x9c4e4ed2U, 0x49a9a9e0U,
    0xd86c6cb4U, 0xac5656faU, 0xf3f4f407U, 0xcfeaea25U,
    0xca6565afU, 0xf47a7a8eU, 0x47aeaee9U, 0x10080818U,
    0x6fbabad5U, 0xf0787888U, 0x4a25256fU, 0x5c2e2e72U,
    0x381c1c24U, 0x57a6a6f1U, 0x73b4b4c7U, 0x97c6c651U,
    0xcbe8e823U, 0xa1dddd7cU, 0xe874749cU, 0x3e1f1f21U,
    0x964b4bddU, 0x61bdbddcU, 0x0d8b8b86U, 0x0f8a8a85U,
    0xe0707090U, 0x7c3e3e42U, 0x71b5b5c4U, 0xcc6666aaU,
    0x904848d8U, 0x06030305U, 0xf7f6f601U, 0x1c0e0e12U,
    0xc26161a3U, 0x6a35355fU, 0xae5757f9U, 0x69b9b9d0U,
    0x17868691U, 0x99c1c158U, 0x3a1d1d27U, 0x279e9eb9U,
    0xd9e1e138U, 0xebf8f813U, 0x2b9898b3U, 0x22111133U,
    0xd26969bbU, 0xa9d9d970U, 0x078e8e89U, 0x339494a7U,
    0x2d9b9bb6U, 0x3c1e1e22U, 0x15878792U, 0xc9e9e920U,
    0x87cece49U, 0xaa5555ffU, 0x50282878U, 0xa5dfdf7aU,
    0x038c8c8fU, 0x59a1a1f8U, 0x09898980U, 0x1a0d0d17U,
    0x65bfbfdaU, 0xd7e6e631U, 0x844242c6U, 0xd06868b8U,
    0x824141c3U, 0x299999b0U, 0x5a2d2d77U, 0x1e0f0f11U,
    0x7bb0b0cbU, 0xa85454fcU, 0x6dbbbbd6U, 0x2c16163aU,
};
const u32 Td0[256] = {
    0x51f4a750U, 0x7e416553U, 0x1a17a4c3U, 0x3a275e96U,
    0x3bab6bcbU, 0x1f9d45f1U, 0xacfa58abU, 0x4be30393U,
    0x2030fa55U, 0xad766df6U, 0x88cc7691U, 0xf5024c25U,
    0x4fe5d7fcU, 0xc52acbd7U, 0x26354480U, 0xb562a38fU,
    0xdeb15a49U, 0x25ba1b67U, 0x45ea0e98U, 0x5dfec0e1U,
    0xc32f7502U, 0x814cf012U, 0x8d4697a3U, 0x6bd3f9c6U,
    0x038f5fe7U, 0x15929c95U, 0xbf6d7aebU, 0x955259daU,
    0xd4be832dU, 0x587421d3U, 0x49e06929U, 0x8ec9c844U,
    0x75c2896aU, 0xf48e7978U, 0x99583e6bU, 0x27b971ddU,
    0xbee14fb6U, 0xf088ad17U, 0xc920ac66U, 0x7dce3ab4U,
    0x63df4a18U, 0xe51a3182U, 0x97513360U, 0x62537f45U,
    0xb16477e0U, 0xbb6bae84U, 0xfe81a01cU, 0xf9082b94U,
    0x70486858U, 0x8f45fd19U, 0x94de6c87U, 0x527bf8b7U,
    0xab73d323U, 0x724b02e2U, 0xe31f8f57U, 0x6655ab2aU,
    0xb2eb2807U, 0x2fb5c203U, 0x86c57b9aU, 0xd33708a5U,
    0x302887f2U, 0x23bfa5b2U, 0x02036abaU, 0xed16825cU,
    0x8acf1c2bU, 0xa779b492U, 0xf307f2f0U, 0x4e69e2a1U,
    0x65daf4cdU, 0x0605bed5U, 0xd134621fU, 0xc4a6fe8aU,
    0x342e539dU, 0xa2f355a0U, 0x058ae132U, 0xa4f6eb75U,
    0x0b83ec39U, 0x4060efaaU, 0x5e719f06U, 0xbd6e1051U,
    0x3e218af9U, 0x96dd063dU, 0xdd3e05aeU, 0x4de6bd46U,
