src/java.base/share/classes/java/security/interfaces/RSAPublicKey.java

/*
 * Copyright (c) 1998, 2024, 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.interfaces;

import java.math.BigInteger;
import java.security.spec.AlgorithmParameterSpec;

/**
 * The interface to an RSA public key.
 *
 * @author Jan Luehe
 * @since 1.2
 *
 */

public interface RSAPublicKey extends java.security.PublicKey, RSAKey
{
    /**
     * The type fingerprint that is set to indicate
     * serialization compatibility with a previous
     * version of the type.
     *
     * @deprecated A {@code serialVersionUID} field in an interface is
     * ineffectual. Do not use; no replacement.
     */
    @Deprecated
    @java.io.Serial
    long serialVersionUID = -8727434096241101194L;

    /**
     * Returns the public exponent.
     *
     * @return the public exponent
     */
    BigInteger getPublicExponent();

    /**
     * {@inheritDoc java.security.AsymmetricKey}
     *
     * @implSpec
     * The default implementation returns {@code null}.
     *
     * @return {@inheritDoc java.security.AsymmetricKey}
     * @since 11
     */
    @Override
    default AlgorithmParameterSpec getParams() {
        return null;
    }
}