Maestro Nikola:
His name is Luka, a seller of blueprints at the smithy in the town of Oren. I'm only slightly acquainted with him, but I am sure that he will be able to decode this password. I feel I must warn you, though -- he is somewhat lazy and is unlikely to help you without some kind of compensation.
I know he is passionate about the accessories worn by Leto Lizardmen found on the Plains of the Lizardmen. Get those accessories for him and I am sure he will help.