    0x91548db5U, 0x71c45d05U, 0x0406d46fU, 0x605015ffU,
    0x1998fb24U, 0xd6bde997U, 0x894043ccU, 0x67d99e77U,
    0xb0e842bdU, 0x07898b88U, 0xe7195b38U, 0x79c8eedbU,
    0xa17c0a47U, 0x7c420fe9U, 0xf8841ec9U, 0x00000000U,
    0x09808683U, 0x322bed48U, 0x1e1170acU, 0x6c5a724eU,
    0xfd0efffbU, 0x0f853856U, 0x3daed51eU, 0x362d3927U,
    0x0a0fd964U, 0x685ca621U, 0x9b5b54d1U, 0x24362e3aU,
    0x0c0a67b1U, 0x9357e70fU, 0xb4ee96d2U, 0x1b9b919eU,
    0x80c0c54fU, 0x61dc20a2U, 0x5a774b69U, 0x1c121a16U,
    0xe293ba0aU, 0xc0a02ae5U, 0x3c22e043U, 0x121b171dU,
    0x0e090d0bU, 0xf28bc7adU, 0x2db6a8b9U, 0x141ea9c8U,
    0x57f11985U, 0xaf75074cU, 0xee99ddbbU, 0xa37f60fdU,
    0xf701269fU, 0x5c72f5bcU, 0x44663bc5U, 0x5bfb7e34U,
    0x8b432976U, 0xcb23c6dcU, 0xb6edfc68U, 0xb8e4f163U,
    0xd731dccaU, 0x42638510U, 0x13972240U, 0x84c61120U,
    0x854a247dU, 0xd2bb3df8U, 0xaef93211U, 0xc729a16dU,
    0x1d9e2f4bU, 0xdcb230f3U, 0x0d8652ecU, 0x77c1e3d0U,
    0x2bb3166cU, 0xa970b999U, 0x119448faU, 0x47e96422U,
    0xa8fc8cc4U, 0xa0f03f1aU, 0x567d2cd8U, 0x223390efU,
    0x87494ec7U, 0xd938d1c1U, 0x8ccaa2feU, 0x98d40b36U,
    0xa6f581cfU, 0xa57ade28U, 0xdab78e26U, 0x3fadbfa4U,
    0x2c3a9de4U, 0x5078920dU, 0x6a5fcc9bU, 0x547e4662U,
    0xf68d13c2U, 0x90d8b8e8U, 0x2e39f75eU, 0x82c3aff5U,
    0x9f5d80beU, 0x69d0937cU, 0x6fd52da9U, 0xcf2512b3U,
    0xc8ac993bU, 0x10187da7U, 0xe89c636eU, 0xdb3bbb7bU,
    0xcd267809U, 0x6e5918f4U, 0xec9ab701U, 0x834f9aa8U,
    0xe6956e65U, 0xaaffe67eU, 0x21bccf08U, 0xef15e8e6U,
    0xbae79bd9U, 0x4a6f36ceU, 0xea9f09d4U, 0x29b07cd6U,
    0x31a4b2afU, 0x2a3f2331U, 0xc6a59430U, 0x35a266c0U,
    0x744ebc37U, 0xfc82caa6U, 0xe090d0b0U, 0x33a7d815U,
    0xf104984aU, 0x41ecdaf7U, 0x7fcd500eU, 0x1791f62fU,
    0x764dd68dU, 0x43efb04dU, 0xccaa4d54U, 0xe49604dfU,
    0x9ed1b5e3U, 0x4c6a881bU, 0xc12c1fb8U, 0x4665517fU,
    0x9d5eea04U, 0x018c355dU, 0xfa877473U, 0xfb0b412eU,
    0xb3671d5aU, 0x92dbd252U, 0xe9105633U, 0x6dd64713U,
    0x9ad7618cU, 0x37a10c7aU, 0x59f8148eU, 0xeb133c89U,
    0xcea927eeU, 0xb761c935U, 0xe11ce5edU, 0x7a47b13cU,
    0x9cd2df59U, 0x55f2733fU, 0x1814ce79U, 0x73c737bfU,
    0x53f7cdeaU, 0x5ffdaa5bU, 0xdf3d6f14U, 0x7844db86U,
    0xcaaff381U, 0xb968c43eU, 0x3824342cU, 0xc2a3405fU,
