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   1 /*
   2  *************************************************************************
   3  * Ralink Tech Inc.
   4  * 5F., No.36, Taiyuan St., Jhubei City,
   5  * Hsinchu County 302,
   6  * Taiwan, R.O.C.
   7  *
   8  * (c) Copyright 2002-2007, Ralink Technology, Inc.
   9  *
  10  * This program is free software; you can redistribute it and/or modify  *
  11  * it under the terms of the GNU General Public License as published by  *
  12  * the Free Software Foundation; either version 2 of the License, or     *
  13  * (at your option) any later version.                                   *
  14  *                                                                       *
  15  * This program is distributed in the hope that it will be useful,       *
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  18  * GNU General Public License for more details.                          *
  19  *                                                                       *
  20  * You should have received a copy of the GNU General Public License     *
  21  * along with this program; if not, write to the                         *
  22  * Free Software Foundation, Inc.,                                       *
  23  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  24  *                                                                       *
  25  *************************************************************************
  26
  27         Module Name:
  28         wpa.h
  29
  30         Abstract:
  31
  32         Revision History:
  33         Who                     When                    What
  34         --------        ----------              ----------------------------------------------
  35         Name            Date                    Modification logs
  36 */
  37
  38 #ifndef __WPA_H__
  39 #define __WPA_H__
  40
  41 // EAPOL Key descripter frame format related length
  42 #define LEN_KEY_DESC_NONCE                      32
  43 #define LEN_KEY_DESC_IV                         16
  44 #define LEN_KEY_DESC_RSC                        8
  45 #define LEN_KEY_DESC_ID                         8
  46 #define LEN_KEY_DESC_REPLAY                     8
  47 #define LEN_KEY_DESC_MIC                        16
  48
  49 // The length is the EAPoL-Key frame except key data field.
  50 // Please refer to 802.11i-2004 ,Figure 43u in p.78
  51 #define LEN_EAPOL_KEY_MSG                       (sizeof(KEY_DESCRIPTER) - MAX_LEN_OF_RSNIE)
  52
  53 // EAP Code Type.
  54 #define EAP_CODE_REQUEST        1
  55 #define EAP_CODE_RESPONSE       2
  56 #define EAP_CODE_SUCCESS    3
  57 #define EAP_CODE_FAILURE    4
  58
  59 // EAPOL frame Protocol Version
  60 #define EAPOL_VER                                       1
  61 #define EAPOL_VER2                                      2
  62
  63 // EAPOL-KEY Descriptor Type
  64 #define WPA1_KEY_DESC                           0xfe
  65 #define WPA2_KEY_DESC               0x02
  66
  67 // Key Descriptor Version of Key Information
  68 #define DESC_TYPE_TKIP                          1
  69 #define DESC_TYPE_AES                           2
  70 #define DESC_TYPE_MESH                          3
  71
  72 #define LEN_MSG1_2WAY               0x7f
  73 #define MAX_LEN_OF_EAP_HS           256
  74
  75 #define LEN_MASTER_KEY                          32
  76
  77 // EAPOL EK, MK
  78 #define LEN_EAP_EK                                      16
  79 #define LEN_EAP_MICK                            16
  80 #define LEN_EAP_KEY                                     ((LEN_EAP_EK)+(LEN_EAP_MICK))
