0N/A/*
2362N/A * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage sun.security.x509;
0N/A
0N/Aimport java.io.IOException;
0N/Aimport java.io.OutputStream;
0N/Aimport java.util.Enumeration;
0N/A
0N/Aimport sun.security.util.*;
0N/A
0N/A/**
0N/A * Represent the Subject Key Identifier Extension.
0N/A *
0N/A * This extension, if present, provides a means of identifying the particular
0N/A * public key used in an application. This extension by default is marked
0N/A * non-critical.
0N/A *
0N/A * <p>Extensions are addiitonal attributes which can be inserted in a X509
0N/A * v3 certificate. For example a "Driving License Certificate" could have
0N/A * the driving license number as a extension.
0N/A *
0N/A * <p>Extensions are represented as a sequence of the extension identifier
0N/A * (Object Identifier), a boolean flag stating whether the extension is to
0N/A * be treated as being critical and the extension value itself (this is again
0N/A * a DER encoding of the extension value).
0N/A *
0N/A * @author Amit Kapoor
0N/A * @author Hemma Prafullchandra
0N/A * @see Extension
0N/A * @see CertAttrSet
0N/A */
0N/Apublic class SubjectKeyIdentifierExtension extends Extension
0N/Aimplements CertAttrSet<String> {
0N/A /**
0N/A * Identifier for this attribute, to be used with the
0N/A * get, set, delete methods of Certificate, x509 type.
0N/A */
0N/A public static final String IDENT =
0N/A "x509.info.extensions.SubjectKeyIdentifier";
0N/A /**
0N/A * Attribute names.
0N/A */
0N/A public static final String NAME = "SubjectKeyIdentifier";
0N/A public static final String KEY_ID = "key_id";
0N/A
0N/A // Private data member
0N/A private KeyIdentifier id = null;
0N/A
0N/A // Encode this extension value
0N/A private void encodeThis() throws IOException {
0N/A if (id == null) {
0N/A this.extensionValue = null;
0N/A return;
0N/A }
0N/A DerOutputStream os = new DerOutputStream();
0N/A id.encode(os);
0N/A this.extensionValue = os.toByteArray();
0N/A }
0N/A
0N/A /**
0N/A * Create a SubjectKeyIdentifierExtension with the passed octet string.
0N/A * The criticality is set to False.
0N/A * @param octetString the octet string identifying the key identifier.
0N/A */
0N/A public SubjectKeyIdentifierExtension(byte[] octetString)
0N/A throws IOException {
0N/A id = new KeyIdentifier(octetString);
0N/A
0N/A this.extensionId = PKIXExtensions.SubjectKey_Id;
0N/A this.critical = false;
0N/A encodeThis();
0N/A }
0N/A
0N/A /**
0N/A * Create the extension from the passed DER encoded value.
0N/A *
0N/A * @param critical true if the extension is to be treated as critical.
0N/A * @param value an array of DER encoded bytes of the actual value.
0N/A * @exception ClassCastException if value is not an array of bytes
0N/A * @exception IOException on error.
0N/A */
0N/A public SubjectKeyIdentifierExtension(Boolean critical, Object value)
0N/A throws IOException {
0N/A this.extensionId = PKIXExtensions.SubjectKey_Id;
0N/A this.critical = critical.booleanValue();
0N/A this.extensionValue = (byte[]) value;
0N/A DerValue val = new DerValue(this.extensionValue);
0N/A this.id = new KeyIdentifier(val);
0N/A }
0N/A
0N/A /**
0N/A * Returns a printable representation.
0N/A */
0N/A public String toString() {
0N/A return super.toString() + "SubjectKeyIdentifier [\n"
0N/A + String.valueOf(id) + "]\n";
0N/A }
0N/A
0N/A /**
0N/A * Write the extension to the OutputStream.
0N/A *
0N/A * @param out the OutputStream to write the extension to.
0N/A * @exception IOException on encoding errors.
0N/A */
0N/A public void encode(OutputStream out) throws IOException {
0N/A DerOutputStream tmp = new DerOutputStream();
0N/A if (extensionValue == null) {
0N/A extensionId = PKIXExtensions.SubjectKey_Id;
0N/A critical = false;
0N/A encodeThis();
0N/A }
0N/A super.encode(tmp);
0N/A out.write(tmp.toByteArray());
0N/A }
0N/A
0N/A /**
0N/A * Set the attribute value.
0N/A */
0N/A public void set(String name, Object obj) throws IOException {
0N/A if (name.equalsIgnoreCase(KEY_ID)) {
0N/A if (!(obj instanceof KeyIdentifier)) {
0N/A throw new IOException("Attribute value should be of" +
0N/A " type KeyIdentifier.");
0N/A }
0N/A id = (KeyIdentifier)obj;
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet:SubjectKeyIdentifierExtension.");
0N/A }
0N/A encodeThis();
0N/A }
0N/A
0N/A /**
0N/A * Get the attribute value.
0N/A */
0N/A public Object get(String name) throws IOException {
0N/A if (name.equalsIgnoreCase(KEY_ID)) {
0N/A return (id);
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet:SubjectKeyIdentifierExtension.");
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * Delete the attribute value.
0N/A */
0N/A public void delete(String name) throws IOException {
0N/A if (name.equalsIgnoreCase(KEY_ID)) {
0N/A id = null;
0N/A } else {
0N/A throw new IOException("Attribute name not recognized by " +
0N/A "CertAttrSet:SubjectKeyIdentifierExtension.");
0N/A }
0N/A encodeThis();
0N/A }
0N/A
0N/A /**
0N/A * Return an enumeration of names of attributes existing within this
0N/A * attribute.
0N/A */
0N/A public Enumeration<String> getElements() {
0N/A AttributeNameEnumeration elements = new AttributeNameEnumeration();
0N/A elements.addElement(KEY_ID);
0N/A
0N/A return (elements.elements());
0N/A }
0N/A
0N/A /**
0N/A * Return the name of this attribute.
0N/A */
0N/A public String getName() {
0N/A return (NAME);
0N/A }
0N/A}