1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.directory.server.kerberos.shared.crypto.checksum; 21 22 23 import org.apache.directory.server.kerberos.shared.crypto.encryption.KeyUsage; 24 import org.apache.directory.shared.kerberos.crypto.checksum.ChecksumType; 25 26 27 /** 28 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 29 */ 30 public interface ChecksumEngine 31 { 32 /** 33 * Returns the checksum type of this checksum engine. 34 * 35 * @return The checksum type. 36 */ 37 ChecksumType checksumType(); 38 39 40 /** 41 * Calculate a checksum given raw bytes and an (optional) key. 42 * 43 * @param data The data 44 * @param key The key 45 * @param usage The Key usage number 46 * @return The checksum value. 47 */ 48 byte[] calculateChecksum( byte[] data, byte[] key, KeyUsage usage ); 49 }