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<html>
<title>
SUMANTA SARKAR HOME PAGE
</title>
<head>
<style>
sup {
vertical-align: super;
font-size: small;
}
</style>
<style>
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vertical-align: sub;
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<!--
<font color = "blue" font size = +2>
<marquee behavior = "alternate">
WELCOME TO MY HOME PAGE
</marquee>
</font>
<br>
-->
<!--
<center>
<font color = "red" font size = +3>
SUMANTA SARKAR</font>
</font>
</center>
-->
</head>
<br> <br>
<link rel="SHORTCUT ICON" href="ami-camb.jpg">
<body bgcolor = "ccffff">
<!-- <div>
<a href="http://www.isical.ac.in/~sumanta_r/photograph.html" >
<font size = +2>Photo Gallery</font></a>
</div>
-->
<!-- <center>
<img src = "ami-camb.jpg" height = "365" width = "482">
<br><br><br>
</center>
-->
<table border=0 cellpadding=5 cellspacing=1 width = 100%>
<tr align=center>
<td>
<a class="texthover" title="This is younger me!">
<IMG border=0 align=middle SRC="ami-camb.jpg" height = "365" width = "482"/>
</a>
</td>
<td VALIGN=middle align=left>
<ADDRESS><H3>
<font color = "red" font size = +3>
SUMANTA SARKAR</font>
</font><BR><BR>
Assistant Professor <br>
University of Warwick, United Kingdom <br><br>
sumanta (dot) sarkar (at) gmail (dot) com <br />
sumanta (dot) sarkar (at) warwick (dot) ac (dot) uk <br />
<br> <br>
<br></ADDRESS></td></tr>
</table>
<hr>
<font color = "red" font size = +2>
<p><a href="#about"> About Me </a>    
<a href="#news"> News </a>    
<a href="#workshop"> Workshop Organization</a>    
<a href="#grants"> Grants</a>    
<a href="#talks"> Invited Talks</a>    
<a href="#pc"> Program Committee</a>    
<a href="#publications"> Publications </a>    
<a href="#patents"> Patents </a>    
</font>
<br>
</p>
<hr>
<font color = "red" font size = +2>
<b id = "about">About Me :</b></font>
<hr>
<p>
I am an Assistant Professor at <a href="https://warwick.ac.uk/" target="/b" ><font color = "000ff"> University of Warwick</font></a>. Previously I was a Research Scientist at
<a href="https://www.tcs.com/research-and-innovation" target="/b" ><font color = "0000ff">
TCS Innovation Labs</font></a>, Hyderabad.
<i--
I am also an Adjunct Assistant Professor at C R Rao Advanced Institute of Mathematics, Statistics and Computer Science (AIMSCS).
--->
Prior to this I was a visiting scientist at <a href="http://www.isical.ac.in" target="/b" ><font color = "0000ff">
Indian Statistical Institute, Kolkata</font></a>, 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 <a href="http://www-rocq.inria.fr/secret/index.php?lg=en" target="/b" >SECRET</a>,
<a href="http://www-rocq.inria.fr/" target="/b" >
INRIA Paris-Rocquencourt</a>
followed by being a post doctoral fellow at
the <a href="http://cpsc.ucalgary.ca" target="/b" > Department of Computer Science
</a>, <a href="http://ucalgary.ca" target="/b" >University of Calgary</a>.</a>
</p>
<br>
<hr>
<font color = "blue" font size = +2>
<b id = "news">NEWS:</b></font>
<hr>
<br>
<li>
<b> Paper accepted to NDSS 2025 </b> <br> <br>
<li>
<b> Paper accepted to FSE 2025 </b> <br> <br>
<br>
<br>
<hr>
<font color = "red" font size = +2>
