Homomorphic Trapdoors for Identity-based and Group Signatures

ePrint Report: Homomorphic Trapdoors for Identity-based and Group Signatures

Buvana Ganesh, Apurva Vangujar, Alia Umrani, Paolo Palmieri

Group signature (GS) schemes are an important primitive in cryptography that provides anonymity and traceability for a group of users. In this paper, we propose a new approach to constructing GS schemes using the homomorphic trapdoor function (HTDF). We focus on constructing an identity-based homomorphic signature (IBHS) scheme using the trapdoor, providing a simpler scheme that has no zero-knowledge proofs. Our scheme allows …

anonymity cryptography data eprint report focus function identity important knowledge report signature signatures traceability