If you dump your 3DS cartridges using a compatible tool (like GodMode9 on a hacked 3DS), you can choose to remove the encryption during the dump process. The resulting .cci or .3ds file will run on Citra without any keys needed.
Nintendo 3DS game cartridges and digital downloads are encrypted using AES (Advanced Encryption Standard) to prevent unauthorized copying and execution. The Citra emulator, an open-source Nintendo 3DS emulator, requires these AES keys to decrypt and run legitimate game files – but only those you have legally dumped from your own physical cartridges or purchased digital copies.
The search term citra aes keystxt top often reflects confusion among new users about how to obtain and manage these keys. This guide will explain:
Citra looks for this file in specific folders depending on your operating system.
| OS | Path |
| :--- | :--- |
| Windows | C:\Users\YourUserName\AppData\Roaming\Citra\ |
| Linux | ~/.local/share/citra/ |
| macOS | ~/Library/Application Support/Citra/ |
| Portable (Windows) | The same folder as citra-qt.exe |
Tip: You can also place it in the
userfolder within the Citra directory if using a portable build.
If you have encrypted dumps (e.g., from a digital purchase), you must extract the unique keys from your own 3DS console using:
Citra supports using a keys.txt file to load your AES keys. This file contains all the necessary keys for decrypting games, including the AES key.
How to Use:
Apply and Save: Click OK to save your changes. citra aes keystxt top
Tips:
By following these steps and tips, you should be able to efficiently manage your AES key and other encryption keys within Citra using a keys.txt file. If you encounter issues, ensure your keys are up to date and correctly formatted.
aes_keys.txt is a critical configuration component for the Citra 3DS emulator
, used to decrypt and load retail games. While many users prefer working with already decrypted ROMs to avoid this setup, this file is essential for those who want to use their original encrypted game files or advanced features like Amiibo support. Purpose and Functionality
Citra requires specific cryptographic keys to unlock encrypted 3DS games and content. The aes_keys.txt
file acts as a central repository for these keys, allowing the emulator to: Decrypt Retail Games : Load and play files that are still encrypted. Install CIA Files
: Successfully install encrypted Digital Content (DLC) and updates. Enable System Features
: Support features like Mii sharing via QR codes, StreetPass, and BOSS (SpotPass) data. How to Obtain the File
Users are legally required to dump these keys from their own Nintendo 3DS hardware. They are protected by copyright and cannot be legally distributed online. Requirement : A 3DS console running custom firmware (CFW) with installed. Download a dedicated dumping script (e.g., dumpkeys.gm9 ) and place it in the /gm9/scripts folder on your console's SD card. Launch GodMode9 on the 3DS, run the script from the menu, and wait for it to finish. The generated aes_keys.txt will be located in the folder of your SD card. Installation and Directory Paths The file must be placed in the If you dump your 3DS cartridges using a
folder within the Citra user directory. This location varies significantly by operating system and platform:
The Ultimate Guide to Citra AES Keys: Fix "Encrypted" Game Errors
If you’ve finally downloaded that 3DS classic you’ve been dying to play, only to be met with a frustrating error about "encrypted" files, you’re not alone. The Citra emulator
requires a specific set of decryption keys—stored in a file called aes_keys.txt —to unlock and run most retail game dumps.
Here is everything you need to know about setting up your keys and getting your games running smoothly. What is aes_keys.txt?
Most 3DS games are encrypted to prevent unauthorized playback. While Citra is an incredible piece of software, it cannot legally include these proprietary Nintendo keys. The aes_keys.txt
file acts as a "keyring" that Citra uses to decrypt the game data in real-time as you play. How to Get Your AES Keys
The official and safest way to obtain these keys is by dumping them from your own physically owned 3DS console. The GodMode9 Method: GodMode9 script
on your homebrewed 3DS. This is the recommended "automatic" method as it dumps all necessary secrets for game decryption, Miis, and even Amiibo support. The Manual Method: Tip: You can also place it in the
If you already have the key strings, you can simply create a new text document, paste the keys inside, and save it exactly as aes_keys.txt Where to Place the aes_keys.txt File
Depending on your operating system, Citra looks for this file in a very specific subfolder called
. If that folder doesn't exist, you must create it manually. Operating System C:\Users\
. Windows often hides file extensions by default, which is a common pitfall. Outdated Keys:
If Citra still won't launch the game, your keys might be old. Re-dumping them from your 3DS with the latest scripts usually solves this. Alternative:
If you find the key process too technical, many users choose to use decrypted 3DS ROMs (often ending in ), which do not require an external key file to run. Ready to jump back into the world of 3DS? Make sure your folder is ready and your keys are in place!
Need help finding the right folder on your Steam Deck or Android?
Title: The Last Key
Logline: After a cryptic hard drive arrives at a retro-game preservation lab, a young cryptanalyst discovers that the master AES key for Citra (the 3DS emulator) is actually a fragment of a dead programmer’s digital confession—unlocking not just ROMs, but a conspiracy that killed its creator.
As of 2025, Citra (now part of the Azahar project following the original Citra takedown) continues to improve its key handling. Newer forks like Citra Canary and PabloMK7's Citra have added:
Despite this, no legitimate version of Citra will ever include or download proprietary keys for you. That responsibility remains with the user, legally.