<b id = "workshop">Workshop Organization:</b></font>
<hr>
<br>
Indian Workshop on Post-Quantum Cryptography <a href="https://sites.google.com/view/iwpqc2020/home" target="/b"> (IWPQC 2020)
</a> : November 17th and 18th, 2020
<br>
<br>
<hr>
<font color = "red" font size = +2>
<b>My Interests :</b></font>
<hr>
<p>
Post-quantum Cryptography<br>
Privacy Preserving Machine Learning <br>
Blockchain <br>
IoT security
</p>
<br>
<hr>
<font color = "red" font size = +2>
<b id = "grants">Grants:</b></font>
<hr>
<li>
EPSRC Overseas Travel Grant EP/X036669/1: awarded £15,425 for the project <b> Construction of Lattice based Post-quantum Signature Schemes</b>. <br> <br>
<hr>
<font color = "red" font size = +2>
<b id = "talks">Invited Talks:</b></font>
<hr>
University of New Brunswick, Canada <br>
Warwick Manufacturing Group, guest lecture <br>
Ashoka University <br>
Exeter University <br>
Information Security Group; Royal Holloway, University of London <br>
Chinese Academy of Science<br>
ABB, Bangalore<br>
Security of Critical Infrastructure Workshop, SETS, Chennai <br>
Design and Security Workshop, IIITDM, Jabalpur <br>
Conference on Ramanujan<br>
ASK, Changsha, China <br>
<br>
<br>
</p>
<hr>
<font color = "red" font size = +2 id = "pc">
<b >Program Committee:</b></font>
<hr>
INDOCRPYT 2024, SETA 2024, WCC 2024, INDOCRYPT 2019, SETA 2018, SETA 2017, SPACE 2012 and SPACE 2013.
<br>
<br>
</p>
<hr>
<font color = "red" font size = +2>
<b id = "publications">Publications :</b></font>
<hr>
<!--
<p>
<ul>
<b>Manuscript</b><br><br>
<li>
Prasanna R Mishra, Sumanta Sarkar and Indivar Gupta<br>
<b>''An Efficient Algorithm for Checking the Degree of an S-box''</b><br>
manuscript, 2014.<br><br>
-->
<!--
<li>
Sumanta Sarkar,
<b>''Some Results on Bent-Negabent Boolean Functions
over Finite Fields''</b><br>
manuscript, 2014.<br><br>
<li>
Sumanta Sarkar and Thomas Cusick
<br>
<b>''On the Negabent Functions in
the subclass of Rotation Symmetric Boolean Functions''</b><br>
manuscript, 2013.<br><br>
</p>
--->
<p>
<b>Journal</b><br><br>
<li>
Aydin Abadi, Vishnu Asutosh Dasu and Sumanta Sarkar <br>
<b>''Privacy-Preserving Data Deduplication for Enhancing Federated
Learning of Language Models''
</b>
<br>
Network and Distributed System Security (NDSS) Symposium, 2025.
<br>
<br>
<li>
Raghvendra Rohit and Sumanta Sarkar<br>
<b>''Reconstructing S-boxes from Cryptographic Tables with MILP''
</b>
<br>
IACR Transactions on Symmetric Cryptology (ToSC) Volume 3, 2024.
<br>
<br>
<li>
Dilip Sau, Sumanta Sarkar, Dhiman Saha and Kalikinkar Mandal <br>
<b>''Know-Thy-Basis: Decomposing F<sub>2<sup>6</sup></sub> for Lightweight S-box Implementation''
</b>
<br>
IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2024(4).
<br>
<br>
<li>
Shih-Chun You, Markus G. Kuhn, Sumanta Sarkar and Feng Hao <br>
<b>''Low Trace-Count Template Attacks on 32-bit Implementations of ASCON AEAD''
</b>
<br>
IACR Transactions on Cryptographic Hardware and Embedded Systems (TCHES), 2023(4) pages 344–366.
<br>
<br>
<li>
Chinmoy Biswas, Ratna Dutta and Sumanta Sarkar <br>
<b>''An Efficient Post-Quantum Secure Dynamic EPID Signature Scheme using Lattices''
</b>
<br>
Multimedia Tools and Applications, July 2023.
