**To enable data stream encryption** The following ``start-stream-encryption`` example enables server-side encryption for the specified stream, using the specified AWS KMS key. :: aws kinesis start-stream-encryption \ --encryption-type KMS \ --key-id arn:aws:kms:us-west-2:012345678912:key/a3c4a7cd-728b-45dd-b334-4d3eb496e452 \ --stream-name samplestream This command produces no output. For more information, see `Data Protection in Amazon Kinesis Data Streams <https://docs.aws.amazon.com/streams/latest/dev/server-side-encryption.html>`__ in the *Amazon Kinesis Data Streams Developer Guide*.