Paper 2010/197
Fully Secure Anonymous HIBE and Secret-Key Anonymous IBE with Short Ciphertexts
Angelo De Caro, Vincenzo Iovino, and Giuseppe Persiano
Abstract
Lewko and Waters [Eurocrypt 2010] presented a fully secure HIBE with short ciphertexts. In this paper we show how to modify their construction to achieve anonymity. We prove the security of our scheme under static (and generically secure) assumptions formulated in composite order bilinear groups. In addition, we present a fully secure Anonymous IBE in the secret-key setting. Secret-Key Anonymous IBE was implied by the work of [Shen-Shi-Waters - TCC 2009] which can be shown secure in the selective-id model. No previous fully secure construction of secret-key Anonymous IBE is known.
Note: Extended version of the Pairing 2010 paper.
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Pairing 2010
- Keywords
- IBEHierarchical IBEfull securitykey privacy and anonymity.
- Contact author(s)
- decaro @ dia unisa it
- History
- 2010-10-28: last of 4 revisions
- 2010-04-09: received
- See all versions
- Short URL
- https://ia.cr/2010/197
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2010/197,
author = {Angelo De Caro and Vincenzo Iovino and Giuseppe Persiano},
title = {Fully Secure Anonymous {HIBE} and Secret-Key Anonymous {IBE} with Short Ciphertexts},
howpublished = {Cryptology {ePrint} Archive, Paper 2010/197},
year = {2010},
url = {https://eprint.iacr.org/2010/197}
}
