DrewDad wrote:Anything encrypted properly should actually look like random noise.
That may be true with current computer encryption technology, but we need to consider the state of the art in the 16th century, when this manuscript was apparently forged. Ciphers in those days were, as far as I know, all simple substitution codes, where letters, numbers, or symbols were used in place of letters and words. The substitution codes could be quite rudimentary, as the cipher in Edgar Allen Poe's
The Gold Bug, or they could be elaborately complex. In the end, though, they were all based on the same concept, and, fed through a computer, the code shouldn't produce something akin to random noise.