An Improved Range Proof with Base-3 Construction

Date

2021-01-01

Author

Günsay, Esra
Onur, Cansu Betin
Cenk, Murat

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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.

Subject Keywords

commitment schemes, OR proof, range proof, zero knowledge proof

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85127291164&origin=inward
https://hdl.handle.net/11511/97124

DOI

https://doi.org/10.1109/sin54109.2021.9699258

Conference Name

14th International Conference on Security of Information and Networks, SIN 2021

Collections

Graduate School of Applied Mathematics, Conference / Seminar

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Citation Formats

E. Günsay, C. B. Onur, and M. Cenk, “An Improved Range Proof with Base-3 Construction,” presented at the 14th International Conference on Security of Information and Networks, SIN 2021, Virtual, Online, Birleşik Krallık, 2021, Accessed: 00, 2022. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85127291164&origin=inward.