<br>
<br>
<li>
Ayineedi Venkateswarlu, Abhishek Kesarwani and Sumanta Sarkar <br>
<b>''On the Lower Bound of Cost of MDS Matrices''
</b>
<br>
IACR Transactions on Symmetric Cryptology (ToSC) Volume 4, 2022.
<br>
<br>
<li>
Kalikinkar Mandal, Dhiman Saha, Sumanta Sarkar and Yosuke Todo
<br>
<b>
''Sycon: A New Milestone in Designing ASCON-like Permutations''
</b>
<br>
Journal of Cryptographic Engineering, 2021.
<br>
<br>
<li>
Raghvendra Rohit, Kai Hu, Sumanta Sarkar and Siwei Sun <br>
<b>''Misuse-Free Key-Recovery and Distinguishing Attacks on 7-Round Ascon''
</b>
<br>
IACR Transactions on Symmetric Cryptology (ToSC) Volume 1, 2021.
<br>
<br>
<li>
Anubhab Baksi, Dhiman Saha and Sumanta Sarkar <br>
<b> ''To infect or not to infect: a critical analysis of infective countermeasures in fault attacks''</b>
<br
Journal of Multiple-Valued Logic and Soft Computing, Volume 35, pages 239--262, 2020>
Journal of Cryptographic Engineering, Volume 10(4), pages 355--374, 2020.
<br>
<br>
<li>
Anubhab Baksi, Sumanta Sarkar and Anupam Chattopadhyay <br>
<b> ''A Coding Theoretic Approach towards Symmetrization in Reversible Circuit Synthesis''
</b>
<br>
Journal of Multiple-Valued Logic and Soft Computing, Volume 35, pages 239--262, 2020
<br>
<br>
<li>
Sumanta Sarkar and Habeeb Syed,<br>
<b>''Lightweight Diffusion Layer: Importance of Toeplitz Matrices'',</b>
<br>
IACR Transactions on Symmetric Cryptology (ToSC) Volume 1, pages 95--113, 2016.
<br>
<br>
<li>
Kaushik Chakraborty, Sumanta Sarkar, Subhamoy Maitra,
Bodhisatwa Mazumdar, Debdeep Mukhopadhyay, Emmanuel Prouff,
<br>
<b>
''Redefining the Transparency Order'',</b>
<br>
Design Codes and Cryptography, Volume 82(1-2), pages 95-115, 2017.
<br>
<br>
<li>
Srimanta Bhattacharya and Sumanta Sarkar,
<br>
<b>
''On Some Permutation Binomials and Trinomials Over F_{2^n}'',
</b>
<br>
Design Codes and Cryptography, Volume 82(1-2), pages 149-160, 2017.
<br>
<br>
<li>
Pascale Charpin, Sihem Mesnager and Sumanta Sarkar,
<br>
<b>
''Involutions over the Galois field GF(2m)'',
</b>
<br>
IEEE Transactions on Information Theory, Volume 62(4), pages 2266--2276, 2016.
<br>
<br>
<li>
Pascale Charpin, Sihem Mesnager and Sumanta Sarkar,
<b>
<br>
''Dickson Polynomials that are Involutions'',
</b>
<br>
Contemporary Developments in Finite Fields and Their Applications, World Scientific Press 2016.
<br>
<br>
<li>
Pascale Charpin and Sumanta Sarkar,<br>
<b>"Polynomials with Linear Structure and Maiorana-McFarland Construction",</b>
<br>
IEEE Transactions on Information Theory. Vol 57(6), pages 3796--3804, 2011.