  81 // TKIP key related
  82 #define LEN_PMKID                                       16
  83 #define LEN_TKIP_EK                                     16
  84 #define LEN_TKIP_RXMICK                         8
  85 #define LEN_TKIP_TXMICK                         8
  86 #define LEN_AES_EK                                      16
  87 #define LEN_AES_KEY                                     LEN_AES_EK
  88 #define LEN_TKIP_KEY                            ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  89 #define TKIP_AP_TXMICK_OFFSET           ((LEN_EAP_KEY)+(LEN_TKIP_EK))
  90 #define TKIP_AP_RXMICK_OFFSET           (TKIP_AP_TXMICK_OFFSET+LEN_TKIP_TXMICK)
  91 #define TKIP_GTK_LENGTH                         ((LEN_TKIP_EK)+(LEN_TKIP_RXMICK)+(LEN_TKIP_TXMICK))
  92 #define LEN_PTK                                         ((LEN_EAP_KEY)+(LEN_TKIP_KEY))
  93
  94 // RSN IE Length definition
  95 #define MAX_LEN_OF_RSNIE                90
  96 #define MIN_LEN_OF_RSNIE                8
  97
  98 //EAP Packet Type
  99 #define EAPPacket               0
 100 #define EAPOLStart              1
 101 #define EAPOLLogoff             2
 102 #define EAPOLKey                3
 103 #define EAPOLASFAlert   4
 104 #define EAPTtypeMax             5
 105
 106 #define EAPOL_MSG_INVALID       0
 107 #define EAPOL_PAIR_MSG_1        1
 108 #define EAPOL_PAIR_MSG_2        2
 109 #define EAPOL_PAIR_MSG_3        3
 110 #define EAPOL_PAIR_MSG_4        4
 111 #define EAPOL_GROUP_MSG_1       5
 112 #define EAPOL_GROUP_MSG_2       6
 113
 114 #define PAIRWISEKEY                                     1
 115 #define GROUPKEY                                        0
 116
 117 // Retry timer counter initial value
 118 #define PEER_MSG1_RETRY_TIMER_CTR           0
 119 #define PEER_MSG3_RETRY_TIMER_CTR           10
 120 #define GROUP_MSG1_RETRY_TIMER_CTR          20
 121
 122
 123 #define EAPOL_START_DISABLE                                     0
 124 #define EAPOL_START_PSK                                         1
 125 #define EAPOL_START_1X                                          2
 126
 127 #define MIX_CIPHER_WPA_TKIP_ON(x)       (((x) & 0x08) != 0)
 128 #define MIX_CIPHER_WPA_AES_ON(x)        (((x) & 0x04) != 0)
 129 #define MIX_CIPHER_WPA2_TKIP_ON(x)      (((x) & 0x02) != 0)
 130 #define MIX_CIPHER_WPA2_AES_ON(x)       (((x) & 0x01) != 0)
 131
 132 #define ROUND_UP(__x, __y) \
 133         (((ULONG)((__x)+((__y)-1))) & ((ULONG)~((__y)-1)))
 134
 135 #define ADD_ONE_To_64BIT_VAR(_V)                \
 136 {                                                                               \
 137         UCHAR   cnt = LEN_KEY_DESC_REPLAY;      \
 138         do                                                                      \
 139         {                                                                       \
 140                 cnt--;                                                  \
 141                 _V[cnt]++;                                              \
 142                 if (cnt == 0)                                   \
 143                         break;                                          \
 144         }while (_V[cnt] == 0);                          \
 145 }
 146
 147 #define IS_WPA_CAPABILITY(a)       (((a) >= Ndis802_11AuthModeWPA) && ((a) <= Ndis802_11AuthModeWPA1PSKWPA2PSK))
 148
 149 // EAPOL Key Information definition within Key descriptor format
 150 typedef struct PACKED _KEY_INFO
 151 {
 152 #ifdef RT_BIG_ENDIAN
 153         UCHAR   KeyAck:1;
 154     UCHAR       Install:1;
