Polyalphabetic Cipher (Vigenère Cipher)

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://bit.ly/3EpZgBD Memberships: https://bit.ly/2U7YSPI Discord: https://bit.ly/3HiGtJr WhatsApp: https://whatsapp.com/channel/0029Va9B1Bq4tRru0nqgtx3h Books: https://bit.ly/4cZYQil Website ► https://www.nesoacademy.org/ App ► https://play.google.com/store/apps/details?id=org.nesoacademy Facebook ► https://www.facebook.com/nesoacademy Twitter [X] ► https://x.com/nesoacademy Music: Axol x Alex Skrindo - You [NCS Release] #NetworkSecurityByNeso #Cryptography #NetworkSecurity #PolyalphabeticCipher #VigenèreCipher