"Learn about transposition ciphers in cybersecurity, where plaintext messages are rearranged for secure communication. Explore rail fence ciphers and decryption techniques to ensure data security."
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
Principles of Cyber Security Lecture Lecture 07 07: : Traditional Traditional Ciphers_I Ciphers_I Dr. Dr. Muamer Muamer Mohammed Mohammed 1
Objectives 7.1 Explain how to implement cryptography Describe the traditional ciphers 7.2 algorithms (transposition algorithms).
Transposition Ciphers Transposition Ciphers are ciphers in which the plaintext message is rearranged by some means agree upon by the sender and receiver. 3
Simple Types of Transposition Ciphers Rail Fence Cipher: write the plaintext in a zig-zag pattern in two rows and form the ciphertext by reading off the letters from the first row followed by the second. 4
Transposition Ciphers Example 1: Encipher CHUCK NORRIS IS A TOUGH GUY using a rail fence cipher. Solution: 5
Transposition Ciphers Note: to decipher a rail fence cipher, we divide the ciphertext in half and reverse the order of the steps of encipherment, that is, write the ciphertext in two rows and read off the plaintext in a zig-zag fashion. 6
Summary Cryptography that is improperly applied can lead to vulnerabilities that will be exploited. In transposition Cipher Technique, plain text characters are rearranged with respect to the position. 7
