stack/include/smp_api_types.h

/******************************************************************************
 *
 *  Copyright 1999-2012 Broadcom Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at:
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 ******************************************************************************/

#ifndef SMP_API_TYPES_H
#define SMP_API_TYPES_H

#include "bt_target.h"

#define SMP_PIN_CODE_LEN_MAX PIN_CODE_LEN
#define SMP_PIN_CODE_LEN_MIN 6

/* SMP command code */
#define SMP_OPCODE_PAIRING_REQ 0x01
#define SMP_OPCODE_PAIRING_RSP 0x02
#define SMP_OPCODE_CONFIRM 0x03
#define SMP_OPCODE_RAND 0x04
#define SMP_OPCODE_PAIRING_FAILED 0x05
#define SMP_OPCODE_ENCRYPT_INFO 0x06
#define SMP_OPCODE_MASTER_ID 0x07
#define SMP_OPCODE_IDENTITY_INFO 0x08
#define SMP_OPCODE_ID_ADDR 0x09
#define SMP_OPCODE_SIGN_INFO 0x0A
#define SMP_OPCODE_SEC_REQ 0x0B
#define SMP_OPCODE_PAIR_PUBLIC_KEY 0x0C
#define SMP_OPCODE_PAIR_DHKEY_CHECK 0x0D
#define SMP_OPCODE_PAIR_KEYPR_NOTIF 0x0E
#define SMP_OPCODE_MAX SMP_OPCODE_PAIR_KEYPR_NOTIF
#define SMP_OPCODE_MIN SMP_OPCODE_PAIRING_REQ
#define SMP_OPCODE_PAIR_COMMITM 0x0F

/* SMP event type */
#define SMP_IO_CAP_REQ_EVT 1     /* IO capability request event */
#define SMP_SEC_REQUEST_EVT 2    /* SMP pairing request */
#define SMP_PASSKEY_NOTIF_EVT 3  /* passkey notification event */
#define SMP_PASSKEY_REQ_EVT 4    /* passkey request event */
#define SMP_OOB_REQ_EVT 5        /* OOB request event */
#define SMP_NC_REQ_EVT 6         /* Numeric Comparison request event */
#define SMP_COMPLT_EVT 7         /* SMP complete event */
#define SMP_PEER_KEYPR_NOT_EVT 8 /* Peer keypress notification */

/* SC OOB request event (both local and peer OOB data can be expected in
 * response) */
#define SMP_SC_OOB_REQ_EVT 9
/* SC OOB local data set is created (as result of SMP_CrLocScOobData(...)) */
#define SMP_SC_LOC_OOB_DATA_UP_EVT 10
#define SMP_BR_KEYS_REQ_EVT 12 /* SMP over BR keys request event */
#define SMP_CONSENT_REQ_EVT 14 /* Consent request event */
typedef uint8_t tSMP_EVT;

/* pairing failure reason code */
#define SMP_PASSKEY_ENTRY_FAIL 0x01
#define SMP_OOB_FAIL 0x02
#define SMP_PAIR_AUTH_FAIL 0x03
#define SMP_CONFIRM_VALUE_ERR 0x04
#define SMP_PAIR_NOT_SUPPORT 0x05
#define SMP_ENC_KEY_SIZE 0x06
#define SMP_INVALID_CMD 0x07
#define SMP_PAIR_FAIL_UNKNOWN 0x08
#define SMP_REPEATED_ATTEMPTS 0x09
#define SMP_INVALID_PARAMETERS 0x0A
#define SMP_DHKEY_CHK_FAIL 0x0B
#define SMP_NUMERIC_COMPAR_FAIL 0x0C
#define SMP_BR_PARING_IN_PROGR 0x0D
#define SMP_XTRANS_DERIVE_NOT_ALLOW 0x0E
#define SMP_MAX_FAIL_RSN_PER_SPEC SMP_XTRANS_DERIVE_NOT_ALLOW

/* self defined error code */
#define SMP_PAIR_INTERNAL_ERR (SMP_MAX_FAIL_RSN_PER_SPEC + 0x01) /* 0x0F */

/* Unknown IO capability, unable to decide association model */
#define SMP_UNKNOWN_IO_CAP (SMP_MAX_FAIL_RSN_PER_SPEC + 0x02) /* 0x10 */

#define SMP_INIT_FAIL (SMP_MAX_FAIL_RSN_PER_SPEC + 0x03)     /* 0x11 */
#define SMP_CONFIRM_FAIL (SMP_MAX_FAIL_RSN_PER_SPEC + 0x04)  /* 0x12 */
#define SMP_BUSY (SMP_MAX_FAIL_RSN_PER_SPEC + 0x05)          /* 0x13 */
#define SMP_ENC_FAIL (SMP_MAX_FAIL_RSN_PER_SPEC + 0x06)      /* 0x14 */
#define SMP_STARTED (SMP_MAX_FAIL_RSN_PER_SPEC + 0x07)       /* 0x15 */
#define SMP_RSP_TIMEOUT (SMP_MAX_FAIL_RSN_PER_SPEC + 0x08)   /* 0x16 */
#define SMP_DIV_NOT_AVAIL (SMP_MAX_FAIL_RSN_PER_SPEC + 0x09) /* 0x17 */

