mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-03-29 13:20:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

sm: remove temp hack to store LTK for SC

Browse Source
This commit is contained in:
Matthias Ringwald 2016-06-23 23:26:25 +02:00
parent 613da3de46
commit 78f44163d6
1 changed files with 14 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/ble/sm.c
View File

@ -1276,14 +1276,23 @@ static void sm_key_distribution_handle_all_received(sm_connection_t * sm_conn){
le_device_db_remote_counter_set(le_db_index, 0);
}
// store encryption information if a) secure connections or b) peer LTK, EDIV, RAND have been received
if ((setup->sm_use_secure_connections)
|| ( (setup->sm_key_distribution_received_set & SM_KEYDIST_FLAG_ENCRYPTION_INFORMATION)
&& (setup->sm_key_distribution_received_set & SM_KEYDIST_FLAG_MASTER_IDENTIFICATION ))){
// store encryption information for secure connections: LTK generated by ECDH
if (setup->sm_use_secure_connections){
log_info("sm: store SC LTK (key size %u, authenticatd %u)", sm_conn->sm_actual_encryption_key_size, sm_conn->sm_connection_authenticated);
uint8_t zero_rand[8];
memset(zero_rand, 0, 8);
le_device_db_encryption_set(le_db_index, 0, zero_rand, setup->sm_ltk, sm_conn->sm_actual_encryption_key_size,
sm_conn->sm_connection_authenticated, sm_conn->sm_connection_authorization_state == AUTHORIZATION_GRANTED);
}
// store encryption infromation for legacy pairing: peer LTK, EDIV, RAND
else if ( (setup->sm_key_distribution_received_set & SM_KEYDIST_FLAG_ENCRYPTION_INFORMATION)
&& (setup->sm_key_distribution_received_set & SM_KEYDIST_FLAG_MASTER_IDENTIFICATION )){
log_info("sm: set encryption information (key size %u, authenticatd %u)", sm_conn->sm_actual_encryption_key_size, sm_conn->sm_connection_authenticated);
le_device_db_encryption_set(le_db_index, setup->sm_peer_ediv, setup->sm_peer_rand, setup->sm_peer_ltk,
sm_conn->sm_actual_encryption_key_size, sm_conn->sm_connection_authenticated, sm_conn->sm_connection_authorization_state == AUTHORIZATION_GRANTED);
}
}
}
// keep le_db_index
@ -1393,11 +1402,6 @@ static void sm_sc_cmac_done(uint8_t * hash){
sm_conn->sm_engine_state = SM_SC_W2_CALCULATE_F5_LTK;
break;
case SM_SC_W4_CALCULATE_F5_LTK:
// store data for later key storage
setup->sm_peer_ediv = 0;
memset(setup->sm_peer_rand, 0, 8);
memcpy(setup->sm_peer_ltk, hash, 16);
// store generated LTK and continue
memcpy(setup->sm_ltk, hash, 16);
sm_conn->sm_engine_state = SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK;
break;