Esra Günsay

dblp:308/5696 · DBLP profile ↗
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3ranked-venue papers
2as first author
3since 2021 · last 2026
0000-0001-6672-4253ORCID · corroborated

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Security and privacy · 3 · 2 first-author · 3 since 2021
YearPublicationVenuePosition
2026 ETK: External-Operations TreeKEM and the Security of MLS in RFC 9420
Cas Cremers, Esra Günsay, Vera Wesselkamp, Mang Zhao
EUROCRYPT (2)2
2024 A different base approach for better efficiency on range proofs
Esra Günsay, Cansu Betin Onur, Murat Cenk
J. Inf. Secur. Appl.1
2021 An Improved Range Proof with Base-3 Construction
abstract
Zero-knowledge protocols (ZKPs) allow a party to prove the validation of secret information to some other party without revealing any information about the secret itself. Appropriate, effective, and efficient use of cryptographic ZKPs contributes to many novel advances in real-world privacy-preserving frameworks. One of the most important type of cryptographic ZKPs is the zero-knowledge range proofs (ZKRPs). Such proofs have wide range of applications such as anonymous credentials, cryptocurrencies, e-cash schemes etc. In many ZKRPs the secret is represented in binary then committed via a suitable commitment scheme. Though there exist different base approaches on bilinear paring-based and RSA-like based constructions, to our knowledge there is no study on investigating the discrete logarithm-based constructions. In this study, we focus on a range proof construction produced by Mao in 1998. This protocol contains a bit commitment scheme with an OR-construction. We investigate the effect of different base approach on Mao's range proof and compare the efficiency of these basis approaches. To this end, we have extended Mao's range proof to base-3 with a modified OR-proof. We derive the number of computations in modulo exponentiations and the cost of the number of integers exchanged between parties. Then, we have generalized these costs for the base-u construction. Here, we mainly show that comparing with other base approaches, the base-3 approach consistently provides approximately 12% efficiency in computation cost and 10% efficiency in communication cost. We implemented the base-3 protocol and demonstrated that the results are consistent with our theoretical computations.
Esra Günsay, Cansu Betin Onur, Murat Cenk
SIN1