<br>
<br>
<li>
Sugata Gangopadhyay, Sumanta Sarkar and Ruchi Telang, <br>
<b>"On the Lower Bounds of the Second Order Nonlinearities of some Boolean Functions",</b> <br>
Information Sciences, Vol 180, pages 266--273, Elsevier, 2010.<br><br>
<li>
Deepak Kumar Dalai, Subhamoy Maitra and Sumanta Sarkar,<br>
<b>"Results on Rotation Symmetric Boolean Functions",</b><br>
Discrete Mathematics, Vol 309 (8), pages 2398--2409, Elsevier, 2009.<br><br>
<li>
Sugata Gangopadhyay, Deepmala Sharma, Sumanta Sarkar and Subhamoy Maitra.<br>
<b>"On Affine (Non)Equivalence of Bent Functions".</b> <br>
Computing, Vol 85, pages 37--55, Springer, 2009. <br><br>
<li>
Sumanta Sarkar and Subhamoy Maitra,<br>
<b>"Construction of Rotation Symmetric Boolean Functions with optimal Algebraic
Immunity",</b><br>
Computacion y Sistemas, Vol 12 No. 3,
pages 267--284, 2009.<br><br>
<li> Sumanta Sarkar and Subhamoy Maitra, <br>
<b>"Efficient Search for Symmetric Boolean Functions under Constraints on Walsh Spectra Values",</b> <br>
Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 68,
pages 163--191, 2009.<br><br>
<li>
Sumanta Sarkar and Subhamoy Maitra,<br>
<b>"Idempotents in the Neighbourhood of Patterson-Wiedemann Functions having
Walsh Spectra Zeros",</b><br>
Design Codes and Cryptography, Volume 49(1-3), pages 95--103,
Springer, 2008.<br><br>
<li> Deepak Kumar Dalai, Subhamoy Maitra and Sumanta Sarkar,<br>
<b>"Basic Theory in Construction of Boolean Functions with maximum possible Annihilator Immunity,</b>
<br>
Design Codes and Cryptography, Volume 40 (1), pages 41-58, Springer,
2006. <br><br>
</p>
<p>
<b>Conference</b><br><br>
<li>
Vishnu Asutosh Dasu, Sumanta Sarkar and Kalikinkar Mandal </b>
<br>
<b>
PROV-FL: Privacy-preserving Round Optimal Verifiable Federated Learning.
</b>
<br>
In Proceedigns of ACM Workshop on Artificial Intelligence and Security (AISec) 2022.
<br>
<br>
<li>
Anubhab Baksi, Shivam Bhasin, Jakub Breier, Mustafa Khairallah, Thomas Peyrin, Sumanta Sarkar, Siang Meng Sim </b>
<br>
<b>
DEFAULT: Cipher Level Resistance Against Differential Fault Attack.
</b>
<br>
In Proceedigns of Asiacrypt, Springer, Lecture Notes in Computer Science 13091, pages 124-156, 2021.
<br>
<br>
<li>
Sumanta Sarkar, Yu Sasaki and Siang Meng Sim </b>
<br>
<b>
On the Design of Bit Permutation Based Ciphers - The Interplay Among S-box, Bit Permutation and Key-addition
</b>
<br>
In Proceedigns of IWSEC, Springer, Lecture Notes in Computer Science 12231, pages 3-22, 2020.
<br>
<br>
<li>
Sumanta Sarkar, Kalikinkar Mandal and Dhiman Saha </b>
<br>
<b>
On the Relationship between Resilient Boolean Functions and Linear Branch Number of S-boxes
</b>
<br>
In Proceedigns of INDOCRYPT, Springer, Lecture Notes in Computer Science 11898, pages 361-374, 2019.
<br>
<br>
<li>
Vishnu Asutosh Dasu, Anubhab Baksi, Sumanta Sarkar and Anupam Chattopadhyay </b>
<br>
<b>
LIGHTER-R: Optimized Reversible Circuit Implementation For SBoxes
</b>
<br>
In IEEE-SOCC 2019 poster.
<br>
<br>
<li>
Nitesh Emmadi, Lakshmi Padmaja Maddali and Sumanta Sarkar,</b>
<br>
<b>
"MaRSchain: A Manuscript Review System Based on Blockchain".
