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      1 /*
      2  * Copyright (C) 2016 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 android.security.keymaster;
     18 
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 
     22 import java.util.ArrayList;
     23 import java.util.List;
     24 
     25 /**
     26  * Utility class for the Java side of keystore-generated certificate chains.
     27  *
     28  * Serialization code for this must be kept in sync with system/security/keystore
     29  * @hide
     30  */
     31 public class KeymasterCertificateChain implements Parcelable {
     32 
     33     private List<byte[]> mCertificates;
     34 
     35     public static final Parcelable.Creator<KeymasterCertificateChain> CREATOR = new
     36             Parcelable.Creator<KeymasterCertificateChain>() {
     37                 public KeymasterCertificateChain createFromParcel(Parcel in) {
     38                     return new KeymasterCertificateChain(in);
     39                 }
     40                 public KeymasterCertificateChain[] newArray(int size) {
     41                     return new KeymasterCertificateChain[size];
     42                 }
     43             };
     44 
     45     public KeymasterCertificateChain() {
     46         mCertificates = null;
     47     }
     48 
     49     public KeymasterCertificateChain(List<byte[]> mCertificates) {
     50         this.mCertificates = mCertificates;
     51     }
     52 
     53     private KeymasterCertificateChain(Parcel in) {
     54         readFromParcel(in);
     55     }
     56 
     57     public List<byte[]> getCertificates() {
     58         return mCertificates;
     59     }
     60 
     61     @Override
     62     public void writeToParcel(Parcel out, int flags) {
     63         if (mCertificates == null) {
     64             out.writeInt(0);
     65         } else {
     66             out.writeInt(mCertificates.size());
     67             for (byte[] arg : mCertificates) {
     68                 out.writeByteArray(arg);
     69             }
     70         }
     71     }
     72 
     73     public void readFromParcel(Parcel in) {
     74         int length = in.readInt();
     75         mCertificates = new ArrayList<byte[]>(length);
     76         for (int i = 0; i < length; i++) {
     77             mCertificates.add(in.createByteArray());
     78         }
     79     }
     80 
     81     @Override
     82     public int describeContents() {
     83         return 0;
     84     }
     85 }
     86