/* Unspecified failure reason */
#define SMP_FAIL (SMP_MAX_FAIL_RSN_PER_SPEC + 0x0A) /* 0x18 */

#define SMP_CONN_TOUT (SMP_MAX_FAIL_RSN_PER_SPEC + 0x0B) /* 0x19 */
#define SMP_SUCCESS 0

typedef uint8_t tSMP_STATUS;

/* Device IO capability */
#define SMP_IO_CAP_OUT BTM_IO_CAP_OUT       /* DisplayOnly */
#define SMP_IO_CAP_IO BTM_IO_CAP_IO         /* DisplayYesNo */
#define SMP_IO_CAP_IN BTM_IO_CAP_IN         /* KeyboardOnly */
#define SMP_IO_CAP_NONE BTM_IO_CAP_NONE     /* NoInputNoOutput */
#define SMP_IO_CAP_KBDISP BTM_IO_CAP_KBDISP /* Keyboard Display */
#define SMP_IO_CAP_MAX BTM_IO_CAP_MAX
typedef uint8_t tSMP_IO_CAP;

/* OOB data present or not */
enum { SMP_OOB_NONE, SMP_OOB_PRESENT, SMP_OOB_UNKNOWN };
typedef uint8_t tSMP_OOB_FLAG;

/* type of OOB data required from application */
enum { SMP_OOB_INVALID_TYPE, SMP_OOB_PEER, SMP_OOB_LOCAL, SMP_OOB_BOTH };
typedef uint8_t tSMP_OOB_DATA_TYPE;

#define SMP_AUTH_NO_BOND 0x00
#define SMP_AUTH_BOND 0x01

/* SMP Authentication requirement */
#define SMP_AUTH_YN_BIT (1 << 2)
#define SMP_SC_SUPPORT_BIT (1 << 3)
#define SMP_KP_SUPPORT_BIT (1 << 4)
#define SMP_H7_SUPPORT_BIT (1 << 5)

#define SMP_AUTH_MASK                                                          \
  (SMP_AUTH_BOND | SMP_AUTH_YN_BIT | SMP_SC_SUPPORT_BIT | SMP_KP_SUPPORT_BIT | \
   SMP_H7_SUPPORT_BIT)

/* no MITM, No Bonding, encryption only */
#define SMP_AUTH_NB_ENC_ONLY 0x00  //(SMP_AUTH_MASK | BTM_AUTH_SP_NO)

/* MITM, No Bonding, Use IO Capability to determine authentication procedure */
#define SMP_AUTH_NB_IOCAP (SMP_AUTH_NO_BOND | SMP_AUTH_YN_BIT)

/* No MITM, General Bonding, Encryption only */
#define SMP_AUTH_GB_ENC_ONLY SMP_AUTH_BOND

/* MITM, General Bonding, Use IO Capability to determine authentication
 * procedure */
#define SMP_AUTH_GB_IOCAP (SMP_AUTH_BOND | SMP_AUTH_YN_BIT)

/* Secure Connections, no MITM, no Bonding */
#define SMP_AUTH_SC_ENC_ONLY (SMP_H7_SUPPORT_BIT | SMP_SC_SUPPORT_BIT)

/* Secure Connections, no MITM, Bonding */
#define SMP_AUTH_SC_GB (SMP_H7_SUPPORT_BIT | SMP_SC_SUPPORT_BIT | SMP_AUTH_BOND)

/* Secure Connections, MITM, no Bonding */
#define SMP_AUTH_SC_MITM_NB \
  (SMP_H7_SUPPORT_BIT | SMP_SC_SUPPORT_BIT | SMP_AUTH_YN_BIT | SMP_AUTH_NO_BOND)

/* Secure Connections, MITM, Bonding */
#define SMP_AUTH_SC_MITM_GB \
  (SMP_H7_SUPPORT_BIT | SMP_SC_SUPPORT_BIT | SMP_AUTH_YN_BIT | SMP_AUTH_BOND)

/* All AuthReq RFU bits are set to 1 - NOTE: reserved bit in Bonding_Flags is
 * not set */
#define SMP_AUTH_ALL_RFU_SET 0xF8

typedef uint8_t tSMP_AUTH_REQ;

#define SMP_SEC_NONE 0
#define SMP_SEC_UNAUTHENTICATE (1 << 0)
#define SMP_SEC_AUTHENTICATED (1 << 2)
typedef uint8_t tSMP_SEC_LEVEL;

