Cryptography and Network Security

Paper Code: 
MCA 422
Credits: 
04
Periods/week: 
04
Max. Marks: 
100.00
Objective: 
  • To understand the fundamentals of Cryptography 
  • To acquire knowledge on standard algorithms used to provide confidentiality, integrity and Authenticity.
  • To understand how to deploy encryption techniques to secure data in transit across data
14.00
Unit I: 
Introduction to security attacks

services and mechanism, classical encryption techniques- substitution ciphers and transposition ciphers, cryptanalysis, stream and block ciphers. Modern Block Ciphers: Block ciphers principals, Shannon’s theory of confusion and diffusion, fiestal structure, data encryption standard(DES), differential and linear cryptanalysis of DES, block cipher modes of operations, triple DES.

12.00
Unit II: 
Encryption Tchnique

AES, RC6, random number generation. S-box theory: Boolean Function, S-box design criteria, Bent functions, Propagation and nonlinearity, construction of balanced functions, S-box design.

14.00
Unit III: 
Public Key Cryptosystems

Principles of Public Key Cryptosystems, RSA Algorithm, security analysis of RSA, Exponentiation in Modular Arithmetic. Key Management in Public Key Cryptosystems: Distribution of Public Keys, Distribution of Secret keys using Public Key Cryptosystems. X.509 Discrete Logarithms, Diffie-Hellman Key Exchange

10.00
Unit IV: 
Message Authentication and Hash Function

Authentication requirements, authentication functions, message authentication code, hash functions, birthday attacks, security of hash functions and MAC, MD5 message digest algorithm, Secure hash algorithm(SHA). Digital Signatures: Digital Signatures, authentication protocols, digital signature standards (DSS), proof of digital signature algorithm. Remote user Authentication using symmetric and Asymmetric Authentication

10.00
Unit V: 
Pretty Good Privacy

IP Security: Overview, IP Security Architecture, Authentication Header, Encapsulation Security Payload in Transport and Tunnel mode with multiple security associations (Key Management not Included). Strong Password Protocols: Lamport’s Hash, Encrypted Key Exchange.

ESSENTIAL READINGS: 
  • . Stalling Williams: Cryptography and Network Security: Principles and Practices, 4th Edition, Pearson Education, 2006
  • Kaufman Charlie et.al; Network Security: Private Communication in a Public World, 2nd Ed., PHI/Pearson
REFERENCES: 
  • Pieprzyk Josef and et.al; Fundamentals of Computer Security, Springer-Verlag, 2008
  • Trappe & Washington, Introduction to Cryptography, 2nd Ed. Pearson.
Academic Year: 
2018-19
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