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Nintendo 3DS emulators

723 bytes added, 16:40, 21 August 2020
Encryption
Formerly, decrypting those ROMs used to require real 3DS hardware (bafflingly enough, Citra devs still ask users to do this even nowadays). It required files generated by a real 3DS called '''xorpads''' unique to that game version, using the encryption engine within the 3DS. After this part, these xorpads (which are big) can be used with PC tools (or other 3DS-based homebrew) to produce the decrypted game image. After that, some 3DS homebrew (Decrypt9, GodMode9) included tools to directly convert encrypted images to decrypted images with a single button press, but those still require a real 3DS.
 
But now this new feature was added to citra enables the user to play encrypted games without decrypting them. Read this page
[https://citra-emu.org/wiki/aes-keys/]
 
Then, go to this reddit page and copy the code from second comment (credit floppydoppy2)
[https://www.reddit.com/r/CemuPiracy/comments/gpo2ey/aes_key_nintendo_3ds_title_keys_for_citra/] copy it ,make a new .TXT file names 'aes_keys.txt'
Then you might have that user folder for citra, then open it go to sysdata , assuming that you have a shaft font.bin file there paste this AES keys.txt there.
Now user folder is what is the system archive of 3ds you need it to display video
Now put user folder in folder of citra or in c: drive
For user folder:- [
The game changer was the sighax exploit, allowing to dump the 3DS bootrom which includes these encryption keys. This file can be downloaded from the [[Emulator Files#Nintendo 3DS|Emulator Files]] page. You can then use a program like '''[https://gbatemp.net/threads/tutorial-extract-decrypt-games-nand-backups-and-sd-contents-with-fuse-3ds.499994/ fuse-3ds]''' to decrypt games using this file. Simply place boot9.bin in the same folder, run the program, mount the encrypted .cia or .3ds, and find the '''decrypted.cxi''' file inside (usually in the first folder). Citra should be able to load this file without issues.
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