 155     UCHAR       KeyIndex:2;
 156     UCHAR       KeyType:1;
 157     UCHAR       KeyDescVer:3;
 158     UCHAR       Rsvd:3;
 159     UCHAR       EKD_DL:1;               // EKD for AP; DL for STA
 160     UCHAR       Request:1;
 161     UCHAR       Error:1;
 162     UCHAR       Secure:1;
 163     UCHAR       KeyMic:1;
 164 #else
 165         UCHAR   KeyMic:1;
 166         UCHAR   Secure:1;
 167         UCHAR   Error:1;
 168         UCHAR   Request:1;
 169         UCHAR   EKD_DL:1;       // EKD for AP; DL for STA
 170         UCHAR   Rsvd:3;
 171         UCHAR   KeyDescVer:3;
 172         UCHAR   KeyType:1;
 173         UCHAR   KeyIndex:2;
 174         UCHAR   Install:1;
 175         UCHAR   KeyAck:1;
 176 #endif
 177 }       KEY_INFO, *PKEY_INFO;
 178
 179 // EAPOL Key descriptor format
 180 typedef struct PACKED _KEY_DESCRIPTER
 181 {
 182         UCHAR           Type;
 183         KEY_INFO        KeyInfo;
 184         UCHAR           KeyLength[2];
 185         UCHAR           ReplayCounter[LEN_KEY_DESC_REPLAY];
 186         UCHAR           KeyNonce[LEN_KEY_DESC_NONCE];
 187         UCHAR           KeyIv[LEN_KEY_DESC_IV];
 188         UCHAR           KeyRsc[LEN_KEY_DESC_RSC];
 189         UCHAR           KeyId[LEN_KEY_DESC_ID];
 190         UCHAR           KeyMic[LEN_KEY_DESC_MIC];
 191         UCHAR           KeyDataLen[2];
 192         UCHAR           KeyData[MAX_LEN_OF_RSNIE];
 193 }       KEY_DESCRIPTER, *PKEY_DESCRIPTER;
 194
 195 typedef struct PACKED _EAPOL_PACKET
 196 {
 197         UCHAR                           ProVer;
 198         UCHAR                           ProType;
 199         UCHAR                           Body_Len[2];
 200         KEY_DESCRIPTER          KeyDesc;
 201 }       EAPOL_PACKET, *PEAPOL_PACKET;
 202
 203 //802.11i D10 page 83
 204 typedef struct PACKED _GTK_ENCAP
 205 {
 206 #ifndef RT_BIG_ENDIAN
 207     UCHAR               Kid:2;
 208     UCHAR               tx:1;
 209     UCHAR               rsv:5;
 210     UCHAR               rsv1;
 211 #else
 212     UCHAR               rsv:5;
 213     UCHAR               tx:1;
 214     UCHAR               Kid:2;
 215     UCHAR               rsv1;
 216 #endif
 217     UCHAR               GTK[TKIP_GTK_LENGTH];
 218 }   GTK_ENCAP, *PGTK_ENCAP;
 219
 220 typedef struct PACKED _KDE_ENCAP
 221 {
 222     UCHAR               Type;
 223     UCHAR               Len;
 224     UCHAR               OUI[3];
 225     UCHAR               DataType;
 226     GTK_ENCAP      GTKEncap;
 227 }   KDE_ENCAP, *PKDE_ENCAP;
 228
 229 // For WPA1
 230 typedef struct PACKED _RSNIE {
 231     UCHAR   oui[4];
 232     USHORT  version;
 233     UCHAR   mcast[4];
 234     USHORT  ucount;
 235     struct PACKED {
 236         UCHAR oui[4];
 237     }ucast[1];
 238 } RSNIE, *PRSNIE;
 239
 240 // For WPA2
 241 typedef struct PACKED _RSNIE2 {
 242     USHORT  version;
 243     UCHAR   mcast[4];
 244     USHORT  ucount;
 245     struct PACKED {
 246         UCHAR oui[4];
 247     }ucast[1];
 248 } RSNIE2, *PRSNIE2;
 249
 250 // AKM Suite
 251 typedef struct PACKED _RSNIE_AUTH {
 252     USHORT acount;
 253     struct PACKED {
 254         UCHAR oui[4];
 255     }auth[1];
 256 } RSNIE_AUTH,*PRSNIE_AUTH;
 257
 258 typedef union PACKED _RSN_CAPABILITIES  {
 259         struct  PACKED {
 260 #ifdef RT_BIG_ENDIAN
 261         USHORT          Rsvd:10;
 262         USHORT          GTKSA_R_Counter:2;
 263         USHORT          PTKSA_R_Counter:2;
 264         USHORT          No_Pairwise:1;
 265                 USHORT          PreAuth:1;
 266 #else
 267         USHORT          PreAuth:1;
