/*
* Copyright [2007] [University Corporation for Advanced Internet Development, Inc.]
*
* 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.opensaml.common.impl;
import java.util.Random;
import org.bouncycastle.util.encoders.Hex;
import org.opensaml.common.IdentifierGenerator;
/**
* Generates identifiers using random data obtained from a {@link java.util.Random} instance.
*/
public class RandomIdentifierGenerator implements IdentifierGenerator {
/** Random number generator. */
private static Random random;
/**
* Constructor.
*/
public RandomIdentifierGenerator() {
random = new Random();
}
/** {@inheritDoc} */
public String generateIdentifier() {
return generateIdentifier(16);
}
/** {@inheritDoc} */
public String generateIdentifier(int size) {
byte[] buf = new byte[size];
random.nextBytes(buf);
return "_".concat(new String(Hex.encode(buf)));
}
}