If a message is encrypted with more than one encryption method, is it technically solvable? For example, if I encode a message using Vigenere ciphering and then I re-encoded this output using a poly-symbolic, non-letter alphabet would it be possible to decrypt? Without character frequencies (lost with the Vigenere) and pattern recognition (hidden by the poly-symbolic alphabet) I can't see how it could be done.
2007-08-27 10:21:05 · 1 answers · asked by Jason V 3 in Education & Reference ➔ Words & Wordplay
If you can do it, someone can undo it. There are formulas, long ago forgotten by me that take vigenere ciphering and commit it to a common field, in essence, re-coding the process. Then by means of the Foresman Decryption formula, any associated decryption is uncovered. Character frequencies can be reclaimed. We experienced many variations of this process in world war II. The process is highly secret, so much so that the Foresman formula is well guarded even today.
2007-08-27 10:40:35 · answer #1 · answered by loufedalis 7 · 0⤊ 0⤋