Showing the changes to java/pkg/javax/crypto/spec/PSource.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 2003, 2007, 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 javax.crypto.spec; | |
| 27 | + | |
| 28 | +import java.math.BigInteger; | |
| 29 | +import java.security.spec.AlgorithmParameterSpec; | |
| 30 | + | |
| 31 | +/** | |
| 32 | + * This class specifies the source for encoding input P in OAEP Padding, | |
| 33 | + * as defined in the | |
| 34 | + * <a href="http://www.ietf.org/rfc/rfc3447.txt">PKCS #1</a> | |
| 35 | + * standard. | |
| 36 | + * <pre> | |
| 37 | + * PKCS1PSourceAlgorithms ALGORITHM-IDENTIFIER ::= { | |
| 38 | + * { OID id-pSpecified PARAMETERS OCTET STRING }, | |
| 39 | + * ... -- Allows for future expansion -- | |
| 40 | + * } | |
| 41 | + * </pre> | |
| 42 | + * @author Valerie Peng | |
| 43 | + * | |
| 44 | + * @since 1.5 | |
| 45 | + */ | |
| 46 | +public class PSource { | |
| 47 | + | |
| 48 | + private String pSrcName; | |
| 49 | + | |
| 50 | + /** | |
| 51 | + * Constructs a source of the encoding input P for OAEP | |
| 52 | + * padding as defined in the PKCS #1 standard using the | |
| 53 | + * specified PSource algorithm. | |
| 54 | + * @param pSrcName the algorithm for the source of the | |
| 55 | + * encoding input P. | |
| 56 | + * @exception NullPointerException if <code>pSrcName</code> | |
| 57 | + * is null. | |
| 58 | + */ | |
| 59 | + protected PSource(String pSrcName) { | |
| 60 | + if (pSrcName == null) { | |
| 61 | + throw new NullPointerException("pSource algorithm is null"); | |
| 62 | + } | |
| 63 | + this.pSrcName = pSrcName; | |
| 64 | + } | |
| 65 | + /** | |
| 66 | + * Returns the PSource algorithm name. | |
| 67 | + * | |
| 68 | + * @return the PSource algorithm name. | |
| 69 | + */ | |
| 70 | + public String getAlgorithm() { | |
| 71 | + return pSrcName; | |
| 72 | + } | |
| 73 | + | |
| 74 | + /** | |
| 75 | + * This class is used to explicitly specify the value for | |
| 76 | + * encoding input P in OAEP Padding. | |
| 77 | + * | |
| 78 | + * @since 1.5 | |
| 79 | + */ | |
| 80 | + public static final class PSpecified extends PSource { | |
| 81 | + | |
| 82 | + private byte[] p = new byte[0]; | |
| 83 | + | |
| 84 | + /** | |
| 85 | + * The encoding input P whose value equals byte[0]. | |
| 86 | + */ | |
| 87 | + public static final PSpecified DEFAULT = new PSpecified(new byte[0]); | |
| 88 | + | |
| 89 | + /** | |
| 90 | + * Constructs the source explicitly with the specified | |
| 91 | + * value <code>p</code> as the encoding input P. | |
| 92 | + * Note: | |
| 93 | + * @param p the value of the encoding input. The contents | |
| 94 | + * of the array are copied to protect against subsequent | |
| 95 | + * modification. | |
| 96 | + * @exception NullPointerException if <code>p</code> is null. | |
| 97 | + */ | |
| 98 | + public PSpecified(byte[] p) { | |
| 99 | + super("PSpecified"); | |
| 100 | + this.p = (byte[]) p.clone(); | |
| 101 | + } | |
| 102 | + /** | |
| 103 | + * Returns the value of encoding input P. | |
| 104 | + * @return the value of encoding input P. A new array is | |
| 105 | + * returned each time this method is called. | |
| 106 | + */ | |
| 107 | + public byte[] getValue() { | |
| 108 | + return (p.length==0? p: (byte[])p.clone()); | |
| 109 | + } | |
| 110 | + } | |
| 111 | +} | |