NIST PQC seminar #16 (Tuesday 2024-July-02, 10am EDT)
Bros, Maxime P. (IntlAssoc)
Dear all,
I hope you're doing well.
I'm glad to announce NIST PQC Seminars # 16 which will happen at 10 a.m. US EDT (Eastern Daylight Time, Washington D.C., UTC-4) on Tuesday July 2nd, 2024. Please find more details below.
Please find the Zoom invitation below this email, alternatively you can click the talk's name on the NIST PQC Seminar website:
https://csrc.nist.gov/projects/post-quantum-cryptography/workshops-and-timeline/pqc-seminars
Be careful, the links / meeting ID or passcode sometimes change and sometimes remain the same from one seminar to another, so always double check on the website before connecting.
Sincerely,
Dr. Maxime Bros
NIST PQC Team
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### Title ###
Constructions for digital signatures Part III: Threshold-Computation-in-the-Head
### Abstract ###
The MPC-in-the-Head (MPCitH) paradigm is increasingly popular in building zero-knowledge proofs and post-quantum signatures, leveraging techniques from secure multi-party computation. Notably, this paradigm has been employed in 9 out of the 40 candidates selected for the first round of the recent NIST call for additional post-quantum signatures. In this talk, we will introduce the Threshold-Computation-in-the-Head (TCitH) framework, which utilizes threshold secret sharing —specifically, Shamir’s secret sharing— to enhance MPCitH-based proof systems and signature schemes. We will explore its Merkle tree and GGM tree variants, highlighting how it leverages the multiplication homomorphism and packing capabilities of Shamir’s secret sharing. We will discuss the strong connections between this framework and other proof systems (namely VOLE-in-the-Head and Ligero). Additionally, we will see how this framework improves the MPCitH-based NIST candidates and how it can be used in other applications. In particular, we will present a generic construction of a post-quantum ring signature that achieves a substantial improvement over the state of the art.
### Speaker and Affiliation ###
Dr. Matthieu Rivain, CryptoExperts, France
### Mini bio ###
Matthieu is a researcher and entrepreneur, currently CEO of CryptoExperts, a research and service company specializing in cryptography. He joined CryptoExperts in 2010 after completing an industrial PhD focused on side-channel attacks and secure cryptographic implementations, in collaboration with the University of Luxembourg and Oberthur (now Idemia). Matthieu's research interests span several areas of applied cryptography, with recent work concentrating on zero-knowledge proofs and post-quantum signatures. He is a co-author of several submissions to the NIST call for additional post-quantum signatures based on the MPC-in-the-Head paradigm.
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Meeting ID: 161 2780 3271
Passcode: 425053
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Meeting ID: 161 2780 3271
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