- s/key/access_key_id/ - s/secret/secret_access_key/ - s/token/session_token/ so they are more aligned with the AWS document. for instance, in https://docs.aws.amazon.com/AmazonS3/latest/userguide/RESTAuthentication.html#ConstructingTheAuthenticationHeader AWSAccessKeyId is used in the "Authorization" header. this would help with the readability and maintainability. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>