Belariath

cryptography/codebreaking

This skill would be an unranked skill that would allow the passing of covert messages, between individuals and allow the securing of information in a way that better ensures secrecy to those versed in this skill. it can be used to great benefit to the Empire and Nobles alike, allowing their spies and agents including the Imperial Guard to pass intelligence in a way previously unknown to the citizens and others.

but this also allows normal citizens with this skill to create symbol or numeric codes, most of which would be more rudimentary and elementary but equally as effective through the simplicity.

I like this skill, a good way for spies to interact with their nobles. Though you'd probably want to flesh it out some so its not abused being used to communicate in public to just anyone.

Idea: Possibly only a code for each house so not anyone learning the code could decipher it back and forth.

It's come up before and deemed unnecessary