1 /* 2 * Copyright (C) 2015 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.keystore.cts; 18 19 import java.security.AlgorithmParameters; 20 import java.security.spec.AlgorithmParameterSpec; 21 import java.security.spec.InvalidParameterSpecException; 22 23 import javax.crypto.spec.IvParameterSpec; 24 25 abstract class AESCTRCipherTestBase extends BlockCipherTestBase { 26 27 @Override 28 protected boolean isStreamCipher() { 29 return true; 30 } 31 32 @Override 33 protected boolean isAuthenticatedCipher() { 34 return false; 35 } 36 37 @Override 38 protected int getKatAuthenticationTagLengthBytes() { 39 throw new UnsupportedOperationException(); 40 } 41 42 @Override 43 protected int getBlockSize() { 44 return 16; 45 } 46 47 @Override 48 protected AlgorithmParameterSpec getKatAlgorithmParameterSpec() { 49 return new IvParameterSpec(getKatIv()); 50 } 51 52 @Override 53 protected byte[] getIv(AlgorithmParameters params) throws InvalidParameterSpecException { 54 IvParameterSpec spec = params.getParameterSpec(IvParameterSpec.class); 55 return spec.getIV(); 56 } 57 } 58
