New Identity-Based Blind Signature and Blind Decryption Scheme in the Standard Model

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概要

• 論文の詳細を見る

• We explicitly describe and analyse blind hierachical identity-based encryption (blind HIBE) schemes, which are natural generalizations of blind IBE schemes [20]. 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.

• 2009-08-01

著者

• OGATA Wakaha

  Tokyo Institute of Technology

• PHONG Le

  Tokyo Institute of Technology

• Phong Le

  Tokyo Inst. Of Technol. Tokyo Jpn

• Ogata Wakaha

  Tokyo Inst. Of Technol. Tokyo Jpn

• Ogata Wakaha

  Department Of Computer Engineering Faculty Of Engineering Himeji Institute Of Technology

• Ogata Wakaha

  Faculty Of Engineering Tokyo Institute Of Technology

• Ogata Wakaha

  Faculty Of Engineering Himeji Institute Of Technology

• Ogata Wakaha

  Himeji Institute Of Technology

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