    0x161dc372U, 0xbce2250cU, 0x283c498bU, 0xff0d9541U,
    0x39a80171U, 0x080cb3deU, 0xd8b4e49cU, 0x6456c190U,
    0x7bcb8461U, 0xd532b670U, 0x486c5c74U, 0xd0b85742U,
};
const u8 Td4s[256] = {
    0x52U, 0x09U, 0x6aU, 0xd5U, 0x30U, 0x36U, 0xa5U, 0x38U,
    0xbfU, 0x40U, 0xa3U, 0x9eU, 0x81U, 0xf3U, 0xd7U, 0xfbU,
    0x7cU, 0xe3U, 0x39U, 0x82U, 0x9bU, 0x2fU, 0xffU, 0x87U,
    0x34U, 0x8eU, 0x43U, 0x44U, 0xc4U, 0xdeU, 0xe9U, 0xcbU,
    0x54U, 0x7bU, 0x94U, 0x32U, 0xa6U, 0xc2U, 0x23U, 0x3dU,
    0xeeU, 0x4cU, 0x95U, 0x0bU, 0x42U, 0xfaU, 0xc3U, 0x4eU,
    0x08U, 0x2eU, 0xa1U, 0x66U, 0x28U, 0xd9U, 0x24U, 0xb2U,
    0x76U, 0x5bU, 0xa2U, 0x49U, 0x6dU, 0x8bU, 0xd1U, 0x25U,
    0x72U, 0xf8U, 0xf6U, 0x64U, 0x86U, 0x68U, 0x98U, 0x16U,
    0xd4U, 0xa4U, 0x5cU, 0xccU, 0x5dU, 0x65U, 0xb6U, 0x92U,
    0x6cU, 0x70U, 0x48U, 0x50U, 0xfdU, 0xedU, 0xb9U, 0xdaU,
    0x5eU, 0x15U, 0x46U, 0x57U, 0xa7U, 0x8dU, 0x9dU, 0x84U,
    0x90U, 0xd8U, 0xabU, 0x00U, 0x8cU, 0xbcU, 0xd3U, 0x0aU,
    0xf7U, 0xe4U, 0x58U, 0x05U, 0xb8U, 0xb3U, 0x45U, 0x06U,
    0xd0U, 0x2cU, 0x1eU, 0x8fU, 0xcaU, 0x3fU, 0x0fU, 0x02U,
    0xc1U, 0xafU, 0xbdU, 0x03U, 0x01U, 0x13U, 0x8aU, 0x6bU,
    0x3aU, 0x91U, 0x11U, 0x41U, 0x4fU, 0x67U, 0xdcU, 0xeaU,
    0x97U, 0xf2U, 0xcfU, 0xceU, 0xf0U, 0xb4U, 0xe6U, 0x73U,
    0x96U, 0xacU, 0x74U, 0x22U, 0xe7U, 0xadU, 0x35U, 0x85U,
    0xe2U, 0xf9U, 0x37U, 0xe8U, 0x1cU, 0x75U, 0xdfU, 0x6eU,
    0x47U, 0xf1U, 0x1aU, 0x71U, 0x1dU, 0x29U, 0xc5U, 0x89U,
    0x6fU, 0xb7U, 0x62U, 0x0eU, 0xaaU, 0x18U, 0xbeU, 0x1bU,
    0xfcU, 0x56U, 0x3eU, 0x4bU, 0xc6U, 0xd2U, 0x79U, 0x20U,
    0x9aU, 0xdbU, 0xc0U, 0xfeU, 0x78U, 0xcdU, 0x5aU, 0xf4U,
    0x1fU, 0xddU, 0xa8U, 0x33U, 0x88U, 0x07U, 0xc7U, 0x31U,
    0xb1U, 0x12U, 0x10U, 0x59U, 0x27U, 0x80U, 0xecU, 0x5fU,
    0x60U, 0x51U, 0x7fU, 0xa9U, 0x19U, 0xb5U, 0x4aU, 0x0dU,
    0x2dU, 0xe5U, 0x7aU, 0x9fU, 0x93U, 0xc9U, 0x9cU, 0xefU,
    0xa0U, 0xe0U, 0x3bU, 0x4dU, 0xaeU, 0x2aU, 0xf5U, 0xb0U,
    0xc8U, 0xebU, 0xbbU, 0x3cU, 0x83U, 0x53U, 0x99U, 0x61U,
    0x17U, 0x2bU, 0x04U, 0x7eU, 0xbaU, 0x77U, 0xd6U, 0x26U,
    0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU,
};
const u8 rcons[] = {
	0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36
	/* for 128-bit blocks, Rijndael never uses more than 10 rcon values */
};

