Cryptography & Information Security Notes in Hindi - RGPV Notes

Computer Science Engineering Tutorials in Hindi тАв 7th Semester Notes in Hindi тАв Year: 2026

Set A

Engineering Student Sample Exam Paper 2026 (RGPV)

CS703(A) тАУ Cryptography & Information Security

VII Semester тАУ B.Tech Computer Science Engineering

Model Question Paper тАУ Set A
Time: Three Hours
рд╕рдордп: рддреАрди рдШрдВрдЯреЗ
Maximum Marks: 70
рдЕрдзрд┐рдХрддрдо рдЕрдВрдХ: 70

Instructions / рдирд┐рд░реНрджреЗрд╢

  1. Attempt any five questions.
    рдХрд┐рдиреНрд╣реАрдВ рдкрд╛рдБрдЪ рдкреНрд░рд╢реНрдиреЛрдВ рдХреЛ рд╣рд▓ рдХреАрдЬрд┐рдПред
  2. All questions carry equal marks.
    рд╕рднреА рдкреНрд░рд╢реНрди рд╕рдорд╛рди рдЕрдВрдХ рдХреЗ рд╣реИрдВред
  3. In case of any doubt, English version will be treated as final.
    рдХрд┐рд╕реА рднреА рдкреНрд░рдХрд╛рд░ рдХреА рд╢рдВрдХрд╛ рдХреА рд╕реНрдерд┐рддрд┐ рдореЗрдВ рдЕрдВрдЧреНрд░реЗрдЬрд╝реА рд╕рдВрд╕реНрдХрд░рдг рдорд╛рдиреНрдп рд╣реЛрдЧрд╛ред

Q.1

14 Marks / 14 рдЕрдВрдХ

(a) Explain modular arithmetic and derive EulerтАЩs theorem with suitable example.

(7 Marks)

рдЙрдкрдпреБрдХреНрдд рдЙрджрд╛рд╣рд░рдг рд╕рд╣рд┐рдд рдореЙрдбреНрдпреВрд▓рд░ рдЕрдВрдХрдЧрдгрд┐рдд рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ EulerтАЩs theorem рдХрд╛ рд╡реНрдпреБрддреНрдкрд╛рджрди рдХреАрдЬрд┐рдПред

(b) Explain cryptanalysis and compare Caesar cipher and Playfair cipher.

(7 Marks)

Cryptanalysis рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ Caesar cipher рдПрд╡рдВ Playfair cipher рдХреА рддреБрд▓рдирд╛ рдХреАрдЬрд┐рдПред

Q.2

14 Marks / 14 рдЕрдВрдХ

(a) Explain DES algorithm and discuss the importance of S-box in DES.

(7 Marks)

DES algorithm рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ DES рдореЗрдВ S-box рдХреЗ рдорд╣рддреНрд╡ рдХреА рд╡реНрдпрд╛рдЦреНрдпрд╛ рдХреАрдЬрд┐рдПред

(b) Explain AES encryption process with key expansion and round transformations.

(7 Marks)

AES encryption рдкреНрд░рдХреНрд░рд┐рдпрд╛ рдХреЛ key expansion рдПрд╡рдВ round transformation рд╕рд╣рд┐рдд рд╕рдордЭрд╛рдЗрдПред

Q.3

14 Marks / 14 рдЕрдВрдХ

(a) Explain RSA algorithm with suitable example of encryption and decryption.

(7 Marks)

RSA algorithm рдХреЛ encryption рдПрд╡рдВ decryption рдХреЗ рдЙрдкрдпреБрдХреНрдд рдЙрджрд╛рд╣рд░рдг рд╕рд╣рд┐рдд рд╕рдордЭрд╛рдЗрдПред

(b) Explain Diffie-Hellman Key Exchange algorithm and discuss computational and decisional problems.

(7 Marks)

Diffie-Hellman Key Exchange algorithm рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ computational рдПрд╡рдВ decisional рд╕рдорд╕реНрдпрд╛рдУрдВ рдХреА рд╡реНрдпрд╛рдЦреНрдпрд╛ рдХреАрдЬрд┐рдПред

Q.4

14 Marks / 14 рдЕрдВрдХ

(a) Define Hash Function. Differentiate between MD5 and SHA algorithms.

