include/net/bluetooth/smp.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License version 2 as
   7    published by the Free Software Foundation;
   8
   9    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  10    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  11    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  12    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  13    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  14    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17
  18    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  19    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  20    SOFTWARE IS DISCLAIMED.
  21 */
  22
  23 #ifndef __SMP_H
  24 #define __SMP_H
  25
  26 struct smp_command_hdr {
  27         __u8    code;
  28 } __packed;
  29
  30 #define SMP_CMD_PAIRING_REQ     0x01
  31 #define SMP_CMD_PAIRING_RSP     0x02
  32 struct smp_cmd_pairing {
  33         __u8    io_capability;
  34         __u8    oob_flag;
  35         __u8    auth_req;
  36         __u8    max_key_size;
  37         __u8    init_key_dist;
  38         __u8    resp_key_dist;
  39 } __packed;
  40
  41 #define SMP_IO_DISPLAY_ONLY     0x00
  42 #define SMP_IO_DISPLAY_YESNO    0x01
  43 #define SMP_IO_KEYBOARD_ONLY    0x02
  44 #define SMP_IO_NO_INPUT_OUTPUT  0x03
  45 #define SMP_IO_KEYBOARD_DISPLAY 0x04
  46
  47 #define SMP_OOB_NOT_PRESENT     0x00
  48 #define SMP_OOB_PRESENT         0x01
  49
  50 #define SMP_DIST_ENC_KEY        0x01
  51 #define SMP_DIST_ID_KEY         0x02
  52 #define SMP_DIST_SIGN           0x04
  53
  54 #define SMP_AUTH_NONE           0x00
  55 #define SMP_AUTH_BONDING        0x01
  56 #define SMP_AUTH_MITM           0x04
  57
  58 #define SMP_CMD_PAIRING_CONFIRM 0x03
  59 struct smp_cmd_pairing_confirm {
  60         __u8    confirm_val[16];
  61 } __packed;
  62
  63 #define SMP_CMD_PAIRING_RANDOM  0x04
  64 struct smp_cmd_pairing_random {
  65         __u8    rand_val[16];
  66 } __packed;
  67
  68 #define SMP_CMD_PAIRING_FAIL    0x05
  69 struct smp_cmd_pairing_fail {
  70         __u8    reason;
  71 } __packed;
  72
  73 #define SMP_CMD_ENCRYPT_INFO    0x06
  74 struct smp_cmd_encrypt_info {
  75         __u8    ltk[16];
  76 } __packed;
  77
  78 #define SMP_CMD_MASTER_IDENT    0x07
  79 struct smp_cmd_master_ident {
  80         __le16  ediv;
  81         __u8    rand[8];
  82 } __packed;
  83
  84 #define SMP_CMD_IDENT_INFO      0x08
  85 struct smp_cmd_ident_info {
  86         __u8    irk[16];
  87 } __packed;
  88
  89 #define SMP_CMD_IDENT_ADDR_INFO 0x09
  90 struct smp_cmd_ident_addr_info {
  91         __u8    addr_type;
  92         bdaddr_t bdaddr;
  93 } __packed;
  94
  95 #define SMP_CMD_SIGN_INFO       0x0a
  96 struct smp_cmd_sign_info {
  97         __u8    csrk[16];
  98 } __packed;
  99
 100 #define SMP_CMD_SECURITY_REQ    0x0b
 101 struct smp_cmd_security_req {
 102         __u8    auth_req;
 103 } __packed;
 104
 105 #define SMP_PASSKEY_ENTRY_FAILED        0x01
 106 #define SMP_OOB_NOT_AVAIL               0x02
 107 #define SMP_AUTH_REQUIREMENTS           0x03
 108 #define SMP_CONFIRM_FAILED              0x04
 109 #define SMP_PAIRING_NOTSUPP             0x05
 110 #define SMP_ENC_KEY_SIZE                0x06
 111 #define SMP_CMD_NOTSUPP         0x07
 112 #define SMP_UNSPECIFIED         0x08
 113 #define SMP_REPEATED_ATTEMPTS           0x09
 114
 115 #define SMP_MIN_ENC_KEY_SIZE            7
 116 #define SMP_MAX_ENC_KEY_SIZE            16
 117
 118 #define SMP_FLAG_TK_VALID       1
 119 #define SMP_FLAG_CFM_PENDING    2
 120 #define SMP_FLAG_MITM_AUTH      3
 121
 122 struct smp_chan {
 123         struct l2cap_conn *conn;
 124         u8              preq[7]; /* SMP Pairing Request */
 125         u8              prsp[7]; /* SMP Pairing Response */
 126         u8              prnd[16]; /* SMP Pairing Random (local) */
 127         u8              rrnd[16]; /* SMP Pairing Random (remote) */
 128         u8              pcnf[16]; /* SMP Pairing Confirm */
 129         u8              tk[16]; /* SMP Temporary Key */
 130         u8              enc_key_size;
 131         unsigned long   smp_flags;
 132         struct crypto_blkcipher *tfm;
 133         struct work_struct confirm;
 134         struct work_struct random;
 135
 136 };
 137
 138 /* SMP Commands */
 139 int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level);
 140 int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
 141 int smp_distribute_keys(struct l2cap_conn *conn, __u8 force);
 142 int smp_user_confirm_reply(struct hci_conn *conn, u16 mgmt_op, __le32 passkey);
 143
 144 void smp_chan_destroy(struct l2cap_conn *conn);
 145
 146 #endif /* __SMP_H */