 268                 USHORT          No_Pairwise:1;
 269                 USHORT          PTKSA_R_Counter:2;
 270                 USHORT          GTKSA_R_Counter:2;
 271                 USHORT          Rsvd:10;
 272 #endif
 273         }       field;
 274         USHORT                  word;
 275 }       RSN_CAPABILITIES, *PRSN_CAPABILITIES;
 276
 277 typedef struct PACKED _EAP_HDR {
 278     UCHAR   ProVer;
 279     UCHAR   ProType;
 280     UCHAR   Body_Len[2];
 281     UCHAR   code;
 282     UCHAR   identifier;
 283     UCHAR   length[2]; // including code and identifier, followed by length-2 octets of data
 284 } EAP_HDR, *PEAP_HDR;
 285
 286 // For supplicant state machine states. 802.11i Draft 4.1, p. 97
 287 // We simplified it
 288 typedef enum    _WpaState
 289 {
 290         SS_NOTUSE,                              // 0
 291         SS_START,                               // 1
 292         SS_WAIT_MSG_3,                  // 2
 293         SS_WAIT_GROUP,                  // 3
 294         SS_FINISH,                      // 4
 295         SS_KEYUPDATE,                   // 5
 296 }       WPA_STATE;
 297
 298 //
 299 //      The definition of the cipher combination
 300 //
 301 //       bit3   bit2  bit1   bit0
 302 //      +------------+------------+
 303 //      |         WPA    |         WPA2   |
 304 //      +------+-----+------+-----+
 305 //      | TKIP | AES | TKIP | AES |
 306 //      |       0  |  1  |   1  |  0  | -> 0x06
 307 //      |       0  |  1  |   1  |  1  | -> 0x07
 308 //      |       1  |  0  |   0  |  1  | -> 0x09
 309 //      |       1  |  0  |   1  |  1  | -> 0x0B
 310 //      |       1  |  1  |   0  |  1  | -> 0x0D
 311 //      |       1  |  1  |   1  |  0  | -> 0x0E
 312 //      |       1  |  1  |   1  |  1  | -> 0x0F
 313 //      +------+-----+------+-----+
 314 //
 315 typedef enum    _WpaMixPairCipher
 316 {
 317         MIX_CIPHER_NOTUSE                       = 0x00,
 318         WPA_NONE_WPA2_TKIPAES           = 0x03,         // WPA2-TKIPAES
 319         WPA_AES_WPA2_TKIP                       = 0x06,
 320         WPA_AES_WPA2_TKIPAES            = 0x07,
 321         WPA_TKIP_WPA2_AES                       = 0x09,
 322         WPA_TKIP_WPA2_TKIPAES           = 0x0B,
 323         WPA_TKIPAES_WPA2_NONE           = 0x0C,         // WPA-TKIPAES
 324         WPA_TKIPAES_WPA2_AES            = 0x0D,
 325         WPA_TKIPAES_WPA2_TKIP           = 0x0E,
 326         WPA_TKIPAES_WPA2_TKIPAES        = 0x0F,
 327 }       WPA_MIX_PAIR_CIPHER;
 328
 329 typedef struct PACKED _RSN_IE_HEADER_STRUCT     {
 330         UCHAR           Eid;
 331         UCHAR           Length;
 332         USHORT          Version;        // Little endian format
 333 }       RSN_IE_HEADER_STRUCT, *PRSN_IE_HEADER_STRUCT;
 334
 335 // Cipher suite selector types
 336 typedef struct PACKED _CIPHER_SUITE_STRUCT      {
 337         UCHAR           Oui[3];
 338         UCHAR           Type;
 339 }       CIPHER_SUITE_STRUCT, *PCIPHER_SUITE_STRUCT;
 340
 341 // Authentication and Key Management suite selector
 342 typedef struct PACKED _AKM_SUITE_STRUCT {
 343         UCHAR           Oui[3];
 344         UCHAR           Type;
 345 }       AKM_SUITE_STRUCT, *PAKM_SUITE_STRUCT;
 346
 347 // RSN capability
 348 typedef struct  PACKED _RSN_CAPABILITY  {
 349         USHORT          Rsv:10;
 350         USHORT          GTKSAReplayCnt:2;
 351         USHORT          PTKSAReplayCnt:2;
 352         USHORT          NoPairwise:1;
 353         USHORT          PreAuth:1;
 354 }       RSN_CAPABILITY, *PRSN_CAPABILITY;
 355
 356 #endif