[PATCH] staging: rtl8723bs: fixed formatting issues in rtw_security.c

[PATCH] staging: rtl8723bs: fixed formatting issues in rtw_security.c

[Kaden Vaughn]

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Hi Greg, this is my first contribution to the Linux kernel!
I tried using git but it wouldn't let me send the email so im doing it through the outlook GUI.



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From a150421dcc8da80d9fc2a93be3e96db5e7e8c758 Mon Sep 17 00:00:00 2001
From: Kaden Vaughn <randomfnp@outlook.com>
Date: Thu, 20 Aug 2026 22:41:27 -0400
Subject: [PATCH] From: Kaden Vaughn <randomfnp@outlook.com>

Subject: [PATCH] staging: rtl8723bs: fixed formatting issues in rtw_security.c

Signed-off-by: Kaden Vaughn <randomfnp@outlook.com>

---
Hello, this is my first commit!

I'm working on spacing and formatting issues in the linux kernel.
Please let me know if I need a v2 or need to fix certain things!
---
 drivers/staging/rtl8723bs/core/rtw_security.c | 1539 +++++++++++++++++
 1 file changed, 1539 insertions(+)
 create mode 100644 drivers/staging/rtl8723bs/core/rtw_security.c

diff --git a/drivers/staging/rtl8723bs/core/rtw_security.c b/drivers/staging/rtl8723bs/core/rtw_security.c
new file mode 100644
index 0000000..acb8276
--- /dev/null
+++ b/drivers/staging/rtl8723bs/core/rtw_security.c
@@ -0,0 +1,1539 @@
+// SPDX-License-Identifier: GPL-2.0
+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ ******************************************************************************/
+#include <linux/crc32.h>
+#include <linux/unaligned.h>
+#include <drv_types.h>
+#include <crypto/aes.h>
+#include <crypto/utils.h>
+
+static const char * const _security_type_str[] = {
+	"N/A",
+	"WEP40",
+	"TKIP",
+	"TKIP_WM",
+	"AES",
+	"WEP104",
+	"SMS4",
+	"WEP_WPA",
+	"BIP",
+};
+
+const char *security_type_str(u8 value)
+{
+	if (value <= _BIP_)
+		return _security_type_str[value];
+	return NULL;
+}
+
+/* WEP related ===== */
+
+/* Need to consider the fragment  situation */
+void rtw_wep_encrypt(struct adapter *padapter,
+		     u8 *pxmitframe)
+{
+	/*  exclude ICV */
+	union {
+		__le32 f0;
+		unsigned char f1[4];
+	} crc;
+
+	signed 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;
+	struct arc4_ctx *ctx = &psecuritypriv->xmit_arc4_ctx;
+
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
+		return;
+
+	hw_hdr_offset = TXDESC_OFFSET;
+	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;
+
+				crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
+
+				arc4_setkey(ctx, wepkey, 3 + keylength);
+				arc4_crypt(ctx, payload, payload, length);
+				arc4_crypt(ctx, payload + length, crc.f1, 4);
+
+			} else {
+				length = pxmitpriv->frag_len
+					- pattrib->hdrlen
+					- pattrib->iv_len
+					- pattrib->icv_len;
+
+				crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
+				arc4_setkey(ctx, wepkey, 3 + keylength);
+				arc4_crypt(ctx, payload, payload, length);
+				arc4_crypt(ctx, payload + length, crc.f1, 4);
+
+				pframe += pxmitpriv->frag_len;
+				pframe = (u8 *)round_up((SIZE_PTR)(pframe), 4);
+			}
+		}
+	}
+}
+
+void rtw_wep_decrypt(struct adapter  *padapter, u8 *precvframe)
+{
+	/*  exclude ICV */
+	u8 crc[4];
+	signed 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;
+	struct arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx;
+
+	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 */
+		arc4_setkey(ctx, wepkey, 3 + keylength);
+		arc4_crypt(ctx, payload, payload,  length);
+
+		/* calculate icv and compare the icv */
+		*((u32 *)crc) = ~crc32_le(~0, payload, length - 4);
+	}
+}
+
+/* 3		=====TKIP related ===== */
+
+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 rtw_secmicsetkey(struct mic_data *pmicdata, u8 *key)
+{
+	/*  Set the key */
+	pmicdata->K0 = get_unaligned_le32(key);
+	pmicdata->K1 = get_unaligned_le32(key + 4);
+	/*  and reset the message */
+	secmicclear(pmicdata);
+}
+
+void rtw_secmicappendbyte(struct mic_data
+			  *pmicdata, u8 b)
+{
+	/*  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;
+	}
+}
+
+void rtw_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nbytes)
+{
