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sm: store non-truncated LTK in setup->sm_local_ltk for cross transport key derivation - see E6405

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Matthias Ringwald 2016-06-27 17:12:51 +02:00
parent b18300a6ef
commit aa7d4d9c48
1 changed files with 1 additions and 1 deletions
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2
src/ble/sm.c
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@ -1411,7 +1411,7 @@ static void sm_sc_cmac_done(uint8_t * hash){
// E6405 – Cross transport key derivation from a key of size less than 128 bits // E6405 – Cross transport key derivation from a key of size less than 128 bits
// Note: When the BR/EDR link key is being derived from the LTK, the derivation is done before the LTK gets masked." // Note: When the BR/EDR link key is being derived from the LTK, the derivation is done before the LTK gets masked."
memcpy(setup->sm_ltk, hash, 16); memcpy(setup->sm_ltk, hash, 16);
memcpy(setup->sm_local_ltk, 16); memcpy(setup->sm_local_ltk, hash, 16);
sm_truncate_key(setup->sm_ltk, sm_conn->sm_actual_encryption_key_size); sm_truncate_key(setup->sm_ltk, sm_conn->sm_actual_encryption_key_size);
sm_conn->sm_engine_state = SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK; sm_conn->sm_engine_state = SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK;
break; break;