01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /**
19: * @author Vera Y. Petrashkova
20: * @version $Revision$
21: */package org.apache.harmony.crypto.tests.support;
22:
23: import java.security.InvalidAlgorithmParameterException;
24: import java.security.InvalidKeyException;
25: import java.security.Key;
26: import java.security.spec.AlgorithmParameterSpec;
27:
28: import javax.crypto.MacSpi;
29: import javax.crypto.spec.SecretKeySpec;
30:
31: /**
32: * Additional class for verification of MacGeneratorSpi and MacSpi
33: *
34: */
35:
36: public class MyMacSpi extends MacSpi {
37:
38: private int length = 0;
39:
40: @Override
41: protected int engineGetMacLength() {
42: return length;
43: }
44:
45: @Override
46: protected void engineInit(Key key, AlgorithmParameterSpec params)
47: throws InvalidKeyException,
48: InvalidAlgorithmParameterException {
49: if (params == null) {
50: if (!(key instanceof SecretKeySpec)) {
51: throw new IllegalArgumentException(
52: "params is null and key is SecretKeySpec");
53: }
54: }
55: }
56:
57: @Override
58: protected void engineUpdate(byte input) {
59: }
60:
61: @Override
62: protected void engineUpdate(byte[] input, int offset, int len) {
63: if (offset >= 0 && len >= 0) {
64: length = len;
65: }
66: }
67:
68: @Override
69: protected byte[] engineDoFinal() {
70: return new byte[length];
71: }
72:
73: @Override
74: protected void engineReset() {
75: length++;
76: }
77: }
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