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.io.decoder; 21 22 23 import java.util.Enumeration; 24 import java.util.HashSet; 25 import java.util.Set; 26 27 import org.apache.directory.server.kerberos.shared.crypto.encryption.EncryptionType; 28 import org.apache.directory.shared.asn1.der.DEREncodable; 29 import org.apache.directory.shared.asn1.der.DERInteger; 30 import org.apache.directory.shared.asn1.der.DERSequence; 31 32 33 /** 34 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 35 * @version $Rev: 590715 $, $Date: 2007-10-31 16:23:32 +0100 (Mi, 31 Okt 2007) $ 36 */ 37 public class EncryptionTypeDecoder 38 { 39 /** 40 * etype[8] SEQUENCE OF INTEGER, -- EncryptionType, 41 * -- in preference order 42 */ 43 protected static Set<EncryptionType> decode( DERSequence sequence ) 44 { 45 Set<EncryptionType> eTypes = new HashSet<EncryptionType>( sequence.size() ); 46 47 int ii = 0; 48 49 for ( Enumeration<DEREncodable> e = sequence.getObjects(); e.hasMoreElements(); ) 50 { 51 DERInteger object = ( DERInteger ) e.nextElement(); 52 eTypes.add( EncryptionType.getTypeByOrdinal( object.intValue() ) ); 53 ii++; 54 } 55 56 return eTypes; 57 } 58 }