Yashvanth Kondi

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Welcome!

I am a PhD candidate at Northeastern, where I am advised by abhi shelat.

My research interests lie in the design of cryptographic protocols with a focus on secure multiparty computation (MPC). Specifically, I am interested in developing MPC techniques to realize functionalities of practical relevance, for instance to decentralize the computation of ECDSA, Schnorr/EdDSA, and RSA.

Reach me at ykondi at ccs dot neu dot edu.

I received my Bachelor's and Master's degrees from the International Institute of Information Technology, Bangalore (IIITB) in 2017, where I was advised by Ashish Choudhury. I was also supervised by Arpita Patra at the CrIS Lab, Indian Institute of Science (IISc).

I spent summer 2020 (and part-time Fall 2020) interning with the crypto group at Novi Research, where I was hosted by Valeria Nikolaenko. I visited Claudio Orlandi at the Aarhus Crypto Group in summer 2019.


Manuscript(s)
Improved Straight-Line Extraction in the Random Oracle Model With Applications to Signature Aggregation
Yashvanth Kondi and abhi shelat
[TL;DR] [paper]


Publications
Guaranteed Output in O(sqrt(n)) Rounds for Round-Robin Sampling Protocols
EUROCRYPT 2022
Ran Cohen, Jack Doerner, Yashvanth Kondi, and abhi shelat
[TL;DR] [paper]

Threshold Schnorr with Stateless Deterministic Signing from Standard Assumptions
CRYPTO 2021
François Garillot, Yashvanth Kondi, Payman Mohassel, and Valeria Nikolaenko
[TL;DR] [paper] [videos: short, long] [slides] [.bib]

Non-interactive half-aggregation of EdDSA and variants of Schnorr signatures
CT-RSA 2021
Konstantinos Chalkias, François Garillot, Yashvanth Kondi, and Valeria Nikolaenko
[TL;DR] [paper] [video] [slides] [code] [.bib]

Refresh When You Wake Up: Proactive Threshold Wallets with Offline Devices
IEEE S&P (Oakland) 2021
Yashvanth Kondi, Bernardo Magri, Claudio Orlandi, and Omer Shlomovits
[TL;DR] [paper] [video] [slides] [code] [.bib]

Multiparty Generation of an RSA Modulus
CRYPTO 2020
Journal of Cryptology (full version)
Megan Chen, Ran Cohen, Jack Doerner, Yashvanth Kondi, Eysa Lee, Schuyler Rosefield, and abhi shelat
[TL;DR] [paper] [videos: short, long (Jack)] [slides] [.bib]

Threshold ECDSA from ECDSA Assumptions: The Multiparty Case
IEEE S&P (Oakland) 2019
Jack Doerner, Yashvanth Kondi, Eysa Lee, and abhi shelat
[TL;DR] [paper] [video] [slides] [code] [.bib]

Secure Two-party Threshold ECDSA from ECDSA Assumptions
IEEE S&P (Oakland) 2018
Jack Doerner, Yashvanth Kondi, Eysa Lee, and abhi shelat
[TL;DR] [paper] [slides] [code] [.bib]

Efficient Adaptively Secure Zero-knowledge from Garbled Circuits
PKC 2018
Chaya Ganesh, Yashvanth Kondi, Arpita Patra, and Pratik Sarkar
[TL;DR] [paper] [slides] [.bib]

Privacy-Free Garbled Circuits for Formulas: Size Zero and Information-Theoretic
CRYPTO 2017
Yashvanth Kondi and Arpita Patra
[TL;DR] [paper] [video] [.bib]


External Reviews
Journal of Cryptology, IEEE T-IFS.
EUROCRYPT (2022, 2021, 2020, 2019, 2018), CRYPTO (2021, 2018), PODC (2021), ASIACRYPT (2020, 2019, 2018, 2017), CCS (2019), TCC (2020, 2019), PKC (2022, 2021, 2019, 2017), SCN (2020)