Aes Keystxt Portable [verified] — Citra

The "KeyTxt" part of the filename indicates that the file contains a collection of encryption keys in a text format. These keys are used by Citra to decrypt the game data, allowing the emulator to read and execute the game's instructions.

If you have searched for the term you are likely trying to achieve one of three things: decrypt your legally owned ROMs, run Citra directly from a USB drive without installation, or understand how cryptographic keys facilitate 3DS emulation. citra aes keystxt portable