| /* |
| * Copyright (c) 1997, 2011, 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.x509; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.Enumeration; |
| |
| import sun.security.util.*; |
| |
| /** |
| * This class defines the AlgorithmId for the Certificate. |
| * |
| * @author Amit Kapoor |
| * @author Hemma Prafullchandra |
| */ |
| public class CertificateAlgorithmId implements CertAttrSet<String> { |
| private AlgorithmId algId; |
| |
| /** |
| * Identifier for this attribute, to be used with the |
| * get, set, delete methods of Certificate, x509 type. |
| */ |
| public static final String IDENT = "x509.info.algorithmID"; |
| /** |
| * Sub attributes name for this CertAttrSet. |
| */ |
| public static final String NAME = "algorithmID"; |
| |
| /** |
| * Identifier to be used with get, set, and delete methods. When |
| * using this identifier the associated object being passed in or |
| * returned is an instance of AlgorithmId. |
| * @see sun.security.x509.AlgorithmId |
| */ |
| public static final String ALGORITHM = "algorithm"; |
| |
| /** |
| * Default constructor for the certificate attribute. |
| * |
| * @param algId the Algorithm identifier |
| */ |
| public CertificateAlgorithmId(AlgorithmId algId) { |
| this.algId = algId; |
| } |
| |
| /** |
| * Create the object, decoding the values from the passed DER stream. |
| * |
| * @param in the DerInputStream to read the serial number from. |
| * @exception IOException on decoding errors. |
| */ |
| public CertificateAlgorithmId(DerInputStream in) throws IOException { |
| DerValue val = in.getDerValue(); |
| algId = AlgorithmId.parse(val); |
| } |
| |
| /** |
| * Create the object, decoding the values from the passed stream. |
| * |
| * @param in the InputStream to read the serial number from. |
| * @exception IOException on decoding errors. |
| */ |
| public CertificateAlgorithmId(InputStream in) throws IOException { |
| DerValue val = new DerValue(in); |
| algId = AlgorithmId.parse(val); |
| } |
| |
| /** |
| * Return the algorithm identifier as user readable string. |
| */ |
| public String toString() { |
| if (algId == null) return ""; |
| return (algId.toString() + |
| ", OID = " + (algId.getOID()).toString() + "\n"); |
| } |
| |
| /** |
| * Encode the algorithm identifier in DER form to the stream. |
| * |
| * @param out the DerOutputStream to marshal the contents to. |
| * @exception IOException on errors. |
| */ |
| public void encode(OutputStream out) throws IOException { |
| DerOutputStream tmp = new DerOutputStream(); |
| algId.encode(tmp); |
| |
| out.write(tmp.toByteArray()); |
| } |
| |
| /** |
| * Set the attribute value. |
| */ |
| public void set(String name, Object obj) throws IOException { |
| if (!(obj instanceof AlgorithmId)) { |
| throw new IOException("Attribute must be of type AlgorithmId."); |
| } |
| if (name.equalsIgnoreCase(ALGORITHM)) { |
| algId = (AlgorithmId)obj; |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:CertificateAlgorithmId."); |
| } |
| } |
| |
| /** |
| * Get the attribute value. |
| */ |
| public AlgorithmId get(String name) throws IOException { |
| if (name.equalsIgnoreCase(ALGORITHM)) { |
| return (algId); |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:CertificateAlgorithmId."); |
| } |
| } |
| |
| /** |
| * Delete the attribute value. |
| */ |
| public void delete(String name) throws IOException { |
| if (name.equalsIgnoreCase(ALGORITHM)) { |
| algId = null; |
| } else { |
| throw new IOException("Attribute name not recognized by " + |
| "CertAttrSet:CertificateAlgorithmId."); |
| } |
| } |
| |
| /** |
| * Return an enumeration of names of attributes existing within this |
| * attribute. |
| */ |
| public Enumeration<String> getElements() { |
| AttributeNameEnumeration elements = new AttributeNameEnumeration(); |
| elements.addElement(ALGORITHM); |
| return (elements.elements()); |
| } |
| |
| /** |
| * Return the name of this attribute. |
| */ |
| public String getName() { |
| return (NAME); |
| } |
| } |