</b>
<br>
In International Workshop on Future Perspective of Decentralized Applications. <br>
This has been included in the Hyperledger use case inventory.
<br>
<br>
<li>
Sumanta Sarkar and Habeeb Syed,</b>
<br>
<b>
''Bounds on Differential and Linear Branch Number of Permutations''.
</b>
<br>
In proceedings of ACISP, Springer, Lecture Notes in Computer Science 10946, pages 207--224, 2018.
<br>
<br>
<li>
Sumanta Sarkar, Habeeb Syed, Rajat Sadhukhan, Debdeep Mukhopadhyay,
<br>
<b>
''Lightweight Design Choices for LED-like Block Ciphers''.
</b>
<br>
In proceedings of INDOCRYPT, Springer, Lecture Notes in Computer Science 10698, pages 267--281, 2017.
<br>
<br>
<li>
Sumanta Sarkar and Habeeb Syed,</b>
<br>
<b>
''Analysis of Toeplitz MDS Matrices''.
</b>
<br>
In proceedings (Part 2) of ACISP, Springer, Lecture Notes in Computer Science 10343, pages 3--18, 2017.
<br>
<br>
<li>
Sumanta Sarkar and Siang Meng Sim,
<br>
<b>
''A deeper understanding of the XOR count distribution in the context of lightweight cryptography'',
</b>
<br>
In proceedings of AFRICACRYPT, Springer, Lecture Notes in Com- puter Science 9646, pages 1--18, 2016.
<br>
<br>
<li>
Sumanta Sarkar and Thomas Cusick<br>
<b>''Initial Results on the Rotation Symmetric Bent-Negabent Functions''</b><br>
International Workshop on Signal Design and its Applications
in Communications (IWSDA) 2015
<br><br>
<li>
Pascale Charpin, Sihem Mesnager and Sumanta Sarkar<br>
<b>''Dickson Polynomials that are Involutions''</b><br>
Finite Fields and their Applications Fq12, 2015
<br><br>
<li>
Pascale Charpin, Sihem Mesnager and Sumanta Sarkar<br>
<b>''On involutions of finite fields''</b><br>
In IEEE International Symposium on Information Theory
(ISIT), 2015.
<br><br>
<li>
Kaushik Chakraborty, Sumanta Sarkar, Subhamoy Maitra, Bodhisatwa
Mazumdar, Debdeep Mukhopadhyay, Emmanuel Prouff<br>
<b>''Redefining the Transparency Order''</b><br>
Workshop for Coding and Cryptography (WCC), 2015.
<br><br>
<li>
Srimanta Bhattacharya and Sumanta Sarkar <br>
<b>''On Some Permutation Binomials and Trinomials Over
F<sub>2<sup>n</sup></sub>''</b>, <br>
Workshop for Coding and Cryptography (WCC) 2015.
<br><br>
<li>
Sumanta Sarkar, Subhamoy Maitra and Kaushik Chakraborty<br>
<b>''Differential Power Analysis in Hamming Weight Model: How to choose
among (Extended) Affine Equivalent S-boxes''</b><br>
INDOCRYPT, Springer LNCS 8885, pages 360-373, 2014.
<br><br>
<li>
Sumanta Sarkar, Reihaneh Safavi-Naini and Liang Feng Zhang<br>
<b> ''RAFR: Remote Assessment of File Redundancy'',
</b><br>
ASIACCS-SCC, pages 27-32, 2013.
<br><br>
<li>
Sumanta Sarkar and Reihaneh Safavi-Naini <br>
<b> ''Proofs of Retrievability via Fountain Code'',
</b><br>
Foundation and Practice of Security,
Springer LNCS 7743, pages 18-32, 2012.
