com.amazonaws.services.elasticmapreduce.spi.security.EncryptionMaterialsProvider Maven / Gradle / Ivy

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The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright (c) 2016. Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 * http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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 com.amazonaws.services.elasticmapreduce.spi.security;

import java.util.Map;


/**
 * Interface for providing encryption materials.
 * Implementations are free to use any strategy for providing encryption materials,
 * such as simply providing static material that doesn't change,
 * or more complicated implementations, such as integrating with existing key management systems.
 */
public abstract class EncryptionMaterialsProvider {
  /**
   * Gets encryption materials by encryption context.
   * This is used when EMR fetches encryption materials to do encryption.
   * EMR will populate encryption context information at runtime to help users to determine
   * which encryption materials to return.
   * @param encryptionContext
   * @return EncryptionMaterials which caller can use to encrypt or decrypt data
   */
  public abstract EncryptionMaterials getEncryptionMaterials(EncryptionContext encryptionContext);

  /**
   * Gets encryption materials by material description.
   * This is used when EMR fetches encryption materials to do decryption.
   * The material description can be any information defined by users that uniquely identifies
   * a encryption material in user's system.
   * @param materialDescription
   * @return EncryptionMaterials which caller can use to encrypt or decrypt data
   */
  public abstract EncryptionMaterials getEncryptionMaterials(Map materialDescription);
}