RingCT 2.0: A Compact Accumulator-Based (Linkable Ring Signature) Protocol for Blockchain Cryptocurrency Monero
Published in 22nd European Symposium on Research in Computer Security (ESORICS 2017), Oslo, Norway, 2017
Recommended citation: Shi-Feng Sun, Man Ho Au, Joseph K. Liu, and Tsz Hon Yuen. “RingCT 2.0: A Compact Accumulator-Based (Linkable Ring Signature) Protocol for Blockchain Cryptocurrency Monero.” In Computer Security – ESORICS 2017, Lecture Notes in Computer Science, vol. 10493, pp. 456–474, 2017. https://doi.org/10.1007/978-3-319-66399-9_25
This paper formalizes security requirements for Ring Confidential Transactions in Monero and proposes RingCT 2.0. The construction uses Pedersen commitments, accumulators, and signatures of knowledge to achieve substantial space savings: transaction size is independent of the number of input-account groups.