Substitution Ciphers

• Shifted alphabets
  • C = P + K mod 26
  • Caesar Cipher (K=3)
  • Key is the shift
• Cipher alphabet
  • Key is the substitution alphabet
• Cryptanalysis: Single letter frequency analysis

• PreviousTransposition Cryptanalysis
• Contents
• NextPolyalphabetic Ciphers

 Last change: Friday, June 6, 2003 5:18 pm
 Unless otherwise expressly stated, all original material on this page created by Diomidis Spinellis is licensed under a Creative Commons Attribution-Share Alike 3.0 Greece License.