aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/rtl8723au/core/rtw_security.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/rtl8723au/core/rtw_security.c')
-rw-r--r--drivers/staging/rtl8723au/core/rtw_security.c215
1 files changed, 107 insertions, 108 deletions
diff --git a/drivers/staging/rtl8723au/core/rtw_security.c b/drivers/staging/rtl8723au/core/rtw_security.c
index 3e79b66d0897..df7261c045fe 100644
--- a/drivers/staging/rtl8723au/core/rtw_security.c
+++ b/drivers/staging/rtl8723au/core/rtw_security.c
@@ -615,91 +615,90 @@ int rtw_tkip_encrypt23a(struct rtw_adapter *padapter,
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
int res = _SUCCESS;
+ if (pattrib->encrypt != WLAN_CIPHER_SUITE_TKIP)
+ return _FAIL;
+
if (!pxmitframe->buf_addr)
return _FAIL;
hw_hdr_offset = TXDESC_OFFSET;
pframe = pxmitframe->buf_addr + hw_hdr_offset;
- /* 4 start to encrypt each fragment */
- if (pattrib->encrypt == WLAN_CIPHER_SUITE_TKIP) {
- if (pattrib->psta)
- stainfo = pattrib->psta;
- else {
- DBG_8723A("%s, call rtw_get_stainfo()\n", __func__);
- stainfo = rtw_get_stainfo23a(&padapter->stapriv,
- &pattrib->ra[0]);
- }
- if (stainfo != NULL) {
+ if (pattrib->psta)
+ stainfo = pattrib->psta;
+ else {
+ DBG_8723A("%s, call rtw_get_stainfo()\n", __func__);
+ stainfo = rtw_get_stainfo23a(&padapter->stapriv,
+ &pattrib->ra[0]);
+ }
- if (!(stainfo->state & _FW_LINKED)) {
- DBG_8723A("%s, psta->state(0x%x) != _FW_LINKED\n", __func__, stainfo->state);
- return _FAIL;
- }
+ if (stainfo == NULL) {
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
+ "rtw_tkip_encrypt23a: stainfo == NULL!!!\n");
+ DBG_8723A("%s, psta == NUL\n", __func__);
+ return _FAIL;
+ }
- RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
- "rtw_tkip_encrypt23a: stainfo!= NULL!!!\n");
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
+ "rtw_tkip_encrypt23a: stainfo!= NULL!!!\n");
- if (is_multicast_ether_addr(pattrib->ra))
- prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey;
- else
- prwskey = &stainfo->dot118021x_UncstKey.skey[0];
+ if (!(stainfo->state & _FW_LINKED)) {
+ DBG_8723A("%s, psta->state(0x%x) != _FW_LINKED\n", __func__, stainfo->state);
+ return _FAIL;
+ }
- prwskeylen = 16;
+ if (is_multicast_ether_addr(pattrib->ra))
+ prwskey = psecuritypriv->dot118021XGrpKey[psecuritypriv->dot118021XGrpKeyid].skey;
+ else
+ prwskey = &stainfo->dot118021x_UncstKey.skey[0];
- for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
- iv = pframe + pattrib->hdrlen;
- payload = pframe + pattrib->iv_len + pattrib->hdrlen;
+ prwskeylen = 16;
- GET_TKIP_PN(iv, dot11txpn);
+ /* 4 start to encrypt each fragment */
+ for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
+ iv = pframe + pattrib->hdrlen;
+ payload = pframe + pattrib->iv_len + pattrib->hdrlen;
- pnl = (u16)(dot11txpn.val);
- pnh = (u32)(dot11txpn.val>>16);
+ GET_TKIP_PN(iv, dot11txpn);
- phase1((u16 *)&ttkey[0], prwskey, &pattrib->ta[0], pnh);
+ pnl = (u16)(dot11txpn.val);
+ pnh = (u32)(dot11txpn.val>>16);
- phase2(&rc4key[0], prwskey, (u16 *)&ttkey[0], pnl);
+ phase1((u16 *)&ttkey[0], prwskey, &pattrib->ta[0], pnh);
- if ((curfragnum + 1) == pattrib->nr_frags) { /* 4 the last fragment */
- length = (pattrib->last_txcmdsz -
- pattrib->hdrlen -
- pattrib->iv_len -
- pattrib->icv_len);
+ phase2(&rc4key[0], prwskey, (u16 *)&ttkey[0], pnl);
- 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*/
+ if ((curfragnum + 1) == pattrib->nr_frags) { /* 4 the last fragment */
+ length = (pattrib->last_txcmdsz -
+ pattrib->hdrlen -
