org.jose4j.mac.MacUtil Maven / Gradle / Ivy
/*
* Copyright 2012-2017 Brian Campbell
*
* 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 org.jose4j.mac;
import org.jose4j.lang.JoseException;
import javax.crypto.Mac;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
/**
*/
public class MacUtil
{
public static final String HMAC_SHA256 = "HmacSHA256";
public static final String HMAC_SHA384 = "HmacSHA384";
public static final String HMAC_SHA512 = "HmacSHA512";
public static Mac getInitializedMac(String algorithm, Key key) throws JoseException
{
return getInitializedMac(algorithm, key, null);
}
public static Mac getInitializedMac(String algorithm, Key key, String provider) throws JoseException
{
Mac mac = getMac(algorithm, provider);
initMacWithKey(mac, key);
return /* of the */ mac;
}
public static Mac getMac(String algorithm) throws JoseException
{
return getMac(algorithm, null);
}
public static Mac getMac(String algorithm, String provider) throws JoseException
{
try
{
return provider == null ? Mac.getInstance(algorithm) : Mac.getInstance(algorithm, provider);
}
catch (NoSuchAlgorithmException e)
{
throw new JoseException("Unable to get a MAC implementation of algorithm name: " + algorithm, e);
}
catch (NoSuchProviderException e)
{
throw new JoseException("Unable to get a MAC implementation of algorithm name: " + algorithm + " using provider " + provider, e);
}
}
public static void initMacWithKey(Mac mac, Key key) throws org.jose4j.lang.InvalidKeyException
{
try
{
mac.init(key);
}
catch (InvalidKeyException e)
{
throw new org.jose4j.lang.InvalidKeyException("Key is not valid for " + mac.getAlgorithm() + " - " + e, e);
}
}
}