(7 Marks)

Hash Function рдХреЛ рдкрд░рд┐рднрд╛рд╖рд┐рдд рдХреАрдЬрд┐рдП рддрдерд╛ MD5 рдФрд░ SHA algorithms рдореЗрдВ рдЕрдВрддрд░ рд╕реНрдкрд╖реНрдЯ рдХреАрдЬрд┐рдПред

(b) Explain Digital Signature Standard (DSS) with neat block diagram.

(7 Marks)

рд╕реНрд╡рдЪреНрдЫ рдмреНрд▓реЙрдХ рдЖрд░реЗрдЦ рд╕рд╣рд┐рдд Digital Signature Standard (DSS) рдХреЛ рд╕рдордЭрд╛рдЗрдПред

Q.5

14 Marks / 14 рдЕрдВрдХ

(a) Explain Kerberos Authentication System with suitable diagram.

(7 Marks)

рдЙрдкрдпреБрдХреНрдд рдЖрд░реЗрдЦ рд╕рд╣рд┐рдд Kerberos Authentication System рдХреЛ рд╕рдордЭрд╛рдЗрдПред

(b) Explain types of firewalls and discuss their role in network security.

(7 Marks)

Firewall рдХреЗ рдкреНрд░рдХрд╛рд░реЛрдВ рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ рдиреЗрдЯрд╡рд░реНрдХ рд╕реБрд░рдХреНрд╖рд╛ рдореЗрдВ рдЙрдирдХреА рднреВрдорд┐рдХрд╛ рдХреА рд╡реНрдпрд╛рдЦреНрдпрд╛ рдХреАрдЬрд┐рдПред

Q.6

14 Marks / 14 рдЕрдВрдХ

(a) Explain SSL/TLS handshake protocol with diagram.

(7 Marks)

SSL/TLS handshake protocol рдХреЛ рдЪрд┐рддреНрд░ рд╕рд╣рд┐рдд рд╕рдордЭрд╛рдЗрдПред

(b) Explain IPSec protocols AH and ESP used for secure transmission.

(7 Marks)

рд╕реБрд░рдХреНрд╖рд┐рдд transmission рд╣реЗрддреБ рдЙрдкрдпреЛрдЧ рдХрд┐рдП рдЬрд╛рдиреЗ рд╡рд╛рд▓реЗ IPSec protocols AH рдПрд╡рдВ ESP рдХреЛ рд╕рдордЭрд╛рдЗрдПред

Q.7

14 Marks / 14 рдЕрдВрдХ

(a) Explain Steganography and discuss different tools used for hiding information.

(7 Marks)

Steganography рдХреЛ рд╕рдордЭрд╛рдЗрдП рддрдерд╛ рд╕реВрдЪрдирд╛ рдЫрд┐рдкрд╛рдиреЗ рд╣реЗрддреБ рдкреНрд░рдпреБрдХреНрдд рд╡рд┐рднрд┐рдиреНрди tools рдХреА рд╡реНрдпрд╛рдЦреНрдпрд╛ рдХреАрдЬрд┐рдПред

(b) Explain vulnerability scanning tools and DoS attack understanding tools.

(7 Marks)

Vulnerability scanning tools рдПрд╡рдВ DoS attack understanding tools рдХреЛ рд╕рдордЭрд╛рдЗрдПред

Q.8

14 Marks / 14 рдЕрдВрдХ

Attempt any two / рдХрд┐рдиреНрд╣реАрдВ рджреЛ рдХреЛ рд╣рд▓ рдХреАрдЬрд┐рдП

(a) Elliptic Curve Cryptography (ECC)

(7 Marks)

рдПрд▓рд┐рдкреНрдЯрд┐рдХ рдХрд░реНрд╡ рдХреНрд░рд┐рдкреНрдЯреЛрдЧреНрд░рд╛рдлреА (ECC)

(b) Differential Cryptanalysis

(7 Marks)

Differential Cryptanalysis

(c) SSL/TLS Protocols

(7 Marks)

SSL/TLS рдкреНрд░реЛрдЯреЛрдХреЙрд▓

CS703(A) тАУ Cryptography & Information Security (VII Semester) | Model Question Paper тАУ Set A | RGPV Style
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Cryptography & Information Security Notes in Hindi - RGPV Notes Question Papers - Computer Science Engineering Tutorials in Hindi

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