You're on your own for the keys.

This script now pulls title metadata (like the title's name and region) directly off the CDN by using the following certs to connect.

Requires makerom, ctr-common-1.crt (mirror), and ctr-common-1.key (mirror) to be in the directory

Usage: <TitleID TitleKey [-redown -redec -no3ds -nocia] or [-check]> or [-deckey] or [-checkbin]
-deckey : print keys from decTitleKeys.bin
-check : checks if title id matches key
-checkbin : checks titlekeys from decTitleKeys.bin
-redown : redownload content
-nodown : don't download content, just print links
-redec : re-attempt content decryption
-no3ds : don't build 3DS file
-nocia : don't build CIA file

Examples (note this is not the correct key):

• PlaiCDN.exe 000400000014F200 abb5c65ecaba9bcd29d1bfdf3f64c285
  • this would create a .CIA and .3DS file for "Animal Crossing: Happy Home Designer"
• PlaiCDN.exe 000400000014F200 abb5c65ecaba9bcd29d1bfdf3f64c285 -check
  • this would check if the key (abb5c65ecaba9bcd29d1bfdf3f64c285) for "Animal Crossing: Happy Home Designer" is correct (it's not)
• PlaiCDN.exe 000400000014F200 abb5c65ecaba9bcd29d1bfdf3f64c285 -redown -no3ds
  • this would create a .CIA file after redownloading previously downloaded encrypted files for "Animal Crossing: Happy Home Designer"
• PlaiCDN.exe -checkbin
  • this would check all keys in decTitleKeys.bin to see if they match their titles, in addition to outputting metadata on them pulled from the CDN

If you are using the script itself instead of the compiled .exe, you will also need Python 3 to be installed, and PyCrypto to be installed.

If pycrypto gives you issues installing, try using this.

The executable was created with the command pyinstaller --onefile PlaiCDN.py

This project was forked from CDNto3DS and includes expanded features and capabilities, including use on non windows platforms thanks to its reliance on PyCrypto instead of aescbc.