linux/drivers/staging/rtl8188eu/include/rtw_security.h
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   1/******************************************************************************
   2 *
   3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of version 2 of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12 * more details.
  13 *
  14 ******************************************************************************/
  15#ifndef __RTW_SECURITY_H_
  16#define __RTW_SECURITY_H_
  17
  18#include <osdep_service.h>
  19#include <drv_types.h>
  20
  21#define _NO_PRIVACY_                    0x0
  22#define _WEP40_                         0x1
  23#define _TKIP_                          0x2
  24#define _TKIP_WTMIC_                    0x3
  25#define _AES_                           0x4
  26#define _WEP104_                        0x5
  27#define _WEP_WPA_MIXED_                 0x07  /*  WEP + WPA */
  28#define _SMS4_                          0x06
  29
  30#define is_wep_enc(alg) (((alg) == _WEP40_) || ((alg) == _WEP104_))
  31
  32#define _WPA_IE_ID_     0xdd
  33#define _WPA2_IE_ID_    0x30
  34
  35#define SHA256_MAC_LEN 32
  36#define AES_BLOCK_SIZE 16
  37#define AES_PRIV_SIZE (4 * 44)
  38
  39enum {
  40        ENCRYP_PROTOCOL_OPENSYS,   /* open system */
  41        ENCRYP_PROTOCOL_WEP,       /* WEP */
  42        ENCRYP_PROTOCOL_WPA,       /* WPA */
  43        ENCRYP_PROTOCOL_WPA2,      /* WPA2 */
  44        ENCRYP_PROTOCOL_WAPI,      /* WAPI: Not support in this version */
  45        ENCRYP_PROTOCOL_MAX
  46};
  47
  48
  49#ifndef Ndis802_11AuthModeWPA2
  50#define Ndis802_11AuthModeWPA2 (Ndis802_11AuthModeWPANone + 1)
  51#endif
  52
  53#ifndef Ndis802_11AuthModeWPA2PSK
  54#define Ndis802_11AuthModeWPA2PSK (Ndis802_11AuthModeWPANone + 2)
  55#endif
  56
  57union pn48      {
  58        u64     val;
  59
  60#ifdef __LITTLE_ENDIAN
  61        struct {
  62                u8 TSC0;
  63                u8 TSC1;
  64                u8 TSC2;
  65                u8 TSC3;
  66                u8 TSC4;
  67                u8 TSC5;
  68                u8 TSC6;
  69                u8 TSC7;
  70        } _byte_;
  71
  72#elif defined(__BIG_ENDIAN)
  73
  74        struct {
  75                u8 TSC7;
  76                u8 TSC6;
  77                u8 TSC5;
  78                u8 TSC4;
  79                u8 TSC3;
  80                u8 TSC2;
  81                u8 TSC1;
  82                u8 TSC0;
  83        } _byte_;
  84#endif
  85};
  86
  87union Keytype {
  88        u8   skey[16];
  89        u32    lkey[4];
  90};
  91
  92struct rt_pmkid_list {
  93        u8      bUsed;
  94        u8      Bssid[6];
  95        u8      PMKID[16];
  96        u8      SsidBuf[33];
  97        u8      *ssid_octet;
  98        u16     ssid_length;
  99};
 100
 101struct security_priv {
 102        u32       dot11AuthAlgrthm;     /*  802.11 auth, could be open,
 103                                         * shared, 8021x and authswitch */
 104        u32       dot11PrivacyAlgrthm;  /*  This specify the privacy for
 105                                         * shared auth. algorithm. */
 106        /* WEP */
 107        u32       dot11PrivacyKeyIndex; /*  this is only valid for legendary
 108                                         * wep, 0~3 for key id.(tx key index) */
 109        union Keytype dot11DefKey[4];   /*  this is only valid for def. key */
 110        u32     dot11DefKeylen[4];
 111        u32 dot118021XGrpPrivacy;       /*  This specify the privacy algthm.
