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Substituted letters with Symbols (originally designed for 25 letters)
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Meant to instruct women how to hide secret messages
Split alphabet substition method -
Created by Polybius
Based on a 5x5 letter matrix -
Subsitution method (basic building block for encryption techniques)
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First mentioned in 1553 by Giovan Battista Bellaso
Misattributed to Blaise de Vigenère -
Created by: Francis Bacon
Binary Steganography -
Best known multiple-letter encryption
Sir Charles Wheatstone -
Based on the Vigenère cipher
Registered with Library of Congress in 1874 -
Base on the Polybius Cipher
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Created by: Felix Delastelle
Uses four 5x5 matrices place in a square pattern -
Created by: Gilbert Vernam
Works on binary bits instead of letters -
Suggested improvement to the Vernam Cipher
By: Joseph Mauborgne
Considered truly unbreakable if done right -
Used by: Germany & Japan during WWII
Paved the way for today's Data Encryption Standard (DES) -
Similar to Playfair - it hides single-letter frequencies
By: Lester Hill -
Phoneitc Navajo Language substitution
By: Philip Johnston