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Java example source code file (ExtendedKeyUsageExtension.java)
The ExtendedKeyUsageExtension.java Java example source code/* * Copyright (c) 2000, 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.util.ArrayList; import java.util.Enumeration; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Vector; import sun.security.util.DerValue; import sun.security.util.DerOutputStream; import sun.security.util.ObjectIdentifier; /** * This class defines the Extended Key Usage Extension, which * indicates one or more purposes for which the certified public key * may be used, in addition to or in place of the basic purposes * indicated in the key usage extension field. This field is defined * as follows:<p> * * id-ce-extKeyUsage OBJECT IDENTIFIER ::= {id-ce 37}<p> * * ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId<p> * * KeyPurposeId ::= OBJECT IDENTIFIER<p> * * Key purposes may be defined by any organization with a need. Object * identifiers used to identify key purposes shall be assigned in * accordance with IANA or ITU-T Rec. X.660 | ISO/IEC/ITU 9834-1.<p> * * This extension may, at the option of the certificate issuer, be * either critical or non-critical.<p> * * If the extension is flagged critical, then the certificate MUST be * used only for one of the purposes indicated.<p> * * If the extension is flagged non-critical, then it indicates the * intended purpose or purposes of the key, and may be used in finding * the correct key/certificate of an entity that has multiple * keys/certificates. It is an advisory field and does not imply that * usage of the key is restricted by the certification authority to * the purpose indicated. Certificate using applications may * nevertheless require that a particular purpose be indicated in * order for the certificate to be acceptable to that application.<p> * If a certificate contains both a critical key usage field and a * critical extended key usage field, then both fields MUST be * processed independently and the certificate MUST only be used for a * purpose consistent with both fields. If there is no purpose * consistent with both fields, then the certificate MUST NOT be used * for any purpose.<p> * * @since 1.4 */ public class ExtendedKeyUsageExtension extends Extension implements CertAttrSet<String> { /** * Identifier for this attribute, to be used with the * get, set, delete methods of Certificate, x509 type. */ public static final String IDENT = "x509.info.extensions.ExtendedKeyUsage"; /** * Attribute names. */ public static final String NAME = "ExtendedKeyUsage"; public static final String USAGES = "usages"; // OID defined in RFC 3280 Sections 4.2.1.13 // more from http://www.alvestrand.no/objectid/1.3.6.1.5.5.7.3.html private static final Map <ObjectIdentifier, String> map = new HashMap <ObjectIdentifier, String> (); private static final int[] anyExtendedKeyUsageOidData = {2, 5, 29, 37, 0}; private static final int[] serverAuthOidData = {1, 3, 6, 1, 5, 5, 7, 3, 1}; private static final int[] clientAuthOidData = {1, 3, 6, 1, 5, 5, 7, 3, 2}; private static final int[] codeSigningOidData = {1, 3, 6, 1, 5, 5, 7, 3, 3}; private static final int[] emailProtectionOidData = {1, 3, 6, 1, 5, 5, 7, 3, 4}; private static final int[] ipsecEndSystemOidData = {1, 3, 6, 1, 5, 5, 7, 3, 5}; private static final int[] ipsecTunnelOidData = {1, 3, 6, 1, 5, 5, 7, 3, 6}; private static final int[] ipsecUserOidData = {1, 3, 6, 1, 5, 5, 7, 3, 7}; private static final int[] timeStampingOidData = {1, 3, 6, 1, 5, 5, 7, 3, 8}; private static final int[] OCSPSigningOidData = {1, 3, 6, 1, 5, 5, 7, 3, 9}; static { map.put(ObjectIdentifier.newInternal(anyExtendedKeyUsageOidData), "anyExtendedKeyUsage"); map.put(ObjectIdentifier.newInternal(serverAuthOidData), "serverAuth"); map.put(ObjectIdentifier.newInternal(clientAuthOidData), "clientAuth"); map.put(ObjectIdentifier.newInternal(codeSigningOidData), "codeSigning"); map.put(ObjectIdentifier.newInternal(emailProtectionOidData), "emailProtection"); map.put(ObjectIdentifier.newInternal(ipsecEndSystemOidData), "ipsecEndSystem"); map.put(ObjectIdentifier.newInternal(ipsecTunnelOidData), "ipsecTunnel"); map.put(ObjectIdentifier.newInternal(ipsecUserOidData), "ipsecUser"); map.put(ObjectIdentifier.newInternal(timeStampingOidData), "timeStamping"); map.put(ObjectIdentifier.newInternal(OCSPSigningOidData), "OCSPSigning"); }; /** * Vector