## Cryptography and Network Security Notes PDF

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Topics in our Cryptography and Network Security Notes PDF

The topics we will cover in these **Cryptography and Network Security Notes pdf** will be taken from the following list:

**Cryptography and Data Encryption Standard (DES):** Overview of Cryptography, Computer security concepts, Security attacks, Symmetric cipher model, Cryptanalysis and brute-force attack, Substitution techniques, Caesar cipher, Monoalphabetic ciphers, Playfair cipher, Hill cipher, Polyalphabetic ciphers, One-time pad, Transposition techniques, Binary and ASCII, Pseudo-random bit generation, Stream ciphers and Block ciphers, Feistal cipher, Data encryption standard (DES), DES example.

**Algorithms and Advanced Encryption Standard (AES):** Review of basic concepts in Number theory and Finite Fields: divisibility, polynomial and modular arithmetic, Fermat’s and Euler’s theorems, Chinese remainder theorem, Discrete logarithm, Finite fields of the form GF(p) and GF(2^{n}); Advanced encryption standard (AES), AES transformation functions, AES key expansion, AES example.

**Public-key Cryptography:** Principles of public-key cryptosystems, RSA algorithm, and security of RSA, Elliptic curve arithmetic, Elliptic curve cryptography, Cryptographic Hash functions, Secure Hash algorithm.

**Digital Signatures and Network Security:** Digital signatures, Elgamal and Schnorr digital signature schemes, Digital signature algorithm. Wireless network and mobile device security, Email architecture, formats, threats and security, Secure/Multipurpose Internet Mail Extension, Pretty Good Privacy.

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