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/*
 * Copyright 2011-2016 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.s3.internal.crypto;

import javax.crypto.SecretKey;

/**
 * State information for an in-progress, encrypted multipart upload, including
 * the envelope encryption key used to encrypt each individual part in a
 * multipart upload, and the next initialization vector (IV) for the next part
 * to encrypt.
 */
public class EncryptedUploadContext extends MultipartUploadContext {
    private final SecretKey envelopeEncryptionKey;
    private byte[] firstIV;
    private byte[] nextIV;

    public EncryptedUploadContext(String bucketName, String key,
            SecretKey envelopeEncryptionKey) {
        super(bucketName, key);
        this.envelopeEncryptionKey = envelopeEncryptionKey;
    }

    public SecretKey getEnvelopeEncryptionKey() {
        return envelopeEncryptionKey;
    }

    public void setNextInitializationVector(byte[] nextIV) {
        this.nextIV = nextIV;
    }

    public byte[] getNextInitializationVector() {
        return nextIV;
    }

    public void setFirstInitializationVector(byte[] firstIV) {
        this.firstIV = firstIV;
    }

    public byte[] getFirstInitializationVector() {
        return firstIV;
    }
}