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Dr. Dibyendu Roy

Assistant Professor,

Indian Institute of Information Technology Vadodara,

Gandhinagar, Gujarat, India

Email: dibyendu.roy@iiitvadodara.ac.in

Profile in: DBLP , Google Scholar


Hi welcome to my personal webpage. I am an Assistant Professor at Indian Institute of Information Technology Vadodara. Previously, I was a Postdoctoral-Fellow-cum-Lecturer at Indian Statistical Institute, Kolkata, India. I have obtained my PhD and M.Sc. from Indian Institute of Technology Kharagpur, India. I work in the area of Cryptology.

If you are interested in working with me please drop an email.



Students

  1. Notan Roy (Scientist E, MeitY) - PhD Student (1st year in progress).

  2. R Radheshwar - PhD Student (3rd year in progress).



Sponsored Project

  1. Start-up Research Grant (SRG) - SERB.

    Title - Design and Analysis of Fully Homomorphic Encryption (FHE) Supported Stream Ciphers.

    My Role - PI.

    Status - Completed.



Teaching

  1. [CS203 & CS263] Design Analysis of Algorithms (Theory+LAB) – [Autumn 2023-24, 2024-25] (UG, IIIT Vadodara).

  2. [CS603 & CS661] Advanced Algorithms (Theory+LAB) – [Autumn 2023-24, 2024-25] (PG, IIIT Vadodara).

  3. [CS309 & CS369] Introduction to Cryptography and Network Security (Theory+LAB) – [Autumn 2024-25] (UG, IIIT Vadodara).

  4. [CS304 & CS364] Introduction to Cryptography and Network Security (Theory+LAB) – [Winter 2023-24, 2022-23, 2021-22, 2020-21] (UG, IIIT Vadodara).

  5. [MA403] Introduction to Modern Algebra – [Autumn 2022-23] (UG, IIIT Vadodara).

  6. [IT301 & IT361] Information Security (Theory + LAB) – [Autumn 2022-23, 2021-22] (UG, IIIT Vadodara).

  7. [MA104] Discrete Mathematics – [Winter 2020-21](UG, IIIT Vadodara – ICD)

  8. [CS646] Cryptography and Network Security (Theory) – [Winter 2020-21] (PG, IIIT Vadodara).

  9. Discrete Mathematics – [Winter 2020-21](M.Tech CrS ISI Kolkata) jointly with Dr. Sabyasachi Karati.



List of Publications

Book:

  1. Chandra Sekhar Mukherjee, Dibyendu Roy and Subhamoy Maitra. “Design & Cryptanalysis of ZUC-A Stream Cipher in Mobile Telephony”, Springer 2021, ISBN 978-981-33-4881-3, pp. 1-92. [Link]


Journals & Conferences:

  1. Meenakshi Kansal, Animesh Roy, Dibyendu Roy, Srinivasu Bodapati and Anupam Chattopadhyay. “Priority Arbiter PUF: Analysis”. Discrete Applied Mathematics, vol. 356, pp. 71-95, Elsevier, 2024.

  2. Pierrick Meaux and Dibyendu Roy. “Theoretical differential fault attacks on FLIP and FiLIP”. Cryptography and Communications, vol. 16(4), pp. 721-744, Springer, 2024.

  3. R Radheshwar, Meenakshi Kansal, Pierrick Meaux, Dibyendu Roy. “Differential Fault Attack on Rasta and FiLIPDSM”. IEEE Transactions on Computers, vol. 72(8), pp. 2418-2425, 2023.

  4. Ravi Anand, Dibyendu Roy and Santanu Sarkar. “Some results on lightweight stream ciphers Fountain v1 & Lizard”. Advances in Mathematics of Communications, American Institute of Mathematical Sciences, vol. 17(2), pp. 298-319, 2023.

  5. Bhagwan Bathe, Siddhartha Tiwari, Ravi Anand, Dibyendu Roy and Subhamoy Maitra. “Differential Fault Attack on Espresso”. In the proceeding of 22nd edition of International Conference on Cryptology in India (Indocrypt 2021), LNCS, Springer, 2021.

  6. Animesh Roy and Dibyendu Roy and Subhamoy Maitra. “How do the Arbiter PUFs Sample the Boolean Function Class?”. In the proceeding of 28th Edition of Selected Areas in Cryptography (SAC 2021), LNCS, Springer, 2021.

  7. Dibyendu Roy, Deepak Kumar Dalai. “An Observation of Non-randomness in NFSR Based Stream Ciphers with Reduced Initialization Round”. Journal of Hardware and Systems Security, vol 5, pp 89–102, 2021.

