CY-302 RGPV B.Tech
Fundamentals of Cryptography (FC)
Previous year papers and the official syllabus are free to read, no account needed.
Previous Year Papers
4 papers, latest Dec 2025
Syllabus, notes and important questions for CY-302
Syllabus units
Topics as the official RGPV syllabus lists them.
Unit 1 Introduction to Cryptography and Perfect Secrecy 10 topics
- Introduction of cryptography
- Symmetric‑key encryption
- Historical ciphers
- Computational security
- Semantic security
- Pseudorandom generators (PRGs)
- Perfect secrecy
- One‑time‑pad encryption
- Characterizations of perfect secrecy
- Limitations of perfect secrecy
Unit 2 Block Cipher Modes, MACs and Hash Functions 7 topics
- CPA‑secure ciphers from PRF
- Modes of operation of block ciphers
- Data Encryption Standard (DES)
- Advanced Encryption Standard (AES)
- Message Authentication Codes (MAC)
- Information‑theoretic secure MAC
- Cryptographic hash functions
Unit 3 Hash Functions, Authenticated Encryption and Key‑Exchange 11 topics
- Ideal‑cipher model
- Davies‑Meyer construction
- Merkle–Damgård paradigm
- Birthday attacks on cryptographic hash functions
- Applications of hash functions
- Random oracle model
- Authenticated encryption
- Generic constructions of authenticated encryption schemes
- Key‑exchange problem
- One‑way trapdoor functions
- Cyclic groups
Unit 4 Public‑Key Foundations and Elliptic‑Curve Cryptography 5 topics
- Discrete‑logarithm problem
- Computational Diffie‑Hellman problem
- Decisional Diffie‑Hellman problem
- Elliptic‑curve based cryptography
- Public‑key encryption
Unit 5 Advanced Public‑Key Protocols and Applications 5 topics
- CCA‑secure public‑key hybrid ciphers based on Diffie‑Hellman problems and RSA assumption
- Digital signatures
- Overview of TLS/SSL
- Number theory
- Interactive protocols
Exam insights
Counted from 4 past CY-302 papers.
Marks asked per paper, by unit
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Unit 1 Introduction of cryptography 28 marks
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Unit 2 CPA-Secure Ciphers from PRF, Modes of Operations and MAC 26 marks
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Unit 3 Ideal-Cipher Model, Hash Constructions and Authenticated Encryption 23 marks
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Unit 4 Discrete-Logarithm Problem, Diffie-Hellman and Public-Key Encryption 14 marks
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Unit 5 CCA-secure Ciphers, Digital Signatures and TLS/SSL 19 marks
Average marks of the questions from each unit in one paper. You answer only some of them, so the total is more than the paper’s maximum.
Asked again and again
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Compare symmetric-key (secret key) cryptography and asymmetric-key (public key) cryptography.
Asked 3 times: 2024, 2023
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Define perfect secrecy and discuss its characterizations and limitations.
Asked 2 times: 2025, 2024
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Define cryptography and explain symmetric-key encryption technique with diagram.
Asked 2 times: 2025, 2024