/**
 * Expand the cipher key into the encryption key schedule.
 *
 * @return	the number of rounds for the given cipher key size.
 */
static void rijndaelKeySetupEnc(u32 rk[/*44*/], const u8 cipherKey[])
{
	int i;
	u32 temp;

	rk[0] = GETU32(cipherKey     );
	rk[1] = GETU32(cipherKey +  4);
	rk[2] = GETU32(cipherKey +  8);
	rk[3] = GETU32(cipherKey + 12);
	for (i = 0; i < 10; i++) {
		temp  = rk[3];
		rk[4] = rk[0] ^
			TE421(temp) ^ TE432(temp) ^ TE443(temp) ^ TE414(temp) ^
			RCON(i);
		rk[5] = rk[1] ^ rk[4];
		rk[6] = rk[2] ^ rk[5];
		rk[7] = rk[3] ^ rk[6];
		rk = rk + 4;
	}
}

static void rijndaelEncrypt(u32 rk[/*44*/], u8 pt[16], u8 ct[16])
{
	u32 s0, s1, s2, s3, t0, t1, t2, t3;
	int Nr = 10;
#ifndef FULL_UNROLL
	int r;
#endif /* ?FULL_UNROLL */

	/*
	 * map byte array block to cipher state
	 * and add initial round key:
	 */
	s0 = GETU32(pt     ) ^ rk[0];
	s1 = GETU32(pt +  4) ^ rk[1];
	s2 = GETU32(pt +  8) ^ rk[2];
	s3 = GETU32(pt + 12) ^ rk[3];

#define ROUND(i,d,s) \
d##0 = TE0(s##0) ^ TE1(s##1) ^ TE2(s##2) ^ TE3(s##3) ^ rk[4 * i]; \
d##1 = TE0(s##1) ^ TE1(s##2) ^ TE2(s##3) ^ TE3(s##0) ^ rk[4 * i + 1]; \
d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[4 * i + 2]; \
d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3]

#ifdef FULL_UNROLL

	ROUND(1,t,s);
	ROUND(2,s,t);
	ROUND(3,t,s);
	ROUND(4,s,t);
	ROUND(5,t,s);
	ROUND(6,s,t);
	ROUND(7,t,s);
	ROUND(8,s,t);
	ROUND(9,t,s);

	rk += Nr << 2;

#else  /* !FULL_UNROLL */

	/* Nr - 1 full rounds: */
	r = Nr >> 1;
	for (;;) {
		ROUND(1,t,s);
		rk = rk + 8;
		if (--r == 0)
			break;
		ROUND(0,s,t);
	}

#endif /* ?FULL_UNROLL */

#undef ROUND

	/*
	 * apply last round and
	 * map cipher state to byte array block:
	 */
	s0 = TE41(t0) ^ TE42(t1) ^ TE43(t2) ^ TE44(t3) ^ rk[0];
	PUTU32(ct     , s0);
	s1 = TE41(t1) ^ TE42(t2) ^ TE43(t3) ^ TE44(t0) ^ rk[1];
	PUTU32(ct +  4, s1);
	s2 = TE41(t2) ^ TE42(t3) ^ TE43(t0) ^ TE44(t1) ^ rk[2];
	PUTU32(ct +  8, s2);
	s3 = TE41(t3) ^ TE42(t0) ^ TE43(t1) ^ TE44(t2) ^ rk[3];
	PUTU32(ct + 12, s3);
}

