Contents: ch. 1 Basics of Security and Cryptography / Al-Sakib Khan Pathan ch. 2 Classical Cryptographic Algorithms / Saiful Azad ch. 3 Rotor Machine / Saiful Azad ch. 4 Block Cipher / Saiful Azad ch. 5 Data Encryption Standard / Saiful Azad ch. 6 Advanced Encryption Standard / Saiful Azad ch. 7 Asymmetric Key Algorithms / Saiful Azad ch. 8 The RSA Algorithm / Sa…