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- Title
Key Substitution Attacks on Lattice Signature Schemes Based on SIS Problem.
- Authors
An, Youngjoo; Lee, Hyang-Sook; Lee, Juhee; Lim, Seongan
- Abstract
The notion of key substitution security on digital signatures in the multiuser setting has been proposed by Menezes and Smart in 2004. Along with the unforgeability of signature, the key substitution security is very important since it is a critical requirement for the nonrepudiation and the authentication of the signature. Lattice-based signature is a promising candidate for post-quantum cryptography, and the unforgeability of each scheme has been relatively well studied. In this paper, we present key substitution attacks on BLISS, Lyubashevsky’s signature scheme, and GPV and thus show that these signature schemes do not provide nonrepudiation. We also suggest how to avoid key substitution attack on these schemes.
- Subjects
CYBERTERRORISM; COMPUTER security; DIGITAL signatures; MULTIUSER computer systems; QUANTUM cryptography
- Publication
Security & Communication Networks, 2018, p1
- ISSN
1939-0114
- Publication type
Article
- DOI
10.1155/2018/8525163