I feel terrible about asking, but, is there any hint you can give on the cypher? I think I know they key, I'm so close! I just can't find the actual cypher, and I suck at guessing games.
No problem! One of terminals in the room, if you play with it, will help you out. Just write down the cypher and keep looking.
Also, you only need the cypher for one ending, so don't get too bogged down. :)
I hope this helps!