Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74355
Title: RingCT 2.0 : a compact accumulator-based (linkable ring signature) protocol for blockchain cryptocurrency Monero
Authors: Sun, SF 
Au, MH 
Liu, JK
Yuen, TH
Issue Date: 2017
Publisher: Springer
Source: Lecture notes in computer science (including subseries Lecture notes in artificial intelligence and lecture notes in bioinformatics), 2017, v. 10493, p. 456-474 How to cite?
Journal: Lecture notes in computer science (including subseries Lecture notes in artificial intelligence and lecture notes in bioinformatics) 
Abstract: In this work, we initially study the necessary properties and security requirements of Ring Confidential Transaction (RingCT) protocol deployed in the popular anonymous cryptocurrency Monero. Firstly, we formalize the syntax of RingCT protocol and present several formal security definitions according to its application in Monero. Based on our observations on the underlying (linkable) ring signature and commitment schemes, we then put forward a new efficient RingCT protocol (RingCT 2.0), which is built upon the well-known Pedersen commitment, accumulator with one-way domain and signature of knowledge (which altogether perform the functions of a linkable ring signature). Besides, we show that it satisfies the security requirements if the underlying building blocks are secure in the random oracle model. In comparison with the original RingCT protocol, our RingCT 2.0 protocol presents a significant space saving, namely, the transaction size is independent of the number of groups of input accounts included in the generalized ring while the original RingCT suffers a linear growth with the number of groups, which would allow each block to process more transactions.
Description: 22nd European Symposium on Research in Computer Security, ESORICS 2017, 11 - 15 September 2017
URI: http://hdl.handle.net/10397/74355
ISBN: 9783319663982
ISSN: 0302-9743
EISSN: 1611-3349
DOI: 10.1007/978-3-319-66399-9_25
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