Bicameral and Auditably Private Signatures

ePrint Report: Bicameral and Auditably Private Signatures

Khoa Nguyen, Partha Sarathi Roy, Willy Susilo, Yanhong Xu

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 $\mathbf{x}$ and a certified policy $P$, a signer can issue a publicly verifiable signature $\Sigma$ on a message $m$ as long as $(m, \mathbf{x})$ satisfies $P$. A noteworthy characteristic of BAPS is that both attribute $\mathbf{x}$ and …

certified eprint report features issue nguyen novel policy privacy private report signature signatures system