A Quantum-Resistant Implementation of a Digital Cash System with Valued and no-Valued e-Coins
| dc.contributor.author | Miret, Josep M. (Josep Maria) | |
| dc.contributor.author | Sebé Feixas, Francesc | |
| dc.contributor.author | Simón, Sergi | |
| dc.date.accessioned | 2025-10-09T11:31:51Z | |
| dc.date.available | 2025-10-09T11:31:51Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | Digital cash is a form of money that is minted, stored, and spent digitally. As opposed to debit or credit cards, it enables untraceable payments in the sense that the payer can acquire products while keeping their identity secret. In a recent paper, a new digital cash paradigm including the so-called no-valued e-coins was proposed. No-valued e-coins are used to perform bogus transactions which mask consumption patterns. In this paper, we analyze the aforementioned cash paradigm and investigate the possibility of implementing it over quantumresistant cryptographic schemes. This objective has been achieved using off-the-shelf cryptosystems for data encryption and digital signature which have been deeply analyzed to check they provide the required features. | |
| dc.description.sponsorship | This paper is also part of the project “Avances en criptografía post-cuántica aplicados al desarrollo de un sistema de cupones”, financed by “European Union NextGeneration–UE, the Recovery Plan, Transformation and Resilience, through INCIBE”. | |
| dc.identifier.isbn | 978-84-19682-95-6 | |
| dc.identifier.uri | https://hdl.handle.net/10459.1/468767 | |
| dc.language.iso | eng | |
| dc.publisher | Universidad de León, Servicio de Publicaciones | |
| dc.relation | info:eu-repo/grantAgreement/AEI/ Programa Estatal para Impulsar la Investigación Científico-Técnica y su Transferencia/ PID2021-124613OB-I00/ES/ EL RETO POST-CUANTICO: PROTEGIENDO LA SOCIEDAD CON ISOGENIAS Y CODIGOS | |
| dc.relation.ispartof | XVIII Reunión Española sobre Criptología y Seguridad de la Información: XVIII RECSI, León 23-25 octubre 2024. (p 247-252). Universidad de León, Servicio de Publicaciones. | |
| dc.rights | cc-by-nc-nd (d) Josep M. Miret et al., 2025 | |
| dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
| dc.subject | Cryptography | |
| dc.subject | Digital Cash | |
| dc.subject | Privacy | |
| dc.subject | Quantum Resistant Cryptography | |
| dc.title | A Quantum-Resistant Implementation of a Digital Cash System with Valued and no-Valued e-Coins | |
| dc.type | info:eu-repo/semantics/conferenceObject | |
| dc.type.version | info:eu-repo/semantics/publishedVersion |