Policy to require Server side encrpytion on access to an s3 bucket.

sse_policy.json

{
	"Version": "2012-10-17",
	"Id": "Policy1469359009696",
	"Statement": [
		{
			"Sid": "Stmt1469359007124",
			"Effect": "Allow",
			"Principal": "*",
			"Action": "s3:*",
	    "Resource": "arn:aws:s3:::<BUCKET_NAME>/*",
			"Condition": {
				"StringEquals": {
					"s3:x-amz-server-side-encryption": "true"
				}
			}
		}
	]
}