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Java library for Javascript Object Signing and Encryption (JOSE) and
JSON Web Tokens (JWT)
/*
* nimbus-jose-jwt
*
* Copyright 2012-2016, Connect2id Ltd and contributors.
*
* Licensed 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 com.nimbusds.jose.crypto.impl;
import java.security.NoSuchAlgorithmException;
import java.security.Provider;
import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import net.jcip.annotations.ThreadSafe;
/**
* Helper utilities for instantiating ciphers.
*
* @author Cedric Staub
* @version 2014-01-22
*/
@ThreadSafe
public class CipherHelper {
/**
* Instantiates a cipher with an (optional) JCA provider.
*
* @param name The name of the cipher. Must not be {@code null}.
* @param provider The JCA provider, {@code null} to use the default.
*
* @return The cipher.
*
* @throws NoSuchAlgorithmException On unsupported algorithm.
* @throws NoSuchPaddingException On unsupported padding.
*/
public static Cipher getInstance(String name, Provider provider)
throws NoSuchAlgorithmException, NoSuchPaddingException {
if (provider == null) {
return Cipher.getInstance(name);
} else {
return Cipher.getInstance(name, provider);
}
}
}
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