Delegated RingCT: faster anonymous transactions

Rui Morais; Paul Crocker; Simao Melo de Sousa

Paper 2020/1521

Delegated RingCT: faster anonymous transactions

Rui Morais, Paul Crocker, and Simao Melo de Sousa

Abstract

We present a modification to RingCT protocol with stealth addresses that makes it compatible with Delegated Proof of Stake based consensus mechanisms called Delegated RingCT. Our scheme has two building blocks: a customised version of an Integrated Signature and Encryption scheme composed of a public key encryption scheme and two signature schemes (a digital signature and a linkable ring signature); and non-interactive zero knowledge proofs. We give a description of the scheme, security proofs and a prototype implementation whose benchmarking is discussed. Although Delegated RingCT does not have the same degree of anonymity as other RingCT constructions, we argue that the benefits that the compatibility with DPoS consensus mechanisms brings constitute a reasonable trade-off for being able to develop an anonymous decentralised cryptocurrency faster and more scalable than existing ones.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Preprint. MINOR revision.
Keywords: Anonymity Privacy Monero RingCT Dele- gated Proof of Stake
Contact author(s): ru morais @ ubi pt
History: 2020-12-08: received
Short URL: https://ia.cr/2020/1521
License: CC BY

BibTeX

@misc{cryptoeprint:2020/1521,
      author = {Rui Morais and Paul Crocker and Simao Melo de Sousa},
      title = {Delegated RingCT: faster anonymous transactions},
      howpublished = {Cryptology ePrint Archive, Paper 2020/1521},
      year = {2020},
      note = {\url{https://eprint.iacr.org/2020/1521}},
      url = {https://eprint.iacr.org/2020/1521}
}