Angshuman Karmakar

406, Rajeev Motwani Building,

Department of CSE, IIT Kanpur, Kalyanpur

Uttar Pradesh, India, 208016

Hello, I am Angshuman. I am an Assistant Professor in the Department of Computer science and engineering at the Indian Institute of Technology Kanpur, India. My research interest lies mostly on Post-Quantum Cryptography(PQC) and Computation On Encrypted Data (COED) which are currently shaping the landscape of cryptography and computer security. My work spans a wide spectrum of these fields such as developing theoretical instruments for efficient scheme design, designing algorithms for efficient implementation, discovering side-channel, fault, and microarchitectural attacks, and proposing countermeasures. I have a vast collaboration network and I work with researchers and engineers from all over the world looking for answers to these extremely interesting and hard questions.

I received the Erasmus Mundus fellowship for my doctoral studies at Katholieke Universiteit Leuven(KU Leuven), Belgium. I got my Ph.D. working under Prof. Ingrid Verbauwhede on the design and implementation aspects of post-quantum cryptography in the COSIC research group. I then received the prestigious FWO(Fonds voor Wetenschappelijk Onderzoek – Vlaanderen) fellowship for my post-doctoral study at KU Leuven.

I am currently looking for motivated graduate students and postdocs to work with me on the problems mentioned above. Contact me if you are interested in exploring this exciting world of cryptography and computer security with me.

Website work in progress.

news

Oct 10, 2024	Our paper QuripfeNet: Quantum-Resistant IPFE-based Neural Network got accepted in IEEE Transactions on Emerging Topics in Computing (TETC) 2024
Sep 10, 2024	Our paper Scabbard: An Exploratory Study on Hardware Aware Design Choices of LWR-based KEMs got accepted in ACM Transactions on Embedded Computing Systems (TECS) 2024
Aug 30, 2024	Our paper ZKFault: Fault attack analysis on zero-knowledge based post-quantum digital signature schemes got accepted in IACR Advances in Cryptology – ASIACRYPT, 2024 (ASIACRYPT) 2024
Apr 1, 2024	Our paper Efficient TMVP-based Polynomial Convolution on GPU for Post-quantum Cryptography Targeting IoT Applications got accepted in IEEE Internet Of Things Journal (IOTJ) 2024
Feb 20, 2024	Our paper Carry Your Fault: A Fault Propagation Attack on Side-Channel Protected LWE-based KEM got accepted in IACR Transactions in Cryptographic Hardware and Embedded Systems (TCHES) 2024

selected publications

ASIACRYPT’24

ZKFault: Fault attack analysis on zero-knowledge based post-quantum digital signature schemes

Puja Mondal, Supriya Adhikary, Suparna Kundu, and Angshuman Karmakar

Advances in Cryptology – ASIACRYPT, 2024

Bib HTML PDF

@article{DBLP:journals/iacr/MondalAKK24,
  author = {Mondal, Puja and Adhikary, Supriya and Kundu, Suparna and Karmakar, Angshuman},
  title = {ZKFault: Fault attack analysis on zero-knowledge based post-quantum
                    digital signature schemes},
  journal = {Advances in Cryptology – ASIACRYPT},
  pages = {1422},
  year = {2024},
}

TECS

Scabbard: An Exploratory Study on Hardware Aware Design Choices of Learning with Rounding-based Key Encapsulation Mechanisms

Suparna Kundu, Quinten Norga, Angshuman Karmakar, Shreya Gangopadhyay, Jose Maria Bermudo Mera, and 1 more author

ACM Transactions on Embedded Computing Systems, Nov 2024

Bib HTML PDF

@article{10.1145/3696208,
  author = {Kundu, Suparna and Norga, Quinten and Karmakar, Angshuman and Gangopadhyay, Shreya and Bermudo Mera, Jose Maria and Verbauwhede, Ingrid},
  title = {Scabbard: An Exploratory Study on Hardware Aware Design Choices of Learning with Rounding-based Key Encapsulation Mechanisms},
  year = {2024},
  issue_date = {January 2025},
  publisher = {Association for Computing Machinery},
  address = {New York, NY, USA},
  volume = {24},
  number = {1},
  issn = {1539-9087},
  doi = {10.1145/3696208},
  journal = {ACM Transactions on Embedded Computing Systems},
  month = nov,
  articleno = {10},
  numpages = {40},
  keywords = {Post-quantum cryptography, lattice-based cryptography, learning with rounding, key-encapsulation mechanism, software implementations, AVX2, Cortex-M4, hardware implementations, FPGA},
}

TCHES’24

Carry Your Fault: A Fault Propagation Attack on Side-Channel Protected LWE-based KEM

Suparna Kundu, Siddhartha Chowdhury, Sayandeep Saha, Angshuman Karmakar, Debdeep Mukhopadhyay, and 1 more author

