Ancient Dwarven Cypher

The Ancient Dwarven Cypher is a special encryption method developed in the late years of the New Era. The group that developed it was a secret order of highly skilled Dwarves that wanted to keep their information secret. The first known instance of the cypher being used was in a document detailing how to build an automaton that could travel between dimensions. This document was found in an old Dwarven fortress deep within the mountains in 0016 2.E. and is dated 1896 N.E. The latest known instance of the cypher being used was found in 654 3.E. on an automaton’s body. The automaton is believed to have been constructed in the early years of the First Era, though its exact construction date is unknown.
The cypher itself consists of three steps of encryption, with each step adding an exponential amount of possibilities to the one before it. The code can only be deciphered with a special machine made by the Dwarves called a Cypher Sphere The first step consists of two parts, the first of which involves creating a letter circle, with the letter A at the top of the circle, and with each letter after it following in a clock-wise rotation. This will enable the person using the cypher to find the letter opposite the one they are encrypting and use that for the cypher. This letter is used in step two.
Step two involves using one of seven different Cypher Spheres. Each Cypher Sphere has a different possible set of alpha-numeric arrangements, with each letter corresponding to a number on the opposite side of the sphere. Each sphere has 52 different possible arrangements, and no two spheres share an arrangement. Which set is being used can be randomized by pressing a small button on the top of the sphere. The spheres are numbered 1 through 7, and each set for each sphere is numbered 1 through 52. The result from step two is used in step three.
Step three also uses the Cypher Spheres. Depending on the level of encryption desired, the same sphere can be used on a different set, or a different sphere entirely can be used. This step involves plugging the numbers obtained from step two into the Cypher Sphere, which will result in a different corresponding letter. The message is then written in with these letters. Some denotation of which spheres and which sets were used often accompanies the message in some way, though not always.