/**
* 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 org.apache.cxf.rs.security.jose.jwe;
import javax.crypto.SecretKey;
import org.apache.cxf.rs.security.jose.jwa.AlgorithmUtils;
import org.apache.cxf.rs.security.jose.jwa.ContentAlgorithm;
import org.apache.cxf.rt.security.crypto.CryptoUtils;
public class AesGcmContentEncryptionAlgorithm extends AbstractContentEncryptionAlgorithm {
private static final int DEFAULT_IV_SIZE = 96;
public AesGcmContentEncryptionAlgorithm(ContentAlgorithm algo) {
this(algo, false);
}
public AesGcmContentEncryptionAlgorithm(ContentAlgorithm algo, boolean generateCekOnce) {
super(checkAlgorithm(algo), generateCekOnce);
}
public AesGcmContentEncryptionAlgorithm(String encodedCek, String encodedIv, ContentAlgorithm algo) {
this((byte[])CryptoUtils.decodeSequence(encodedCek), CryptoUtils.decodeSequence(encodedIv), algo);
}
public AesGcmContentEncryptionAlgorithm(String encodedCek, ContentAlgorithm algo) {
this((byte[])CryptoUtils.decodeSequence(encodedCek), null, algo);
}
public AesGcmContentEncryptionAlgorithm(SecretKey key, ContentAlgorithm algo) {
this(key, (byte[])null, algo);
}
public AesGcmContentEncryptionAlgorithm(SecretKey key, byte[] iv, ContentAlgorithm algo) {
this(key.getEncoded(), iv, algo);
}
public AesGcmContentEncryptionAlgorithm(byte[] cek, ContentAlgorithm algo) {
this(cek, (byte[])null, algo);
}
public AesGcmContentEncryptionAlgorithm(byte[] cek, byte[] iv, ContentAlgorithm algo) {
super(cek, iv, checkAlgorithm(algo));
}
protected int getIvSize() {
return DEFAULT_IV_SIZE;
}
private static ContentAlgorithm checkAlgorithm(ContentAlgorithm algo) {
if (AlgorithmUtils.isAesGcm(algo.getJwaName())) {
return algo;
}
LOG.warning("Invalid content encryption algorithm");
throw new JweException(JweException.Error.INVALID_CONTENT_ALGORITHM);
}
}