Today an anonymous PS3 developer has released a PS3 K_License Extractor Python Script for PlayStation 3 PKG files.
Download: PS3 K_License Extractor Python Script for PKG Files / PS3 K_License Extractor Python Script for PKG Files (Mirror)
To quote: An anonymous developer has released a K_License Extractor for use on retail and debug PKGs.
The k_license is a unique license string generated and embedded in PSN and other PKG files. The script will retrieve and display this k_license when ran.
Please note the app is in the form of a python script and meant for experienced devs.
More PlayStation 3 News...