1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.biometrics.fingerprint2.lib.domain.interactor 18 19 /** This interactor is responsible for generating a challenge. */ 20 interface GenerateChallengeInteractor { 21 /** 22 * Generates a challenge with the provided [gateKeeperPasswordHandle] and on success returns a 23 * challenge and challenge token. This info can be used for secure operations such as enrollment 24 * 25 * @param gateKeeperPasswordHandle GateKeeper password handle generated by a Confirm 26 * @return A [Pair] of the challenge and challenge token 27 */ generateChallengenull28 suspend fun generateChallenge(gateKeeperPasswordHandle: Long): Pair<Long, ByteArray> 29 } 30