linux/drivers/staging/r8188eu/include/rtw_security.h
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   1/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
   2/* Copyright(c) 2007 - 2011 Realtek Corporation. */
   3
   4#ifndef __RTW_SECURITY_H_
   5#define __RTW_SECURITY_H_
   6
   7#include "osdep_service.h"
   8#include "drv_types.h"
   9#include <crypto/arc4.h>
  10
  11#define _NO_PRIVACY_                    0x0
  12#define _WEP40_                         0x1
  13#define _TKIP_                          0x2
  14#define _TKIP_WTMIC_                    0x3
  15#define _AES_                           0x4
  16#define _WEP104_                        0x5
  17#define _SMS4_                          0x06
  18
  19#define _WPA_IE_ID_     0xdd
  20#define _WPA2_IE_ID_    0x30
  21
  22enum {
  23        ENCRYP_PROTOCOL_OPENSYS,   /* open system */
  24        ENCRYP_PROTOCOL_WEP,       /* WEP */
  25        ENCRYP_PROTOCOL_WPA,       /* WPA */
  26        ENCRYP_PROTOCOL_WPA2,      /* WPA2 */
  27        ENCRYP_PROTOCOL_WAPI,      /* WAPI: Not support in this version */
  28        ENCRYP_PROTOCOL_MAX
  29};
  30
  31#ifndef Ndis802_11AuthModeWPA2
  32#define Ndis802_11AuthModeWPA2 (Ndis802_11AuthModeWPANone + 1)
  33#endif
  34
  35#ifndef Ndis802_11AuthModeWPA2PSK
  36#define Ndis802_11AuthModeWPA2PSK (Ndis802_11AuthModeWPANone + 2)
  37#endif
  38
  39union pn48      {
  40        u64     val;
  41
  42#ifdef __LITTLE_ENDIAN
  43        struct {
  44                u8 TSC0;
  45                u8 TSC1;
  46                u8 TSC2;
  47                u8 TSC3;
  48                u8 TSC4;
  49                u8 TSC5;
  50                u8 TSC6;
  51                u8 TSC7;
  52        } _byte_;
  53
  54#elif defined(__BIG_ENDIAN)
  55
  56        struct {
  57                u8 TSC7;
  58                u8 TSC6;
  59                u8 TSC5;
  60                u8 TSC4;
  61                u8 TSC3;
  62                u8 TSC2;
  63                u8 TSC1;
  64                u8 TSC0;
  65        } _byte_;
  66#endif
  67};
  68
  69union Keytype {
  70        u8   skey[16];
  71        u32    lkey[4];
  72};
  73
  74struct rt_pmkid_list {
  75        u8      bUsed;
  76        u8      Bssid[6];
  77        u8      PMKID[16];
  78        u8      SsidBuf[33];
  79        u8      *ssid_octet;
  80        u16     ssid_length;
  81};
  82
  83struct security_priv {
  84        u32       dot11AuthAlgrthm;     /*  802.11 auth, could be open,
  85                                         * shared, 8021x and authswitch */
  86        u32       dot11PrivacyAlgrthm;  /*  This specify the privacy for
  87                                         * shared auth. algorithm. */
  88        /* WEP */
  89        u32       dot11PrivacyKeyIndex; /*  this is only valid for legendary
  90                                         * wep, 0~3 for key id.(tx key index) */
  91        union Keytype dot11DefKey[4];   /*  this is only valid for def. key */
  92        u32     dot11DefKeylen[4];
  93        u32 dot118021XGrpPrivacy;       /*  This specify the privacy algthm.
  94                                         * used for Grp key */
  95        u32     dot118021XGrpKeyid;     /*  key id used for Grp Key
  96                                         * ( tx key index) */
  97        union Keytype   dot118021XGrpKey[4];    /*  802.1x Group Key,
  98                                                 * for inx0 and inx1 */
  99        union Keytype   dot118021XGrptxmickey[4];
 100        union Keytype   dot118021XGrprxmickey[4];
 101        union pn48      dot11Grptxpn;           /* PN48 used for Grp Key xmit.*/
 102        union pn48      dot11Grprxpn;           /* PN48 used for Grp Key recv.*/
 103
 104        struct arc4_ctx xmit_arc4_ctx;
 105        struct arc4_ctx recv_arc4_ctx;
 106
 107        /* extend security capabilities for AP_MODE */
 108        unsigned int dot8021xalg;/* 0:disable, 1:psk, 2:802.1x */
 109        unsigned int wpa_psk;/* 0:disable, bit(0): WPA, bit(1):WPA2 */
 110        unsigned int wpa_group_cipher;
 111        unsigned int wpa2_group_cipher;
 112        unsigned int wpa_pairwise_cipher;
 113        unsigned int wpa2_pairwise_cipher;
 114        u8 wps_ie[MAX_WPS_IE_LEN];/* added in assoc req */
 115        int wps_ie_len;
 116        u8      binstallGrpkey;
 117        u8      busetkipkey;
 118        u8      bcheck_grpkey;
 119        u8      bgrpkey_handshake;
 120        s32     sw_encrypt;/* from registry_priv */
 121        s32     sw_decrypt;/* from registry_priv */
 122        s32     hw_decrypted;/* if the rx packets is hw_decrypted==false,i
 123                              * it means the hw has not been ready. */
 124
 125        /* keeps the auth_type & enc_status from upper layer
 126         * ioctl(wpa_supplicant or wzc) */
 127        u32 ndisauthtype;       /*  NDIS_802_11_AUTHENTICATION_MODE */
 128        u32 ndisencryptstatus;  /*  NDIS_802_11_ENCRYPTION_STATUS */
 129        struct wlan_bssid_ex sec_bss;  /* for joinbss (h2c buffer) usage */
 130        struct ndis_802_11_wep ndiswep;
 131        u8 assoc_info[600];
 132        u8 szofcapability[256]; /* for wpa2 usage */
 133        u8 oidassociation[512]; /* for wpa/wpa2 usage */
 134        u8 authenticator_ie[256];  /* store ap security information element */
 135        u8 supplicant_ie[256];  /* store sta security information element */
 136
 137        /* for tkip countermeasure */
 138        u32 last_mic_err_time;
 139        u8      btkip_countermeasure;
 140        u8      btkip_wait_report;
