1 /* 2 * Copyright (c) 1998, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.security.spec; 27 28 import java.math.BigInteger; 29 30 /** 31 * This class specifies an RSA public key. 32 * 33 * @author Jan Luehe 34 * 35 * 36 * @see java.security.Key 37 * @see java.security.KeyFactory 38 * @see KeySpec 39 * @see X509EncodedKeySpec 40 * @see RSAPrivateKeySpec 41 * @see RSAPrivateCrtKeySpec 42 */ 43 44 public class RSAPublicKeySpec implements KeySpec { 45 46 private final BigInteger modulus; 47 private final BigInteger publicExponent; 48 private final AlgorithmParameterSpec params; 49 50 /** 51 * Creates a new RSAPublicKeySpec. 52 * 53 * @param modulus the modulus 54 * @param publicExponent the public exponent 55 */ RSAPublicKeySpec(BigInteger modulus, BigInteger publicExponent)56 public RSAPublicKeySpec(BigInteger modulus, BigInteger publicExponent) { 57 this(modulus, publicExponent, null); 58 } 59 60 /** 61 * Creates a new RSAPublicKeySpec with additional key parameters. 62 * 63 * @param modulus the modulus 64 * @param publicExponent the public exponent 65 * @param params the parameters associated with this key, may be null 66 * @since 8 67 */ RSAPublicKeySpec(BigInteger modulus, BigInteger publicExponent, AlgorithmParameterSpec params)68 public RSAPublicKeySpec(BigInteger modulus, BigInteger publicExponent, 69 AlgorithmParameterSpec params) { 70 this.modulus = modulus; 71 this.publicExponent = publicExponent; 72 this.params = params; 73 } 74 75 76 /** 77 * Returns the modulus. 78 * 79 * @return the modulus 80 */ getModulus()81 public BigInteger getModulus() { 82 return this.modulus; 83 } 84 85 /** 86 * Returns the public exponent. 87 * 88 * @return the public exponent 89 */ getPublicExponent()90 public BigInteger getPublicExponent() { 91 return this.publicExponent; 92 } 93 94 /** 95 * Returns the parameters associated with this key, may be null if not 96 * present. 97 * 98 * @return the parameters associated with this key 99 * @since 8 100 */ getParams()101 public AlgorithmParameterSpec getParams() { 102 return this.params; 103 } 104 105 } 106