/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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.keycloak.saml.processing.api.util;
import java.security.cert.X509Certificate;
import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import javax.xml.crypto.dsig.keyinfo.KeyName;
import javax.xml.crypto.dsig.keyinfo.X509Data;
/**
* Tools for {@link KeyInfo} object manipulation.
* @author hmlnarik
*/
public class KeyInfoTools {
/**
* Returns the first object of the given class from the given Iterable.
* @param <T>
* @param objects
* @param clazz
* @return The object or {@code null} if not found.
*/
public static <T> T getContent(Iterable<Object> objects, Class<T> clazz) {
if (objects == null) {
return null;
}
for (Object o : objects) {
if (clazz.isInstance(o)) {
return (T) o;
}
}
return null;
}
public static KeyName getKeyName(KeyInfo keyInfo) {
return keyInfo == null ? null : getContent(keyInfo.getContent(), KeyName.class);
}
public static X509Data getX509Data(KeyInfo keyInfo) {
return keyInfo == null ? null : getContent(keyInfo.getContent(), X509Data.class);
}
public static X509Certificate getX509Certificate(KeyInfo keyInfo) {
X509Data d = getX509Data(keyInfo);
return d == null ? null : getContent(d.getContent(), X509Certificate.class);
}
}