Paper Info
Title
Ringct 2.0: A Compact Accumulator-Based (Linkable Ring Signature) Protocol For Blockchain Cryptocurrency Monero
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.
Year
DOI
Venue
2017
10.1007/978-3-319-66390-9_25
COMPUTER SECURITY - ESORICS 2017, PT II
DocType
Volume
ISSN
Journal
10493
0302-9743
Citations 
PageRank 
References 
9
0.50
22
Authors
4
Name
Order
Citations
PageRank
Shifeng Sun15915.53
Man Ho Au2144497.70
Joseph K. Liu3113467.24
Tsz Hon Yuen450733.86