Setting Up an AWS S3 Bucket with Server-Side Encryption Configuration

Introduction

This guide provides a step-by-step approach to setting up an AWS S3 bucket with server-side encryption using Pulumi. The purpose of this setup is to ensure that data stored in the S3 bucket is encrypted, providing enhanced security for your data at rest. By the end of this guide, you will learn how to create an S3 bucket and configure it to use server-side encryption with AWS Key Management Service (KMS) or AES-256.

Step-by-Step Process

1. AWS S3 Bucket Creation:

   • Use the aws_s3_bucket resource to create an S3 bucket. This bucket will serve as the storage location for your objects.

2. Configure Server-Side Encryption:

   • Implement server-side encryption by defining an aws_s3_bucket_server_side_encryption_configuration resource. This configuration will specify the encryption settings you want to apply to the bucket, using either AWS KMS-managed keys (SSE-KMS) or AES-256 encryption.

3. Export Stack Outputs:

   • To facilitate easy reference, export the bucket’s name and Amazon Resource Name (ARN). This can be useful for future operations or integrations with other AWS services.

Example Program

Below is an example of how to create an S3 bucket with server-side encryption using Pulumi and TypeScript. The example utilizes AWS KMS-managed keys (SSE-KMS) for encryption.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// Create an S3 bucket
const myBucket = new aws.s3.BucketV2("my_bucket", {
    bucket: "my-secure-bucket-unique-name",
    acl: "private",
    versionings: [{
        enabled: true,
    }],
});
// Set up server-side encryption configuration for the S3 bucket
const myBucketSse = new aws.s3.BucketServerSideEncryptionConfigurationV2("my_bucket_sse", {
    bucket: myBucket.bucket,
    rules: [{
        applyServerSideEncryptionByDefault: {
            sseAlgorithm: "aws:kms",
            kmsMasterKeyId: "alias/aws/s3",
        },
    }],
});
export const bucketName = myBucket.bucket;
export const bucketArn = myBucket.arn;

Summary

In this guide, we successfully created an AWS S3 bucket and configured it to use server-side encryption with an AWS KMS key. The bucket was set up with a private ACL and versioning was enabled to keep track of changes to objects. The encryption rule ensures that all objects stored in the bucket are encrypted using the specified KMS key. Finally, we exported the bucket name and ARN for future reference, completing the setup process.