A Hash-Based Quantum-Resistant Designated Verifier Signature Scheme

Digital signatures are unsuitable for specific applications that sensitive on a personal or commercial level because they universally verifiable. Jakobsson et al. proposed the Designated Verifier Signature (DVS) system, which only allows intended verifier to validate message’s signature. It prohibits disclosure of conviction third party. This functionality is useful in require both authenticity and signer privacy, such as electronic voting tender calls. The vast majority current DVS schemes based difficult number theory problems integer factorization discrete log over various groups. development large-scale quantum computer would render these unsafe. As result, it critical develop quantum-resistant methods. In classical computers, one-way functions more efficient secure. They have several advantages digital trapdoor functions. hash-based now considered viable alternatives number-theoretic signatures. Existing signatures, other hand, easily verifiable by anyone. do not protect signer’s identity. addition, one-time paper presents multi-time designated signature scheme ensures anonymity. unforgeability also tested random oracle model under chosen message attack. properties non-transferability non-delegatability investigated.