java.security.spec.MGF1ParameterSpec Maven / Gradle / Ivy
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* 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.
*
* Defined in the PKCS #1 v2.1
* 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;
}
}