--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/security/spec/XECPublicKeySpec.java	Tue May 08 09:47:28 2018 -0400
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2018, 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.spec;
+
+import java.math.BigInteger;
+import java.util.Objects;
+
+/**
+ * A class representing elliptic curve public keys as defined in RFC 7748,
+ * including the curve and other algorithm parameters. The public key is a
+ * particular point on the curve, which is represented using only its
+ * u-coordinate. A u-coordinate is an element of the field of integers modulo
+ * some value that is determined by the algorithm parameters. This field
+ * element is represented by a BigInteger which may hold any value. That is,
+ * the BigInteger is not restricted to the range of canonical field elements.
+ *
+ * @since 11
+ */
+public class XECPublicKeySpec implements KeySpec {
+
+    private final AlgorithmParameterSpec params;
+    private final BigInteger u;
+
+    /**
+     * Construct a public key spec using the supplied parameters and
+     * u coordinate.
+     *
+     * @param params the algorithm parameters
+     * @param u the u-coordinate of the point, represented using a BigInteger
+     *          which may hold any value
+     *
+     * @throws NullPointerException if {@code params} or {@code u}
+     *                              is null.
+     */
+    public XECPublicKeySpec(AlgorithmParameterSpec params, BigInteger u) {
+        Objects.requireNonNull(params, "params must not be null");
+        Objects.requireNonNull(u, "u must not be null");
+
+        this.params = params;
+        this.u = u;
+    }
+
+    /**
+     * Get the algorithm parameters that define the curve and other settings.
+     *
+     * @return the parameters
+     */
+    public AlgorithmParameterSpec getParams() {
+        return params;
+    }
+
+    /**
+     * Get the u coordinate of the point.
+     *
+     * @return the u-coordinate, represented using a BigInteger which may hold
+     *          any value
+     */
+    public BigInteger getU() {
+        return u;
+    }
+}