<a href="http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;AmazonS3&#x2F;latest&#x2F;dev&#x2F;UsingEncryption.html" rel="nofollow">http:&#x2F;&#x2F;docs.aws.amazon.com&#x2F;AmazonS3&#x2F;latest&#x2F;dev&#x2F;UsingEncrypti...</a><p>It&#x27;s literally setting a policy on a bucket and a flag on object PUTs if you&#x27;re not managing the keys yourself.