2026-04-14T02:41:11Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4802422025-02-03T23:41:36Zcom_2072_98col_2072_378192

Anonymous Access System with Limited Number of Uses in a Trustless Environment Garcia-Grau, Francesc Herrera-Joancomartí, Jordi Dorca Josa, Aleix Attribute-based credentials Pseudonyms Privacy-preserving credentials Self-blinded scheme Security proofs User-centred system Zero knowledge proofs Trust-less Access counter This article proposes a novel method for managing usage counters within an anonymous credential system, addressing the limitation of traditional anonymous credentials in tracking repeated use. The method takes advantage of blockchain technology through Smart Contracts deployed on the Ethereum network to enforce a predetermined maximum number of uses for a given credential. Users retain control over increments by providing zero-knowledge proofs (ZKPs) demonstrating private key possession and agreement on the increment value. This approach prevents replay attacks and ensures transparency and security. A prototype implementation on a private Ethereum blockchain demonstrates the feasibility and efficiency of the proposed method, paving the way for its potential deployment in real-world applications requiring both anonymity and usage tracking. 2024 Article https://ddd.uab.cat/record/302485 urn:10.3390/app14198581 urn:oai:ddd.uab.cat:302485 urn:scopus_id:85206295979 urn:articleid:20763417v14n19p8581 urn:oai:egreta.uab.cat:publications/bd823bbd-2985-4f35-8cc3-e421928b990b http://hdl.handle.net/2072/480242 eng Applied sciences (Basel) ; Vol. 14, Issue 19 (September 2024), art. 8581 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/4.0/ application/pdf