Welcome to the resource topic for 2008/327
Title:
Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption
Authors: Le Trieu Phong, Wakaha Ogata
Abstract:We explicitly describe and analyse \textit{blind} hierachical identity-based encryption (\textit{blind} HIBE) schemes, which are natural generalizations of blind IBE schemes \cite{gh07}. We then uses the blind HIBE schemes to construct: (1) An identity-based blind signature scheme secure in the standard model, under the computational Diffie-Hellman (CDH) assumption, and with much shorter signature size and lesser communication cost, compared to existing proposals. (2) A new mechanism supporting a user to buy digital information over the Internet without revealing what he/she has bought, while protecting the providers from cheating users.
ePrint: https://eprint.iacr.org/2008/327
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