static void att_signed_write_handle_cmac_result(uint8_t hash[8]){
if (att_server_state != ATT_SERVER_W4_SIGNED_WRITE_VALIDATION) return;
if (memcmp(hash, &att_request_buffer[att_request_size-8], 8)){
log_info("ATT Signed Write, invalid signature");
att_server_state = ATT_SERVER_IDLE;
return;
}
// update sequence number
uint32_t counter_packet = READ_BT_32(att_request_buffer, att_request_size-12);
le_device_db_remote_counter_set(att_ir_le_device_db_index, counter_packet+1);
att_server_state = ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED;
att_run();
}
static void att_signed_write_handle_cmac_result(uint8_t hash[8]){
att_server_t * att_server = att_server_for_state(ATT_SERVER_W4_SIGNED_WRITE_VALIDATION);
if (!att_server) return;
uint8_t hash_flipped[8];
reverse_64(hash, hash_flipped);
if (memcmp(hash_flipped, &att_server->request_buffer[att_server->request_size-8], 8)){
log_info("ATT Signed Write, invalid signature");
att_server->state = ATT_SERVER_IDLE;
return;
}
log_info("ATT Signed Write, valid signature");
// update sequence number
uint32_t counter_packet = little_endian_read_32(att_server->request_buffer, att_server->request_size-12);
le_device_db_remote_counter_set(att_server->ir_le_device_db_index, counter_packet+1);
att_server->state = ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED;
att_dispatch_server_request_can_send_now_event(att_server->connection.con_handle);
}
