hadoop OpensslAesCtrCryptoCodec 源码
haddop OpensslAesCtrCryptoCodec 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/OpensslAesCtrCryptoCodec.java
/**
* 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.hadoop.crypto;
import org.apache.hadoop.classification.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.security.GeneralSecurityException;
/**
* Implement the AES-CTR crypto codec using JNI into OpenSSL.
*/
@InterfaceAudience.Private
public class OpensslAesCtrCryptoCodec extends OpensslCtrCryptoCodec {
private static final Logger LOG =
LoggerFactory.getLogger(OpensslAesCtrCryptoCodec.class.getName());
public OpensslAesCtrCryptoCodec() {
String loadingFailureReason = OpensslCipher.getLoadingFailureReason();
if (loadingFailureReason != null) {
throw new RuntimeException(loadingFailureReason);
}
}
@Override
public Logger getLogger() {
return LOG;
}
@Override
public CipherSuite getCipherSuite() {
return CipherSuite.AES_CTR_NOPADDING;
}
@Override
public void calculateIV(byte[] initIV, long counter, byte[] iv) {
super.calculateIV(initIV, counter, iv,
getCipherSuite().getAlgorithmBlockSize());
}
@Override
public Encryptor createEncryptor() throws GeneralSecurityException {
return new OpensslCtrCipher(OpensslCipher.ENCRYPT_MODE,
getCipherSuite());
}
@Override
public Decryptor createDecryptor() throws GeneralSecurityException {
return new OpensslCtrCipher(OpensslCipher.DECRYPT_MODE,
getCipherSuite());
}
}
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