net.shibboleth.utilities.java.support.security.SecureRandomIdentifierGenerationStrategy Maven / Gradle / Ivy
/*
* Licensed to the University Corporation for Advanced Internet Development,
* Inc. (UCAID) under one or more contributor license agreements. See the
* NOTICE file distributed with this work for additional information regarding
* copyright ownership. The UCAID 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 net.shibboleth.utilities.java.support.security;
import java.security.SecureRandom;
import javax.annotation.Nonnull;
import org.apache.commons.codec.BinaryEncoder;
/**
* A specialized subclass of {@link RandomIdentifierGenerationStrategy} which constrains the supplied
* random number generator to be an instance of {@link SecureRandom}.
*/
public class SecureRandomIdentifierGenerationStrategy extends RandomIdentifierGenerationStrategy {
/**
* Constructor. Initializes the random number source to a new {@link SecureRandom}, size of identifier is set to 16
* bytes, and the encoder is set to a {@link org.apache.commons.codec.binary.Hex}.
*/
public SecureRandomIdentifierGenerationStrategy() {
}
/**
* Constructor. Initializes the random number source to a new {@link SecureRandom} and the encoder is set to a
* {@link org.apache.commons.codec.binary.Hex}.
*
* @param identifierSize number of random bytes in identifier
*/
public SecureRandomIdentifierGenerationStrategy(final int identifierSize) {
super(identifierSize);
}
/**
* Constructor.
*
* @param source source of random bytes
* @param identifierSize number of random bytes in the identifier
* @param identifierEncoder encoder used to convert random bytes to string identifier
*/
public SecureRandomIdentifierGenerationStrategy(@Nonnull final SecureRandom source, int identifierSize,
@Nonnull final BinaryEncoder identifierEncoder) {
super(source, identifierSize, identifierEncoder);
}
}