SUMANTA SARKAR

Assistant Professor
University of Warwick, United Kingdom

sumanta (dot) sarkar (at) gmail (dot) com
sumanta (dot) sarkar (at) warwick (dot) ac (dot) uk



About Me     News     Workshop Organization     Grants     Invited Talks     Program Committee     Publications     Patents    

About Me :

I am an Assistant Professor at University of Warwick. Previously I was a Research Scientist at TCS Innovation Labs, Hyderabad. Prior to this I was a visiting scientist at Indian Statistical Institute, Kolkata, this is also the place where I wrote my Ph D thesis "Combinatorial Aspects in Construction of Cryptographically Significant Boolean Functions under different Symmetry Conditions" in 2008. I spent two years as a post doctoral fellow at SECRET, INRIA Paris-Rocquencourt followed by being a post doctoral fellow at the Department of Computer Science , University of Calgary.


NEWS:

  • Paper accepted to NDSS 2025



    Workshop Organization:

    Indian Workshop on Post-Quantum Cryptography (IWPQC 2020) : November 17th and 18th, 2020

    My Interests :

    Post-quantum Cryptography
    Privacy Preserving Machine Learning
    Blockchain
    IoT security


    Grants:
  • EPSRC Overseas Travel Grant EP/X036669/1: awarded £15,425 for the project Construction of Lattice based Post-quantum Signature Schemes.

    Invited Talks:
    Guest Lecture at University of Cambridge, UK
    University of New Brunswick, Canada
    Warwick Manufacturing Group, guest lecture
    Ashoka University
    Exeter University
    Information Security Group; Royal Holloway, University of London
    Chinese Academy of Science
    ABB, Bangalore
    Security of Critical Infrastructure Workshop, SETS, Chennai
    Design and Security Workshop, IIITDM, Jabalpur
    Conference on Ramanujan
    ASK, Changsha, China


    Program Committee:
    INDOCRPYT 2024, SETA 2024, WCC 2024, INDOCRYPT 2019, SETA 2018, SETA 2017, SPACE 2012 and SPACE 2013.

    Publications :

    Journal

  • Aydin Abadi, Vishnu Asutosh Dasu and Sumanta Sarkar
    ''Privacy-Preserving Data Deduplication for Enhancing Federated Learning of Language Models''
    Network and Distributed System Security (NDSS) Symposium, 2025.

  • Raghvendra Rohit and Sumanta Sarkar
    ''Reconstructing S-boxes from Cryptographic Tables with MILP''
    IACR Transactions on Symmetric Cryptology (ToSC) Volume 3, 2024.

  • Dilip Sau, Sumanta Sarkar, Dhiman Saha and Kalikinkar Mandal
    ''Know-Thy-Basis: Decomposing F26 for Lightweight S-box Implementation''
    IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2024(4).

  • Shih-Chun You, Markus G. Kuhn, Sumanta Sarkar and Feng Hao
    ''Low Trace-Count Template Attacks on 32-bit Implementations of ASCON AEAD''
    IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2023(4) pages 344–366.

  • Chinmoy Biswas, Ratna Dutta and Sumanta Sarkar
    ''An Efficient Post-Quantum Secure Dynamic EPID Signature Scheme using Lattices''
    Multimedia Tools and Applications, July 2023.

  • Ayineedi Venkateswarlu, Abhishek Kesarwani and Sumanta Sarkar
    ''On the Lower Bound of Cost of MDS Matrices''
    IACR Transactions on Symmetric Cryptology (ToSC) Volume 4, 2022.

  • Kalikinkar Mandal, Dhiman Saha, Sumanta Sarkar and Yosuke Todo
    ''Sycon: A New Milestone in Designing ASCON-like Permutations''
    Journal of Cryptographic Engineering, 2021.

  • Raghvendra Rohit, Kai Hu, Sumanta Sarkar and Siwei Sun
    ''Misuse-Free Key-Recovery and Distinguishing Attacks on 7-Round Ascon''
    IACR Transactions on Symmetric Cryptology (ToSC) Volume 1, 2021.

