I don’t have any super-special insight here, but FBID is facebook’s global integer ID namespace (fun fact: Zuckerberg’s account is 3, back in the day he was always getting random friend requests from people’s unit tests). Don’t know what a “p”-FBID is.
I know symmetric encryption is reasonably cheap these days, but anything times “Facebook edge requests” is a lot, I bet any of the cryptographers on here could find out pretty quickly what’s in that blob.
I know symmetric encryption is reasonably cheap these days, but anything times “Facebook edge requests” is a lot, I bet any of the cryptographers on here could find out pretty quickly what’s in that blob.