"Bicameral and Auditably Private Signatures" by Khoa Nguyen, Partha Sarathi Roy et al.
This paper introduces Bicameral and Auditably Private Signatures (BAPS) – a new privacy-preserving signature system with several novel features. In a BAPS system, given a certified attribute and a certified policy P, a signer can issue a publicly verifiable signature on a message m as long as satisfies P. A noteworthy characteristic of BAPS is that both attribute and policy P are kept hidden from the verifier, yet the latter is convinced that these objects were certified by an attribute-issuing authority and a policy-issuing authority, respectively. By considering bicameral certification aut...
Source: uow.edu.au