Network Security: Polyalphabetic Cipher (Vigenère Cipher)
Topics discussed:
1) Classical encryption techniques and introduction to polyalphabetic substitution cipher.
2) Comparison of mono-alphabetic substitution cipher with a polyalphabetic substitution cipher.
3) Working of Vigenere cipher with an example.
4) Cryptanalysis on Vigenere Cipher: Repeating keys and frequency distribution of key and plaintext.
5) Need for auto-key system and effect of auto-key system on Vigenere cipher to improve the security of Vigenere cipher with an example.

Follow Neso Academy on Instagram: @nesoacademy (https://bit.ly/2XP63OE)

Contribute: http://www.nesoacademy.org/donate

Memberships: https://bit.ly/2U7YSPI

Books: http://www.nesoacademy.org/recommended-books

Website ► http://www.nesoacademy.org/
Forum ► https://forum.nesoacademy.org/
Facebook ► https://goo.gl/Nt0PmB
Twitter ► https://twitter.com/nesoacademy

Music:
Axol x Alex Skrindo - You [NCS Release]

#NetworkSecurityByNeso #Cryptography #NetworkSecurity #PolyalphabeticCipher #VigenèreCipher