Currently the SNS topics created by these templates are unencrypted. This PR adds optional encryption for the topics when a KMS key id is specified. This id can be the literal id, or something like alias/aws/sns. This is a non-breaking change. Existing CloudFormation stacks that are updated with this template will produce no changes unless the SNSTopicKMSKey parameter is explicitly specified.
Currently the SNS topics created by these templates are unencrypted. This PR adds optional encryption for the topics when a KMS key id is specified. This id can be the literal id, or something like
alias/aws/sns. This is a non-breaking change. Existing CloudFormation stacks that are updated with this template will produce no changes unless the SNSTopicKMSKey parameter is explicitly specified.