A convertible limited (multi-) verifier signature (CL(M)VS) provides controlled verifiability and preserves the privacy of the signer. Furthermore, limited verifier(s) can designate the signature to a third party or convert it into a publicly verifiable signature upon necessity. In this proposal, we first present a generic construction of convertible limited verifier signature (CLVS) into which...

Based on the bilinear Diffie-Hellman assumption, in 2009, Kang et al. proposed an identity-based strong Designated Verifier Signature (DVS) scheme which only allows the intended verifier to verify the signature. Besides, the designated verifier is not capable of transferring the conviction to any third party. Their scheme was proved secure in the random oracle model. In this paper, however, we ...

A strong designated verifier signature scheme makes it possible for a signer to convince a designated verifier that she has signed a message in such a way that the designated verifier cannot transfer the signature to a third party, and no third party can even verify the validity of a designated verifier signature. We show that anyone who intercepts one signature can verify subsequent signatures...

In a classic digital signature scheme, the global community is capable of verifying a signature. In a designated verifier scheme (DVS), only the designated verifier has this capability. In a classic DVS scheme the signer themselves “designates” the entity that will have the capability of verifying their signature. In a pure identity-based signature scheme a Trusted Authority is introduced, and ...

A new type of signature is presented in this paper, named adaptable group-oriented signature. In contrast with traditional group-oriented signature, the new one laid a strong emphasis on how to improve the signer’s efficiency. In fact, this new type of group-oriented signature can be seen as a type of designated verifier signature. In contrast with the ordinary designated verifier signature, it...

Motivated by privacy issues associated with dissemination of signed digital certificates, we definea new type of signature scheme called a ‘Universal Designated-Verifier Signature’ (UDVS). A UDVSscheme can function as a standard publicly-verifiable digital signature but has additional functional-ity which allows any holder of a signature (not necessarily the signer) to designate the...

Since the introduction of nominative signature in 1996, there have been only a few schemes proposed and all of them have already been found flawed. In addition, there is no formal security model defined. Even more problematic, there is no convincing application proposed. Due to these problems, the research of nominative signature has almost stalled and it is unknown if a secure nominative signa...

A designated verifier signature is a special type of digital signature, which convinces a designated verifier that she has signed a message in such a way that the designated verifier cannot transfer the signature to a third party. A strong designated verifier signature scheme enhances the privacy of the signer such that no one but the designated verifier can verify the signer’s signatures. In t...