01: /*
02: * Copyright 2005-2006 The Kuali Foundation.
03: *
04: *
05: * Licensed under the Educational Community License, Version 1.0 (the "License");
06: * you may not use this file except in compliance with the License.
07: * You may obtain a copy of the License at
08: *
09: * http://www.opensource.org/licenses/ecl1.php
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: package edu.iu.uis.eden.security;
18:
19: import java.security.Signature;
20:
21: import org.apache.commons.codec.binary.Base64;
22:
23: /**
24: * An abstract implementation of a DigitalSigner which provides convienance utilities for storing a reference
25: * to the Signature and also generating and encoding the actual digital signature.
26: *
27: * @author Kuali Rice Team (kuali-rice@googlegroups.com)
28: */
29: public abstract class AbstractDigitalSigner implements DigitalSigner {
30:
31: private Signature signature;
32:
33: public AbstractDigitalSigner(Signature signature) {
34: this .signature = signature;
35: }
36:
37: public Signature getSignature() {
38: return this .signature;
39: }
40:
41: protected byte[] getSignatureBytes() throws Exception {
42: return getSignature().sign();
43: }
44:
45: protected String getEncodedSignature() throws Exception {
46: return new String(Base64.encodeBase64(getSignatureBytes()),
47: "UTF-8");
48: }
49:
50: }
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