org.apache.parquet.crypto.ModuleCipherFactory 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 org.apache.parquet.crypto;
import org.apache.parquet.format.BlockCipher;
public class ModuleCipherFactory {
// Parquet Module types
public enum ModuleType {
Footer((byte)0),
ColumnMetaData((byte)1),
DataPage((byte)2),
DictionaryPage((byte)3),
DataPageHeader((byte)4),
DictionaryPageHeader((byte)5),
ColumnIndex((byte)6),
OffsetIndex((byte)7),
BloomFilterHeader((byte)8),
BloomFilterBitset((byte)9);
private final byte value;
private ModuleType(byte value) {
this.value = value;
}
public byte getValue() {
return value;
}
}
public static final int SIZE_LENGTH = 4;
public static BlockCipher.Encryptor getEncryptor(AesMode mode, byte[] keyBytes) {
switch (mode) {
case GCM:
return new AesGcmEncryptor(keyBytes);
case CTR:
return new AesCtrEncryptor(keyBytes);
default:
throw new IllegalArgumentException("AesMode not supported in ModuleCipherFactory: " + mode);
}
}
public static BlockCipher.Decryptor getDecryptor(AesMode mode, byte[] keyBytes) {
switch (mode) {
case GCM:
return new AesGcmDecryptor(keyBytes);
case CTR:
return new AesCtrDecryptor(keyBytes);
default:
throw new IllegalArgumentException("AesMode not supported in ModuleCipherFactory: " + mode);
}
}
}