001// --------------------------------------------------------------------------------
002// Copyright 2002-2026 Echo Three, LLC
003//
004// Licensed under the Apache License, Version 2.0 (the "License");
005// you may not use this file except in compliance with the License.
006// You may obtain a copy of the License at
007//
008//     http://www.apache.org/licenses/LICENSE-2.0
009//
010// Unless required by applicable law or agreed to in writing, software
011// distributed under the License is distributed on an "AS IS" BASIS,
012// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013// See the License for the specific language governing permissions and
014// limitations under the License.
015// --------------------------------------------------------------------------------
016
017package com.echothree.util.server.persistence;
018
019import com.echothree.util.common.persistence.EncryptionConstants;
020import java.security.NoSuchAlgorithmException;
021import java.security.SecureRandom;
022import java.util.Random;
023import javax.enterprise.context.ApplicationScoped;
024import org.slf4j.Logger;
025import org.slf4j.LoggerFactory;
026
027@ApplicationScoped
028public class RandomUtils {
029
030    protected final Logger log = LoggerFactory.getLogger(this.getClass());
031
032    protected RandomUtils() {
033        super();
034    }
035
036    public Random getRandom() {
037        Random random;
038
039        try {
040            random = SecureRandom.getInstance(EncryptionConstants.SHA1PRNG_ALGORITHM);
041        } catch (NoSuchAlgorithmException nsae) {
042            log.warn("SecureRandom was unable to find an instance of " + EncryptionConstants.SHA1PRNG_ALGORITHM + ", falling back to Random");
043            random = new Random();
044        }
045
046        return random;
047    }
048
049}