  • Anubhab Baksi, Dhiman Saha and Sumanta Sarkar
    ''To infect or not to infect: a critical analysis of infective countermeasures in fault attacks''
    Journal of Cryptographic Engineering, Volume 10(4), pages 355--374, 2020.

  • Anubhab Baksi, Sumanta Sarkar and Anupam Chattopadhyay
    ''A Coding Theoretic Approach towards Symmetrization in Reversible Circuit Synthesis''
    Journal of Multiple-Valued Logic and Soft Computing, Volume 35, pages 239--262, 2020

  • Sumanta Sarkar and Habeeb Syed,
    ''Lightweight Diffusion Layer: Importance of Toeplitz Matrices'',
    IACR Transactions on Symmetric Cryptology (ToSC) Volume 1, pages 95--113, 2016.

  • Kaushik Chakraborty, Sumanta Sarkar, Subhamoy Maitra, Bodhisatwa Mazumdar, Debdeep Mukhopadhyay, Emmanuel Prouff,
    ''Redefining the Transparency Order'',
    Design Codes and Cryptography, Volume 82(1-2), pages 95-115, 2017.

  • Srimanta Bhattacharya and Sumanta Sarkar,
    ''On Some Permutation Binomials and Trinomials Over F_{2^n}'',
    Design Codes and Cryptography, Volume 82(1-2), pages 149-160, 2017.

  • Pascale Charpin, Sihem Mesnager and Sumanta Sarkar,
    ''Involutions over the Galois field GF(2m)'',
    IEEE Transactions on Information Theory, Volume 62(4), pages 2266--2276, 2016.

  • Pascale Charpin, Sihem Mesnager and Sumanta Sarkar,
    ''Dickson Polynomials that are Involutions'',
    Contemporary Developments in Finite Fields and Their Applications, World Scientific Press 2016.

  • Pascale Charpin and Sumanta Sarkar,
    "Polynomials with Linear Structure and Maiorana-McFarland Construction",
    IEEE Transactions on Information Theory. Vol 57(6), pages 3796--3804, 2011.

  • Sugata Gangopadhyay, Sumanta Sarkar and Ruchi Telang,
    "On the Lower Bounds of the Second Order Nonlinearities of some Boolean Functions",
    Information Sciences, Vol 180, pages 266--273, Elsevier, 2010.

  • Deepak Kumar Dalai, Subhamoy Maitra and Sumanta Sarkar,
    "Results on Rotation Symmetric Boolean Functions",
    Discrete Mathematics, Vol 309 (8), pages 2398--2409, Elsevier, 2009.

  • Sugata Gangopadhyay, Deepmala Sharma, Sumanta Sarkar and Subhamoy Maitra.
    "On Affine (Non)Equivalence of Bent Functions".
    Computing, Vol 85, pages 37--55, Springer, 2009.

  • Sumanta Sarkar and Subhamoy Maitra,
    "Construction of Rotation Symmetric Boolean Functions with optimal Algebraic Immunity",
    Computacion y Sistemas, Vol 12 No. 3, pages 267--284, 2009.

  • Sumanta Sarkar and Subhamoy Maitra,
    "Efficient Search for Symmetric Boolean Functions under Constraints on Walsh Spectra Values",
    Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 68, pages 163--191, 2009.

  • Sumanta Sarkar and Subhamoy Maitra,
    "Idempotents in the Neighbourhood of Patterson-Wiedemann Functions having Walsh Spectra Zeros",
    Design Codes and Cryptography, Volume 49(1-3), pages 95--103, Springer, 2008.

  • Deepak Kumar Dalai, Subhamoy Maitra and Sumanta Sarkar,
    "Basic Theory in Construction of Boolean Functions with maximum possible Annihilator Immunity,
    Design Codes and Cryptography, Volume 40 (1), pages 41-58, Springer, 2006.