+	/*  This is simple */
+	while (nbytes > 0) {
+		rtw_secmicappendbyte(pmicdata, *src++);
+		nbytes--;
+	}
+}
+
+void rtw_secgetmic(struct mic_data *pmicdata, u8 *dst)
+{
+	/*  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. */
+	put_unaligned_le32(pmicdata->L, dst);
+	put_unaligned_le32(pmicdata->R, dst + 4);
+	/*  Reset to the empty message. */
+	secmicclear(pmicdata);
+}
+
+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};
+
+	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);
+}
+
+/* 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"     */
+
+/* 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)
+{
+	signed int  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 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" */
+	}
+}
+
+/*
+ * 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)
+{
+	signed int  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 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe)
+{
+	/*  exclude ICV */
+	u16 pnl;
+	u32 pnh;
+	u8 rc4key[16];
+	u8   ttkey[16];
+	union {
+		__le32 f0;
+		u8 f1[4];
+	} crc;
+	u8   hw_hdr_offset = 0;
+	signed int			curfragnum, length;
+
+	u8 *pframe, *payload, *iv, *prwskey;
+	union pn48 dot11txpn;
+	struct pkt_attrib *pattrib = &((struct xmit_frame *)pxmitframe)->attrib;
+	struct security_priv *psecuritypriv = &padapter->securitypriv;
+	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+	struct arc4_ctx *ctx = &psecuritypriv->xmit_arc4_ctx;
+	u32 res = _SUCCESS;
+
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
+		return _FAIL;
+
+	hw_hdr_offset = TXDESC_OFFSET;
+	pframe = ((struct xmit_frame *)pxmitframe)->buf_addr + hw_hdr_offset;
+
+	/* 4 start to encrypt each fragment */
+	if (pattrib->encrypt != _TKIP_)
+		return _SUCCESS;
+
+	if (is_multicast_ether_addr(pattrib->ra))
+		prwskey = psecuritypriv->dot118021XGrpKey
+			  [psecuritypriv->dot118021XGrpKeyid].skey;
+	else
+		prwskey = pattrib->dot118021x_UncstKey.skey;
+
+	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;
+
+			crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
+
+			arc4_setkey(ctx, rc4key, 16);
+			arc4_crypt(ctx, payload, payload, length);
+			arc4_crypt(ctx, payload + length, crc.f1, 4);
+
+		} else {
+			length = pxmitpriv->frag_len
+				 - pattrib->hdrlen
+				 - pattrib->iv_len
+				 - pattrib->icv_len;
+
+			crc.f0 = cpu_to_le32(~crc32_le(~0, payload, length));
+
+			arc4_setkey(ctx, rc4key, 16);
+			arc4_crypt(ctx, payload, payload, length);
+			arc4_crypt(ctx, payload + length, crc.f1, 4);
+
+			pframe += pxmitpriv->frag_len;
+			pframe = (u8 *)round_up((SIZE_PTR)(pframe), 4);
+		}
+	}
+	return res;
+}
+
+/* The hlen isn't include the IV */
+u32 rtw_tkip_decrypt(struct adapter *padapter, u8 *precvframe)
+{
+	/*  exclude ICV */
+	u16 pnl;
+	u32 pnh;
+	u8   rc4key[16];
+	u8   ttkey[16];
+	u8 crc[4];
+	signed int			length;
+
+	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 arc4_ctx *ctx = &psecuritypriv->recv_arc4_ctx;
+	u32 res = _SUCCESS;
+
+	pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data;
+
+	/* 4 start to decrypt recvframe */
+	if (prxattrib->encrypt != _TKIP_)
+		return _SUCCESS;
+
+	stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]);
+	if (!stainfo)
+		return _FAIL;
+
+	if (is_multicast_ether_addr(prxattrib->ra)) {
+		static unsigned long start;
+		static u32 no_gkey_bc_cnt;
+		static u32 no_gkey_mc_cnt;
+
+		if (!psecuritypriv->binstallGrpkey) {
+			res = _FAIL;
+
+			if (start == 0)
+				start = jiffies;
+
+			if (is_broadcast_ether_addr(prxattrib->ra))
+				no_gkey_bc_cnt++;
+			else
+				no_gkey_mc_cnt++;
+
+			if (jiffies_to_msecs(jiffies - start) > 1000) {
+				if (no_gkey_bc_cnt || no_gkey_mc_cnt) {
+					netdev_dbg(padapter->pnetdev,
+						   FUNC_ADPT_FMT " no_gkey_bc_cnt:%u, no_gkey_mc_cnt:%u\n",
+						   FUNC_ADPT_ARG(padapter),
+						   no_gkey_bc_cnt,
+						   no_gkey_mc_cnt);
+				}
+				start = jiffies;
+				no_gkey_bc_cnt = 0;
+				no_gkey_mc_cnt = 0;
+			}
+			goto exit;
+		}
+
+		if (no_gkey_bc_cnt || no_gkey_mc_cnt) {
+			netdev_dbg(padapter->pnetdev,
+				   FUNC_ADPT_FMT " gkey installed. no_gkey_bc_cnt:%u, no_gkey_mc_cnt:%u\n",
