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48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "sm_util.h"
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#include "bt_device.h"
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#include <bluetooth/sm_types.h>
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#include <stdbool.h>
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#include <string.h>
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// -------------------------------------------------------------------------------------------------
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bool sm_is_pairing_info_equal_identity(const SMPairingInfo *a, const SMPairingInfo *b) {
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return (a->is_remote_identity_info_valid &&
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b->is_remote_identity_info_valid &&
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bt_device_equal(&a->identity.opaque, &b->identity.opaque) &&
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memcmp(&a->irk, &b->irk, sizeof(SMIdentityResolvingKey)) == 0);
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}
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// -------------------------------------------------------------------------------------------------
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bool sm_is_pairing_info_empty(const SMPairingInfo *p) {
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return (!p->is_local_encryption_info_valid &&
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!p->is_remote_encryption_info_valid &&
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!p->is_remote_identity_info_valid &&
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!p->is_remote_signing_info_valid);
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}
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bool sm_is_pairing_info_irk_not_used(const SMIdentityResolvingKey *irk_key) {
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// Per BLE spec v4.2 section 10.7 "Privacy Feature":
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//
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// "The local or peer’s IRK shall be an all-zero key, if not applicable for the particular
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// device identity."
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const SMIdentityResolvingKey empty_key = { };
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return (memcmp(irk_key, &empty_key, sizeof(empty_key)) == 0);
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}
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