static void * aes_encrypt_init(u8 *key, size_t len)
{
	u32 *rk;
	if (len != 16)
		return NULL;
	rk = (u32*)rtw_malloc(AES_PRIV_SIZE);
	if (rk == NULL)
		return NULL;
	rijndaelKeySetupEnc(rk, key);
	return rk;
}

static void aes_128_encrypt(void *ctx, u8 *plain, u8 *crypt)
{
	rijndaelEncrypt(ctx, plain, crypt);
}

static void gf_mulx(u8 *pad)
{
	int i, carry;

	carry = pad[0] & 0x80;
	for (i = 0; i < AES_BLOCK_SIZE - 1; i++)
		pad[i] = (pad[i] << 1) | (pad[i + 1] >> 7);
	pad[AES_BLOCK_SIZE - 1] <<= 1;
	if (carry)
		pad[AES_BLOCK_SIZE - 1] ^= 0x87;
}

static void aes_encrypt_deinit(void *ctx)
{
	memset(ctx, 0, AES_PRIV_SIZE);
	rtw_mfree(ctx, AES_PRIV_SIZE);
}

/**
 * omac1_aes_128_vector - One-Key CBC MAC (OMAC1) hash with AES-128
 * @key: 128-bit key for the hash operation
 * @num_elem: Number of elements in the data vector
 * @addr: Pointers to the data areas
 * @len: Lengths of the data blocks
 * @mac: Buffer for MAC (128 bits, i.e., 16 bytes)
 * Returns: 0 on success, -1 on failure
 *
 * This is a mode for using block cipher (AES in this case) for authentication.
 * OMAC1 was standardized with the name CMAC by NIST in a Special Publication
 * (SP) 800-38B.
 */
static int omac1_aes_128_vector(u8 *key, size_t num_elem,
							 u8 *addr[], size_t *len, u8 *mac)
{
	void *ctx;
	u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE];
	u8 *pos, *end;
	size_t i, e, left, total_len;

	ctx = aes_encrypt_init(key, 16);
	if (ctx == NULL)
		return -1;
	memset(cbc, 0, AES_BLOCK_SIZE);

	total_len = 0;
	for (e = 0; e < num_elem; e++)
		total_len += len[e];
	left = total_len;

	e = 0;
	pos = addr[0];
	end = pos + len[0];

	while (left >= AES_BLOCK_SIZE) {
		for (i = 0; i < AES_BLOCK_SIZE; i++) {
			cbc[i] ^= *pos++;
			if (pos >= end) {
				e++;
				pos = addr[e];
				end = pos + len[e];
			}
		}
		if (left > AES_BLOCK_SIZE)
			aes_128_encrypt(ctx, cbc, cbc);
		left -= AES_BLOCK_SIZE;
	}

	memset(pad, 0, AES_BLOCK_SIZE);
	aes_128_encrypt(ctx, pad, pad);
	gf_mulx(pad);

	if (left || total_len == 0) {
		for (i = 0; i < left; i++) {
			cbc[i] ^= *pos++;
			if (pos >= end) {
				e++;
				pos = addr[e];
				end = pos + len[e];
			}
		}
		cbc[left] ^= 0x80;
		gf_mulx(pad);
	}

	for (i = 0; i < AES_BLOCK_SIZE; i++)
		pad[i] ^= cbc[i];
	aes_128_encrypt(ctx, pad, mac);
	aes_encrypt_deinit(ctx);
	return 0;
}

/**
 * omac1_aes_128 - One-Key CBC MAC (OMAC1) hash with AES-128 (aka AES-CMAC)
 * @key: 128-bit key for the hash operation
 * @data: Data buffer for which a MAC is determined
 * @data_len: Length of data buffer in bytes
 * @mac: Buffer for MAC (128 bits, i.e., 16 bytes)
 * Returns: 0 on success, -1 on failure
 *
 * This is a mode for using block cipher (AES in this case) for authentication.
 * OMAC1 was standardized with the name CMAC by NIST in a Special Publication
 * (SP) 800-38B.
 */
static int omac1_aes_128(u8 *key, u8 *data, size_t data_len, u8 *mac)
{
	return omac1_aes_128_vector(key, 1, &data, &data_len, mac);
}

