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Title: BlAnC: Blockchain-based Anonymous and Decentralized Credit Networks
Distributed credit networks, such as Ripple [18] and Stellar [21], are becoming popular as an alternative means for financial transactions. However, the current designs do not preserve user privacy or are not truly decentralized. In this paper, we explore the creation of a distributed credit network that preserves user and transaction privacy and unlinkability. We propose BlAnC, a novel, fully decentralized blockchain-based credit network where credit transfer between a sender-receiver pair happens on demand. In BlAnC, multiple concurrent transactions can occur seamlessly, and malicious network actors that do not follow the protocols and/or disrupt operations can be identified efficiently. We perform security analysis of our proposed protocols in the universal composability framework to demonstrate its strength, and discuss how our network handles operational dynamics. We also present preliminary experiments and scalability analyses.  more » « less
Award ID(s):
1757207 1800088
PAR ID:
10088716
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
In Ninth ACM Conference on Data and Application Security and Privacy (CODASPY ’19)
Page Range / eLocation ID:
339 to 350
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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