    Conference

  • Vishnu Asutosh Dasu, Sumanta Sarkar and Kalikinkar Mandal
    PROV-FL: Privacy-preserving Round Optimal Verifiable Federated Learning.
    In Proceedigns of ACM Workshop on Artificial Intelligence and Security (AISec) 2022.

  • Anubhab Baksi, Shivam Bhasin, Jakub Breier, Mustafa Khairallah, Thomas Peyrin, Sumanta Sarkar, Siang Meng Sim
    DEFAULT: Cipher Level Resistance Against Differential Fault Attack.
    In Proceedigns of Asiacrypt, Springer, Lecture Notes in Computer Science 13091, pages 124-156, 2021.

  • Sumanta Sarkar, Yu Sasaki and Siang Meng Sim
    On the Design of Bit Permutation Based Ciphers - The Interplay Among S-box, Bit Permutation and Key-addition
    In Proceedigns of IWSEC, Springer, Lecture Notes in Computer Science 12231, pages 3-22, 2020.

  • Sumanta Sarkar, Kalikinkar Mandal and Dhiman Saha
    On the Relationship between Resilient Boolean Functions and Linear Branch Number of S-boxes
    In Proceedigns of INDOCRYPT, Springer, Lecture Notes in Computer Science 11898, pages 361-374, 2019.

  • Vishnu Asutosh Dasu, Anubhab Baksi, Sumanta Sarkar and Anupam Chattopadhyay
    LIGHTER-R: Optimized Reversible Circuit Implementation For SBoxes
    In IEEE-SOCC 2019 poster.

  • Nitesh Emmadi, Lakshmi Padmaja Maddali and Sumanta Sarkar,
    "MaRSchain: A Manuscript Review System Based on Blockchain".
    In International Workshop on Future Perspective of Decentralized Applications.
    This has been included in the Hyperledger use case inventory.

  • Sumanta Sarkar and Habeeb Syed,
    ''Bounds on Differential and Linear Branch Number of Permutations''.
    In proceedings of ACISP, Springer, Lecture Notes in Computer Science 10946, pages 207--224, 2018.

  • Sumanta Sarkar, Habeeb Syed, Rajat Sadhukhan, Debdeep Mukhopadhyay,
    ''Lightweight Design Choices for LED-like Block Ciphers''.
    In proceedings of INDOCRYPT, Springer, Lecture Notes in Computer Science 10698, pages 267--281, 2017.

  • Sumanta Sarkar and Habeeb Syed,
    ''Analysis of Toeplitz MDS Matrices''.
    In proceedings (Part 2) of ACISP, Springer, Lecture Notes in Computer Science 10343, pages 3--18, 2017.

  • Sumanta Sarkar and Siang Meng Sim,
    ''A deeper understanding of the XOR count distribution in the context of lightweight cryptography'',
    In proceedings of AFRICACRYPT, Springer, Lecture Notes in Com- puter Science 9646, pages 1--18, 2016.

  • Sumanta Sarkar and Thomas Cusick
    ''Initial Results on the Rotation Symmetric Bent-Negabent Functions''
    International Workshop on Signal Design and its Applications in Communications (IWSDA) 2015

  • Pascale Charpin, Sihem Mesnager and Sumanta Sarkar
    ''Dickson Polynomials that are Involutions''
    Finite Fields and their Applications Fq12, 2015

  • Pascale Charpin, Sihem Mesnager and Sumanta Sarkar
    ''On involutions of finite fields''
    In IEEE International Symposium on Information Theory (ISIT), 2015.

  • Kaushik Chakraborty, Sumanta Sarkar, Subhamoy Maitra, Bodhisatwa Mazumdar, Debdeep Mukhopadhyay, Emmanuel Prouff
    ''Redefining the Transparency Order''
    Workshop for Coding and Cryptography (WCC), 2015.

  • Srimanta Bhattacharya and Sumanta Sarkar
    ''On Some Permutation Binomials and Trinomials Over F2n'',
    Workshop for Coding and Cryptography (WCC) 2015.

