Paper 2008/327 Original: eprint.iacr.org/2008/327 ↗
Blind HIBE and its Applications to Identity-Based Blind Signature and Blind Decryption
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.
Metadata
- Available format(s)
PDF- Category
- Cryptographic protocols
- Publication info
- Preprint.
- History
- 2009-08-12: last updated
- 2008-08-03: published
- Short URL
- https://ia.cr/2008/327
- License
- https://creativecommons.org/licenses/by/4.0/
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}
}