 141        u32 btkip_countermeasure_time;
 142
 143        /*  */
 144        /*  For WPA2 Pre-Authentication. */
 145        /*  */
 146        struct rt_pmkid_list PMKIDList[NUM_PMKID_CACHE];
 147        u8      PMKIDIndex;
 148        u8 bWepDefaultKeyIdxSet;
 149};
 150
 151#define GET_ENCRY_ALGO(psecuritypriv, psta, encry_algo, bmcst)          \
 152do {                                                                    \
 153        switch (psecuritypriv->dot11AuthAlgrthm) {                      \
 154        case dot11AuthAlgrthm_Open:                                     \
 155        case dot11AuthAlgrthm_Shared:                                   \
 156        case dot11AuthAlgrthm_Auto:                                     \
 157                encry_algo = (u8)psecuritypriv->dot11PrivacyAlgrthm;    \
 158                break;                                                  \
 159        case dot11AuthAlgrthm_8021X:                                    \
 160                if (bmcst)                                              \
 161                        encry_algo = (u8)psecuritypriv->dot118021XGrpPrivacy;\
 162                else                                                    \
 163                        encry_algo = (u8)psta->dot118021XPrivacy;       \
 164                break;                                                  \
 165        case dot11AuthAlgrthm_WAPI:                                     \
 166                encry_algo = (u8)psecuritypriv->dot11PrivacyAlgrthm;    \
 167                break;                                                  \
 168        }                                                               \
 169} while (0)
 170
 171#define SET_ICE_IV_LEN(iv_len, icv_len, encrypt)                        \
 172do {                                                                    \
 173        switch (encrypt) {                                              \
 174        case _WEP40_:                                                   \
 175        case _WEP104_:                                                  \
 176                iv_len = 4;                                             \
 177                icv_len = 4;                                            \
 178                break;                                                  \
 179        case _TKIP_:                                                    \
 180                iv_len = 8;                                             \
 181                icv_len = 4;                                            \
 182                break;                                                  \
 183        case _AES_:                                                     \
 184                iv_len = 8;                                             \
 185                icv_len = 8;                                            \
 186                break;                                                  \
 187        case _SMS4_:                                                    \
 188                iv_len = 18;                                            \
 189                icv_len = 16;                                           \
 190                break;                                                  \
 191        default:                                                        \
 192                iv_len = 0;                                             \
 193                icv_len = 0;                                            \
 194                break;                                                  \
 195        }                                                               \
 196} while (0)
 197
 198#define GET_TKIP_PN(iv, dot11txpn)                                      \
 199do {                                                                    \
 200        dot11txpn._byte_.TSC0 = iv[2];                                  \
 201        dot11txpn._byte_.TSC1 = iv[0];                                  \
 202        dot11txpn._byte_.TSC2 = iv[4];                                  \
 203        dot11txpn._byte_.TSC3 = iv[5];                                  \
 204        dot11txpn._byte_.TSC4 = iv[6];                                  \
 205        dot11txpn._byte_.TSC5 = iv[7];                                  \
 206} while (0)
 207
 208#define ROL32(A, n)     (((A) << (n)) | (((A)>>(32-(n)))  & ((1UL << (n)) - 1)))
 209#define ROR32(A, n)     ROL32((A), 32-(n))
 210
 211struct mic_data {
 212        u32  K0, K1;         /*  Key */
 213        u32  L, R;           /*  Current state */
 214        u32  M;              /*  Message accumulator (single word) */
 215        u32  nBytesInM;      /*  # bytes in M */
 216};
 217
 218void rtw_secmicsetkey(struct mic_data *pmicdata, u8 *key);
 219void rtw_secmicappendbyte(struct mic_data *pmicdata, u8 b);
 220void rtw_secmicappend(struct mic_data *pmicdata, u8 *src, u32 nBytes);
 221void rtw_secgetmic(struct mic_data *pmicdata, u8 *dst);
 222void rtw_seccalctkipmic(u8 *key, u8 *header, u8 *data, u32 data_len,
 223                        u8 *Miccode, u8   priority);
 224u32 rtw_aes_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
 225u32 rtw_tkip_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
 226void rtw_wep_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
 227u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
 228u32 rtw_tkip_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
 229void rtw_wep_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
 230
 231#endif  /* __RTL871X_SECURITY_H_ */
 232
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