org.apache.wss4j.common.derivedKey.AlgoFactory Maven / Gradle / Ivy

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.apache.wss4j.common.derivedKey;

import org.apache.wss4j.common.ext.WSSecurityException;

public final class AlgoFactory {

    private AlgoFactory() {
        // Complete
    }

    /**
     * This gives a DerivationAlgorithm instance from the default set of algorithms provided
     *
     * @param algorithm The algorithm identifier
     * @return A derivation algorithm
     * @throws ConversationException If the specified algorithm is not available
     *                               in default implementations
     */
    public static DerivationAlgorithm getInstance(String algorithm) throws WSSecurityException {
        if (ConversationConstants.DerivationAlgorithm.P_SHA_1_2005_12.equals(algorithm)
            || ConversationConstants.DerivationAlgorithm.P_SHA_1.equals(algorithm)) {
            return new P_SHA1();
        } else {
            throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE,
                                          "unknownAlgorithm", new Object[] {algorithm});
        }
    }

}