Today, we are launching preview of the AWS Database Encryption SDK, an upgrade to the existing Amazon DynamoDB Encryption Client, which enables you to include client-side encryption in your DynamoDB workloads. With this launch, you can more easily perform attribute-level encryption, enabling you to encrypt specific attribute values before storing them in your DynamoDB table. This lets you protect sensitive data in-transit and at-rest, as data cannot be exposed unless decrypted by your application. This new release also lets you easily search on encrypted attributes without decrypting the entire database beforehand. This lets you find the right information quickly to download to your application while your data remains securely encrypted within the database.
Source:: Amazon AWS