#ifdef CONFIG_TDLS
void wpa_tdls_generate_tpk(struct rtw_adapter *padapter, struct sta_info *psta)
{
	struct mlme_priv	*pmlmepriv = &padapter->mlmepriv;
	u8 *SNonce = psta->SNonce;
	u8 *ANonce = psta->ANonce;

	u8 key_input[SHA256_MAC_LEN];
	u8 *nonce[2];
	size_t len[2];
	u8 data[3 * ETH_ALEN];

	/* IEEE Std 802.11z-2010 8.5.9.1:
	 * TPK-Key-Input = SHA-256(min(SNonce, ANonce) || max(SNonce, ANonce))
	 */
	len[0] = 32;
	len[1] = 32;
	if (os_memcmp(SNonce, ANonce, 32) < 0) {
		nonce[0] = SNonce;
		nonce[1] = ANonce;
	} else {
		nonce[0] = ANonce;
		nonce[1] = SNonce;
	}

	sha256_vector(2, nonce, len, key_input);

	/*
	 * TPK-Key-Data = KDF-N_KEY(TPK-Key-Input, "TDLS PMK",
	 *	min(MAC_I, MAC_R) || max(MAC_I, MAC_R) || BSSID || N_KEY)
	 * TODO: is N_KEY really included in KDF Context and if so, in which
	 * presentation format (little endian 16-bit?) is it used? It gets
	 * added by the KDF anyway..
	 */

	if (os_memcmp(myid(&(padapter->eeprompriv)), psta->hwaddr, ETH_ALEN) < 0) {
		memcpy(data, myid(&(padapter->eeprompriv)), ETH_ALEN);
		memcpy(data + ETH_ALEN, psta->hwaddr, ETH_ALEN);
	} else {
		memcpy(data, psta->hwaddr, ETH_ALEN);
		memcpy(data + ETH_ALEN, myid(&(padapter->eeprompriv)), ETH_ALEN);
	}
	memcpy(data + 2 * ETH_ALEN, get_bssid(pmlmepriv), ETH_ALEN);

	sha256_prf(key_input, SHA256_MAC_LEN, "TDLS PMK", data, sizeof(data), (u8 *) &psta->tpk, sizeof(psta->tpk));
}

/**
 * wpa_tdls_ftie_mic - Calculate TDLS FTIE MIC
 * @kck: TPK-KCK
 * @lnkid: Pointer to the beginning of Link Identifier IE
 * @rsnie: Pointer to the beginning of RSN IE used for handshake
 * @timeoutie: Pointer to the beginning of Timeout IE used for handshake
 * @ftie: Pointer to the beginning of FT IE
 * @mic: Pointer for writing MIC
 *
 * Calculate MIC for TDLS frame.
 */
int wpa_tdls_ftie_mic(u8 *kck, u8 trans_seq,
							u8 *lnkid, u8 *rsnie, u8 *timeoutie, u8 *ftie,
							u8 *mic)
{
	u8 *buf, *pos;
	struct wpa_tdls_ftie *_ftie;
	struct wpa_tdls_lnkid *_lnkid;
	int ret;
	int len = 2 * ETH_ALEN + 1 + 2 + lnkid[1] + 2 + rsnie[1] +
		2 + timeoutie[1] + 2 + ftie[1];
	buf = rtw_zmalloc(len);
	if (!buf) {
		DBG_8723A("TDLS: No memory for MIC calculation\n");
		return -1;
	}