 112                                         * used for Grp key */
 113        u32     dot118021XGrpKeyid;     /*  key id used for Grp Key
 114                                         * ( tx key index) */
 115        union Keytype   dot118021XGrpKey[4];    /*  802.1x Group Key,
 116                                                 * for inx0 and inx1 */
 117        union Keytype   dot118021XGrptxmickey[4];
 118        union Keytype   dot118021XGrprxmickey[4];
 119        union pn48      dot11Grptxpn;           /* PN48 used for Grp Key xmit.*/
 120        union pn48      dot11Grprxpn;           /* PN48 used for Grp Key recv.*/
 121#ifdef CONFIG_88EU_AP_MODE
 122        /* extend security capabilities for AP_MODE */
 123        unsigned int dot8021xalg;/* 0:disable, 1:psk, 2:802.1x */
 124        unsigned int wpa_psk;/* 0:disable, bit(0): WPA, bit(1):WPA2 */
 125        unsigned int wpa_group_cipher;
 126        unsigned int wpa2_group_cipher;
 127        unsigned int wpa_pairwise_cipher;
 128        unsigned int wpa2_pairwise_cipher;
 129#endif
 130        u8 wps_ie[MAX_WPS_IE_LEN];/* added in assoc req */
 131        int wps_ie_len;
 132        u8      binstallGrpkey;
 133        u8      busetkipkey;
 134        u8      bcheck_grpkey;
 135        u8      bgrpkey_handshake;
 136        s32     hw_decrypted;/* if the rx packets is hw_decrypted==false,i
 137                              * it means the hw has not been ready. */
 138
 139        /* keeps the auth_type & enc_status from upper layer
 140         * ioctl(wpa_supplicant or wzc) */
 141        u32 ndisauthtype;       /*  NDIS_802_11_AUTHENTICATION_MODE */
 142        u32 ndisencryptstatus;  /*  NDIS_802_11_ENCRYPTION_STATUS */
 143        struct wlan_bssid_ex sec_bss;  /* for joinbss (h2c buffer) usage */
 144        struct ndis_802_11_wep ndiswep;
 145        u8 assoc_info[600];
 146        u8 szofcapability[256]; /* for wpa2 usage */
 147        u8 oidassociation[512]; /* for wpa/wpa2 usage */
 148        u8 authenticator_ie[256];  /* store ap security information element */
 149        u8 supplicant_ie[256];  /* store sta security information element */
 150
 151        /* for tkip countermeasure */
 152        u32 last_mic_err_time;
 153        u8      btkip_countermeasure;
 154        u8      btkip_wait_report;
 155        u32 btkip_countermeasure_time;
 156
 157        /*  */
 158        /*  For WPA2 Pre-Authentication. */
 159        /*  */
 160        struct rt_pmkid_list PMKIDList[NUM_PMKID_CACHE];
 161        u8      PMKIDIndex;
 162        u8 bWepDefaultKeyIdxSet;
 163};
 164
 165#define GET_ENCRY_ALGO(psecuritypriv, psta, encry_algo, bmcst)          \
 166do {                                                                    \
 167        switch (psecuritypriv->dot11AuthAlgrthm) {                      \
 168        case dot11AuthAlgrthm_Open:                                     \
 169        case dot11AuthAlgrthm_Shared:                                   \
 170        case dot11AuthAlgrthm_Auto:                                     \
 171                encry_algo = (u8)psecuritypriv->dot11PrivacyAlgrthm;    \
 172                break;                                                  \
 173        case dot11AuthAlgrthm_8021X:                                    \
 174                if (bmcst)                                              \
 175                        encry_algo = (u8)psecuritypriv->dot118021XGrpPrivacy;\
 176                else                                                    \
 177                        encry_algo = (u8)psta->dot118021XPrivacy;       \
 178                break;                                                  \
 179        case dot11AuthAlgrthm_WAPI:                                     \
 180                encry_algo = (u8)psecuritypriv->dot11PrivacyAlgrthm;    \
 181                break;                                                  \
 182        }                                                               \
 183} while (0)
 184
 185#define SET_ICE_IV_LEN(iv_len, icv_len, encrypt)                        \
 186do {                                                                    \
 187        switch (encrypt) {                                              \
 188        case _WEP40_:                                                   \
 189        case _WEP104_:                                                  \
 190                iv_len = 4;                                             \
 191                icv_len = 4;                                            \
 192                break;                                                  \
 193        case _TKIP_:                                                    \
 194                iv_len = 8;                                             \
 195                icv_len = 4;                                            \
 196                break;                                                  \
 197        case _AES_:                                                     \
 198                iv_len = 8;                                             \
 199                icv_len = 8;                                            \
