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sm: manage global signing counter

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This commit is contained in:
Matthias Ringwald 2015-08-19 14:43:41 +02:00
parent ad78015fbd
commit 9f9b1721e1
2 changed files with 23 additions and 0 deletions
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10
ble/sm.c
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@ -137,6 +137,8 @@ static derived_key_generation_t dkg_state;
// derived from sm_persistent_er // derived from sm_persistent_er
// .. // ..
static uint32_t sm_signing_counter = 0;
// random address update // random address update
static random_address_update_t rau_state; static random_address_update_t rau_state;
static bd_addr_t sm_random_address; static bd_addr_t sm_random_address;
@ -2225,6 +2227,14 @@ void sm_set_ir(sm_key_t ir){
memcpy(sm_persistent_ir, ir, 16); memcpy(sm_persistent_ir, ir, 16);
} }
void sm_set_signing_counter(uint32_t signing_counter){
sm_signing_counter = signing_counter;
}
uint32_t sm_signing_counter_next(void){
return sm_signing_counter++;
}
// Testing support only // Testing support only
void sm_test_set_irk(sm_key_t irk){ void sm_test_set_irk(sm_key_t irk){
memcpy(sm_persistent_irk, irk, 16); memcpy(sm_persistent_irk, irk, 16);

13
ble/sm.h
View File

@ -147,6 +147,14 @@ void sm_set_er(sm_key_t er);
*/ */
void sm_set_ir(sm_key_t ir); void sm_set_ir(sm_key_t ir);
/**
* @brief Set signning counnter used with Connection Signature Resolving Key (CSRK)
* @note Needs to be stored in persistent memory as a signed writes are invalid if a higher counter was
* recevied before
* @param signing counter
*/
void sm_set_signing_counter(uint32_t signing_counter);
/** /**
* *
* @brief Registers OOB Data Callback. The callback should set the oob_data and return 1 if OOB data is availble * @brief Registers OOB Data Callback. The callback should set the oob_data and return 1 if OOB data is availble
@ -263,6 +271,11 @@ void sm_authorization_grant(uint8_t addr_type, bd_addr_t address);
int sm_cmac_ready(void); int sm_cmac_ready(void);
void sm_cmac_start(sm_key_t k, uint16_t message_len, uint8_t * message, uint32_t sign_counter, void (*done_handler)(uint8_t hash[8])); void sm_cmac_start(sm_key_t k, uint16_t message_len, uint8_t * message, uint32_t sign_counter, void (*done_handler)(uint8_t hash[8]));
/**
* @brief Get global signing counter and increment it
*/
uint32_t sm_signing_counter_next(void);
/* /*
* @brief Match address against bonded devices * @brief Match address against bonded devices
* @return 0 if successfully added to lookup queue * @return 0 if successfully added to lookup queue