2d29591e51
This CL introduces the Keystore SPI class for IKeystoreAuthorization aidl interface and implements the calling code for addAuthToken method. Bug: 166672367 Test: VTS test Change-Id: I7893ab4520b16533b9fddc9909297856e0b523ae
76 lines
2.7 KiB
Java
76 lines
2.7 KiB
Java
/*
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* Copyright (C) 2020 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.security;
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import android.annotation.NonNull;
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import android.hardware.security.keymint.HardwareAuthToken;
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import android.hardware.security.keymint.Timestamp;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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/**
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* @hide This Utils class provides method(s) for AuthToken conversion.
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*/
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public class AuthTokenUtils {
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private AuthTokenUtils(){
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}
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/**
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* Build a HardwareAuthToken from a byte array
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* @param array byte array representing an auth token
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* @return HardwareAuthToken representation of an auth token
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*/
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public static @NonNull HardwareAuthToken toHardwareAuthToken(@NonNull byte[] array) {
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final HardwareAuthToken hardwareAuthToken = new HardwareAuthToken();
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// First byte is version, which does not exist in HardwareAuthToken anymore
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// Next 8 bytes is the challenge.
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hardwareAuthToken.challenge =
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ByteBuffer.wrap(array, 1, 8).order(ByteOrder.nativeOrder()).getLong();
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// Next 8 bytes is the userId
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hardwareAuthToken.userId =
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ByteBuffer.wrap(array, 9, 8).order(ByteOrder.nativeOrder()).getLong();
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// Next 8 bytes is the authenticatorId.
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hardwareAuthToken.authenticatorId =
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ByteBuffer.wrap(array, 17, 8).order(ByteOrder.nativeOrder()).getLong();
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// while the other fields are in machine byte order, authenticatorType and timestamp
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// are in network byte order.
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// Next 4 bytes is the authenticatorType.
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hardwareAuthToken.authenticatorType =
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ByteBuffer.wrap(array, 25, 4).order(ByteOrder.BIG_ENDIAN).getInt();
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// Next 8 bytes is the timestamp.
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final Timestamp timestamp = new Timestamp();
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timestamp.milliSeconds =
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ByteBuffer.wrap(array, 29, 8).order(ByteOrder.BIG_ENDIAN).getLong();
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hardwareAuthToken.timestamp = timestamp;
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// Last 32 bytes is the mac, 37:69
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hardwareAuthToken.mac = new byte[32];
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System.arraycopy(array, 37 /* srcPos */,
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hardwareAuthToken.mac,
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0 /* destPos */,
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32 /* length */);
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return hardwareAuthToken;
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}
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}
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