bucket Encryption
Specifies default encryption for a bucket using server-side encryption with Amazon S3 managed keys (SSE-S3) or AWS KMS keys (SSE-KMS). For information about default encryption for directory buckets, see Setting and monitoring default encryption for directory buckets in the Amazon S3 User Guide . Search the CloudFormation User Guide for AWS::S3Express::DirectoryBucket
for more information about the expected schema for this property.