/*
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* Copyright (C) 2018 The Android Open Source Project
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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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package android.hardware.biometrics;
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import android.annotation.NonNull;
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import android.security.keystore.AndroidKeyStoreProvider;
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import java.security.Signature;
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import javax.crypto.Cipher;
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import javax.crypto.Mac;
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/**
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* A wrapper class for the crypto objects supported by BiometricPrompt and FingerprintManager.
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* Currently the framework supports {@link Signature}, {@link Cipher} and {@link Mac} objects.
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* @hide
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*/
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public class CryptoObject {
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private final Object mCrypto;
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public CryptoObject(@NonNull Signature signature) {
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mCrypto = signature;
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}
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public CryptoObject(@NonNull Cipher cipher) {
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mCrypto = cipher;
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}
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public CryptoObject(@NonNull Mac mac) {
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mCrypto = mac;
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}
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/**
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* Get {@link Signature} object.
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* @return {@link Signature} object or null if this doesn't contain one.
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*/
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public Signature getSignature() {
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return mCrypto instanceof Signature ? (Signature) mCrypto : null;
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}
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/**
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* Get {@link Cipher} object.
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* @return {@link Cipher} object or null if this doesn't contain one.
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*/
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public Cipher getCipher() {
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return mCrypto instanceof Cipher ? (Cipher) mCrypto : null;
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}
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/**
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* Get {@link Mac} object.
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* @return {@link Mac} object or null if this doesn't contain one.
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*/
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public Mac getMac() {
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return mCrypto instanceof Mac ? (Mac) mCrypto : null;
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}
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/**
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* @hide
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* @return the opId associated with this object or 0 if none
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*/
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public final long getOpId() {
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return mCrypto != null
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? AndroidKeyStoreProvider.getKeyStoreOperationHandle(mCrypto) : 0;
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}
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};
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