DES Encryption in Tamil: Key Schedule & Decryption Explained 🔐

#cybersecurity #DESCipher #DES Basics

This is our ambitious project started to explain the origin, evolution, present, and future of cyber security based on the following books in Tamil

Code book by Simon Singh in Tamil
This Is How They Tell Me the World Ends: The Cyberweapons Arms Race by Nicole Perloth in Tamil
CISSP - Certified information security professional in Tamil

PART 1: Cybersecurity session 07a: DES EncryptionTamil Link

https://www.youtube.com/watch?v=6UP04_qMdZY&ab_channel=Let%27sLearn

Cybersecurity session 07b: DES Key Schedule & DES DecryptionTamil

00:00 Introduction
01:00 Parity Bit
02:35 XOR characteristics
03:38 Left Shift and Right Shift
05:26 DES Revise the previous Session
07:07 DES Key Schedule Encryption
13:42 DES Key Schedule Decryption
15:00 DES Decryption
22:00 DES Security
25:00 Triple DES
28:50 Conclusion and next session


I want to thank Christoff Par for his lecture about DES and where i learned more intricacies and facts about DES. Most of the content with respect to DES is inferred from his lecture. The following link leads to his full lecture on DES

https://www.youtube.com/watch?v=l-7YW06BFNs&t=487s&ab_channel=IntroductiontoCryptographybyChristofPaar

I want to thank the university of Siegen for their open-source tool Crypttool which I have used in this session for the demonstration of Enigma Cipher

You can download the tool from the following link
https://www.cryptool.org/en/

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