org.jose4j.jwa.AlgorithmAvailability Maven / Gradle / Ivy
/*
* Copyright 2012-2017 Brian Campbell
*
* 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.jose4j.jwa;
import java.security.Security;
import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*/
public class AlgorithmAvailability
{
private static Logger log = LoggerFactory.getLogger(AlgorithmAvailability.class);
public static boolean isAvailable(String serviceName, String algorithm)
{
Set algorithms = Security.getAlgorithms(serviceName);
for (String serviceAlg : algorithms)
{
if (serviceAlg.equalsIgnoreCase(algorithm))
{
return true;
}
}
log.debug("{} is NOT available for {}. Algorithms available from underlying JCE: {}", algorithm, serviceName, algorithms);
return false;
}
}