Welcome to the resource topic for 2003/193
Title:
Efficient Extension of Standard Schnorr/RSA signatures into Universal Designated-Verifier Signatures
Authors: Ron Steinfeld, Huaxiong Wang, Josef Pieprzyk
Abstract:Universal Designated-Verifier Signature (UDVS) schemes are digital signature schemes with additional
functionality which allows any holder of a signature to designate the signature to any desired
designated-verifier such that the designated-verifier can verify that the message was signed by the
signer, but is unable to convince anyone else of this fact.
Since UDVS schemes reduce to standard signatures when no verifier designation is performed, it is natural to ask
how to extend the classical Schnorr or RSA signature schemes into UDVS schemes, so that the existing key
generation and signing implementation infrastructure for these schemes can be used without modification. We show
how this can be efficiently achieved, and provide proofs of security for our schemes in the random oracle model.
ePrint: https://eprint.iacr.org/2003/193
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