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Java example source code file (CRLNumberExtension.java)
The CRLNumberExtension.java Java example source code/* * 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.OutputStream; import java.math.BigInteger; import java.util.Enumeration; import sun.security.util.*; /** * Represent the CRL Number Extension. * * <p>This extension, if present, conveys a monotonically increasing * sequence number for each CRL issued by a given CA through a specific * CA X.500 Directory entry or CRL distribution point. This extension * allows users to easily determine when a particular CRL supersedes * another CRL. * * @author Hemma Prafullchandra * @see Extension * @see CertAttrSet */ public class CRLNumberExtension extends Extension implements CertAttrSet<String> { /** * Attribute name. */ public static final String NAME = "CRLNumber"; public static final String NUMBER = "value"; private static final String LABEL = "CRL Number"; private BigInteger crlNumber = null; private String extensionName; private String extensionLabel; // Encode this extension value private void encodeThis() throws IOException { if (crlNumber == null) { this.extensionValue = null; return; } DerOutputStream os = new DerOutputStream(); os.putInteger(this.crlNumber); this.extensionValue = os.toByteArray(); } /** * Create a CRLNumberExtension with the integer value . * The criticality is set to false. * * @param crlNum the value to be set for the extension. */ public CRLNumberExtension(int crlNum) throws IOException { this(PKIXExtensions.CRLNumber_Id, false, BigInteger.valueOf(crlNum), NAME, LABEL); } /** * Create a CRLNumberExtension with the BigInteger value . * The criticality is set to false. * * @param crlNum the value to be set for the extension. */ public CRLNumberExtension(BigInteger crlNum) throws IOException { this(PKIXExtensions.CRLNumber_Id, false, crlNum, NAME, LABEL); } /** * Creates the extension (also called by the subclass). */ protected CRLNumberExtension(ObjectIdentifier extensionId, boolean isCritical, BigInteger crlNum, String extensionName, String extensionLabel) throws IOException { this.extensionId = extensionId; this.critical = isCritical; this.crlNumber = crlNum; this.extensionName = extensionName; this.extensionLabel = extensionLabel; encodeThis(); } /** * Create the extension from the passed DER encoded value of the same. * * @param critical true if the extension is to be treated as critical. * @param value an array of DER encoded bytes of the actual value. * @exception ClassCastException if value is not an array of bytes * @exception IOException on error. */ public CRLNumberExtension(Boolean critical, Object value) throws IOException { this(PKIXExtensions.CRLNumber_Id, critical, value, NAME, LABEL); } /** * Creates the extension (also called by the subclass). */ protected CRLNumberExtension(ObjectIdentifier extensionId, Boolean critical, Object value, String extensionName, String extensionLabel) throws IOException { this.extensionId = extensionId; this.critical = critical.booleanValue(); this.extensionValue = (byte[]) value; DerValue val = new DerValue(this.extensionValue); this.crlNumber = val.getBigInteger(); this.extensionName = extensionName; this.extensionLabel = extensionLabel; } /** * Set the attribute value. */ public void set(String name, Object obj) throws IOException { if (name.equalsIgnoreCase(NUMBER)) { if (!(obj instanceof BigInteger)) { throw new IOException("Attribute must be of type BigInteger."); } crlNumber = (BigInteger)obj; } else { throw new IOException("Attribute name not recognized by" + " CertAttrSet:" + extensionName + "."); } encodeThis(); } /** * Get the attribute value. */ public BigInteger get(String name) throws IOException { if (name.equalsIgnoreCase(NUMBER)) { if (crlNumber == null) return null; else return crlNumber; } else { throw new IOException("Attribute name not recognized by" + " CertAttrSet:" + extensionName + "."); } } /** * Delete the attribute value. */ public void delete(String name) throws IOException { if (name.equalsIgnoreCase(NUMBER)) { crlNumber = null; } else { throw new IOException("Attribute name not recognized by" + " CertAttrSet:" + extensionName + "."); } encodeThis(); } /** * Returns a printable representation of the CRLNumberExtension. */ public String toString() { String s = super.toString() + extensionLabel + ": " + ((crlNumber == null) ? "" : Debug.toHexString(crlNumber)) + "\n"; return (s); } /** * Write the extension to the DerOutputStream. * * @param out the DerOutputStream to write the extension to. * @exception IOException on encoding errors. */ public void encode(OutputStream out) throws IOException { DerOutputStream tmp = new DerOutputStream(); encode(out, PKIXExtensions.CRLNumber_Id, true); } /** * Write the extension to the DerOutputStream. * (Also called by the subclass) */ protected void encode(OutputStream out, ObjectIdentifier extensionId, boolean isCritical) throws IOException { DerOutputStream tmp = new DerOutputStream(); if (this.extensionValue == null) { this.extensionId = extensionId; this.critical = isCritical; encodeThis(); } super.encode(tmp); out.write(tmp.toByteArray()); } /** * Return an enumeration of names of attributes existing within this * attribute. */ public Enumeration<String> getElements() { AttributeNameEnumeration elements = new AttributeNameEnumeration(); elements.addElement(NUMBER); return (elements.elements()); } /** * Return the name of this attribute. */ public String getName() { return (extensionName); } } Other Java examples (source code examples)Here is a short list of links related to this Java CRLNumberExtension.java source code file: |
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