--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/security/interfaces/DSAPublicKey.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 1996, 2013, 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 java.security.interfaces;
+
+import java.math.BigInteger;
+
+/**
+ * The interface to a DSA public key. DSA (Digital Signature Algorithm)
+ * is defined in NIST's FIPS-186.
+ *
+ * @see java.security.Key
+ * @see java.security.Signature
+ * @see DSAKey
+ * @see DSAPrivateKey
+ *
+ * @author Benjamin Renaud
+ * @since 1.1
+ */
+public interface DSAPublicKey extends DSAKey, java.security.PublicKey {
+
+    // Declare serialVersionUID to be compatible with JDK1.1
+
+   /**
+    * The class fingerprint that is set to indicate
+    * serialization compatibility with a previous
+    * version of the class.
+    */
+    static final long serialVersionUID = 1234526332779022332L;
+
+    /**
+     * Returns the value of the public key, {@code y}.
+     *
+     * @return the value of the public key, {@code y}.
+     */
+    public BigInteger getY();
+}