Welcome to the resource topic for 2024/128
Non-Binding (Designated Verifier) Signature
Authors: Ehsan EbrahimiAbstract:
We argue that there are some scenarios in which
plausible deniability might be desired for a digital signature
scheme. For instance, the non-repudiation property of conventional
signature schemes is problematic in designing an Instant
Messaging system (WPES 2004). In this paper, we formally
define a non-binding signature scheme in which the Signer
is able to disavow her own signature if she wants, but, the
Verifier is not able to dispute a signature generated by the
Signer. That is, the Signer is able to convince a third party
Judge that she is the owner of a signature without disclosing
her secret information. We propose a signature scheme that
is non-binding and unforgeable. Our signature scheme is post-quantum secure if the underlying cryptographic primitives are post-quantum secure. In addition, a modification to our nonbinding
signature scheme leads to an Instant Messaging system
that is of independent interest.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .