The previous avatars of this book have been used and recommended by thousands of students, teachers and IT professionals. Aiming to serve the same audience, the author Atul Kahate, has updated this book as per current technological demands. It is meant to explain the key concepts in cryptography to anyone who has a basic understanding in computer science and networking concepts.This fourth edition is a comprehensive introduction to computer security/ cryptography. Lucid and crisp presentation backed with bottom up approach make the book perspicuous to even a first- time reader and increases interest in the application aspects of the subject.Salient Features:✔ Highly illustrative with step-by-step explanations✔ Comprehensive coverage of topics like Cryptography, Algorithms, Network security, Online security, Authentication mechanisms✔ Inclusion of new topics like SHA-512, Biometrics and AES✔ Incorporates topics for professionals such as Firewalls, VPNs, Digital signatures etc.✔ Includes practical and real-life cases, such as online payment mechanisms, how proxy servers work using NAT, how are Websites verified online etc
