KDE plasma. From my experience it uses less resources than lxqt and xfce and works out of the box while lxqt and xfce required extra work to get wifi, screen brightness controls and audio working. I can have 10+ tabs in a chromium based browser open without lag on an old laptop with 2GB ram and 1.33 - 1.83GHz 4 core intel atom from 10 years ago.

Install KDE.

A gui app that lets you:

• symmetrically encrypt and decrypt text and files with AES-256 and without any weird formating that would make it incompatible with openssl.
• generate (without writing to file) RSA-(2048-4096) keys and asymmetrically encrypt, decrypt, sign and verify text and files.

It should be simple without any advanced options or storing any data or credentials or saving anything without asking the user. For example;

For symmetric text:

• 3 text boxes, 1 for input, 1 for output, 1 for password, encrypt/decrypt radio, 1 button.

For symmetric file:

• file picker, 1 password text box, encrypt/decrypt radio, 1 button

For asymmetric generation:

• 2 text boxes, 1 for priv key, 1 for pub key, 1 button.

For asymmetric text:

• 3 text boxes, 1 for input, 1 for output, 1 for priv/pub key, encrypt/decrypt/sign/verify radio, 1 button

For asymmetric file:

• file picker, 1 priv/pub key text box, encrypt/decrypt/sign/verify radio, 1 button

Is there any benefit to it over nostr though? You’d have to link your public key to your account(s) and store a backup of your private key in addition to your regular login/password just to get a more fragmented and less seamless version of nostr. A lot of people already have issues figuring out how fediverse works with multiple instances and all… now they’d have multiple accounts with different credentials to keep track of on top of a meta login/password (pub/priv key). With nostr you only have 1 login/password (pub/priv key) to everything, it’s just long and you can’t change it. At least I think that’s how it works, I don’t really use twitter/nostr/mastodon type of sites.

So nostr?