mirror/btstack
1
0
Fork 0
mirror of https://github.com/bluekitchen/btstack.git synced 2025-01-26 12:35:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

protect aes128 engine with mutex

Browse Source
This commit is contained in:
matthias.ringwald@gmail.com 2013-12-13 17:37:25 +00:00
parent 04118274b2
commit f5a7b8eea0
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
example/libusb/ble_server.c
View File

@ -123,7 +123,6 @@ typedef enum {
} io_capability_t;
//
// types used by client
//
@ -271,8 +270,9 @@ static uint8_t sm_pairing_failed_reason = 0;
static timer_source_t sm_timeout;
// data to send to aes128 crypto engine, see sm_aes128_set_key and sm_aes128_set_plaintext
static key_t sm_aes128_key;
static key_t sm_aes128_plaintext;
static key_t sm_aes128_key;
static key_t sm_aes128_plaintext;
static uint8_t sm_aes128_active;
// generation method and temporary key for STK - STK is stored in sm_s_ltk
static stk_generation_method_t sm_stk_generation_method;
@ -692,7 +692,10 @@ static void sm_run(void){
case SM_STATE_PH4_DHK_GET_ENC:
case SM_STATE_PH4_Y_GET_ENC:
case SM_STATE_PH4_LTK_GET_ENC:
// already busy?
if (sm_aes128_active) break;
{
sm_aes128_active = 1;
key_t key_flipped, plaintext_flipped;
swap128(sm_aes128_key, key_flipped);
swap128(sm_aes128_plaintext, plaintext_flipped);
@ -1001,6 +1004,7 @@ void sm_init(){
| SM_STK_GENERATION_METHOD_PASSKEY;
sm_max_encryption_key_size = 16;
sm_min_encryption_key_size = 7;
sm_aes128_active = 0;
}
// END OF SM
@ -1138,6 +1142,7 @@ static void packet_handler (void * connection, uint8_t packet_type, uint16_t cha
break;
}
if (COMMAND_COMPLETE_EVENT(packet, hci_le_encrypt)){
sm_aes128_active = 0;
switch (sm_state_responding){
case SM_STATE_PH2_C1_W4_ENC_A:
case SM_STATE_PH2_C1_W4_ENC_C: