Welcome to the resource topic for 2023/471
Title:
Compact Signature Aggregation from Modulo-Lattices
Authors: Toi Tomita, Junji Shikata
Abstract:An aggregate signature scheme allows multiple signatures generated by different people for different messages to be aggregated into a compact aggregate signature. We propose the first signature aggregation scheme that (1) grows the size of the aggregate signature only logarithmically in the number of signatures to be aggregated, (2) is many-time, (3) supports non-interactive aggregation, (4) its security is based on the standard lattice assumption in the random oracle model. To obtain the result, we construct a new compact non-interactive batch argument (BARG) for NP. Our BARG has a very compact proof and its security is based on the standard modulo lattice assumptions in the random oracle model.
ePrint: https://eprint.iacr.org/2023/471
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