Java tutorial
/* * Copyright (c) 1999, 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.interfaces; import java.math.BigInteger; import java.security.spec.AlgorithmParameterSpec; /** * The interface to a public or private key in * <a href="https://tools.ietf.org/rfc/rfc8017.txt">PKCS#1 v2.2</a> standard, * such as those for RSA, or RSASSA-PSS algorithms. * * @author Jan Luehe * * @see RSAPublicKey * @see RSAPrivateKey * * @since 1.3 */ public interface RSAKey { /** * Returns the modulus. * * @return the modulus */ public BigInteger getModulus(); /** * Returns the parameters associated with this key. * The parameters are optional and may be either * explicitly specified or implicitly created during * key pair generation. * * @implSpec * The default implementation returns {@code null}. * * @return the associated parameters, may be null * @since 11 */ default AlgorithmParameterSpec getParams() { return null; } }