SigV4
A SigV4 authentication plugin for the open-source DataStax Java Driver
... AWSCredentialsProvider to obtain credentials. Because the IAuthenticator interface operates at the level of InetSocketAddress, you must specify the service endpoint to use for the connection. You can provide the Region in the constructor programmatically, via the AWS_REGION environment variable, or via the aws.region system property. Use the authentication plugin for the open-source DataStax Java Driver for Cassandra to access Amazon Keyspaces.