AdWords Creative ID from Referer String or GCLID?

After about an hour of reverse engineering, I definitely found that the gclid and the parameters in the AdWords referer's query string were binary encoded and held some sort of significance, but I couldn't get much further.

Has anyone had any luck determining a method to extract the AdWord's Creative ID (of an Ad) from either the gclid or the referer query string?

I'm aware of my alternate options, such as ValueTrack and custom tagging, but this ability would be fantastic.

Thanks for any input

Good luck in deciphering this, it will probably take you little as 3,444,232 years.