<br><br>
<li>
Sumanta Sarkar, Srimanta Bhattacharya, Ayca Cesmelioglu, <br>
<b> "On Some Permutation Binomials of the Form x<sup>(2<sup>n</sup>-1)/k+1
</sup> + ax
over F<sub>2<sup>n</sup></sub> : Existence and Count",
</b><br>
International Workshop on the Arithmetic of Finite Fields, WAIFI 2012,
Springer LNCS 7369, pages 236-246, 2012.
<br><br>
<li>
Sumanta Sarkar, <br>
<b> "Characterizing Negabent Boolean Functions over Finite Fields",
</b><br>
Sequence and Their Applications, SETA, Springer LNCS 7280, pages 77-88, 2012.
<br><br>
<li>
Vincent Herbert and Sumanta Sarkar, <br>
<b> "On the Triple-Error-Correcting Cyclic Codes with Zero
Set {1, 2<sup>i</sup>+1, 2<sup>j</sup>+1}",</b><br>
IMACC, Springer LNCS 7089, pages 79-96, 2011.
<br><br>
<li>
Pascale Charpin and Sumanta Sarkar,<br>
<b>"Polynomials with Linear Structure and Maiorana-McFarland Construction",</b><br>
In proceedings of IEEE International Symposium on Information Theory
(ISIT), Austin, Texas June 13-18, 2010.
<br><br>
<li>
Sumanta Sarkar,<br>
<b>"On the symmetric negabent Boolean functions",</b><br>
INDOCRYPT, Springer, LNCS 5922, pages 136-143, 2009.
<br><br>
<li>
Sumanta Sarkar and Sugata Gangopadhyay,<br>
<b>"On the Second Order Nonlinearity of a Cubic Maiorana-McFarland
Bent Function",</b><br>
Finite Fields and their Applications, Fq 9, Dublin, Ireland, July 13 -- 17, 2009. <br><br>
<li>
Sugata Gangopadhyay, Deepmala Sharma, Sumanta Sarkar and Subhamoy Maitra.<br>
<b>"On Affine (Non)Equivalence of Bent Functions".</b> <br>
In 8th Central European Conference on Cryptography,
pages 13--15, Graz, Austria, July 2-4, 2008.<br><br>
<li> Sumanta Sarkar and Subhamoy Maitra,<br>
<b>"Construction of rotation symmetric Boolean functions on odd number of
variables with maximum algebraic immunity",</b>
<br>
Applied Algebra, Algebraic Algorithms, and Error Correcting Codes
(AAECC-17),<br>
Springer, LNCS 4851, pages 271-280, 2007<br><br>
<li> Subhamoy Maitra, Sumanta Sarkar and Deepak K. Dalai.<br>
<b>"On Dihedral Group Invariant Boolean Functions",</b><br>
International Workshop on Boolean Functions:
Cryptography and Applications, 2007.<br><br>
<li> Sumanta Sarkar and Subhamoy Maitra,<br>
<b>"Idempotents in the Neighbourhood of Patterson-Wiedemann Functions having Walsh Spectra Zeros",</b>
<br>
International Workshop on Coding and Cryptogrpahy, France, 2007. <br><br>
<li> Selcuk Kavut, Subhamoy Maitra, Sumanta Sarkar and Melek D. Yucel, <br>
<b>"Enumeration of 9-variable Rotation Symmetric Boolean Functions having Nonlinearity > 240",</b> <br>
Indocrypt 2006, Springer-Verlag, LNCS 4329: pages 266-279.<br><br>
<br>
</p>
<hr>
<font color = "red" font size = +2>
<b id = "patents">Patents:</b></font>
<hr>
<p>
<li> <b>SYSTEM AND METHOD FOR BLOCKCHAIN BASED DECENTRALIZED STORAGE WITH DYNAMIC DATA OPERATIONS.</b>
Granted by US and EU. <br>
<li>
<b> METHOD AND SYSTEM FOR SECURE IOT DEVICE ONBOARDING USING A BLOCKCHAIN NETWORK. </b> Granted by US.
</p>
<br>
</ul>
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