REPOST - but for the benefit of those that search and want a solution/suggestion:
What do you need to do? S3 can be used directly with "Web File" from both QlikView and Qlik Sense as long as the file is public.And with an obfuscated filename that should be pretty safe since you would use https to have a secure channel.... Using a Web File connection you can even read QVD-files from S3 - if you want.
If you use the Qlik REST connector you can even provide credentials via a header so the file does not need to be "public". Then you could read CSV, JSON and XML off of S3.
I was able to use Access Key and Secret Access Key to test connection using REST connector to connect with S3. But I don't see any bucket or objects that I can select. What format of URL should I specify?