| author | wetmore |
| Fri, 11 May 2018 15:53:12 -0700 | |
| branch | JDK-8145252-TLS13-branch |
| changeset 56542 | 56aaa6cb3693 |
| parent 47216 | 71c04702a3d5 |
| child 58242 | 94bb65cb37d3 |
| permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.security.spec; |
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import java.security.spec.AlgorithmParameterSpec; |
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/** |
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* This class specifies the set of parameters used with mask generation |
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* function MGF1 in OAEP Padding and RSASSA-PSS signature scheme, as |
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* defined in the |
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* <a href="https://tools.ietf.org/rfc/rfc8017.txt">PKCS#1 v2.2</a> standard. |
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* |
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* <p>Its ASN.1 definition in PKCS#1 standard is described below: |
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* <pre> |
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* PKCS1MGFAlgorithms ALGORITHM-IDENTIFIER ::= {
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* { OID id-mgf1 PARAMETERS HashAlgorithm },
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* ... -- Allows for future expansion -- |
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* } |
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* </pre> |
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* where |
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* <pre> |
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* HashAlgorithm ::= AlgorithmIdentifier {
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* {OAEP-PSSDigestAlgorithms}
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* } |
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* |
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* OAEP-PSSDigestAlgorithms ALGORITHM-IDENTIFIER ::= {
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* { OID id-sha1 PARAMETERS NULL }|
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* { OID id-sha224 PARAMETERS NULL }|
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* { OID id-sha256 PARAMETERS NULL }|
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* { OID id-sha384 PARAMETERS NULL }|
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* { OID id-sha512 PARAMETERS NULL }|
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* { OID id-sha512-224 PARAMETERS NULL }|
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* { OID id-sha512-256 PARAMETERS NULL },
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* ... -- Allows for future expansion -- |
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* } |
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* </pre> |
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* @see PSSParameterSpec |
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* @see javax.crypto.spec.OAEPParameterSpec |
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* |
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* @author Valerie Peng |
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* |
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* @since 1.5 |
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*/ |
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public class MGF1ParameterSpec implements AlgorithmParameterSpec {
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/** |
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* The MGF1ParameterSpec which uses "SHA-1" message digest |
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*/ |
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public static final MGF1ParameterSpec SHA1 = |
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new MGF1ParameterSpec("SHA-1");
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/** |
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* The MGF1ParameterSpec which uses "SHA-224" message digest |
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*/ |
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public static final MGF1ParameterSpec SHA224 = |
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new MGF1ParameterSpec("SHA-224");
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/** |
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* The MGF1ParameterSpec which uses "SHA-256" message digest |
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*/ |
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public static final MGF1ParameterSpec SHA256 = |
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new MGF1ParameterSpec("SHA-256");
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/** |
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* The MGF1ParameterSpec which uses "SHA-384" message digest |
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*/ |
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public static final MGF1ParameterSpec SHA384 = |
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new MGF1ParameterSpec("SHA-384");
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/** |
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* The MGF1ParameterSpec which uses SHA-512 message digest |
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*/ |
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public static final MGF1ParameterSpec SHA512 = |
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new MGF1ParameterSpec("SHA-512");
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/** |
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* The MGF1ParameterSpec which uses SHA-512/224 message digest |
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*/ |
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public static final MGF1ParameterSpec SHA512_224 = |
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new MGF1ParameterSpec("SHA-512/224");
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/** |
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* The MGF1ParameterSpec which uses SHA-512/256 message digest |
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*/ |
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public static final MGF1ParameterSpec SHA512_256 = |
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new MGF1ParameterSpec("SHA-512/256");
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private String mdName; |
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/** |
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* Constructs a parameter set for mask generation function MGF1 |
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* as defined in the PKCS #1 standard. |
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* |
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* @param mdName the algorithm name for the message digest |
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* used in this mask generation function MGF1. |
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18552
005e115dc6ee
8017326: Cleanup of the javadoc <code> tag in java.security.spec
juh
parents:
12685
diff
changeset
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* @exception NullPointerException if {@code mdName} is null.
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*/ |
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public MGF1ParameterSpec(String mdName) {
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if (mdName == null) {
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throw new NullPointerException("digest algorithm is null");
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} |
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this.mdName = mdName; |
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} |
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/** |
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* Returns the algorithm name of the message digest used by the mask |
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* generation function. |
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* |
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* @return the algorithm name of the message digest. |
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*/ |
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public String getDigestAlgorithm() {
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return mdName; |
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} |
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} |