Advice on software for public key encryption of messages and files – Encryption Methods and Programs – BleepingComputer

I'm interested in running some software to allow me to encrypt messages or files (any arbitrary format) using public key cryptography. Specifically I need:

Something which can run on a linux PC, I have no smartphone at all to run apps, but also run on a variety of devices other people might be using. Running in a browser might be good for compatibility, so long as it wouldn't require an internet connection, just be a local html page with bits of javascript or what have you stored in a file on your machine which you could open up in the browser when you needed it.

It needs to be something which is not reliant on internet connectivity, something which one could choose to put one's encrypted messages into any format to send them, as an attachmenet to an email or even a CD disc through the post.

Source code must be open, and have been vetted by some group independent of the software's producers.

It needs to be relatively user friendly, I've heard that PGP/GPG is not, I mainly want something where you just feed it a file/text you wish to encrypt, tell it the public key of the receiver (pre-arranged somehow) and out comes and encryted copy to send to them. Or as the receiver you feed it the encrypted file, supply your private key and out comes a decrypted copy.

Can anyone recommend anything? Thanks

Edited by rp88, 04 June 2020 - 05:07 PM.

My systems:2 laptops, intel i3 processors, windows 8.1 installed on the hard-drive and linux mint 17.3 MATE installed to USB

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Advice on software for public key encryption of messages and files - Encryption Methods and Programs - BleepingComputer