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PKC
2015
Springer

Group Signatures from Lattices: Simpler, Tighter, Shorter, Ring-Based

4 years 7 months ago
Group Signatures from Lattices: Simpler, Tighter, Shorter, Ring-Based
We introduce a lattice-based group signature scheme that provides several noticeable improvements over the contemporary ones: simpler construction, weaker hardness assumptions, and shorter sizes of keys and signatures. Moreover, our scheme can be transformed into the ring setting, resulting in a scheme based on ideal lattices, in which the public key and signature both have bitsize O(n·log N), for security parameter n, and for group of N users. Towards our goal, we construct a new lattice-based cryptographic tool: a statistical zero-knowledge argument of knowledge of a valid message-signature pair for Boyen’s signature scheme (Boyen, PKC’10), which potentially can be used as the building block to design various privacy-enhancing cryptographic constructions.
San Ling, Khoa Nguyen, Huaxiong Wang
Added 16 Apr 2016
Updated 16 Apr 2016
Type Journal
Year 2015
Where PKC
Authors San Ling, Khoa Nguyen, Huaxiong Wang
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