You're chasing down a dead end my friend.

Here is quest 211: http://tibia.wikia.com/wiki/The_Para..._Quest/Spoiler

It does reference lots of things within the post that Sara included, however things that are in that guy's "solution" have already been disproven (including the tower in Carlin with the magical grass that contains a key). That quest is now this: http://tibia.wikia.com/wiki/Kissing_a_Pig_Quest/Spoiler. Leads me to believe that his story is bullshit. Also, no one at CIP would be capable of that level of encryption.