org.jasypt.registry.AlgorithmRegistry Maven / Gradle / Ivy
/*
* =============================================================================
*
* Copyright (c) 2007-2010, The JASYPT team (http://www.jasypt.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* =============================================================================
*/
package org.jasypt.registry;
import java.security.Security;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
/**
*
* Utility class for retrieving the names of all the digest or encryption
* algorithms available to Jasypt.
*
*
* This class is thread-safe.
*
*
* @since 1.7
*
* @author Daniel Fernández
*
*/
public final class AlgorithmRegistry {
/**
*
* Returns a set with the names of all the registered digest algorithms.
* This set will also include algorithms from any third-party (non-JVM) registered
* providers.
*
*
* @since 1.7
*
* @return a Set of Strings with the names of all the registered
* digest algorithms.
*/
public static Set getAllDigestAlgorithms() {
final List algos = new ArrayList(Security.getAlgorithms("MessageDigest"));
Collections.sort(algos);
return Collections.unmodifiableSet(new LinkedHashSet(algos));
}
/**
*
* Returns a set with the names of all the registered PBE (Password-Based
* Encryption) algorithms.
* This set will also include algorithms from any third-party (non-JVM) registered
* providers.
*
*
* @since 1.7
*
* @return a Set of Strings with the names of all the registered
* PBE algorithms.
*/
public static Set getAllPBEAlgorithms() {
final List algos = new ArrayList(Security.getAlgorithms("Cipher"));
Collections.sort(algos);
final LinkedHashSet pbeAlgos = new LinkedHashSet();
final Iterator algosIter = algos.iterator();
while (algosIter.hasNext()) {
final String algo = (String) algosIter.next();
if (algo != null && algo.startsWith("PBE")) {
pbeAlgos.add(algo);
}
}
return Collections.unmodifiableSet(pbeAlgos);
}
private AlgorithmRegistry() {
super();
}
}