Abstract
Concurrent signature is a novel paradigm, which can achieve fair exchange of signatures between users. Since its appearance, the topic has been widely concerned, while the study of concurrent signature in multi-user setting suffers from some criticism. Almost all known multi-user concurrent signature schemes rely on the hardness assumptions that is insecure against quantum analysis. Furthermore, most of multi-party concurrent signature (MCS) schemes are lacking of formal security models. In the paper, in the random oracle model, we propose a construction of lattice-based MCS scheme and prove its security under the hardness of the small integer solution (SIS) problem. Since our proposed scheme is based on the lattice assumptions, which is believed to be quantum-resistant, the mathematical properties make our scheme simpler and more flexible.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
