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// Copyright 2022 The Pigweed Authors
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
#include <cstdint>
namespace pw::bluetooth::low_energy {
// The LE Security Mode of a BLE device determines the possible security
// properties of the device. The security mode does not make specific guarantees
// about the current security properties of a device's connections; it sets
// restrictions on the allowable security properties. See Core Spec v5.2 Vol. 3,
// Part C 10.2 for more details.
enum class SecurityMode : uint8_t {
// In LE Security Mode 1, communication is secured by encryption, and
// BLE-based services may specify varying requirements for authentication, key
// size, or Secure Connections protection on the encryption keys.
kMode1 = 0,
// In Secure Connections Only mode, all secure communication must use 128 bit,
// authenticated, and LE Secure Connections-generated encryption keys. If
// these encryption key properties cannot be satisfied by a device due to
// system constraints, any connection involving such a device will not be able
// to secure the link at all. This mode does not prevent unencrypted
// communication; it merely enforces stricter policies on all encrypted
// communication.
kSecureConnectionsOnly = 1
} // namespace pw::bluetooth::low_energy