+				   FUNC_ADPT_ARG(padapter),
+				   no_gkey_bc_cnt,
+				   no_gkey_mc_cnt);
+		}
+		start = 0;
+		no_gkey_bc_cnt = 0;
+		no_gkey_mc_cnt = 0;
+
+		prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
+	} else {
+		prwskey = &stainfo->dot118021x_UncstKey.skey[0];
+	}
+
+	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 */
+
+	arc4_setkey(ctx, rc4key, 16);
+	arc4_crypt(ctx, payload, payload, length);
+
+	*((u32 *)crc) = ~crc32_le(~0, payload, length - 4);
+
+	if (crc[3] != payload[length - 1] || crc[2] != payload[length - 2] ||
+	    crc[1] != payload[length - 3] || crc[0] != payload[length - 4])
+		res = _FAIL;
+exit:
+	return res;
+}
+
+/* 3	=====AES related ===== */
+
+#define MAX_MSG_SIZE	2048
+
+/****************************************/
+/* aes128k128d()                        */
+/* Performs a 128 bit AES encrypt with  */
+/* 128 bit data.                        */
+/****************************************/
+static void aes128k128d(u8 *key, u8 *data, u8 *ciphertext)
+{
+	struct aes_enckey aes;
+
+	aes_prepareenckey(&aes, key, 16);
+	aes_encrypt(&aes, ciphertext, data);
+	memzero_explicit(&aes, sizeof(aes));
+}
+
+/************************************************/
+/* construct_mic_iv()                           */
+/* Builds the MIC IV from header fields and PN  */
+/* Baron think the function is construct CCM    */
+/* nonce                                        */
+/************************************************/
+static void construct_mic_iv(u8 *mic_iv,
+			     signed int qc_exists,
+			     signed int a4_exists,
+			     u8 *mpdu,
+			     uint payload_length,
+			     u8 *pn_vector,
+			     uint frtype) /* add for CONFIG_IEEE80211W, none 11w also can use */
+{
+		signed int 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;
+
+		/* 802.11w management frame should set management bit(4) */
+		if (frtype == WIFI_MGT_TYPE)
+			mic_iv[1] |= BIT(4);
+
+		for (i = 2; i < 8; i++)
+			mic_iv[i] = mpdu[i + 8];   /* mic_iv[2:7] = A2[0:5] = mpdu[10:15] */
+		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.                               */
+/* Build AAD SC, A1, A2                           */
+/************************************************/
+static void construct_mic_header1(u8 *mic_header1,
+				  signed int header_length,
+				  u8 *mpdu,
+				  uint frtype) /* for CONFIG_IEEE80211W, none 11w also can use */
+{
+		mic_header1[0] = (u8)((header_length - 2) / 256);
+		mic_header1[1] = (u8)((header_length - 2) % 256);
+
+		/* 802.11w management frame don't AND subtype bits 4, 5, 6 of frame control field */
+		if (frtype == WIFI_MGT_TYPE)
+			mic_header1[2] = mpdu[0];
+		else
+			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];
+}
+
+/************************************************/
+/* construct_mic_header2()                      */
+/* Builds the last MIC header block from        */
+/* header fields.                               */
+/************************************************/
+static void construct_mic_header2(u8 *mic_header2,
+				  u8 *mpdu,
+				  signed int a4_exists,
+				  signed int qc_exists)
+{
+		signed int 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.                               */
+/* Baron think the function is construct CCM    */
+/* nonce                                        */
+/************************************************/
+static void construct_ctr_preload(u8 *ctr_preload,
+				  signed int a4_exists,
+				  signed int qc_exists,
+				  u8 *mpdu,
+				  u8 *pn_vector,
+				  signed int c,
+				  uint frtype) /* for CONFIG_IEEE80211W, none 11w also can use */
+{
+	signed int i = 0;
+
+	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;
+
+	/* 802.11w management frame should set management bit(4) */
+	if (frtype == WIFI_MGT_TYPE)
+		ctr_preload[1] |= BIT(4);
+
+	for (i = 2; i < 8; i++)
+		ctr_preload[i] = mpdu[i + 8];	/* ctr_preload[2:7] = A2[0:5] = mpdu[10:15] */
+	for (i = 8; i < 14; i++)
+		ctr_preload[i] =    pn_vector[13 - i];	/* ctr_preload[8:13] = PN[5:0] */
+	ctr_preload[14] = (unsigned char)(c / 256);	/* Ctr */
+	ctr_preload[15] = (unsigned char)(c % 256);