	pos = buf;
	_lnkid = (struct wpa_tdls_lnkid *) lnkid;
	/* 1) TDLS initiator STA MAC address */
	memcpy(pos, _lnkid->init_sta, ETH_ALEN);
	pos += ETH_ALEN;
	/* 2) TDLS responder STA MAC address */
	memcpy(pos, _lnkid->resp_sta, ETH_ALEN);
	pos += ETH_ALEN;
	/* 3) Transaction Sequence number */
	*pos++ = trans_seq;
	/* 4) Link Identifier IE */
	memcpy(pos, lnkid, 2 + lnkid[1]);
	pos += 2 + lnkid[1];
	/* 5) RSN IE */
	memcpy(pos, rsnie, 2 + rsnie[1]);
	pos += 2 + rsnie[1];
	/* 6) Timeout Interval IE */
	memcpy(pos, timeoutie, 2 + timeoutie[1]);
	pos += 2 + timeoutie[1];
	/* 7) FTIE, with the MIC field of the FTIE set to 0 */
	memcpy(pos, ftie, 2 + ftie[1]);
	_ftie = (struct wpa_tdls_ftie *) pos;
	memset(_ftie->mic, 0, TDLS_MIC_LEN);
	pos += 2 + ftie[1];

	ret = omac1_aes_128(kck, buf, pos - buf, mic);
	rtw_mfree(buf, len);
	return ret;
}

int tdls_verify_mic(u8 *kck, u8 trans_seq,
							u8 *lnkid, u8 *rsnie, u8 *timeoutie, u8 *ftie)
{
	u8 *buf, *pos;
	int len;
	u8 mic[16];
	int ret;
	u8 *rx_ftie, *tmp_ftie;

	if (lnkid == NULL || rsnie == NULL ||
	    timeoutie == NULL || ftie == NULL){
		return 0;
	}

	len = 2 * ETH_ALEN + 1 + 2 + 18 + 2 + *(rsnie+1) + 2 + *(timeoutie+1) + 2 + *(ftie+1);

	buf = rtw_zmalloc(len);
	if (buf == NULL)
		return 0;

	pos = buf;
	/* 1) TDLS initiator STA MAC address */
	memcpy(pos, lnkid + ETH_ALEN + 2, ETH_ALEN);
	pos += ETH_ALEN;
	/* 2) TDLS responder STA MAC address */
	memcpy(pos, lnkid + 2 * ETH_ALEN + 2, ETH_ALEN);
	pos += ETH_ALEN;
	/* 3) Transaction Sequence number */
	*pos++ = trans_seq;
	/* 4) Link Identifier IE */
	memcpy(pos, lnkid, 2 + 18);
	pos += 2 + 18;
	/* 5) RSN IE */
	memcpy(pos, rsnie, 2 + *(rsnie+1));
	pos += 2 + *(rsnie+1);
	/* 6) Timeout Interval IE */
	memcpy(pos, timeoutie, 2 + *(timeoutie+1));
	pos += 2 + *(timeoutie+1);
	/* 7) FTIE, with the MIC field of the FTIE set to 0 */
	memcpy(pos, ftie, 2 + *(ftie+1));
	pos += 2;
	tmp_ftie = (u8 *) (pos+2);
	memset(tmp_ftie, 0, 16);
	pos += *(ftie+1);

	ret = omac1_aes_128(kck, buf, pos - buf, mic);
	rtw_mfree(buf, len);
	if (ret)
		return 0;
	rx_ftie = ftie+4;

	if (os_memcmp(mic, rx_ftie, 16) == 0) {
		/* Valid MIC */
		return 1;
	}

	/* Invalid MIC */
	DBG_8723A( "[%s] Invalid MIC\n", __FUNCTION__);
	return 0;
}
#endif /* CONFIG_TDLS */

void rtw_use_tkipkey_handler(void *FunctionContext)
{
        struct rtw_adapter *padapter = (struct rtw_adapter *)FunctionContext;

_func_enter_;

	RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("^^^rtw_use_tkipkey_handler ^^^\n"));

/*
	if(padapter->bDriverStopped ||padapter->bSurpriseRemoved){
			RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("^^^rtw_use_tkipkey_handler (padapter->bDriverStopped %d)(padapter->bSurpriseRemoved %d)^^^\n",padapter->bDriverStopped,padapter->bSurpriseRemoved));

		return;
	}
	*/

	padapter->securitypriv.busetkipkey=_TRUE;

	RT_TRACE(_module_rtl871x_security_c_,_drv_err_,("^^^rtw_use_tkipkey_handler padapter->securitypriv.busetkipkey=%d^^^\n",padapter->securitypriv.busetkipkey));

_func_exit_;
}
