Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption

Le Trieu Phong; Wakaha Ogata

Paper 2008/327

Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption

Le Trieu Phong and 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.

Note: Update the publication info. The title in the IEICE journal is "New Identity-Based Blind Signature and Blind Decryption Scheme in the Standard Model"

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. IEICE Trans. Fundamentals, Vol.E92-A, No.8, August 2009
Keywords: blind HIBE blind signature blind decryption
Contact author(s): letrieu letrieuphong @ gmail com
History: 2009-08-12: revised; 2008-08-03: received; See all versions
Short URL: https://ia.cr/2008/327
License: CC BY

BibTeX

@misc{cryptoeprint:2008/327,
      author = {Le Trieu Phong and Wakaha Ogata},
      title = {Blind {HIBE} and its Applications to Identity-Based Blind Signature and Blind Decryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2008/327},
      year = {2008},
      url = {https://eprint.iacr.org/2008/327}
}