Anonymous attribute-based designated verifier signature

An attribute-based signature (ABS), is a cryptographic scheme where someone can sign message using any kind of predicates verified by the attributes he owns. For such scheme, it expected to be impossible for users collude if none them originally able on his own. The main advantage solution that signer remain anonymous in set fulfilling chosen predicate. It then used authentication instance. In this paper, our contribution new designated verifier attribute based scheme. other words, authenticate according predicate, and while doing so pick another policy only owning check validity signature. extend authentication, ensuring cannot prove anyone valid has been performed. addition classical anonymity, also increases privacy as no further statistics connection deduced. To do so, we first propose generic construction primitive standard building blocks. instantiation described proved through security games under Symmetric External Diffie–Hellman ( $$\textsf {SXDH}$$ ) assumption. This compared state-of-the-art solutions terms both efficiency.