[Rails] Paperclip - Amazon S3 - https

I am able to use Paperclip to save files to Amazon's S3 storage. Once
saved, the files are available using a URL associated with the bucket
and filename.

I have not been able to find a good tutorial which clearly explains
how to save a file to S3 (using Paperclip) whereby it can only be
retrieved using https, and only for a limited time period (which I
understand is a function of S3).

My specific need is to upload the file from one web page, while
allowing a user (who has logged into the site) to then (for a limited
amount of time) to access that page using https and a link on a page
served to that user.

Does anyone have good tutorial or example code which addresses this
issue?

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