  • Sumanta Sarkar, Subhamoy Maitra and Kaushik Chakraborty
    ''Differential Power Analysis in Hamming Weight Model: How to choose among (Extended) Affine Equivalent S-boxes''
    INDOCRYPT, Springer LNCS 8885, pages 360-373, 2014.

  • Sumanta Sarkar, Reihaneh Safavi-Naini and Liang Feng Zhang
    ''RAFR: Remote Assessment of File Redundancy'',
    ASIACCS-SCC, pages 27-32, 2013.

  • Sumanta Sarkar and Reihaneh Safavi-Naini
    ''Proofs of Retrievability via Fountain Code'',
    Foundation and Practice of Security, Springer LNCS 7743, pages 18-32, 2012.

  • Sumanta Sarkar, Srimanta Bhattacharya, Ayca Cesmelioglu,
    "On Some Permutation Binomials of the Form x(2n-1)/k+1 + ax over F2n : Existence and Count",
    International Workshop on the Arithmetic of Finite Fields, WAIFI 2012, Springer LNCS 7369, pages 236-246, 2012.

  • Sumanta Sarkar,
    "Characterizing Negabent Boolean Functions over Finite Fields",
    Sequence and Their Applications, SETA, Springer LNCS 7280, pages 77-88, 2012.

  • Vincent Herbert and Sumanta Sarkar,
    "On the Triple-Error-Correcting Cyclic Codes with Zero Set {1, 2i+1, 2j+1}",
    IMACC, Springer LNCS 7089, pages 79-96, 2011.

  • Pascale Charpin and Sumanta Sarkar,
    "Polynomials with Linear Structure and Maiorana-McFarland Construction",
    In proceedings of IEEE International Symposium on Information Theory (ISIT), Austin, Texas June 13-18, 2010.

  • Sumanta Sarkar,
    "On the symmetric negabent Boolean functions",
    INDOCRYPT, Springer, LNCS 5922, pages 136-143, 2009.

  • Sumanta Sarkar and Sugata Gangopadhyay,
    "On the Second Order Nonlinearity of a Cubic Maiorana-McFarland Bent Function",
    Finite Fields and their Applications, Fq 9, Dublin, Ireland, July 13 -- 17, 2009.

  • Sugata Gangopadhyay, Deepmala Sharma, Sumanta Sarkar and Subhamoy Maitra.
    "On Affine (Non)Equivalence of Bent Functions".
    In 8th Central European Conference on Cryptography, pages 13--15, Graz, Austria, July 2-4, 2008.

  • Sumanta Sarkar and Subhamoy Maitra,
    "Construction of rotation symmetric Boolean functions on odd number of variables with maximum algebraic immunity",
    Applied Algebra, Algebraic Algorithms, and Error Correcting Codes (AAECC-17),
    Springer, LNCS 4851, pages 271-280, 2007

  • Subhamoy Maitra, Sumanta Sarkar and Deepak K. Dalai.
    "On Dihedral Group Invariant Boolean Functions",
    International Workshop on Boolean Functions: Cryptography and Applications, 2007.

  • Sumanta Sarkar and Subhamoy Maitra,
    "Idempotents in the Neighbourhood of Patterson-Wiedemann Functions having Walsh Spectra Zeros",
    International Workshop on Coding and Cryptogrpahy, France, 2007.

  • Selcuk Kavut, Subhamoy Maitra, Sumanta Sarkar and Melek D. Yucel,
    "Enumeration of 9-variable Rotation Symmetric Boolean Functions having Nonlinearity > 240",
    Indocrypt 2006, Springer-Verlag, LNCS 4329: pages 266-279.


    Patents:

  • SYSTEM AND METHOD FOR BLOCKCHAIN BASED DECENTRALIZED STORAGE WITH DYNAMIC DATA OPERATIONS. Granted by US and EU.
  • METHOD AND SYSTEM FOR SECURE IOT DEVICE ONBOARDING USING A BLOCKCHAIN NETWORK. Granted by US.