Welcome to the resource topic for 2005/188
Group Signature where Group Manager, Members and Open Authority are Identity-Based
Authors: Victor K. Wei, Tsz Hon Yuen, Fangguo ZhangAbstract:
We present the first group signature scheme with provable security
and signature size O(\lambda) bits where the group manager, the group
members, and the Open Authority (OA) are all identity-based. We use the security model of Bellare, Shi, and Zhang, except to add three identity managers for manager, members, and OA respectively, and we discard the Open Oracle. Our construction uses identity-based signatures summarized in Bellare, Namprempre, and Neven for manager, Boneh and Franklin’s IBE for OA, and we extend Bellare et al.'s group signature construction by verifiably encrypt an image of the member public key, instead of the public key itself. The last innovation is crucial in our efficiency; otherwise, Camenisch and Damgard’s verifiable encryption would have to be used resulting in lower efficiency.
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .