Course Detail of the Subject - Information Security

INFORMATION SECURITY (2205PC13) 

Credits: 3

Prerequisites: Computer Networks, Mathematics 

Course Outcome:

Upon successful completion of this course, students will be able to:

1. Classify security attacks, services, and mechanisms, and apply classical & block ciphers (DES, Blowfish) with appropriate modes.
2. Implement public key algorithms (RSA, Diffie-Hellman, ECC) and use hash functions & MACs (SHA-512, HMAC) for authentication.
3. Apply digital signatures, Kerberos, X.509, and configure email security (PGP, S/MIME).
4. Analyze IPSec (AH, ESP, key management) and evaluate web security protocols (SSL/TLS, SET).
5. Identify malware and intruders, and design firewall rules & IDS for network defense.

UNIT I – Security Attacks, Services & Classical Encryption

• Attacks
• Interruption
• Interception
• Modification
• Fabrication
• Services
• Confidentiality
• Authentication
• Integrity
• Non-repudiation
• Access Control
• Availability
• Classical encryption
• DES
• Strength of DES
• Differential & linear cryptanalysis
• Block cipher principles
• Modes of operation
• Blowfish
• Traffic confidentiality
• Key distribution
• Random number generation

UNIT II – Public Key Crypto & Message Authentication

• Public key principles
• RSA
• Key management
• Diffie-Hellman
• Elliptic Curve Cryptography
• Message authentication
• Hash functions
• MACs
• SHA-512
• HMAC

UNIT III – Digital Signatures & Email Security

• Digital signatures
• Authentication protocols
• Digital Signature Standard
• Kerberos
• X.509
• Email security: PGP, S/MIME

UNIT IV – IP & Web Security

• IP Security (IPSec)
• Architecture
• AH
• ESP
• Security Associations
• Key Management
• Web Security
• SSL/TLS
• SET (Secure Electronic Transaction)

UNIT V – Intruders, Malware & Firewalls

• Intruders
• Viruses
• Worms
• Firewall design principles
• Trusted systems
• Intrusion detection systems (IDS)

Text Book:

• Cryptography and Network Security – William Stallings, Pearson, 4th Ed.

Reference Books: 

1. Network Security Essentials – Stallings (Reference)
2. Principles of Information Security – Whitman, Thomson (Reference)

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