| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package java.security.spec; |
| |
| /** |
| * The parameter specification for the Mask Generation Function (MGF1) in |
| * the RSA-PSS Signature and OAEP Padding scheme. |
| * <p> |
| * Defined in the <a |
| * href="http://www.rsa.com/rsalabs/pubs/PKCS/html/pkcs-1.html">PKCS #1 v2.1</a> |
| * standard |
| */ |
| public class MGF1ParameterSpec implements AlgorithmParameterSpec { |
| |
| /** |
| * The predefined MGF1 parameter specification with an "SHA-1" message |
| * digest. |
| */ |
| public static final MGF1ParameterSpec SHA1 = |
| new MGF1ParameterSpec("SHA-1"); |
| |
| /** |
| * The predefined MGF1 parameter specification with an "SHA-256" message |
| * digest. |
| */ |
| public static final MGF1ParameterSpec SHA256 = |
| new MGF1ParameterSpec("SHA-256"); |
| |
| /** |
| * The predefined MGF1 parameter specification with an "SHA-384" message |
| * digest. |
| */ |
| public static final MGF1ParameterSpec SHA384 = |
| new MGF1ParameterSpec("SHA-384"); |
| |
| /** |
| * The predefined MGF1 parameter specification with an "SHA-512" message |
| * digest. |
| */ |
| public static final MGF1ParameterSpec SHA512 = |
| new MGF1ParameterSpec("SHA-512"); |
| |
| // Message digest algorithm name |
| private final String mdName; |
| |
| /** |
| * Creates a new {@code MGF1ParameterSpec} with the specified message digest |
| * algorithm name. |
| * |
| * @param mdName |
| * the name of the message digest algorithm. |
| */ |
| public MGF1ParameterSpec(String mdName) { |
| this.mdName = mdName; |
| if (this.mdName == null) { |
| throw new NullPointerException("mdName == null"); |
| } |
| } |
| |
| /** |
| * Returns the name of the message digest algorithm. |
| * |
| * @return the name of the message digest algorithm. |
| */ |
| public String getDigestAlgorithm() { |
| return mdName; |
| } |
| } |