+ pattrib->iv_len -
+ pattrib->icv_len);
- arcfour_init(&mycontext, rc4key, 16);
- arcfour_encrypt(&mycontext, payload, payload, length);
- arcfour_encrypt(&mycontext, payload + length, crc, 4);
+ 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*/
- } else {
- length = (pxmitpriv->frag_len -
- pattrib->hdrlen -
- pattrib->iv_len -
- pattrib->icv_len);
+ arcfour_init(&mycontext, rc4key, 16);
+ arcfour_encrypt(&mycontext, payload, payload, length);
+ arcfour_encrypt(&mycontext, payload + length, crc, 4);
- *((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);
- pframe += pxmitpriv->frag_len;
- pframe = PTR_ALIGN(pframe, 4);
- }
- }
+ *((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 {
- RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
- "rtw_tkip_encrypt23a: stainfo == NULL!!!\n");
- DBG_8723A("%s, psta == NUL\n", __func__);
- res = _FAIL;
+ pframe += pxmitpriv->frag_len;
+ pframe = PTR_ALIGN(pframe, 4);
}
-
}
return res;
@@ -725,64 +724,64 @@ int rtw_tkip_decrypt23a(struct rtw_adapter *padapter,
struct sk_buff *skb = precvframe->pkt;
int res = _SUCCESS;
+ if (prxattrib->encrypt != WLAN_CIPHER_SUITE_TKIP)
+ return _FAIL;
+
pframe = skb->data;
+ stainfo = rtw_get_stainfo23a(&padapter->stapriv,
+ &prxattrib->ta[0]);
+ if (stainfo == NULL) {
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
+ "rtw_tkip_decrypt23a: stainfo == NULL!!!\n");
+ return _FAIL;
+ }
+
/* 4 start to decrypt recvframe */
- if (prxattrib->encrypt == WLAN_CIPHER_SUITE_TKIP) {
+ if (is_multicast_ether_addr(prxattrib->ra)) {
+ if (psecuritypriv->binstallGrpkey == 0) {
+ res = _FAIL;
+ DBG_8723A("%s:rx bc/mc packets, but didn't install group key!!!!!!!!!!\n", __func__);
+ goto exit;
+ }
+ prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
+ prwskeylen = 16;
+ } else {
+ RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
+ "rtw_tkip_decrypt23a: stainfo!= NULL!!!\n");
+ prwskey = &stainfo->dot118021x_UncstKey.skey[0];
+ prwskeylen = 16;
+ }
- stainfo = rtw_get_stainfo23a(&padapter->stapriv,
- &prxattrib->ta[0]);
- if (stainfo != NULL) {
-
- if (is_multicast_ether_addr(prxattrib->ra)) {
- if (psecuritypriv->binstallGrpkey == 0) {
- res = _FAIL;
- DBG_8723A("%s:rx bc/mc packets, but didn't install group key!!!!!!!!!!\n", __func__);
- goto exit;
- }
- prwskey = psecuritypriv->dot118021XGrpKey[prxattrib->key_index].skey;
- prwskeylen = 16;
- } else {
- RT_TRACE(_module_rtl871x_security_c_, _drv_err_,
- "rtw_tkip_decrypt23a: stainfo!= NULL!!!\n");
- prwskey = &stainfo->dot118021x_UncstKey.skey[0];
- prwskeylen = 16;
- }
+ iv = pframe + prxattrib->hdrlen;
+ payload = pframe + prxattrib->iv_len + prxattrib->hdrlen;
+ length = skb->len - prxattrib->hdrlen - prxattrib->iv_len;
- iv = pframe + prxattrib->hdrlen;
- payload = pframe + prxattrib->iv_len + prxattrib->hdrlen;
- length = skb->len - prxattrib->hdrlen - prxattrib->iv_len;
+ GET_TKIP_PN(iv, dot11txpn);
- GET_TKIP_PN(iv, dot11txpn);
+ pnl = (u16)(dot11txpn.val);
+ pnh = (u32)(dot11txpn.val>>16);
- 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);
- 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);
- /* 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));
- *((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_decrypt23a: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_decrypt23a: stainfo == NULL!!!\n");
- res = _FAIL;
- }
+ 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_decrypt23a: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;
}
+
exit:
return res;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.