--- /dev/null
+/*
+ *************************************************************************
+ * Ralink Tech Inc.
+ * 5F., No.36, Taiyuan St., Jhubei City,
+ * Hsinchu County 302,
+ * Taiwan, R.O.C.
+ *
+ * (c) Copyright 2002-2007, Ralink Technology, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * 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., *
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * *
+ *************************************************************************
+
+ Module Name:
+ rtmp_wep.c
+
+ Abstract:
+
+ Revision History:
+ Who When What
+ -------- ---------- ----------------------------------------------
+ Paul Wu 10-28-02 Initial
+*/
+
+#include "../rt_config.h"
+
+UINT FCSTAB_32[256] =
+{
+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
+ 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+ 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+ 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+ 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+ 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
+ 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+ 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+ 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+ 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
+ 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
+ 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+ 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+ 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+ 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
+ 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
+ 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+ 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+ 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+ 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
+ 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+ 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+ 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+ 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+ 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
+ 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
+ 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+ 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+ 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+ 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+ 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
+ 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+ 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+ 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+ 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
+ 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
+ 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+ 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+ 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+ 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
+ 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
+ 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+ 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+ 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+ 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
+ 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+ 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+ 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+ 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+ 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
+ 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
+ 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+ 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+ 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+/*
+UCHAR WEPKEY[] = {
+ //IV
+ 0x00, 0x11, 0x22,
+ //WEP KEY
+ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+ };
+ */
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Init WEP function.
+
+ Arguments:
+ pAd Pointer to our adapter
+ pKey Pointer to the WEP KEY
+ KeyId WEP Key ID
+ KeyLen the length of WEP KEY
+ pDest Pointer to the destination which Encryption data will store in.
+
+ Return Value:
+ None
+
+ IRQL = DISPATCH_LEVEL
+
+ Note:
+
+ ========================================================================
+*/
+VOID RTMPInitWepEngine(
+ IN PRTMP_ADAPTER pAd,
+ IN PUCHAR pKey,
+ IN UCHAR KeyId,
+ IN UCHAR KeyLen,
+ IN OUT PUCHAR pDest)
+{
+ UINT i;
+ UCHAR WEPKEY[] = {
+ //IV
+ 0x00, 0x11, 0x22,
+ //WEP KEY
+ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+ };
+
+ pAd->PrivateInfo.FCSCRC32 = PPPINITFCS32; //Init crc32.
+
+#ifdef CONFIG_STA_SUPPORT
+ if (pAd->StaCfg.bCkipOn && (pAd->StaCfg.CkipFlag & 0x10) && (pAd->OpMode == OPMODE_STA))
+ {
+ ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, pKey, KeyLen); //INIT SBOX, KEYLEN+3(IV)
+ NdisMoveMemory(pDest, pKey, 3); //Append Init Vector
+ }
+ else
+#endif // CONFIG_STA_SUPPORT //
+ {
+ NdisMoveMemory(WEPKEY + 3, pKey, KeyLen);
+
+ for(i = 0; i < 3; i++)
+ WEPKEY[i] = RandomByte(pAd); //Call mlme RandomByte() function.
+ ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, WEPKEY, KeyLen + 3); //INIT SBOX, KEYLEN+3(IV)
+
+ NdisMoveMemory(pDest, WEPKEY, 3); //Append Init Vector
+ }
+ *(pDest+3) = (KeyId << 6); //Append KEYID
+
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Encrypt transimitted data
+
+ Arguments:
+ pAd Pointer to our adapter
+ pSrc Pointer to the transimitted source data that will be encrypt
+ pDest Pointer to the destination where entryption data will be store in.
