Multi-Shard Private Transactions for Permissioned Blockchains

10/16/2020
by   Elli Androulaki, et al.
0

Traditionally, blockchain systems involve sharing transaction information across all blockchain network participants. Clearly, this introduces barriers to the adoption of the technology by the enterprise world, where preserving the privacy of the business data is a necessity. Previous efforts to bring privacy and blockchains together either still leak partial information, are restricted in their functionality or use costly mechanisms like zk-SNARKs. In this paper, we propose the Multi-Shard Private Transaction (MSPT) protocol, a novel privacy-preserving protocol for permissioned blockchains, which relies only on simple cryptographic primitives and targeted dissemination of information to achieve atomicity and high performances.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
07/30/2018

A Flexible Network Approach to Privacy of Blockchain Transactions

For preserving privacy, blockchains can be equipped with dedicated mecha...
research
10/27/2018

A privacy-preserving system for data ownership using blockchain and distributed databases

Blockchain has the potential to revolutionize the way we store, use, and...
research
02/09/2021

Trustless, privacy-preserving blockchain bridges

In this paper, we present a protocol for facilitating trust-less cross-c...
research
04/09/2021

LightPIR: Privacy-Preserving Route Discovery for Payment Channel Networks

Payment channel networks are a promising approach to improve the scalabi...
research
11/06/2021

Sunspot: A Decentralized Framework Enabling Privacy for Authorizable Data Sharing on Transparent Public Blockchains

Blockchain technologies have been boosting the development of data-drive...
research
05/05/2020

Aggregated Private Information Retrieval: A First Practical Implementation to Support Large-Scale Disease Analytics

With the outbreak of the coronavirus, governments rely more and more on ...
research
10/13/2022

PUPoW: A framework for designing blockchains with practically-useful-proof-of-work vanitycoin

Bitcoin is the first of its kind, a truly decentralized and anonymous cr...

Please sign up or login with your details

Forgot password? Click here to reset