Block Cipher - Data Encryption Standard | S7 | KTU | CSE | Cryptography and Network Security

My twentyfirst short lecture video in Malayalam on Block Cipher - Data Encryption Standard from CS409 Cryptography and Network Security (CNS) of S7 B.Tech CSE of APJ Abdul Kalam Technological University aka KTU. Module 1 playlist: https://www.youtube.com/playlist?list=PLbk_UBP9SbJJc29eyReePkYtc-gffiI97 Substitution numericals: https://youtu.be/b0MUXxd0MuE Transposition numericals: https://youtu.be/Jw-ac1srW5c HEADPHONES RECOMMENDED! If you like this video, please like and share it with your friends. Please comment your suggestions down :) LIKE, SHARE, SUBSCRIBE എന്നിവ മറക്കരുത് !!! കൂടാതെ, നിങ്ങളുടെ അഭിപ്രായങ്ങൾ എന്നോട് പറയുക.. :D Lecture Notes Series by MERIN DAVID!!! Follow me on Instagram: https://instagram.com/merindavidjohn KTU Assist: Website : http://www.ktuassist.in App : http://app.ktuassist.in Instagram : http://www.instagram.com/ktu_assist Facebook: http://www.facebook.com/ktuassist Telegram: t.me/ktustudymaterials #ktu #cse #apjabdulakalam #lecturenotes #merindavid #computerscience #technological #university #btech #engineering #it #informationtechnology #oruarivumcheruthalla #cryptography #networksecurity #s7 #cs409 #cns #symmetriccipher #substitution #monoalphabetic #polyalphabetic #caesarcipher #hillcipher #vigenerecipher #onetimepad #encryption #decryption #ciphertext #plaintext #playfaircipher #transposition #railfence #rotormachines #steganography #charactermarking #invisibeink #pinpunctures #typewritercorrectionribbon #des #dataencryptionstandard