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Cryptography and Network Security 21CS733

Cryptography and Network Security 21CS733

Download VTU notes, model papers, Question Bank for Cryptography and Network Security 21CS733 of 2021 scheme 7th semester…

Cryptography and Network Security 21CS733

Course Code: 21CS733

Credits: 03

CIE Marks: 50

SEE Marks: 50

Total Marks: 100

Exam Hours: 03

Total Hours of Pedagogy: 40H

Teaching Hours/Weeks: [L:T:P:S] 3:0:0:0

Classical Encryption Techniques: Symmetric Cipher Model, Cryptography, Cryptanalysis and Brute- Force Attack, Substitution Techniques, Caesar Cipher, Monoalphabetic Cipher, Playfair Cipher, Hill Cipher, Polyalphabetic Cipher, One Time Pad.

Block Ciphers and the Data Encryption Standard: Traditional block Cipher structure, Stream Ciphers and Block Ciphers, Motivation for the Feistel Cipher structure, the Feistel Cipher, The data encryption standard, DES encryption, DES decryption, A DES example, results, the avalanche effect, the strength of DES, the use of 56-Bit Keys, the nature of the DES algorithm, timing attacks, Block cipher design principles, number of rounds, design of function F, key schedule algorithm.

Public-Key Cryptography and RSA: Principles of public-key cryptosystems. Public-key cryptosystems. Applications for public-key cryptosystems, requirements for public-key cryptosystems. public-key cryptanalysis. The RSA algorithm, description of the algorithm, computational aspects, the security of RSA.

Other Public-Key Cryptosystems: Diffie-Hellman key exchange, The algorithm, key exchange protocols, man in the middle attack, Elgamal Cryptographic systems.

Key Management and Distribution: Symmetric key distribution using Symmetric encryption, A key distribution scenario, Hierarchical key control, session key lifetime, a transparent key control scheme, Decentralized key control, controlling key usage, Symmetric key distribution using asymmetric encryption, simple secret key distribution, secret key distribution with confidentiality and authentication, A hybrid scheme, distribution of public keys, public announcement of public keys, publicly available directory, public key authority, public keys certificates.

X-509 certificates. Certificates, X-509 version 3 Public key infrastructure.

User Authentication: Remote user Authentication principles, Mutual Authentication, one-way authentication, remote user Authentication using Symmetric encryption, Mutual Authentication, one- way Authentication.

Kerberos: Motivation, Kerberos version 4, Kerberos version 5, Remote user Authentication using Asymmetric encryption, Mutual Authentication, one-way Authentication.

Electronic Mail Security: Pretty good privacy, S/MIME.

IP Security: IP Security overview, IP Security policy, Encapsulating Security payload, Combining security associations, Internet key exchange.

2021 SCHEME QUESTION PAPER

Regular Paper

Model Set 1 Paper

Model Set 2 Paper

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m57
m57
29-12-2024 7:52 PM

Please upload notes

Sanjana SP
Sanjana SP
01-01-2025 8:23 AM

Please upload notes 🥺🙏🏼

Ram
Ram
01-01-2025 1:48 PM

Solution for model set1 question paper CNS.

Prerana S A
Prerana S A
01-01-2025 4:13 PM

Please upload notes for blockchain technology subject

Manushree H .
Manushree H .
09-01-2025 7:44 PM

Bro pls upload 21ME753 notes

NS
NS
11-01-2025 10:10 AM

Pls upload model question paper solved set 1 and 2 plz

Nikhita
Nikhita
11-01-2025 12:47 PM

Pls upload sloved model question set1and 2 plz

Ankitha S
Ankitha S
12-01-2025 12:28 PM

Please upload CNS model question paper solution set 1 and set 2

Vaishnavi Sampemane
Vaishnavi Sampemane
26-02-2025 2:52 PM

Pls upload notes…

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