of KeyUsages for this object. */ private Vector<ObjectIdentifier> keyUsages; // Encode this extension value. private void encodeThis() throws IOException { if (keyUsages == null || keyUsages.isEmpty()) { this.extensionValue = null; return; } DerOutputStream os = new DerOutputStream(); DerOutputStream tmp = new DerOutputStream(); for (int i = 0; i < keyUsages.size(); i++) { tmp.putOID(keyUsages.elementAt(i)); } os.write(DerValue.tag_Sequence, tmp); this.extensionValue = os.toByteArray(); } /** * Create a ExtendedKeyUsageExtension object from * a Vector of Key Usages; the criticality is set to false. * * @param keyUsages the Vector of KeyUsages (ObjectIdentifiers) */ public ExtendedKeyUsageExtension(Vector<ObjectIdentifier> keyUsages) throws IOException { this(Boolean.FALSE, keyUsages); } /** * Create a ExtendedKeyUsageExtension object from * a Vector of KeyUsages with specified criticality. * * @param critical true if the extension is to be treated as critical. * @param keyUsages the Vector of KeyUsages (ObjectIdentifiers) */ public ExtendedKeyUsageExtension(Boolean critical, Vector<ObjectIdentifier> keyUsages) throws IOException { this.keyUsages = keyUsages; this.extensionId = PKIXExtensions.ExtendedKeyUsage_Id; this.critical = critical.booleanValue(); encodeThis(); } /** * Create the extension from its DER encoded value and criticality. * * @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 ExtendedKeyUsageExtension(Boolean critical, Object value) throws IOException { this.extensionId = PKIXExtensions.ExtendedKeyUsage_Id; this.critical = critical.booleanValue(); this.extensionValue = (byte[]) value; DerValue val = new DerValue(this.extensionValue); if (val.tag != DerValue.tag_Sequence) { throw new IOException("Invalid encoding for " + "ExtendedKeyUsageExtension."); } keyUsages = new Vector<ObjectIdentifier>(); while (val.data.available() != 0) { DerValue seq = val.data.getDerValue(); ObjectIdentifier usage = seq.getOID(); keyUsages.addElement(usage); } } /** * Return the extension as user readable string. */ public String toString() { if (keyUsages == null) return ""; String usage = " "; boolean first = true; for (ObjectIdentifier oid: keyUsages) { if(!first) { usage += "\n "; } String result = map.get(oid); if (result != null) { usage += result; } else { usage += oid.toString(); } first = false; } return super.toString() + "ExtendedKeyUsages [\n" + usage + "\n]\n"; } /** * 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(); if (extensionValue == null) { extensionId = PKIXExtensions.ExtendedKeyUsage_Id; critical = false; encodeThis(); } super.encode(tmp); out.write(tmp.toByteArray()); } /** * Set the attribute value. */ @SuppressWarnings("unchecked") // Checked with instanceof public void set(String name, Object obj) throws IOException { if (name.equalsIgnoreCase(USAGES)) { if (!(obj instanceof Vector)) { throw new IOException("Attribute value should be of type Vector."); } this.keyUsages = (Vector<ObjectIdentifier>)obj; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:ExtendedKeyUsageExtension."); } encodeThis(); } /** * Get the attribute value. */ public Vector<ObjectIdentifier> get(String name) throws IOException { if (name.equalsIgnoreCase(USAGES)) { //XXXX May want to consider cloning this return keyUsages; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:ExtendedKeyUsageExtension."); } } /** * Delete the attribute value. */ public void delete(String name) throws IOException { if (name.equalsIgnoreCase(USAGES)) { keyUsages = null; } else { throw new IOException("Attribute name [" + name + "] not recognized by " + "CertAttrSet:ExtendedKeyUsageExtension."); } encodeThis(); } /** * Return an enumeration of names of attributes existing within this * attribute. */ public Enumeration<String> getElements() { AttributeNameEnumeration elements = new AttributeNameEnumeration(); elements.addElement(USAGES); return (elements.elements()); } /** * Return the name of this attribute. */ public String getName() { return (NAME); } public List<String> getExtendedKeyUsage() { List<String> al = new ArrayList Other Java examples (source code examples)Here is a short list of links related to this Java ExtendedKeyUsageExtension.java source code file: |
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