Abstract Decentralized Anonymous Credential (DAC) has posed enormous potential in
smart grids for protecting user privacy (eg preventing user's daily life from being sketched
out). However, the existing DAC protocols still compromise user privacy for a full list of
attributes are disclosed during showing credentials. In this paper, to construct a privacy-
enhancing decentralized anonymous credential (PEDAC) protocol, we first design a more
efficient range proof to hide user's attributes. Specifically, we are inspired by Camenisch et …