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Title:
Sequential Aggregate Signatures from Trapdoor Permutations
Authors: Anna Lysyanskaya, Silvio Micali, Leonid Reyzin, Hovav Shacham
Abstract:An aggregate signature scheme (recently proposed by Boneh, Gentry,
Lynn and Shacham) is a method for combining n signatures from n
different signers on n different messages into one signature of unit
length. We propose \emph{sequential aggregate signatures}, in which
the set of signers is ordered. The aggregate signature is computed by
having each signer, in turn, add his signature to it. We show how to
realize this in such a way that the size of the aggregate signature is
independent of n. This makes sequential aggregate signatures a
natural primitive for certificate chains, whose length can be reduced
by aggregating all signatures in a chain. We give a construction
based on families of certified trapdoor permutations, and show how to
instantiate our scheme based on RSA.
ePrint: https://eprint.iacr.org/2003/091
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