--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/sun/security/x509/CertificateAlgorithmId.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,170 @@
+/*
+ * 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.InputStream;
+import java.io.OutputStream;
+import java.util.Enumeration;
+
+import sun.security.util.*;
+
+/**
+ * This class defines the AlgorithmId for the Certificate.
+ *
+ * @author Amit Kapoor
+ * @author Hemma Prafullchandra
+ */
+public class CertificateAlgorithmId implements CertAttrSet<String> {
+    private AlgorithmId algId;
+
+    /**
+     * Identifier for this attribute, to be used with the
+     * get, set, delete methods of Certificate, x509 type.
+     */
+    public static final String IDENT = "x509.info.algorithmID";
+    /**
+     * Sub attributes name for this CertAttrSet.
+     */
+    public static final String NAME = "algorithmID";
+
+    /**
+     * Identifier to be used with get, set, and delete methods. When
+     * using this identifier the associated object being passed in or
+     * returned is an instance of AlgorithmId.
+     * @see sun.security.x509.AlgorithmId
+     */
+    public static final String ALGORITHM = "algorithm";
+
+    /**
+     * Default constructor for the certificate attribute.
+     *
+     * @param algId the Algorithm identifier
+     */
+    public CertificateAlgorithmId(AlgorithmId algId) {
+        this.algId = algId;
+    }
+
+    /**
+     * Create the object, decoding the values from the passed DER stream.
+     *
+     * @param in the DerInputStream to read the serial number from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateAlgorithmId(DerInputStream in) throws IOException {
+        DerValue val = in.getDerValue();
+        algId = AlgorithmId.parse(val);
+    }
+
+    /**
+     * Create the object, decoding the values from the passed stream.
+     *
+     * @param in the InputStream to read the serial number from.
+     * @exception IOException on decoding errors.
+     */
+    public CertificateAlgorithmId(InputStream in) throws IOException {
+        DerValue val = new DerValue(in);
+        algId = AlgorithmId.parse(val);
+    }
+
+    /**
+     * Return the algorithm identifier as user readable string.
+     */
+    public String toString() {
+        if (algId == null) return "";
+        return (algId.toString() +
+                ", OID = " + (algId.getOID()).toString() + "\n");
+    }
+
+    /**
+     * Encode the algorithm identifier 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();
+        algId.encode(tmp);
+
+        out.write(tmp.toByteArray());
+    }
+
+    /**
+     * Set the attribute value.
+     */
+    public void set(String name, Object obj) throws IOException {
+        if (!(obj instanceof AlgorithmId)) {
+            throw new IOException("Attribute must be of type AlgorithmId.");
+        }
+        if (name.equalsIgnoreCase(ALGORITHM)) {
+            algId = (AlgorithmId)obj;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                              "CertAttrSet:CertificateAlgorithmId.");
+        }
+    }
+
+    /**
+     * Get the attribute value.
+     */
+    public AlgorithmId get(String name) throws IOException {
+        if (name.equalsIgnoreCase(ALGORITHM)) {
+            return (algId);
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                               "CertAttrSet:CertificateAlgorithmId.");
+        }
+    }
+
+    /**
+     * Delete the attribute value.
+     */
+    public void delete(String name) throws IOException {
+        if (name.equalsIgnoreCase(ALGORITHM)) {
+            algId = null;
+        } else {
+            throw new IOException("Attribute name not recognized by " +
+                               "CertAttrSet:CertificateAlgorithmId.");
+        }
+    }
+
+    /**
+     * Return an enumeration of names of attributes existing within this
+     * attribute.
+     */
+    public Enumeration<String> getElements() {
+        AttributeNameEnumeration elements = new AttributeNameEnumeration();
+        elements.addElement(ALGORITHM);
+        return (elements.elements());
+    }
+
+   /**
+    * Return the name of this attribute.
+    */
+   public String getName() {
+      return (NAME);
+   }
+}