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Keywords = strong forward-secure signature

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16 pages, 1472 KB  
Article
Research on Quantum-Attack-Resistant Strong Forward-Secure Signature Schemes
by Fengyin Li, Junhui Wang, Mengxue Shang, Dandan Zhang and Tao Li
Entropy 2023, 25(8), 1159; https://doi.org/10.3390/e25081159 - 2 Aug 2023
Cited by 1 | Viewed by 1755
Abstract
The security of digital signatures depends significantly on the signature key. Therefore, to reduce the impact of leaked keys upon existing signatures and subsequent ones, a digital signature scheme with strong forward security could be an effective solution. Most existing strong forward-secure digital [...] Read more.
The security of digital signatures depends significantly on the signature key. Therefore, to reduce the impact of leaked keys upon existing signatures and subsequent ones, a digital signature scheme with strong forward security could be an effective solution. Most existing strong forward-secure digital signature schemes rely on traditional cryptosystems, which cannot effectively resist quantum attacks. By introducing lattice-based delegation technology into the key-iteration process, a two-direction and lattice-based key-iteration algorithm with strong forward security is proposed. In the proposed algorithm, a unique key pair is assigned to the signer in every period. Based on the proposed algorithm, a strong forward-secure signature scheme is further put forward, which achieves resistance to quantum attacks. Performance analysis shows that under the security assumption of the SIS problem on the lattice, the proposed strong forward-secure signature scheme is existentially unforgeable under the random oracle model. Ultimately, based on the proposed strong forward-secure signature scheme, a remote identity-authentication scheme that is resistant to quantum attacks is proposed, ensuring post-quantum security in the user-authentication process. Full article
(This article belongs to the Special Issue Quantum and Classical Physical Cryptography)
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