+}
+
+static signed 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	frtype  = GetFrameType(pframe);
+	uint	frsubtype  = GetFrameSubType(pframe);
+
+	frsubtype = frsubtype >> 4;
+
+	if ((hdrlen == WLAN_HDR_A3_LEN) || (hdrlen ==  WLAN_HDR_A3_QOS_LEN))
+		a4_exists = 0;
+	else
+		a4_exists = 1;
+
+	if (((frtype | frsubtype) == WIFI_DATA_CFACK) ||
+	    ((frtype | frsubtype) == WIFI_DATA_CFPOLL) ||
+	    ((frtype | frsubtype) == WIFI_DATA_CFACKPOLL)) {
+		qc_exists = 1;
+		if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
+			hdrlen += 2;
+
+	} else if ((frtype == WIFI_DATA) && /* add for CONFIG_IEEE80211W,
+					    * none 11w also can use
+					    */
+		   ((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,
+			 frtype); /*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+	construct_mic_header1(mic_header1,
+			      hdrlen,
+			      pframe,	/* message */
+			      frtype); /*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+	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);
+	crypto_xor_cpy(chain_buffer, aes_out, mic_header1, 16);
+	aes128k128d(key, chain_buffer, aes_out);
+	crypto_xor_cpy(chain_buffer, aes_out, mic_header2, 16);
+	aes128k128d(key, chain_buffer, aes_out);
+
+	for (i = 0; i < num_blocks; i++) {
+		crypto_xor_cpy(chain_buffer, aes_out, &pframe[payload_index], 16);
+
+		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++];
+
+		crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+		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, /* message, */
+				      pn_vector, i + 1, frtype);
+		/*  add for CONFIG_IEEE80211W, none 11w also can use */
+		aes128k128d(key, ctr_preload, aes_out);
+		crypto_xor_cpy(chain_buffer, aes_out, &pframe[payload_index], 16);
+		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, /* message, */
+				      pn_vector, num_blocks + 1, frtype);
+		/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+		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);
+		crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+		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, /* message, */
+			      pn_vector, 0, frtype);
+	/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+	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);
+	crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+	for (j = 0; j < 8; j++)
+		pframe[payload_index++] = chain_buffer[j];
+
+	return _SUCCESS;
+}
+
+u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe)
+{	/*  exclude ICV */
+
+	/*static*/
+	/* unsigned char message[MAX_MSG_SIZE]; */
+
+	/* Intermediate Buffers */
+	signed int curfragnum, length;
+	u8 *pframe, *prwskey;	/*  *payload,*iv */
+	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;
+
+	u32 res = _SUCCESS;
+
+	if (!((struct xmit_frame *)pxmitframe)->buf_addr)
+		return _FAIL;
+
+	hw_hdr_offset = TXDESC_OFFSET;
+	pframe = ((struct xmit_frame *)pxmitframe)
+		 ->buf_addr + hw_hdr_offset;
+
+	/* 4 start to encrypt each fragment */
+	if (pattrib->encrypt != _AES_)
+		return _SUCCESS;
+
+	if (is_multicast_ether_addr(pattrib->ra))
+		prwskey = psecuritypriv->dot118021XGrpKey
+			  [psecuritypriv->dot118021XGrpKeyid].skey;
+	else
+		prwskey = pattrib->dot118021x_UncstKey.skey;
+
+	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 *)round_up((SIZE_PTR)(pframe), 4);
+		}
+	}
+	return res;
+}
+
+static signed 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;
+	signed 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 frtype  = GetFrameType(pframe);
+	uint frsubtype  = GetFrameSubType(pframe);
+
+	frsubtype = frsubtype >> 4;
+
+	/* 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 | frsubtype) == WIFI_DATA_CFACK) ||
+	    ((frtype | frsubtype) == WIFI_DATA_CFPOLL) ||
+	    ((frtype | frsubtype) == WIFI_DATA_CFACKPOLL)) {
+		qc_exists = 1;
+		if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
+			hdrlen += 2;
+
+	} else if ((frtype == WIFI_DATA) &&
+	/* only for data packet. add for CONFIG_IEEE80211W,none 11w also can use */
+		   ((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,
+				      frtype);