+ Len Indicate the length of the source data
+
+ Return Value:
+ None
+
+ IRQL = DISPATCH_LEVEL
+
+ Note:
+
+ ========================================================================
+*/
+VOID RTMPEncryptData(
+ IN PRTMP_ADAPTER pAd,
+ IN PUCHAR pSrc,
+ IN PUCHAR pDest,
+ IN UINT Len)
+{
+ pAd->PrivateInfo.FCSCRC32 = RTMP_CALC_FCS32(pAd->PrivateInfo.FCSCRC32, pSrc, Len);
+ ARCFOUR_ENCRYPT(&pAd->PrivateInfo.WEPCONTEXT, pDest, pSrc, Len);
+}
+
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Decrypt received WEP data
+
+ Arguments:
+ pAdapter Pointer to our adapter
+ pSrc Pointer to the received data
+ Len the length of the received data
+
+ Return Value:
+ TRUE Decrypt WEP data success
+ FALSE Decrypt WEP data failed
+
+ Note:
+
+ ========================================================================
+*/
+BOOLEAN RTMPSoftDecryptWEP(
+ IN PRTMP_ADAPTER pAd,
+ IN PUCHAR pData,
+ IN ULONG DataByteCnt,
+ IN PCIPHER_KEY pGroupKey)
+{
+ UINT trailfcs;
+ UINT crc32;
+ UCHAR KeyIdx;
+ UCHAR WEPKEY[] = {
+ //IV
+ 0x00, 0x11, 0x22,
+ //WEP KEY
+ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC
+ };
+ UCHAR *pPayload = (UCHAR *)pData + LENGTH_802_11;
+ ULONG payload_len = DataByteCnt - LENGTH_802_11;
+
+ NdisMoveMemory(WEPKEY, pPayload, 3); //Get WEP IV
+
+ KeyIdx = (*(pPayload + 3) & 0xc0) >> 6;
+ if (pGroupKey[KeyIdx].KeyLen == 0)
+ return (FALSE);
+
+ NdisMoveMemory(WEPKEY + 3, pGroupKey[KeyIdx].Key, pGroupKey[KeyIdx].KeyLen);
+ ARCFOUR_INIT(&pAd->PrivateInfo.WEPCONTEXT, WEPKEY, pGroupKey[KeyIdx].KeyLen + 3);
+ ARCFOUR_DECRYPT(&pAd->PrivateInfo.WEPCONTEXT, pPayload, pPayload + 4, payload_len - 4);
+ NdisMoveMemory(&trailfcs, pPayload + payload_len - 8, 4);
+ crc32 = RTMP_CALC_FCS32(PPPINITFCS32, pPayload, payload_len - 8); //Skip last 4 bytes(FCS).
+ crc32 ^= 0xffffffff; /* complement */
+
+ if(crc32 != cpu2le32(trailfcs))
+ {
+ DBGPRINT(RT_DEBUG_TRACE, ("! WEP Data CRC Error !\n")); //CRC error.
+ return (FALSE);
+ }
+ return (TRUE);
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ The Stream Cipher Encryption Algorithm "ARCFOUR" initialize
+
+ Arguments:
+ Ctx Pointer to ARCFOUR CONTEXT (SBOX)
+ pKey Pointer to the WEP KEY
+ KeyLen Indicate the length fo the WEP KEY
+
+ Return Value:
+ None
+
+ IRQL = DISPATCH_LEVEL
+
+ Note:
+
+ ========================================================================
+*/
+VOID ARCFOUR_INIT(
+ IN PARCFOURCONTEXT Ctx,
+ IN PUCHAR pKey,
+ IN UINT KeyLen)
+{
+ UCHAR t, u;
+ UINT keyindex;
+ UINT stateindex;
+ PUCHAR state;
+ UINT counter;
+
+ state = Ctx->STATE;
+ Ctx->X = 0;
+ Ctx->Y = 0;
+ for (counter = 0; counter < 256; counter++)
+ state[counter] = (UCHAR)counter;
+ keyindex = 0;
+ stateindex = 0;
+ for (counter = 0; counter < 256; counter++)
+ {
+ t = state[counter];
+ stateindex = (stateindex + pKey[keyindex] + t) & 0xff;
+ u = state[stateindex];
+ state[stateindex] = t;
+ state[counter] = u;
+ if (++keyindex >= KeyLen)
+ keyindex = 0;
+ }
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Get bytes from ARCFOUR CONTEXT (S-BOX)
+
+ Arguments:
+ Ctx Pointer to ARCFOUR CONTEXT (SBOX)
+
+ Return Value:
+ UCHAR - the value of the ARCFOUR CONTEXT (S-BOX)
+
+ Note:
+
+ ========================================================================
+*/
+UCHAR ARCFOUR_BYTE(
+ IN PARCFOURCONTEXT Ctx)
+{
+ UINT x;
+ UINT y;
