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/*
 * 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.jwe;

import org.jose4j.lang.ByteUtil;

import java.security.SecureRandom;

public class InitializationVectorHelp
{
    static byte[] iv(int byteLength, byte[] ivOverride, SecureRandom secureRandom)
    {
        return (ivOverride == null) ? ByteUtil.randomBytes(byteLength, secureRandom) : ivOverride;
    }
}