--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/sun/security/x509/CertificateIssuerName.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,180 @@
+/*
+ * Copyright 1997-2006 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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 javax.security.auth.x500.X500Principal;
+
+import sun.security.util.*;
+
+/**
+ * This class defines the X500Name attribute for the Certificate.
+ *
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ * @see CertAttrSet
+ */
+public class CertificateIssuerName 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.issuer";
+    /**
+     * Sub attributes name for this CertAttrSet.
+     */
+    public static final String NAME = "issuer";
+    public static final String DN_NAME = "dname";
+
+    // accessor name for cached X500Principal only
+    // do not allow a set() of this value, do not advertise with getElements()
+    public static final String DN_PRINCIPAL = "x500principal";
+
+    // Private data member
+    private X500Name    dnName;
+
+    // cached X500Principal version of the name
+    private X500Principal dnPrincipal;
+
+    /**
+     * Default constructor for the certificate attribute.
+     *
+     * @param name the X500Name
+     */
+    public CertificateIssuerName(X500Name name) {
+        this.dnName = name;
+    }
+
+    /**
+     * Create the object, decoding the values from the passed DER stream.
+     *
+     * @param in the DerInputStream to read the X500Name from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateIssuerName(DerInputStream in) throws IOException {
+        dnName = new X500Name(in);
+    }
+
+    /**
+     * Create the object, decoding the values from the passed stream.
+     *
+     * @param in the InputStream to read the X500Name from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateIssuerName(InputStream in) throws IOException {
+        DerValue derVal = new DerValue(in);
+        dnName = new X500Name(derVal);
+    }
+
+    /**
+     * Return the name as user readable string.
+     */
+    public String toString() {
+        if (dnName == null) return "";
+        return(dnName.toString());
+    }
+
+    /**
+     * Encode the name 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();
+        dnName.encode(tmp);
+
+        out.write(tmp.toByteArray());
+    }
+
+    /**
+     * Set the attribute value.
+     */
+    public void set(String name, Object obj) throws IOException {
+        if (!(obj instanceof X500Name)) {
+            throw new IOException("Attribute must be of type X500Name.");
+        }
+        if (name.equalsIgnoreCase(DN_NAME)) {
+            this.dnName = (X500Name)obj;
+            this.dnPrincipal = null;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet:CertificateIssuerName.");
+        }
+    }
+
+    /**
+     * Get the attribute value.
+     */
+    public Object get(String name) throws IOException {
+        if (name.equalsIgnoreCase(DN_NAME)) {
+            return(dnName);
+        } else if (name.equalsIgnoreCase(DN_PRINCIPAL)) {
+            if ((dnPrincipal == null) && (dnName != null)) {
+                dnPrincipal = dnName.asX500Principal();
+            }
+            return dnPrincipal;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet:CertificateIssuerName.");
+        }
+    }
+
+    /**
+     * Delete the attribute value.
+     */
+    public void delete(String name) throws IOException {
+        if (name.equalsIgnoreCase(DN_NAME)) {
+            dnName = null;
+            dnPrincipal = null;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                                  "CertAttrSet:CertificateIssuerName.");
+        }
+    }
+
+    /**
+     * Return an enumeration of names of attributes existing within this
+     * attribute.
+     */
+    public Enumeration<String> getElements() {
+        AttributeNameEnumeration elements = new AttributeNameEnumeration();
+        elements.addElement(DN_NAME);
+
+        return (elements.elements());
+    }
+
+    /**
+     * Return the name of this attribute.
+     */
+    public String getName() {
+        return(NAME);
+    }
+}