Naming encrypted files in the cloud, without leaking info about their content

I’m working on a photo sharing app that stores files in the cloud, encrypted, and lets you share those files with others. To do that, as suggested in answers to this previous question:

files are encrypted locally with a (random) symmetric… Continue reading Naming encrypted files in the cloud, without leaking info about their content

Looking for high security; cloud based; file share, with access / location logging, and fine grain access control [closed]

My boss is looking for an escrow style solution to store files that are "classified", or have special/high-security access requirements.
His requirement list for this solution:

Cloud-Based – Google Drive / Azure (open to other p… Continue reading Looking for high security; cloud based; file share, with access / location logging, and fine grain access control [closed]

File transfer service through server that is not P2P, encrypt files without letting the server know its contents

A file transfer tool, that works through a middle man server, as the following diagram:

Client A uploads a file to the server, Client B has websocket events that a file is transferring and starts downloading available chunks of the given … Continue reading File transfer service through server that is not P2P, encrypt files without letting the server know its contents

Sharing files with others, encrypted on untrustworthy file storage (e.g. the cloud)

I want to work on a photo-sharing tool, where I can:

store photos on untrustworthy disk space (like the cloud)
share photo albums with friends and family
update photo albums (rarely but happens)
share an existing album with additional peo… Continue reading Sharing files with others, encrypted on untrustworthy file storage (e.g. the cloud)

Not understanding why I should use public/private key encryption over password?

My knowledge about these topics is very elementary, please "school me" if I said something completely wrong, it would surely help me understand these things better. Now, to my issue.
Now that I have a laptop and didn’t encrypt th… Continue reading Not understanding why I should use public/private key encryption over password?

I want my customers to download the encrypted video file to a secured usb and play it directly in TV by providing unique key which i shared to them

How do I make sure that this content is not hacked by anyone ?
Do I encrypt every file and store the key before my customers download their unique copy?

Continue reading I want my customers to download the encrypted video file to a secured usb and play it directly in TV by providing unique key which i shared to them