Dynamic Attribute Based Group Signature with Attribute Anonymity and Tracing in the Standard Model

Abstract

Attribute Based Group Signature (ABGS) scheme is a kind of group signature scheme where the group members possessing certain privileges (attributes) only are eligible for signing the document. There are ABGS schemes proposed in the literature which do not provide Attribute Anonymity, a desirable feature to achieve, in the standard model. We have come up with an ABGS scheme which provides attribute anonymity along with an Attribute Tracing feature secure under standard model. It also achieves constant size signature.