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The Aliyun OSS SDK for Java used for accessing Aliyun Object Storage Service, includes all service and dependent JARs.

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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 com.aliyun.oss.crypto;

/**
 * EncryptionMaterials is an interface used to implement different
 * encrypt/decrypt content materials providers.
 */
public interface EncryptionMaterials {
    /**
     * Encrypt the cek and iv and put the result into the given {@link ContentCryptoMaterialRW} instance.
     * 
     * @param  contentMaterial 
     *              The materials that contans the content crypto info.
     */
    public void encryptCEK(ContentCryptoMaterialRW contentMaterial);

    /**
     * Decrypt the secured cek and secured iv and put the result into the given {@link ContentCryptoMaterialRW} 
     * instance
     * 
     * @param  contentMaterial 
     *              The materials that contans the content crypto info.
     */
    public void decryptCEK(ContentCryptoMaterialRW contentMaterial);
}