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sm: use SM_REASON_DHKEY_CHECK_FAILED if received public key is invalid, simulate invalid public key for testing

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This commit is contained in:
Matthias Ringwald 2018-07-11 19:49:14 +02:00
parent 8db5aeed23
commit 349d0adb5f
1 changed files with 9 additions and 2 deletions
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11
src/ble/sm.c
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@ -2233,6 +2233,14 @@ static void sm_run(void){
reverse_256(&ec_q[0], &buffer[1]);
reverse_256(&ec_q[32], &buffer[33]);
#ifdef ENABLE_TESTING_SUPPORT
if (test_pairing_failure == SM_REASON_DHKEY_CHECK_FAILED){
log_info("testing_support: invalidating public key");
// flip single bit of public key coordinate
buffer[1] ^= 1;
}
#endif
// stk generation method
// passkey entry: notify app to show passkey or to request passkey
switch (setup->sm_stk_generation_method){
@ -3374,8 +3382,7 @@ static void sm_pdu_handler(uint8_t packet_type, hci_con_handle_t con_handle, uin
err = btstack_crypto_ecc_p256_validate_public_key(setup->sm_peer_q);
if (err){
log_error("sm: peer public key invalid %x", err);
// uses "unspecified reason", there is no "public key invalid" error code
sm_pdu_received_in_wrong_state(sm_conn);
sm_pairing_error(sm_conn, SM_REASON_DHKEY_CHECK_FAILED);
break;
}