POLYALPHABETIC CRYPTO
PROGRAM
(Polyalphabetic Cipher Encryption/Decryption)
The Polyalphabetic Cipher
(often referred to as a Vigenère)
uses a KEY which determines which letter in a cipher alphabet is used to
create the ciphertext message. Normally, the cipher alphabet is 26 letters
arranged alphabetically (a-z). This program can use a cipher alphabet of
up to 39 characters and they can be arranged in any sequence desired. There
is no limit to the number of characters in the KEY. It also allows a 'codemaker' to create a polyalphabetic cipher system of his own design and has a crib dragging function for cracking polyalphabetic ciphertext. The PolyAlphabetic Crypto Program is extremely flexible and a very useful crypto tool.
Get your FREE
Secret Code Breaker - PolyAlphabetic Cipher Program.
A Visual
Basic program written by David Smith for Secret Code Breaker that can encrypt and decrypt secret messages using a 39 character cipher alphabet. Great for creating your own personal cipher system.
It is a different program than any of the codebreaker programs that come on the diskette included with "Secret Code Breaker - A Cryptanalyst's Handbook" series.
The download is a Zip file. Requires IBM compatible
computer, running Windows95 or above.
Currently no Macintosh version is available.
Click here for the Secret Code
Breaker program download page.
