Managing Secrets for Amazon EC2 Container Service–Based Applications

s3-policy.json

{
    "Version": "2012-10-17",
    "Id": "PutObjPolicy",
    "Statement": [
        {
            "Sid": "DenyUnEncryptedObjectUploads",
            "Effect": "Deny",
            "Principal": "*",
            "Action": "s3:PutObject",
            "Resource": "arn:aws:s3:::oms-services.secrets/*",
            "Condition": {
                "StringNotEquals": {
                    "s3:x-amz-server-side-encryption-aws-kms-key-id": "arn:aws:kms:ap-southeast-1:xxx:key/yyy",
                    "s3:x-amz-server-side-encryption": "aws:kms"
                }
            }
        }
    ]
}