/*
 * 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.qpid.protonj2.engine.sasl.client;

import java.util.UUID;

import org.apache.qpid.protonj2.types.Symbol;

/**
 * Implements the SASL Scram SHA1 authentication Mechanism.
 */
public class ScramSHA1Mechanism extends AbstractScramSHAMechanism {

    public static final String SHA_1 = "SHA-1";
    public static final String HMAC_SHA_1 = "HmacSHA1";

    /**
     * A singleton instance of the symbolic mechanism name.
     */
    public static final Symbol SCRAM_SHA_1 = Symbol.valueOf("SCRAM-SHA-1");

    /**
     * Creates an instance of the {@link ScramSHA1Mechanism} with a generated client Nonce.
     */
    public ScramSHA1Mechanism() {
        this(UUID.randomUUID().toString());
    }

    /** For unit testing */
    ScramSHA1Mechanism(String clientNonce) {
        super(SHA_1, HMAC_SHA_1, clientNonce);
    }

    @Override
    public Symbol getName() {
        return SCRAM_SHA_1;
    }
}
