In the present day, we’re launching Amazon S3 dual-layer server-side encryption with keys saved in AWS Key Administration Service (DSSE-KMS), a brand new encryption possibility in Amazon S3 that applies two layers of encryption to things when they’re uploaded to an Amazon Easy Storage Service (Amazon S3) bucket. DSSE-KMS is designed to satisfy Nationwide Safety Company CNSSP 15 for FIPS compliance and Knowledge-at-Relaxation Functionality Package deal (DAR CP) Model 5.0 steerage for 2 layers of CNSA encryption. Utilizing DSSE-KMS, you’ll be able to fulfill regulatory necessities to use a number of layers of encryption to your information.

Amazon S3 is the one cloud object storage service the place clients can apply two layers of encryption on the object degree and management the information keys used for each layers. DSSE-KMS makes it simpler for extremely regulated clients to satisfy rigorous safety requirements, resembling US Division of Protection (DoD) clients.

With DSSE-KMS, you’ll be able to specify dual-layer server-side encryption (DSSE) within the PUT or COPY request for an object or configure your S3 bucket to use DSSE to all new objects by default. You can even implement DSSE-KMS utilizing IAM and bucket insurance policies. Every layer of encryption makes use of a separate cryptographic implementation library with particular person information encryption keys. DSSE-KMS helps shield delicate information in opposition to the low likelihood of a vulnerability in a single layer of cryptographic implementation.

DSSE-KMS simplifies the method of making use of two layers of encryption to your information, with out having to put money into infrastructure required for client-side encryption. Every layer of encryption makes use of a distinct implementation of the 256-bit Superior Encryption Normal with Galois Counter Mode (AES-GCM) algorithm. DSSE-KMS makes use of the AWS Key Administration Service (AWS KMS) to generate information keys, permitting you to regulate your buyer managed keys by setting permissions per key and specifying key rotation schedules. With DSSE-KMS, now you can question and analyze your dual-encrypted information with AWS companies resembling Amazon Athena, Amazon SageMaker, and extra.

With this launch, Amazon S3 now gives 4 choices for server-side encryption:

1. Server-side encryption with Amazon S3 managed keys (SSE-S3)
2. Server-side encryption with AWS KMS (SSE-KMS)
3. Server-side encryption with customer-provided encryption keys (SSE-C)
4. Twin-layer server-side encryption with keys saved in KMS (DSSE-KMS)

Let’s see how DSSE-KMS works in apply.

Create an S3 Bucket and Activate DSSE-KMS
To create a brand new bucket within the Amazon S3 console, I select Buckets within the navigation pane. I select Create bucket, and I choose a novel and significant identify for the bucket. Beneath Default encryption part, I select DSSE-KMS because the encryption possibility. From the out there AWS KMS keys, I choose a key for my necessities. Lastly, I select Create bucket to finish the creation of the S3 bucket, encrypted by DSSE-KMS encryption settings.

Add an Object to the DSSE-SSE enabled S3 Bucket
Within the Buckets record, I select the identify of the bucket that I wish to add an object to. On the Objects tab for the bucket, I select Add. Beneath Information and folders, I select Add recordsdata. I then select a file to add, after which select Open. Beneath Server-side encryption, I select Don’t specify an encryption key. I then select Add.

As soon as the thing is uploaded to the S3 bucket, I discover that the uploaded object inherits the Server-side encryption settings from the bucket.

Obtain a DSSE-KMS Encrypted Object from an S3 Bucket
I choose the thing that I beforehand uploaded and select Obtain or select Obtain as from the Object actions menu. As soon as the thing is downloaded, I open it regionally, and the thing is decrypted mechanically, requiring no change to consumer purposes.

Now Accessible
Amazon S3 dual-layer server-side encryption with keys saved in AWS KMS (DSSE-KMS) is accessible in the present day in all AWS Areas. You will get began with DSSE-KMS by way of the AWS CLI or AWS Administration Console. To study extra about all out there encryption choices on Amazon S3, go to the Amazon S3 Consumer Information. For pricing info on DSSE-KMS, go to the Amazon S3 pricing web page (Storage tab) and the AWS KMS pricing web page.

— Irshad