--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/java/security/spec/RSAKeyGenParameterSpec.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 1999, 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.spec;
+
+import java.math.BigInteger;
+import java.security.spec.AlgorithmParameterSpec;
+
+/**
+ * This class specifies the set of parameters used to generate an RSA
+ * key pair.
+ *
+ * @author Jan Luehe
+ *
+ * @see java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
+ *
+ * @since 1.3
+ */
+
+public class RSAKeyGenParameterSpec implements AlgorithmParameterSpec {
+
+    private int keysize;
+    private BigInteger publicExponent;
+
+    /**
+     * The public-exponent value F0 = 3.
+     */
+    public static final BigInteger F0 = BigInteger.valueOf(3);
+
+    /**
+     * The public exponent-value F4 = 65537.
+     */
+    public static final BigInteger F4 = BigInteger.valueOf(65537);
+
+    /**
+     * Constructs a new {@code RSAParameterSpec} object from the
+     * given keysize and public-exponent value.
+     *
+     * @param keysize the modulus size (specified in number of bits)
+     * @param publicExponent the public exponent
+     */
+    public RSAKeyGenParameterSpec(int keysize, BigInteger publicExponent) {
+        this.keysize = keysize;
+        this.publicExponent = publicExponent;
+    }
+
+    /**
+     * Returns the keysize.
+     *
+     * @return the keysize.
+     */
+    public int getKeysize() {
+        return keysize;
+    }
+
+    /**
+     * Returns the public-exponent value.
+     *
+     * @return the public-exponent value.
+     */
+    public BigInteger getPublicExponent() {
+        return publicExponent;
+    }
+}