| /* |
| * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| /* |
| * Copyright (c) 2012, The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * |
| * Airgo Networks, Inc proprietary. All rights reserved. |
| * This file limSecurityUtils.h contains the utility definitions |
| * related to WEP encryption/decryption etc. |
| * Author: Chandra Modumudi |
| * Date: 02/13/02 |
| * History:- |
| * Date Modified by Modification Information |
| * -------------------------------------------------------------------- |
| */ |
| #ifndef __LIM_SECURITY_UTILS_H |
| #define __LIM_SECURITY_UTILS_H |
| #include "sirMacProtDef.h" //for tSirMacAuthFrameBody |
| |
| #define LIM_ENCR_AUTH_BODY_LEN (sizeof(tSirMacAuthFrameBody) + \ |
| SIR_MAC_WEP_IV_LENGTH + \ |
| SIR_MAC_WEP_ICV_LENGTH) |
| struct tLimPreAuthNode; |
| |
| tANI_U8 limIsAuthAlgoSupported(tpAniSirGlobal, tAniAuthType, tpPESession); |
| |
| // MAC based authentication related functions |
| void limInitPreAuthList(tpAniSirGlobal); |
| void limDeletePreAuthList(tpAniSirGlobal); |
| struct tLimPreAuthNode *limSearchPreAuthList(tpAniSirGlobal, tSirMacAddr); |
| void limAddPreAuthNode(tpAniSirGlobal, struct tLimPreAuthNode *); |
| void limDeletePreAuthNode(tpAniSirGlobal, tSirMacAddr); |
| void limReleasePreAuthNode(tpAniSirGlobal pMac, tpLimPreAuthNode pAuthNode); |
| void limRestoreFromAuthState(tpAniSirGlobal, |
| tSirResultCodes, tANI_U16,tpPESession); |
| |
| // Encryption/Decryption related functions |
| tCfgWepKeyEntry *limLookUpKeyMappings(tSirMacAddr); |
| void limComputeCrc32(tANI_U8 *, tANI_U8 *, tANI_U8); |
| void limRC4(tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32, tANI_U16); |
| void limEncryptAuthFrame(tpAniSirGlobal, tANI_U8, tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32); |
| tANI_U8 limDecryptAuthFrame(tpAniSirGlobal, tANI_U8 *, tANI_U8 *, tANI_U8 *, tANI_U32, tANI_U16); |
| |
| void limSendSetBssKeyReq( tpAniSirGlobal, tLimMlmSetKeysReq *,tpPESession ); |
| void limSendSetStaKeyReq( tpAniSirGlobal, tLimMlmSetKeysReq *, tANI_U16, tANI_U8,tpPESession); |
| void limPostSmeSetKeysCnf( tpAniSirGlobal, tLimMlmSetKeysReq *, tLimMlmSetKeysCnf * ); |
| |
| void limSendRemoveBssKeyReq(tpAniSirGlobal pMac, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq,tpPESession); |
| void limSendRemoveStaKeyReq(tpAniSirGlobal pMac, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq, tANI_U16 staIdx,tpPESession); |
| void limPostSmeRemoveKeyCnf(tpAniSirGlobal pMac, tpPESession psessionEntry, tLimMlmRemoveKeyReq * pMlmRemoveKeyReq, tLimMlmRemoveKeyCnf * mlmRemoveKeyCnf); |
| |
| #define PTAPS 0xedb88320 |
| |
| static inline tANI_U32 |
| limCrcUpdate(tANI_U32 crc, tANI_U8 x) |
| { |
| |
| // Update CRC computation for 8 bits contained in x |
| // |
| tANI_U32 z; |
| tANI_U32 fb; |
| int i; |
| |
| z = crc^x; |
| for (i=0; i<8; i++) { |
| fb = z & 1; |
| z >>= 1; |
| if (fb) z ^= PTAPS; |
| } |
| return z; |
| } |
| |
| #endif /* __LIM_SECURITY_UTILS_H */ |