1 /* 2 * Copyright [2005] [University Corporation for Advanced Internet Development, Inc.] 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.opensaml.common; 18 19 /** 20 * Interface for identifier generators. This identifier can be used for things like 21 * digital signature identifiers, opaque principal identifiers, etc. 22 */ 23 public interface IdentifierGenerator { 24 25 /** 26 * Generates a 16 byte identifier. 27 * 28 * @return an hex encoded identifier 29 */ 30 public String generateIdentifier(); 31 32 /** Generates a random identifier. 33 * 34 * @param size number of bytes in the identifier 35 * 36 * @return the hex encoded identifier 37 */ 38 public String generateIdentifier(int size); 39 }