Viewing Single Post From: Clarification

Viewing Single Post From: Clarification
jdege	Jul 7 2009, 01:02 PM
Elite member Posts: 263 Group: Admin Member #246 Joined: December 7, 2006	Gerry StPierre Jul 7 2009, 02:27 AM I had assumed that one of these two disks would be the plaintext, but that is not the case? Instead, a 'ring' of plaintext is also used? No, you're right. One ring of the disk is plaintext, the other is ciphertext. But the disk has 26 different alignments between the plaintext and the ciphertext, resulting in 26 different mappings between plaintext and ciphertext. In cryptography, an "alphabet" isn't a sequence of letters, it's a mapping of plaintext letters to ciphertext letters. {a->B, b->c, c->d, ... z->A} is an alphabet, and {a->C, b->D, c->E, ... z->B} is another, distinct alphabet.
	When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.

Clarification · Chaocipher