--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/security/provider/MessageDigest/TestSHAClone.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2002-2003 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.
+ *
+ * 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.
+ */
+
+/**
+ * @test
+ * @bug 4775971
+ * @summary test the clone implementation of SHA, SHA-256,
+ *          SHA-384, SHA-512 MessageDigest implementation.
+ */
+import java.security.*;
+import java.util.*;
+
+public class TestSHAClone {
+
+    private static final String[] ALGOS = {
+        "SHA", "SHA-256", "SHA-512", "SHA-384"
+    };
+
+    private static byte[] input1 = {
+        (byte)0x1, (byte)0x2,  (byte)0x3
+    };
+
+    private static byte[] input2 = {
+        (byte)0x4, (byte)0x5,  (byte)0x6
+    };
+
+    private MessageDigest md;
+
+    private TestSHAClone(String algo, Provider p) throws Exception {
+        md = MessageDigest.getInstance(algo, p);
+    }
+
+    private void run() throws Exception {
+        md.update(input1);
+        MessageDigest md2 = (MessageDigest) md.clone();
+        md.update(input2);
+        md2.update(input2);
+        if (!Arrays.equals(md.digest(), md2.digest())) {
+            throw new Exception(md.getAlgorithm() + ": comparison failed");
+        } else {
+            System.out.println(md.getAlgorithm() + ": passed");
+        }
+    }
+
+
+    public static void main(String[] argv) throws Exception {
+        Provider p = Security.getProvider("SUN");
+        for (int i=0; i<ALGOS.length; i++) {
+            TestSHAClone test = new TestSHAClone(ALGOS[i], p);
+            test.run();
+        }
+    }
+}