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EncryptionKey.java
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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.orc;
/**
* Information about a key used for column encryption in an ORC file.
* @since 1.6.0
*/
public interface EncryptionKey extends Comparable<EncryptionKey> {
/**
* The name of the key.
* @return the name
*/
String getKeyName();
/**
* The version of the key.
* @return the version, which for most KeyProviders start at 0.
*/
int getKeyVersion();
/**
* The encryption algorithm for this key.
* @return the encryption algorithm
*/
EncryptionAlgorithm getAlgorithm();
/**
* The columns that are encrypted with this key.
* @return the list of columns
*/
EncryptionVariant[] getEncryptionRoots();
/**
* Is the key available to this user?
* @return true if the key is available
*/
boolean isAvailable();
}