Welcome to the resource topic for 2004/311
Title:
Hierarchical Group Signatures
Authors: Marten Trolin, Douglas Wikstrom
Abstract:We introduce the notion of \emph{hierarchical group signatures}. This
is a proper generalization of group signatures, which allows multiple
group managers organized in a tree with the signers as leaves. For a
signer that is a leaf of the subtree of a group manager, the group
manager learns which of its children that (perhaps indirectly) manages
the signer.
We provide definitions for the new notion and construct a scheme that
is provably secure given the existence of a family of trapdoor
permutations.
We also present a construction which is relatively practical, and
prove its security in the random oracle model under the strong RSA
assumption and the DDH assumption.
ePrint: https://eprint.iacr.org/2004/311
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