| /* |
| * Copyright (c) 2005, 2009, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.krb5.internal; |
| |
| import sun.security.util.*; |
| import sun.security.krb5.Asn1Exception; |
| import java.io.IOException; |
| import sun.security.krb5.internal.util.KerberosString; |
| |
| /** |
| * Implements the ASN.1 ETYPE-INFO-ENTRY type. |
| * |
| * ETYPE-INFO-ENTRY ::= SEQUENCE { |
| * etype [0] Int32, |
| * salt [1] OCTET STRING OPTIONAL |
| * } |
| * |
| * @author Seema Malkani |
| */ |
| |
| public class ETypeInfo { |
| |
| private int etype; |
| private String salt = null; |
| |
| private static final byte TAG_TYPE = 0; |
| private static final byte TAG_VALUE = 1; |
| |
| private ETypeInfo() { |
| } |
| |
| public ETypeInfo(int etype, String salt) { |
| this.etype = etype; |
| this.salt = salt; |
| } |
| |
| public Object clone() { |
| return new ETypeInfo(etype, salt); |
| } |
| |
| /** |
| * Constructs a ETypeInfo object. |
| * @param encoding a DER-encoded data. |
| * @exception Asn1Exception if an error occurs while decoding an |
| * ASN1 encoded data. |
| * @exception IOException if an I/O error occurs while reading encoded data. |
| */ |
| public ETypeInfo(DerValue encoding) throws Asn1Exception, IOException { |
| DerValue der = null; |
| |
| if (encoding.getTag() != DerValue.tag_Sequence) { |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| |
| // etype |
| der = encoding.getData().getDerValue(); |
| if ((der.getTag() & 0x1F) == 0x00) { |
| this.etype = der.getData().getBigInteger().intValue(); |
| } |
| else |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| |
| // salt |
| if (encoding.getData().available() > 0) { |
| der = encoding.getData().getDerValue(); |
| if ((der.getTag() & 0x1F) == 0x01) { |
| byte[] saltBytes = der.getData().getOctetString(); |
| |
| // Although salt is defined as an OCTET STRING, it's the |
| // encoding from of a string. As RFC 4120 says: |
| // |
| // "The salt, ..., is also completely unspecified with respect |
| // to character set and is probably locale-specific". |
| // |
| // It's known that this field is using the same encoding as |
| // KerberosString in most implementations. |
| |
| if (KerberosString.MSNAME) { |
| this.salt = new String(saltBytes, "UTF8"); |
| } else { |
| this.salt = new String(saltBytes); |
| } |
| } |
| } |
| |
| if (encoding.getData().available() > 0) |
| throw new Asn1Exception(Krb5.ASN1_BAD_ID); |
| } |
| |
| /** |
| * Encodes this object to an OutputStream. |
| * |
| * @return byte array of the encoded data. |
| * @exception IOException if an I/O error occurs while reading encoded data. |
| * @exception Asn1Exception on encoding errors. |
| */ |
| public byte[] asn1Encode() throws Asn1Exception, IOException { |
| |
| DerOutputStream bytes = new DerOutputStream(); |
| DerOutputStream temp = new DerOutputStream(); |
| |
| temp.putInteger(etype); |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, |
| TAG_TYPE), temp); |
| |
| if (salt != null) { |
| temp = new DerOutputStream(); |
| if (KerberosString.MSNAME) { |
| temp.putOctetString(salt.getBytes("UTF8")); |
| } else { |
| temp.putOctetString(salt.getBytes()); |
| } |
| bytes.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, |
| TAG_VALUE), temp); |
| } |
| |
| temp = new DerOutputStream(); |
| temp.write(DerValue.tag_Sequence, bytes); |
| return temp.toByteArray(); |
| } |
| |
| // accessor methods |
| public int getEType() { |
| return etype; |
| } |
| |
| public String getSalt() { |
| return salt; |
| } |
| |
| } |