/* Maximum Encryption Key Size range */
#define SMP_ENCR_KEY_SIZE_MIN 7
#define SMP_ENCR_KEY_SIZE_MAX 16

/* SMP key types */
#define SMP_SEC_KEY_TYPE_ENC (1 << 0)  /* encryption key */
#define SMP_SEC_KEY_TYPE_ID (1 << 1)   /* identity key */
#define SMP_SEC_KEY_TYPE_CSRK (1 << 2) /* slave CSRK */
#define SMP_SEC_KEY_TYPE_LK (1 << 3)   /* BR/EDR link key */
typedef uint8_t tSMP_KEYS;

#define SMP_BR_SEC_DEFAULT_KEY \
  (SMP_SEC_KEY_TYPE_ENC | SMP_SEC_KEY_TYPE_ID | SMP_SEC_KEY_TYPE_CSRK)

/* default security key distribution value */
#define SMP_SEC_DEFAULT_KEY                                             \
  (SMP_SEC_KEY_TYPE_ENC | SMP_SEC_KEY_TYPE_ID | SMP_SEC_KEY_TYPE_CSRK | \
   SMP_SEC_KEY_TYPE_LK)

#define SMP_SC_KEY_STARTED 0      /* passkey entry started */
#define SMP_SC_KEY_ENTERED 1      /* passkey digit entered */
#define SMP_SC_KEY_ERASED 2       /* passkey digit erased */
#define SMP_SC_KEY_CLEARED 3      /* passkey cleared */
#define SMP_SC_KEY_COMPLT 4       /* passkey entry completed */
#define SMP_SC_KEY_OUT_OF_RANGE 5 /* out of range */
typedef uint8_t tSMP_SC_KEY_TYPE;

/* data type for BTM_SP_IO_REQ_EVT */
typedef struct {
  tSMP_IO_CAP io_cap;     /* local IO capabilities */
  tSMP_OOB_FLAG oob_data; /* OOB data present (locally) for the peer device */
  tSMP_AUTH_REQ auth_req; /* Authentication required (for local device) */
  uint8_t max_key_size;   /* max encryption key size */
  tSMP_KEYS init_keys;    /* initiator keys to be distributed */
  tSMP_KEYS resp_keys;    /* responder keys */
} tSMP_IO_REQ;

typedef struct {
  tSMP_STATUS reason;
  tSMP_SEC_LEVEL sec_level;
  bool is_pair_cancel;
  bool smp_over_br;
} tSMP_CMPL;

typedef struct {
  BT_OCTET32 x;
  BT_OCTET32 y;
} tSMP_PUBLIC_KEY;

/* the data associated with the info sent to the peer via OOB interface */
typedef struct {
  bool present;
  Octet16 randomizer;
  Octet16 commitment;

  tBLE_BD_ADDR addr_sent_to;
  BT_OCTET32 private_key_used; /* is used to calculate: */
  /* publ_key_used = P-256(private_key_used, curve_p256.G) - send it to the */
  /* other side */
  /* dhkey = P-256(private_key_used, publ key rcvd from the other side) */
  tSMP_PUBLIC_KEY publ_key_used; /* P-256(private_key_used, curve_p256.G) */
} tSMP_LOC_OOB_DATA;

/* the data associated with the info received from the peer via OOB interface */
typedef struct {
  bool present;
  Octet16 randomizer;
  Octet16 commitment;
  tBLE_BD_ADDR addr_rcvd_from;
} tSMP_PEER_OOB_DATA;

typedef struct {
  tSMP_LOC_OOB_DATA loc_oob_data;
  tSMP_PEER_OOB_DATA peer_oob_data;
} tSMP_SC_OOB_DATA;

typedef union {
  uint32_t passkey;
  tSMP_IO_REQ io_req; /* IO request */
  tSMP_CMPL cmplt;
  tSMP_OOB_DATA_TYPE req_oob_type;
  tSMP_LOC_OOB_DATA loc_oob_data;
} tSMP_EVT_DATA;

/* AES Encryption output */
typedef struct {
  uint8_t status;
  uint8_t param_len;
  uint16_t opcode;
  uint8_t param_buf[OCTET16_LEN];
} tSMP_ENC;

/* Security Manager events - Called by the stack when Security Manager related
 * events occur.*/
typedef uint8_t(tSMP_CALLBACK)(tSMP_EVT event, const RawAddress& bd_addr,
                               tSMP_EVT_DATA* p_data);

/* callback function for CMAC algorithm
*/
typedef void(tCMAC_CMPL_CBACK)(uint8_t* p_mac, uint16_t tlen,
                               uint32_t sign_counter);

#endif  // SMP_API_TYPES_H