The Enigma Configuration

Hell Cube #5 The Enigma Configuration:
The Enigma Configuration has only ever been solved once. It is assumed that the interceptor has an Enigma machine. The protection against decryption then depends on the number of setting combinations that have to be tried in order to decipher the cube.
The basic 3-rotor Enigma has 6X6X6 = 216 possible rotor states for each of 6 wheel orders giving 6x216 = 1,296 Cube states. For each state within the cube (with ten pairs of Combination connections) can be in 78,364,164,096 possible states.
The task facing anyone trying to decipher a particular Configuration is to find which one of these 78 billion settings has been used before.
The Germans considered the task to be impossible, and certainly even a modern computer might take a year to work through this number of Configuration settings, if it simply tried them out in turn.

Have fun!