When you enable client-side encryption for Amazon Redshift sources, Amazon Redshift unloads the data in encrypted format, and then pushes the data to the Secure Agent. The Secure Agent writes the data to the target based on the task or mapping logic.

To enable client-side encryption, you must provide a master symmetric key in the connection properties and select the

Turn on S3 Client Side Encryption

option in the advanced target properties.

The Secure Agent encrypts the data by using the master symmetric key. The master symmetric key is a 256-bit AES encryption key in the Base64 format. Amazon Redshift Connector uploads the data to the Amazon S3 server by using the master symmetric key and then loads the data by using the copy command with the Encrypted option and a private encryption key for additional security.