+ UCHAR sx, sy;
+ PUCHAR state;
+
+ state = Ctx->STATE;
+ x = (Ctx->X + 1) & 0xff;
+ sx = state[x];
+ y = (sx + Ctx->Y) & 0xff;
+ sy = state[y];
+ Ctx->X = x;
+ Ctx->Y = y;
+ state[y] = sx;
+ state[x] = sy;
+
+ return(state[(sx + sy) & 0xff]);
+
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ The Stream Cipher Decryption Algorithm
+
+ Arguments:
+ Ctx Pointer to ARCFOUR CONTEXT (SBOX)
+ pDest Pointer to the Destination
+ pSrc Pointer to the Source data
+ Len Indicate the length of the Source data
+
+ Return Value:
+ None
+
+ Note:
+
+ ========================================================================
+*/
+VOID ARCFOUR_DECRYPT(
+ IN PARCFOURCONTEXT Ctx,
+ IN PUCHAR pDest,
+ IN PUCHAR pSrc,
+ IN UINT Len)
+{
+ UINT i;
+
+ for (i = 0; i < Len; i++)
+ pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ The Stream Cipher Encryption Algorithm
+
+ Arguments:
+ Ctx Pointer to ARCFOUR CONTEXT (SBOX)
+ pDest Pointer to the Destination
+ pSrc Pointer to the Source data
+ Len Indicate the length of the Source dta
+
+ Return Value:
+ None
+
+ IRQL = DISPATCH_LEVEL
+
+ Note:
+
+ ========================================================================
+*/
+VOID ARCFOUR_ENCRYPT(
+ IN PARCFOURCONTEXT Ctx,
+ IN PUCHAR pDest,
+ IN PUCHAR pSrc,
+ IN UINT Len)
+{
+ UINT i;
+
+ for (i = 0; i < Len; i++)
+ pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+/*
+ ========================================================================
+
+ Routine Description:
+ The Stream Cipher Encryption Algorithm which conform to the special requirement to encrypt GTK.
+
+ Arguments:
+ Ctx Pointer to ARCFOUR CONTEXT (SBOX)
+ pDest Pointer to the Destination
+ pSrc Pointer to the Source data
+ Len Indicate the length of the Source dta
+
+
+ ========================================================================
+*/
+
+VOID WPAARCFOUR_ENCRYPT(
+ IN PARCFOURCONTEXT Ctx,
+ IN PUCHAR pDest,
+ IN PUCHAR pSrc,
+ IN UINT Len)
+{
+ UINT i;
+ //discard first 256 bytes
+ for (i = 0; i < 256; i++)
+ ARCFOUR_BYTE(Ctx);
+
+ for (i = 0; i < Len; i++)
+ pDest[i] = pSrc[i] ^ ARCFOUR_BYTE(Ctx);
+}
+
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Calculate a new FCS given the current FCS and the new data.
+
+ Arguments:
+ Fcs the original FCS value
+ Cp pointer to the data which will be calculate the FCS
+ Len the length of the data
+
+ Return Value:
+ UINT - FCS 32 bits
+
+ IRQL = DISPATCH_LEVEL
+
+ Note:
+
+ ========================================================================
+*/
+UINT RTMP_CALC_FCS32(
+ IN UINT Fcs,
+ IN PUCHAR Cp,
+ IN INT Len)
+{
+ while (Len--)
+ Fcs = (((Fcs) >> 8) ^ FCSTAB_32[((Fcs) ^ (*Cp++)) & 0xff]);
+
+ return (Fcs);
+}
+
+
+/*
+ ========================================================================
+
+ Routine Description:
+ Get last FCS and encrypt it to the destination
+
+ Arguments:
+ pDest Pointer to the Destination
+
+ Return Value:
+ None
+
+ Note:
+
+ ========================================================================
+*/
+VOID RTMPSetICV(
+ IN PRTMP_ADAPTER pAd,
+ IN PUCHAR pDest)
+{
+ pAd->PrivateInfo.FCSCRC32 ^= 0xffffffff; /* complement */
+ pAd->PrivateInfo.FCSCRC32 = cpu2le32(pAd->PrivateInfo.FCSCRC32);
+
+ ARCFOUR_ENCRYPT(&pAd->PrivateInfo.WEPCONTEXT, pDest, (PUCHAR) &pAd->PrivateInfo.FCSCRC32, 4);
+}
+
projects / linux-2.6-omap-h63xx.git / blobdiff