--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/pkcs11/MessageDigest/TestCloning.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2012, 2017, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 6414899
+ * @summary Ensure the cloning functionality works.
+ * @author Valerie Peng
+ * @library ..
+ * @key randomness
+ * @modules jdk.crypto.cryptoki
+ * @run main/othervm TestCloning
+ * @run main/othervm TestCloning sm
+ */
+
+import java.security.MessageDigest;
+import java.security.Provider;
+import java.util.Arrays;
+import java.util.Random;
+
+public class TestCloning extends PKCS11Test {
+
+    private static final String[] ALGOS = {
+        "MD2", "MD5", "SHA1", "SHA-224", "SHA-256", "SHA-384", "SHA-512"
+    };
+
+    public static void main(String[] args) throws Exception {
+        main(new TestCloning(), args);
+    }
+
+    private static final byte[] data1 = new byte[10];
+    private static final byte[] data2 = new byte[10*1024];
+
+
+    @Override
+    public void main(Provider p) throws Exception {
+        Random r = new Random();
+        byte[] data1 = new byte[10];
+        byte[] data2 = new byte[2*1024];
+        r.nextBytes(data1);
+        r.nextBytes(data2);
+        System.out.println("Testing against provider " + p.getName());
+        for (int i = 0; i < ALGOS.length; i++) {
+            if (p.getService("MessageDigest", ALGOS[i]) == null) {
+                System.out.println(ALGOS[i] + " is not supported, skipping");
+                continue;
+            } else {
+                System.out.println("Testing " + ALGOS[i] + " of " + p.getName());
+                MessageDigest md = MessageDigest.getInstance(ALGOS[i], p);
+                try {
+                    md = testCloning(md, p);
+                    // repeat the test again after generating digest once
+                    for (int j = 0; j < 10; j++) {
+                        md = testCloning(md, p);
+                    }
+                } catch (Exception ex) {
+                    if (ALGOS[i] == "MD2" &&
+                        p.getName().equalsIgnoreCase("SunPKCS11-NSS")) {
+                        // known bug in NSS; ignore for now
+                        System.out.println("Ignore Known bug in MD2 of NSS");
+                        continue;
+                    }
+                    throw ex;
+                }
+            }
+        }
+    }
+
+    private static MessageDigest testCloning(MessageDigest mdObj, Provider p)
+        throws Exception {
+
+        // copy#0: clone at state BLANK w/o any data
+        MessageDigest mdCopy0 = (MessageDigest) mdObj.clone();
+
+        // copy#1: clone again at state BUFFERED w/ very short data
+        mdObj.update(data1);
+        mdCopy0.update(data1);
+        MessageDigest mdCopy1 = (MessageDigest) mdObj.clone();
+
+        // copy#2: clone again after updating it w/ long data to trigger
+        // the state into INIT
+        mdObj.update(data2);
+        mdCopy0.update(data2);
+        mdCopy1.update(data2);
+        MessageDigest mdCopy2 = (MessageDigest) mdObj.clone();
+
+        // copy#3: clone again after updating it w/ very short data
+        mdObj.update(data1);
+        mdCopy0.update(data1);
+        mdCopy1.update(data1);
+        mdCopy2.update(data1);
+        MessageDigest mdCopy3 = (MessageDigest) mdObj.clone();
+
+        // copy#4: clone again after updating it w/ long data
+        mdObj.update(data2);
+        mdCopy0.update(data2);
+        mdCopy1.update(data2);
+        mdCopy2.update(data2);
+        mdCopy3.update(data2);
+        MessageDigest mdCopy4 = (MessageDigest) mdObj.clone();
+
+        // check digest equalities
+        byte[] answer = mdObj.digest();
+        byte[] result0 = mdCopy0.digest();
+        byte[] result1 = mdCopy1.digest();
+        byte[] result2 = mdCopy2.digest();
+        byte[] result3 = mdCopy3.digest();
+        byte[] result4 = mdCopy4.digest();
+
+
+        check(answer, result0, "copy0");
+        check(answer, result1, "copy1");
+        check(answer, result2, "copy2");
+        check(answer, result3, "copy3");
+        check(answer, result4, "copy4");
+
+        return mdCopy3;
+    }
+
+    private static void check(byte[] d1, byte[] d2, String copyName)
+            throws Exception {
+        if (Arrays.equals(d1, d2) == false) {
+            throw new RuntimeException(copyName + " digest mismatch!");
+        }
+    }
+}
+