To use encrypted 3DS games in , you need a file named aes_keys.txt containing the necessary decryption keys. These keys are proprietary to Nintendo, so it is recommended to dump them directly from your own hardware rather than downloading them from third-party sources. How to Obtain the Content
The official and safest way to generate the content for this file is by using GodMode9 on a hacked 3DS console: Run GodMode9: Launch GodMode9 on your 3DS.
Run Dump Script: Press the HOME button, select Scripts, and choose DumpKeys.
Locate the File: Once finished, a file named aes_keys.txt will be created on your SD card at sd:/gm9/aes_keys.txt.
Copy to Citra: Move this file from your SD card to the appropriate directory on your computer or mobile device. File Placement aes-keys.txt citra
Place your aes_keys.txt file in the sysdata folder of your Citra user directory. If the folder does not exist, you must create it manually. Typical Path Windows C:\Users\ Android Internal Storage/citra-emu/sysdata/ Linux/Steam Deck ~/.var/app/org.citra_emu.citra/data/citra-emu/sysdata/ macOS ~/Library/Application Support/Citra/sysdata/ Alternative: Using Decrypted ROMs
If you cannot dump the keys, you can avoid the need for aes_keys.txt entirely by using decrypted ROMs. Most 3DS emulators, including Citra, can run decrypted .3ds or .cia files without requiring additional system keys.
Sharing console cryptographic keys is a violation of the Digital Millennium Copyright Act (DMCA) in the US and similar laws worldwide. While emulators are legal, distributing copyrighted keys is not. Downloading them puts you on legally shaky ground.
The search for aes-keys.txt citra is a rite of passage for every 3DS emulation enthusiast. While it is tempting to grab a pre-made file from a random forum, the only safe, legal, and future-proof method is to dump the keys from your own Nintendo 3DS. To use encrypted 3DS games in , you
Not only does this protect you from malware and legal issues, but it also ensures you have the complete key set for every game you legitimately own. The extra 15 minutes it takes to hack your 3DS and run GodMode9 will save you hours of troubleshooting corrupted downloads or wrestling with outdated key files.
Remember: Emulation is about preservation and enhancing your owned games. By taking the time to dump your own aes-keys.txt, you are respecting that principle and keeping the hobby alive for years to come.
Disclaimer: This article is for educational purposes only. The author does not condone piracy. Always dump your own system files from hardware you own. Laws regarding emulation and key extraction vary by country; consult local regulations.
Unlike console emulators of older systems (like NES or Game Boy Advance), the Nintendo 3DS was built with robust security. Here is why the file is mandatory: Disclaimer: This article is for educational purposes only
aes-keys.txt allows Citra to read and write save data correctly.In short: No aes-keys.txt = No gameplay.
In March 2024, the original Citra team (alongside Yuzu) settled a lawsuit with Nintendo and shut down. However, forks of Citra (like PabloMK7’s Citra and Lime3DS) continue development. These forks still require aes-keys.txt exactly as before.
The shutdown has led to even more fake "Citra download" sites bundling malware with fake key files. Always get your emulator from official GitHub repositories of active forks, and always dump your own keys.
Technically, it may work, but it is legally dubious. More importantly, sharing keys ties you to their console’s unique key layout. If they later dump DLC or updates, it may mismatch. Dump your own.