IACR Cryptol. ePrint Arch., Nov 2024

Bib HTML PDF

@article{DBLP:journals/iacr/KunduCSKMV23,
  author = {Kundu, Suparna and Chowdhury, Siddhartha and Saha, Sayandeep and Karmakar, Angshuman and Mukhopadhyay, Debdeep and Verbauwhede, Ingrid},
  title = {Carry Your Fault: {A} Fault Propagation Attack on Side-Channel Protected
                    LWE-based {KEM}},
  journal = {{IACR} Cryptol. ePrint Arch.},
  pages = {1674},
  year = {2024},
  timestamp = {Thu, 09 Nov 2023 00:00:00 +0100},
  biburl = {https://dblp.org/rec/journals/iacr/KunduCSKMV23.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
}

ACNS’24

A practical key-recovery attack on LWE-based key- encapsulation mechanism schemes using Rowhammer

Puja Mondal, Suparna Kundu, Sarani Bhattacharya, Angshuman Karmakar, and Ingrid Verbauwhede

Nov 2024

Bib HTML PDF

@misc{cryptoeprint:2023/1731,
  author = {Mondal, Puja and Kundu, Suparna and Bhattacharya, Sarani and Karmakar, Angshuman and Verbauwhede, Ingrid},
  title = {{A practical key-recovery attack on LWE-based key- encapsulation mechanism schemes using Rowhammer}},
  howpublished = {22nd International Conference on Applied Cryptography and Network Security (ACNS), Abu Dhabi, UAE, 5-8 March, 2024},
  year = {2024},
}

JSSC

A 334 \(μ\)W 0.158 mm\(^\mbox2\) ASIC for Post-Quantum Key-Encapsulation Mechanism Saber With Low-Latency Striding Toom-Cook Multiplication

Archisman Ghosh, Jose Maria Bermudo Mera, Angshuman Karmakar, Debayan Das, Santosh Ghosh, and 2 more authors

IEEE Journal of Solid State Circuits, Nov 2023

Bib HTML PDF

@article{DBLP:journals/jssc/GhoshMKDGVS23,
  author = {Ghosh, Archisman and Mera, Jose Maria Bermudo and Karmakar, Angshuman and Das, Debayan and Ghosh, Santosh and Verbauwhede, Ingrid and Sen, Shreyas},
  title = {A 334 {\(\mu\)}W 0.158 mm\({}^{\mbox{2}}\) {ASIC} for Post-Quantum
                    Key-Encapsulation Mechanism Saber With Low-Latency Striding Toom-Cook
                    Multiplication},
  journal = {{IEEE} Journal of Solid State Circuits},
  volume = {58},
  number = {8},
  pages = {2383--2398},
  year = {2023},
  doi = {10.1109/JSSC.2023.3253425},
  timestamp = {Sat, 05 Aug 2023 01:00:00 +0200},
  biburl = {https://dblp.org/rec/journals/jssc/GhoshMKDGVS23.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org},
}

TECS
Side-Channel Analysis of Lattice-Based Post-Quantum Cryptography: Exploiting Polynomial Multiplication

Catinca Mujdei, Lennert Wouters, Angshuman Karmakar, Arthur Beckers, Jose Maria Bermudo Mera, and 1 more author

ACM Transactions on Embedded Computing Systems, Nov 2022

Just Accepted

Abs Bib HTML PDF

Polynomial multiplication algorithms such as Toom-Cook and the Number Theoretic Transform are fundamental building blocks for lattice-based post-quantum cryptography. In this work we present correlation power analysis based side-channel analysis methodologies targeting every polynomial multiplication strategy for all lattice-based post-quantum key encapsulation mechanisms in the final round of the NIST post-quantum standardization procedure. We perform practical experiments on real side-channel measurements demonstrating that our method allows to extract the secret key from all lattice-based post-quantum key encapsulation mechanisms. Our analysis shows that the used polynomial multiplication strategy can significantly impact the time complexity of the attack.
@article{10.1145/3569420, author = {Mujdei, Catinca and Wouters, Lennert and Karmakar, Angshuman and Beckers, Arthur and Mera, Jose Maria Bermudo and Verbauwhede, Ingrid}, title = {Side-Channel Analysis of Lattice-Based Post-Quantum Cryptography: Exploiting Polynomial Multiplication}, year = {2022}, publisher = {Association for Computing Machinery}, address = {New York, NY, USA}, issn = {1539-9087}, url = {https://doi.org/10.1145/3569420}, doi = {10.1145/3569420}, note = {Just Accepted}, journal = {ACM Transactions on Embedded Computing Systems}, month = nov, keywords = {number-theoretic transform, Toom-Cook multiplication, post-quantum cryptography, side-channel analysis}, }