A utility that decrypts Wii U NUS content to save space on compression, then re-encrypts the content with 1:1 output from the original NUS package
This tool is based on cdecrypt, but unlike cdecrypt, this tool doesn't extract the WUP package, it simply decrypts the content to optimize compression by other tools, like zip, rar, 7z, NTFS... while allowing you to re-encrypt it later and get exactly the same content that you had before it's decryption.
In my tests I could get a compression ratio between 60 ~ 75%, so, you will save some hard drive space with this tool to store your favorite games before Nintendo servers go away next month ...
Please, don't blindly trust 100% in this tool yet, I have tested this tool with 18 games so far, and all of them re-encrypted correctly, but we may have some edge cases in some packages, as I don't know if there is knowledge of every obscure feature that a NUS package may hide, so, it's a good idea to re-encrypt your game and check if the re-encrypted output and the original package are the same... you can use tools like HashCheck Shell Extension or any other tool to check for duplicate files ...
You can get this tool from it's release page on github: https://github.com/leonardothehuman/cafeKit/releases/tag/v0.1.1.72
EDIT: Seems like some people may get confuset with the intended usage of this tool, so, as @V10lator said:
This tool is based on cdecrypt, but unlike cdecrypt, this tool doesn't extract the WUP package, it simply decrypts the content to optimize compression by other tools, like zip, rar, 7z, NTFS... while allowing you to re-encrypt it later and get exactly the same content that you had before it's decryption.
In my tests I could get a compression ratio between 60 ~ 75%, so, you will save some hard drive space with this tool to store your favorite games before Nintendo servers go away next month ...
Please, don't blindly trust 100% in this tool yet, I have tested this tool with 18 games so far, and all of them re-encrypted correctly, but we may have some edge cases in some packages, as I don't know if there is knowledge of every obscure feature that a NUS package may hide, so, it's a good idea to re-encrypt your game and check if the re-encrypted output and the original package are the same... you can use tools like HashCheck Shell Extension or any other tool to check for duplicate files ...
You can get this tool from it's release page on github: https://github.com/leonardothehuman/cafeKit/releases/tag/v0.1.1.72
EDIT: Seems like some people may get confuset with the intended usage of this tool, so, as @V10lator said:
Yes, this is a tool to save space on your personal backups, since encrypted data can not be efficiently compressed, this tool decompresses it, when you want to install the game on your WiiU again, you just have to reencrypt it to get exactely what you had before.The way I understand it is that you do it this way:
- decrypt the content
- compress it with some 3rd party tool
- store the result
Then, when you want to play the game again:
- decompress the archive
- re-encrypt the content
- install the result
Last edited by leonardorg,