Work

Transaction-Level Blockchain Rewrites with Revocation and Traceability Using Attribute-Based Cryptosystems

Year: 2025

Type: article

Abstract: In this article, we study efficient and authorized rewriting of transactions already written to a blockchain. Mutable transactions will make a fraction of all blockchain transactions, but will be a necessity to meet the needs of privacy regulations, such as the General Data Protection Regulation (GDPR). The state-of-the-art rewriting approaches have several shortcomings, such as lack of user anonymity, inefficiency, and absence of revocation mechanisms for entities authorized to mutate transactions. To address this challenge we present \(\mathsf{ReTRACe}\) , an efficient framework for blockchain rewrites. \(\mathsf{ReTRACe}\) is designed by composing a revocable chameleon hash scheme with an ephemeral trapdoor, a revocable fast attribute based encryption scheme, and a dynamic group signature scheme. In this article, (i) we discuss \(\mathsf{ReTRACe}\) and its constituent primitives in detail, (ii) present security analyses of the primitives, and (iii) present experimental results to demonstrate the scalability of \(\mathsf{ReTRACe}\) .

Source: Distributed Ledger Technologies Research and Practice

DOI: 10.1145/3736655

Authors: Gaurav Panwar, Roopa Vishwanathan, Satyajayant Misra

Institution: New Mexico State University

Language: English

Topic: Blockchain Technology Applications and Security

Subfield: Information Systems

Field: Computer Science

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, U.S. Department of Energy, Australian Government

Awards: RINGS: Resilient Edge Ecosystem for Collaborative and Trustworthy Disaster Response (REsCue), CREST: Interdisciplinary Center for Research Excellence in Design of Intelligent Technologies for Smartgrids Phase II, E-RISE RII: Research Center for Distributed Resilient and Emergent-Intelligence-Based Additive Manufacturing, BUILDING A FEDERATED LEARNING FRAMEWORK FOR TRUSTWORTHY AND RESILIENT ENERGY INTERNET OF THINGS (EIOT) INFRASTRUCTURE