Boneh et al. formally defined such VLR group signatures and proposed a VLR resolution for a short group signature. Later Nakanishi et al. pointed out it has a disadvantage of backward linkability, and provided a VLR resolution with backward unlinkability at the cost of longer signature size and more computation.
We improve Nakanishi et al.'s scheme by reducing the signature size and computations required, without compromising VLR and backward unlinkability.Category / Keywords: Digital Signature; Group Signature; Membership Revocation; Verifier Local Revocation; Trusted Computing. Date: received 13 Mar 2006, last revised 23 Sep 2006 Contact author: zhousujing at is iscas ac cn Available format(s): PDF | BibTeX Citation Version: 20060923:073857 (All versions of this report) Short URL: ia.cr/2006/100 Discussion forum: Show discussion | Start new discussion