 200                break;                                                  \
 201        case _SMS4_:                                                    \
 202                iv_len = 18;                                            \
 203                icv_len = 16;                                           \
 204                break;                                                  \
 205        default:                                                        \
 206                iv_len = 0;                                             \
 207                icv_len = 0;                                            \
 208                break;                                                  \
 209        }                                                               \
 210} while (0)
 211
 212
 213#define GET_TKIP_PN(iv, dot11txpn)                                      \
 214do {                                                                    \
 215        dot11txpn._byte_.TSC0 = iv[2];                                  \
 216        dot11txpn._byte_.TSC1 = iv[0];                                  \
 217        dot11txpn._byte_.TSC2 = iv[4];                                  \
 218        dot11txpn._byte_.TSC3 = iv[5];                                  \
 219        dot11txpn._byte_.TSC4 = iv[6];                                  \
 220        dot11txpn._byte_.TSC5 = iv[7];                                  \
 221} while (0)
 222
 223
 224#define ROL32(A, n)     (((A) << (n)) | (((A)>>(32-(n)))  & ((1UL << (n)) - 1)))
 225#define ROR32(A, n)     ROL32((A), 32-(n))
 226
 227struct mic_data {
 228        u32  K0, K1;         /*  Key */
 229        u32  L, R;           /*  Current state */
 230        u32  M;              /*  Message accumulator (single word) */
 231        u32  nBytesInM;      /*  # bytes in M */
 232};
 233
 234extern const u32 Te0[256];
 235extern const u32 Td0[256];
 236extern const u32 Td1[256];
 237extern const u32 Td2[256];
 238extern const u32 Td3[256];
 239extern const u32 Td4[256];
 240extern const u32 rcon[10];
 241extern const u8 Td4s[256];
 242extern const u8 rcons[10];
 243
 244#define RCON(i) (rcons[(i)] << 24)
 245
 246static inline u32 rotr(u32 val, int bits)
 247{
 248        return (val >> bits) | (val << (32 - bits));
 249}
 250
 251#define TE0(i) Te0[((i) >> 24) & 0xff]
 252#define TE1(i) rotr(Te0[((i) >> 16) & 0xff], 8)
 253#define TE2(i) rotr(Te0[((i) >> 8) & 0xff], 16)
 254#define TE3(i) rotr(Te0[(i) & 0xff], 24)
 255
 256/* ===== start - public domain SHA256 implementation ===== */
 257
 258/* This is based on SHA256 implementation in LibTomCrypt that was released into
 259 * public domain by Tom St Denis. */
 260
 261/* the K array */
 262static const unsigned long K[64] = {
 263        0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
 264        0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
 265        0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
 266        0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
 267        0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
 268        0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
 269        0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
 270        0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
 271        0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
 272        0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
 273        0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
 274        0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
 275        0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
 276};
 277
 278/* Various logical functions */
 279#define RORc(x, y) \
 280        (((((unsigned long)(x) & 0xFFFFFFFFUL) >> (unsigned long)((y)&31)) | \
 281         ((unsigned long)(x) << (unsigned long)(32-((y)&31)))) & 0xFFFFFFFFUL)
 282#define Ch(x, y, z)       (z ^ (x & (y ^ z)))
 283#define Maj(x, y, z)      (((x | y) & z) | (x & y))
 284#define S(x, n)         RORc((x), (n))
 285#define R(x, n)         (((x)&0xFFFFFFFFUL)>>(n))
 286#define Sigma0(x)       (S(x, 2) ^ S(x, 13) ^ S(x, 22))
 287#define Sigma1(x)       (S(x, 6) ^ S(x, 11) ^ S(x, 25))
 288#define Gamma0(x)       (S(x, 7) ^ S(x, 18) ^ R(x, 3))
 289#define Gamma1(x)       (S(x, 17) ^ S(x, 19) ^ R(x, 10))
 290
 291void rtw_secmicsetkey(struct mic_data *pmicdata, u8 *key);
 292void rtw_secmicappendbyte(struct mic_data *pmicdata, u8 b);
 293void rtw_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nBytes);
 294void rtw_secgetmic(struct mic_data *pmicdata, u8 *dst);
 295void rtw_seccalctkipmic(u8 *key, u8 *header, u8 *data, u32 data_len,
 296                        u8 *Miccode, u8   priority);
 297u32 rtw_aes_encrypt(struct adapter *padapter, u8 *pxmitframe);
 298u32 rtw_tkip_encrypt(struct adapter *padapter, u8 *pxmitframe);
 299void rtw_wep_encrypt(struct adapter *padapter, u8  *pxmitframe);
 300u32 rtw_aes_decrypt(struct adapter *padapter, u8  *precvframe);
 301u32 rtw_tkip_decrypt(struct adapter *padapter, u8  *precvframe);
 302void rtw_wep_decrypt(struct adapter *padapter, u8  *precvframe);
 303
 304#endif  /* __RTL871X_SECURITY_H_ */
 305
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