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      1 /*
      2  * Copyright (C) 2017 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  * Copyright (c) 2017, The Linux Foundation.
     18  */
     19 
     20 /*
     21  * Copyright 2010 Giesecke & Devrient GmbH.
     22  *
     23  * Licensed under the Apache License, Version 2.0 (the "License");
     24  * you may not use this file except in compliance with the License.
     25  * You may obtain a copy of the License at
     26  *
     27  *      http://www.apache.org/licenses/LICENSE-2.0
     28  *
     29  * Unless required by applicable law or agreed to in writing, software
     30  * distributed under the License is distributed on an "AS IS" BASIS,
     31  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     32  * See the License for the specific language governing permissions and
     33  * limitations under the License.
     34  */
     35 
     36 package com.android.se.security;
     37 
     38 /** Represents the Response received from the Secure Element */
     39 public class ResponseApdu {
     40 
     41     protected int mSw1 = 0x00;
     42     protected int mSw2 = 0x00;
     43     protected byte[] mData = new byte[0];
     44 
     45     public ResponseApdu(byte[] respApdu) {
     46         if (respApdu.length < 2) {
     47             return;
     48         }
     49         if (respApdu.length > 2) {
     50             mData = new byte[respApdu.length - 2];
     51             System.arraycopy(respApdu, 0, mData, 0, respApdu.length - 2);
     52         }
     53         mSw1 = 0x00FF & respApdu[respApdu.length - 2];
     54         mSw2 = 0x00FF & respApdu[respApdu.length - 1];
     55     }
     56 
     57     public int getSW1() {
     58         return mSw1;
     59     }
     60 
     61     public int getSW2() {
     62         return mSw2;
     63     }
     64 
     65     public int getSW1SW2() {
     66         return (mSw1 << 8) | mSw2;
     67     }
     68 
     69     public byte[] getData() {
     70         return mData;
     71     }
     72 
     73     /** Returns true if the Status Words are equal */
     74     public boolean isStatus(int sw1sw2) {
     75         return (getSW1SW2() == sw1sw2);
     76     }
     77 }
     78