  8. Dibyendu Roy, Bhagwan Bathe and Subhamoy Maitra. “Differential Fault Attack on Kreyvium & FLIP”. IEEE Transactions on Computers, vol 70(12), pp 2161-2167 (2021).

  9. Chandra Sekhar Mukherjee, Subhamoy Maitra, Vineet Gaurav and Dibyendu Roy. "Preparing Dicke States on a Quantum Computer", IEEE Transactions on Quantum Engineering, vol 1, pp 1-17, 2020.

  10. Subhamoy Maitra, Bimal Mandal, Thor Martinsen, Dibyendu Roy and Pantelimon Stanica. “Analysis on Boolean function in a restricted (biased) domain”. IEEE Transactions on Information Theory, vol 66(2), 2020.

  11. Abhishek Kesarwani, Dibyendu Roy, Santanu Sarkar and Willi Meier. “New cube distinguishers on NFSR-based stream ciphers”. Designs, Codes and Cryptography, vol 88(1), 2020.

  12. Akhilesh Anilkumar Siddhanti, Srinivasu Bodapati, Anupam Chattopadhyay, Subhamoy Maitra, Dibyendu Roy and Pantelimon Stanica. “Analysis of the Strict Avalanche Criterion in variants of Arbiter-based Physically Unclonable Functions”. In the Proceeding of the 20th International Conference on Cryptology in India (Indocrypt 2019), LNCS, Springer, 2019.

  13. Deepak Kumar Dalai, Subhamoy Maitra, Santu Paul and Dibyendu Roy. “Distinguisher & Non-randomness of Grain-v1 for 112, 114 & 116 initialization rounds with multiple-bit difference in IVs”. IET-Information Security, vol 13(6), 2019.

  14. Debajyoti Bera, Subhamoy Maitra, Dibyendu Roy and Pantelimon Stanica. “Limitation of the BLR testing in estimating nonlinearity”. Accepted at WCC 2019: The Eleventh International Workshop on Coding and Cryptography.

  15. Subhamoy Maitra, Bimal Mandal, Thor Martinsen, Dibyendu Roy and Pantelimon Stanica. “Tools in analysing linear approximation for Boolean functions related to FLIP”. In the Proceeding of the 19th International Conference on Cryptology in India (Indocrypt 2018), LNCS, Springer, 2018

  16. Deepak Kumar Dalai, Dibyendu Roy. “An observation of non-randomness in the Grain family of stream ciphers with reduced initialization round”. In the Proceeding of the 8th International Conference on Security, Privacy, and Applied Cryptography Engineering (SPACE 2018), LNCS, Springer, 2018

  17. Deepak Kumar Dalai, Dibyendu Roy. “A State Recovery Attack on ACORN-v1 and ACORN-v2”. In the Proceeding of the 11th International Conference on Network and System Security (NSS 2017), LNCS, Springer, 2017

  18. Dibyendu Roy, Sourav Mukhopadhyay. “A deterministic approach for finding cube variables for cube attack”. (Accepted as a short paper in Inscrypt, 2016)

  19. Dibyendu Roy, Ankita Chaturvedi and Sourav Mukhopadhyay. “New Constructions of T- function”. In the Proceeding of the 11th Information Security Practice and Experience Conference (ISPEC 2015), LNCS, Springer, 2015.

  20. Dibyendu Roy, Pratish Datta and Sourav Mukhopadhyay, “Algebraic Cryptanalysis of Stream Ciphers Using Decomposition of Boolean Function”. Journal of Applied Mathematics and Computing, Springer,2014.

  21. Pratish Datta, Dibyendu Roy and Sourav Mukhopadhyay. “A Probabilistic Algebraic Attack on the Grain Family of Stream Ciphers”. In the Proceeding of the 8th International Conference on Network and System Security (NSS 2014), LNCS, Springer, 2014.

  22. Dibyendu Roy, Pratish Datta and Sourav Mukhopadhyay. “A New Variant of Algebraic Attack”. In the Proceeding of the 2nd International Conference on Security in Computer Networks and Distributed Systems (SNDS-2014), Springer, 2014.


Technical Reports:

  1. Dibyendu Roy and Sourav Mukhopadhyay. “Some results on ACORN”. IACR Cryptology ePrint Archive 2016: 1132.

  2. Dibyendu Roy and Sourav Mukhopadhyay. “Fault analysis and weak key-IV attack on Sprout”. IACR Cryptology ePrint Archive 2016: 207.

  3. Dibyendu Roy and Sourav Mukhopadhyay. “Fault analysis on the stream ciphers LILI-128 and Achterbahn”. IACR Cryptology ePrint Archive 2015: 1077.