--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/security/spec/EllipticCurveMatch.java	Wed May 04 20:38:45 2011 +0100
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 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.
+ *
+ * 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 6738532
+ * @summary Check EllipticCurve.equals() does not compare seed value of curve.
+ * @run main/othervm EllipticCurveMatch
+ * @author Mike StJohns
+ */
+
+import java.security.spec.*;
+import java.math.BigInteger;
+import java.security.SecureRandom;
+
+public class EllipticCurveMatch {
+    static String primeP256 =
+        "0FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF";
+    static String aP256 =
+        "0FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC";
+    static String bP256 =
+        "05AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B";
+    static String seedP256 =
+        "0C49D360886E704936A6678E1139D26B7819F7E90";
+
+    private static EllipticCurve addSeedToCurve(EllipticCurve curve)
+    {
+        SecureRandom rand = new SecureRandom();
+        byte[] seed = new byte[12];
+        rand.nextBytes(seed);
+
+        return new EllipticCurve (curve.getField(), curve.getA(), curve.getB(),
+            seed);
+    }
+
+    private static EllipticCurve getP256Curve()
+    {
+        ECFieldFp field = new ECFieldFp(new BigInteger (primeP256,16));
+        BigInteger a = new BigInteger (aP256, 16);
+        BigInteger b = new BigInteger (bP256, 16);
+
+        return new EllipticCurve (field, a, b);
+    }
+
+    public static void main (String[] argv) throws Exception {
+        EllipticCurve firstCurve = getP256Curve();
+        EllipticCurve secondCurve = addSeedToCurve(firstCurve);
+        EllipticCurve thirdCurve = addSeedToCurve(firstCurve);
+
+        if (!firstCurve.equals(firstCurve))
+            throw new Exception("Original curve doesn't equal itself");
+
+        if (!firstCurve.equals(secondCurve))
+            throw new Exception ("Original curve doesn't equal seeded curve");
+
+        if (!secondCurve.equals(secondCurve))
+            throw new Exception ("Seeded curve doesn't equal itself");
+
+        if (!secondCurve.equals(thirdCurve))
+            throw new Exception ("Seeded curve doesn't equal differently " +
+                "seeded curve");
+        System.out.println("Curve equals test passed");
+    }
+}