| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package com.sun.org.apache.xml.internal.security.keys.content.x509; |
| |
| import java.io.IOException; |
| import java.io.ByteArrayInputStream; |
| import java.io.InputStream; |
| import java.security.cert.X509Certificate; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| |
| import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException; |
| import com.sun.org.apache.xml.internal.security.utils.Base64; |
| import com.sun.org.apache.xml.internal.security.utils.Constants; |
| import com.sun.org.apache.xml.internal.security.utils.SignatureElementProxy; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Handles SubjectKeyIdentifier (SKI) for X.509v3. |
| * |
| * @author $Author: mullan $ |
| * @see <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/security/cert/X509Extension.html">Interface X509Extension</A> |
| */ |
| public class XMLX509SKI extends SignatureElementProxy |
| implements XMLX509DataContent { |
| |
| /** {@link java.util.logging} logging facility */ |
| static java.util.logging.Logger log = |
| java.util.logging.Logger.getLogger(XMLX509SKI.class.getName()); |
| |
| /** |
| * <CODE>SubjectKeyIdentifier (id-ce-subjectKeyIdentifier) (2.5.29.14)</CODE>: |
| * This extension identifies the public key being certified. It enables |
| * distinct keys used by the same subject to be differentiated |
| * (e.g., as key updating occurs). |
| * <BR /> |
| * A key identifer shall be unique with respect to all key identifiers |
| * for the subject with which it is used. This extension is always non-critical. |
| */ |
| public static final String SKI_OID = "2.5.29.14"; |
| |
| /** |
| * Constructor X509SKI |
| * |
| * @param doc |
| * @param skiBytes |
| */ |
| public XMLX509SKI(Document doc, byte[] skiBytes) { |
| super(doc); |
| this.addBase64Text(skiBytes); |
| } |
| |
| /** |
| * Constructor XMLX509SKI |
| * |
| * @param doc |
| * @param x509certificate |
| * @throws XMLSecurityException |
| */ |
| public XMLX509SKI(Document doc, X509Certificate x509certificate) |
| throws XMLSecurityException { |
| super(doc); |
| this.addBase64Text(XMLX509SKI.getSKIBytesFromCert(x509certificate)); |
| } |
| |
| /** |
| * Constructor XMLX509SKI |
| * |
| * @param element |
| * @param BaseURI |
| * @throws XMLSecurityException |
| */ |
| public XMLX509SKI(Element element, String BaseURI) |
| throws XMLSecurityException { |
| super(element, BaseURI); |
| } |
| |
| /** |
| * Method getSKIBytes |
| * |
| * @return the skibytes |
| * @throws XMLSecurityException |
| */ |
| public byte[] getSKIBytes() throws XMLSecurityException { |
| return this.getBytesFromTextChild(); |
| } |
| |
| /** |
| * Method getSKIBytesFromCert |
| * |
| * @param cert |
| * @return ski bytes from the given certificate |
| * |
| * @throws XMLSecurityException |
| * @see java.security.cert.X509Extension#getExtensionValue(java.lang.String) |
| */ |
| public static byte[] getSKIBytesFromCert(X509Certificate cert) |
| throws XMLSecurityException { |
| |
| if (cert.getVersion() < 3) { |
| Object exArgs[] = { new Integer(cert.getVersion()) }; |
| throw new XMLSecurityException("certificate.noSki.lowVersion", |
| exArgs); |
| } |
| |
| /* |
| * Gets the DER-encoded OCTET string for the extension value |
| * (extnValue) identified by the passed-in oid String. The oid |
| * string is represented by a set of positive whole numbers |
| * separated by periods. |
| */ |
| byte[] extensionValue = cert.getExtensionValue(XMLX509SKI.SKI_OID); |
| if (extensionValue == null) { |
| throw new XMLSecurityException("certificate.noSki.null"); |
| } |
| |
| /** |
| * Strip away first four bytes from the extensionValue |
| * The first two bytes are the tag and length of the extensionValue |
| * OCTET STRING, and the next two bytes are the tag and length of |
| * the skid OCTET STRING. |
| */ |
| byte skidValue[] = new byte[extensionValue.length - 4]; |
| |
| System.arraycopy(extensionValue, 4, skidValue, 0, skidValue.length); |
| |
| if (log.isLoggable(java.util.logging.Level.FINE)) { |
| log.log(java.util.logging.Level.FINE, "Base64 of SKI is " + Base64.encode(skidValue)); |
| } |
| |
| return skidValue; |
| } |
| |
| /** @inheritDoc */ |
| public boolean equals(Object obj) { |
| if (obj == null) { |
| return false; |
| } |
| if (!this.getClass().getName().equals(obj.getClass().getName())) { |
| return false; |
| } |
| |
| XMLX509SKI other = (XMLX509SKI) obj; |
| |
| try { |
| return java.security.MessageDigest.isEqual(other.getSKIBytes(), |
| this.getSKIBytes()); |
| } catch (XMLSecurityException ex) { |
| return false; |
| } |
| } |
| |
| /** @inheritDoc */ |
| public String getBaseLocalName() { |
| return Constants._TAG_X509SKI; |
| } |
| } |