+				      /*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+		aes128k128d(key, ctr_preload, aes_out);
+		crypto_xor_cpy(chain_buffer, aes_out, &pframe[payload_index], 16);
+
+		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, frtype);
+		/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+		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);
+		crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+		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(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, frtype);
+	/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+	construct_mic_header1(mic_header1, hdrlen, message, frtype);
+	/*  add for CONFIG_IEEE80211W, none 11w also can use */
+	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);
+	crypto_xor_cpy(chain_buffer, aes_out, mic_header1, 16);
+	aes128k128d(key, chain_buffer, aes_out);
+	crypto_xor_cpy(chain_buffer, aes_out, mic_header2, 16);
+	aes128k128d(key, chain_buffer, aes_out);
+
+	for (i = 0; i < num_blocks; i++) {
+		crypto_xor_cpy(chain_buffer, aes_out, &message[payload_index], 16);
+
+		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++];
+
+		crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+		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,
+				      frtype);
+		/*  add for CONFIG_IEEE80211W, none 11w also can use */
+		aes128k128d(key, ctr_preload, aes_out);
+		crypto_xor_cpy(chain_buffer, aes_out, &message[payload_index], 16);
+		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, frtype);
+		/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+		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);
+		crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+		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, frtype);
+	/*  add for CONFIG_IEEE80211W, none 11w also can use */
+
+	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);
+	crypto_xor_cpy(chain_buffer, aes_out, padded_buffer, 16);
+	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])
+			res = _FAIL;
+	}
+	return res;
+}
+
+u32 rtw_aes_decrypt(struct adapter *padapter, u8 *precvframe)
+{	/*  exclude ICV */
+
+	/*static*/
+	/* unsigned char message[MAX_MSG_SIZE]; */
+
+	/* Intermediate Buffers */
+
+	signed 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;
+	u32 res = _SUCCESS;
+
+	pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data;
+	/* 4 start to encrypt each fragment */
+	if (prxattrib->encrypt != _AES_)
+		return _SUCCESS;
+	stainfo = rtw_get_stainfo(&padapter->stapriv, &prxattrib->ta[0]);
+	if (!stainfo)
+		return _FAIL;
+	if (is_multicast_ether_addr(prxattrib->ra)) {
+		static unsigned long start;
+		static u32 no_gkey_bc_cnt;
+		static u32 no_gkey_mc_cnt;
+
+		if (!psecuritypriv->binstallGrpkey) {
+			res = _FAIL;
+
+			if (start == 0)
+				start = jiffies;
+
+			if (is_broadcast_ether_addr(prxattrib->ra))
+				no_gkey_bc_cnt++;
+			else
+				no_gkey_mc_cnt++;
+
+			if (jiffies_to_msecs(jiffies - start) > 1000) {
+				if (no_gkey_bc_cnt || no_gkey_mc_cnt) {
+					netdev_dbg(padapter->pnetdev,
+						   FUNC_ADPT_FMT " no_gkey_bc_cnt:%u, no_gkey_mc_cnt:%u\n",
+						   FUNC_ADPT_ARG(padapter),
+						   no_gkey_bc_cnt,
+						   no_gkey_mc_cnt);
+				}
+				start = jiffies;
+				no_gkey_bc_cnt = 0;
+				no_gkey_mc_cnt = 0;
+			}
+
+			goto exit;
+		}
+
+		if (no_gkey_bc_cnt || no_gkey_mc_cnt) {
+			netdev_dbg(padapter->pnetdev,
+				   FUNC_ADPT_FMT " gkey installed. no_gkey_bc_cnt:%u, no_gkey_mc_cnt:%u\n",
+				   FUNC_ADPT_ARG(padapter),
+				   no_gkey_bc_cnt,
+				   no_gkey_mc_cnt);
+		}
+		start = 0;
+		no_gkey_bc_cnt = 0;
+		no_gkey_mc_cnt = 0;
+
+		prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
+		if (psecuritypriv->dot118021XGrpKeyid != prxattrib->key_index) {
+			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);
+
+exit:
+	return res;
+}
+
+u32 rtw_BIP_verify(struct adapter *padapter, u8 *precvframe)
+{
+	struct rx_pkt_attrib *pattrib = &((union recv_frame *)precvframe)->u.hdr.attrib;
+	u8 *pframe;
+	u8 *BIP_AAD, *p;
+	u32 res = _FAIL;
+	uint len, ori_len;
+	struct ieee80211_hdr *pwlanhdr;
+	u8 mic[16];
+	struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
+	__le16 le_tmp;
