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Cryptography and Network Security Notes JNTU | CNS Notes JNTU

Crytography and Network Security Notes JNTU – CNS Notes JNTU of Total Complete Notes

Please find the download links of Crytography and Network Security Notes JNTU | CNS Notes JNTU are listed below:

Link:Complete Notes

Introduction

Information Transferring

Attack: Interruption,Interception,Modification,Fabrication

Attacks, Services and Mechanisms,Important Features of Security.

Network Security Model,Cryptography,Basic Concepts,Encryption and Decryption.

Security,History,Classical Cryptographic Techniques.

Key Management,Attacks,Possible Attacks.Steganography,Caesar Cipher.

Mathematical Model,Character Frequencies,Letter Frequency Analysis.

Modular Arithmetic Cipher,

Letter Frequency Analysis:Single Letter, Double Letter,Triple Letter.

Playfair Cipher:Use filler letter to separate repeated letters,Encrypt two letters together.

Analysis:Difficult to use frequency analysis,But vulnerable to known-plaintext attack.

Polyalphabetic Substitution and for more please download the above PDF file.

 

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