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encryption with STK in initiator role working

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matthias.ringwald 2014-06-13 15:28:41 +00:00
parent 8e9a149871
commit 641f306499
1 changed files with 28 additions and 13 deletions
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41
ble/sm.c
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@ -66,14 +66,25 @@ typedef enum {
SM_STATE_PH2_C1_GET_RANDOM_B,
SM_STATE_PH2_C1_W4_RANDOM_B,
// calculate confirm c1
// calculate confirm value for local side
SM_STATE_PH2_C1_GET_ENC_A,
SM_STATE_PH2_C1_W4_ENC_A,
SM_STATE_PH2_C1_GET_ENC_B,
SM_STATE_PH2_C1_W4_ENC_B,
// calculate confirm value for remote side
SM_STATE_PH2_C1_GET_ENC_C,
SM_STATE_PH2_C1_W4_ENC_C,
SM_STATE_PH2_C1_GET_ENC_D,
SM_STATE_PH2_C1_W4_ENC_D,
SM_STATE_PH2_C1_SEND_PAIRING_CONFIRM,
SM_STATE_PH2_SEND_PAIRING_RANDOM,
// calc STK
SM_STATE_PH2_CALC_STK,
SM_STATE_PH2_W4_STK,
// RESPONDER ROLE
SM_STATE_SEND_SECURITY_REQUEST,
@ -87,18 +98,9 @@ typedef enum {
// Phase 2: Authenticating and Encrypting
// calculate confirm values for remote connection
SM_STATE_PH2_C1_SEND_PAIRING_CONFIRM,
SM_STATE_PH2_W4_PAIRING_RANDOM,
SM_STATE_PH2_C1_GET_ENC_C,
SM_STATE_PH2_C1_W4_ENC_C,
SM_STATE_PH2_C1_GET_ENC_D,
SM_STATE_PH2_C1_W4_ENC_D,
// calc STK
SM_STATE_PH2_CALC_STK,
SM_STATE_PH2_W4_STK,
SM_STATE_PH2_ENCRYPT_WITH_STK,
SM_STATE_PH2_SEND_LTK_REPLY,
SM_STATE_PH2_W4_LTK_REQUEST,
SM_STATE_PH2_W4_CONNECTION_ENCRYPTED,
@ -136,7 +138,9 @@ typedef enum {
SM_STATE_INITIATOR_PH2_W4_PAIRING_CONFIRM,
SM_STATE_INITIATOR_PH2_W4_PAIRING_RANDOM,
SM_STATE_INITIATOR_PH3_SEND_START_ENCRYPTION,
SM_STATE_INITIATOR_XXX,
} security_manager_state_t;
typedef enum {
@ -1104,13 +1108,20 @@ static void sm_run(void){
}
return;
}
case SM_STATE_PH2_ENCRYPT_WITH_STK: {
case SM_STATE_PH2_SEND_LTK_REPLY: {
sm_key_t stk_flipped;
swap128(setup->sm_ltk, stk_flipped);
hci_send_cmd(&hci_le_long_term_key_request_reply, connection->sm_handle, stk_flipped);
connection->sm_state_responding = SM_STATE_PH2_W4_CONNECTION_ENCRYPTED;
return;
}
case SM_STATE_INITIATOR_PH3_SEND_START_ENCRYPTION: {
sm_key_t stk_flipped;
swap128(setup->sm_ltk, stk_flipped);
hci_send_cmd(&hci_le_start_encryption, connection->sm_handle, 0, 0, 0, stk_flipped);
connection->sm_state_responding = SM_STATE_PH2_W4_CONNECTION_ENCRYPTED;
return;
}
case SM_STATE_PH4_SEND_LTK: {
sm_key_t ltk_flipped;
swap128(setup->sm_ltk, ltk_flipped);
@ -1296,7 +1307,11 @@ static void sm_handle_encryption_result(uint8_t * data){
swap128(data, setup->sm_ltk);
sm_truncate_key(setup->sm_ltk, connection->sm_actual_encryption_key_size);
print_key("stk", setup->sm_ltk);
connection->sm_state_responding = SM_STATE_PH2_ENCRYPT_WITH_STK;
if (connection->sm_role){
connection->sm_state_responding = SM_STATE_PH2_SEND_LTK_REPLY;
} else {
connection->sm_state_responding = SM_STATE_INITIATOR_PH3_SEND_START_ENCRYPTION;
}
return;
case SM_STATE_PH3_Y_W4_ENC:{
sm_key_t y128;