+	__le64 le_tmp64 = 0;
+
+	ori_len = pattrib->pkt_len - WLAN_HDR_A3_LEN + BIP_AAD_SIZE;
+	BIP_AAD = kzalloc(ori_len, GFP_KERNEL);
+	if (!BIP_AAD)
+		return _FAIL;
+
+	/* PKT start */
+	pframe = (unsigned char *)((union recv_frame *)precvframe)->u.hdr.rx_data;
+	/* mapping to wlan header */
+	pwlanhdr = (struct ieee80211_hdr *)pframe;
+	/* save the frame body + MME */
+	memcpy(BIP_AAD + BIP_AAD_SIZE, pframe
+	       + WLAN_HDR_A3_LEN, pattrib->pkt_len
+	       - WLAN_HDR_A3_LEN);
+	/* find MME IE pointer */
+	p = rtw_get_ie(BIP_AAD + BIP_AAD_SIZE, WLAN_EID_MMIE, &len,
+		       pattrib->pkt_len
+		       - WLAN_HDR_A3_LEN);
+	/* Baron */
+	if (p) {
+		u16 keyid = 0;
+		u64 temp_ipn = 0;
+		/* save packet number */
+		memcpy(&le_tmp64, p + 4, 6);
+		temp_ipn = le64_to_cpu(le_tmp64);
+		/* BIP packet number should bigger than previous BIP packet */
+		if (temp_ipn <= pmlmeext->mgnt_80211w_IPN_rx)
+			goto BIP_exit;
+
+		/* copy key index */
+		memcpy(&le_tmp, p + 2, 2);
+		keyid = le16_to_cpu(le_tmp);
+		if (keyid != padapter->securitypriv.dot11wBIPKeyid)
+			goto BIP_exit;
+
+		/* clear the MIC field of MME to zero */
+		memset(p + 2 + len - 8, 0, 8);
+
+		/* conscruct AAD, copy frame control field */
+		memcpy(BIP_AAD, &pwlanhdr->frame_control, 2);
+		ClearRetry(BIP_AAD);
+		ClearPwrMgt(BIP_AAD);
+		ClearMData(BIP_AAD);
+		/* conscruct AAD, copy address 1 to address 3 */
+		memcpy(BIP_AAD + 2, &pwlanhdr->addrs, sizeof(pwlanhdr->addrs));
+
+		if (omac1_aes_128(padapter->securitypriv.dot11wBIPKey
+			[padapter->securitypriv.dot11wBIPKeyid].skey
+			, BIP_AAD, ori_len, mic))
+			goto BIP_exit;
+
+		/* MIC field should be last 8 bytes of packet (packet without FCS) */
+		if (!memcmp(mic, pframe + pattrib->pkt_len - 8, 8)) {
+			pmlmeext->mgnt_80211w_IPN_rx = temp_ipn;
+			res = _SUCCESS;
+		} else {
+		}
+
+	} else {
+		res = RTW_RX_HANDLED;
+	}
+BIP_exit:
+
+	kfree(BIP_AAD);
+	return res;
+}
+
+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;
+}
+
+/**
+ * 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)
+{
+	struct aes_enckey aes;
+	u8 cbc[AES_BLOCK_SIZE], pad[AES_BLOCK_SIZE];
+	u8 *pos, *end;
+	size_t i, e, left, total_len;
+	int ret;
+
+	ret = aes_prepareenckey(&aes, key, 16);
+	if (ret)
+		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_encrypt(&aes, cbc, cbc);
+		left -= AES_BLOCK_SIZE;
+	}
+
+	memset(pad, 0, AES_BLOCK_SIZE);
+	aes_encrypt(&aes, 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_encrypt(&aes, pad, mac);
+	memzero_explicit(&aes, sizeof(aes));
+	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.
+ * modify for CONFIG_IEEE80211W
+ */
+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);
+}
+
+/* Restore HW wep key setting according to key_mask */
+void rtw_sec_restore_wep_key(struct adapter *adapter)
+{
+	struct security_priv *securitypriv = &adapter->securitypriv;
+	signed int keyid;
+
+	if ((securitypriv->dot11PrivacyAlgrthm == _WEP40_) ||
+	    (securitypriv->dot11PrivacyAlgrthm == _WEP104_)) {
+		for (keyid = 0; keyid < 4; keyid++) {
+			if (securitypriv->key_mask & BIT(keyid)) {
+				if (keyid == securitypriv->dot11PrivacyKeyIndex)
+					rtw_set_key(adapter, securitypriv, keyid, 1, false);
+				else
+					rtw_set_key(adapter, securitypriv, keyid, 0, false);
+			}
+		}
+	}
+}
+
+u8 rtw_handle_tkip_countermeasure(struct adapter *adapter, const char *caller)
+{
+	struct security_priv *securitypriv = &adapter->securitypriv;
+	u8 status = _SUCCESS;
+
+	if (securitypriv->btkip_countermeasure) {
+		unsigned long passing_ms = jiffies_to_msecs(jiffies
+							    - securitypriv
+							    ->btkip_countermeasure_time);
+
+		if (passing_ms > 60 * 1000) {
+			netdev_dbg(adapter->pnetdev,
+				   "%s(%s) countermeasure time:%lus > 60s\n",
+				   caller, ADPT_ARG(adapter),
+				   passing_ms / 1000);
+			securitypriv->btkip_countermeasure = false;
+			securitypriv->btkip_countermeasure_time = 0;
+		} else {
+			netdev_dbg(adapter->pnetdev,
+				   "%s(%s) countermeasure time:%lus < 60s\n",
+				   caller, ADPT_ARG(adapter),
+				   passing_ms / 1000);
+			status = _FAIL;
+		}
+	}
+
+	return status;
+}
-- 
2.47.3

Re: [PATCH] staging: rtl8723bs: fixed formatting issues in rtw_security.c

[gregkh]

On Fri, Aug 21, 2026 at 03:15:50AM +0000, Kaden Vaughn wrote:
> Hi Greg, this is my first contribution to the Linux kernel!
> I tried using git but it wouldn't let me send the email so im doing it through the outlook GUI.

That didn't work :(

Please use git to send this, as we can't take attachments.  There are
lots of tutorials online for how to get git send-email to work.


> From a150421dcc8da80d9fc2a93be3e96db5e7e8c758 Mon Sep 17 00:00:00 2001
> From: Kaden Vaughn <randomfnp@outlook.com>
> Date: Thu, 20 Aug 2026 22:41:27 -0400
> Subject: [PATCH] From: Kaden Vaughn <randomfnp@outlook.com>
> 
> Subject: [PATCH] staging: rtl8723bs: fixed formatting issues in rtw_security.c
> 
> Signed-off-by: Kaden Vaughn <randomfnp@outlook.com>

No changelog text?

And this isn't a diff, it's just a whole new file :(

>  drivers/staging/rtl8723bs/core/rtw_security.c | 1539 +++++++++++++++++
>  1 file changed, 1539 insertions(+)
>  create mode 100644 drivers/staging/rtl8723bs/core/rtw_security.c

So something went wrong with your commit.

good luck!

greg k-h