Secure and {\sl Practical} Identity-Based Encryption
Cryptography and Security
2007-05-23 v1
Abstract
In this paper, we present a variant of Waters' Identity-Based Encryption scheme with a much smaller public-key size (only a few kilobytes). We show that this variant is semantically secure against passive adversaries in the standard model.\smallskip In essence, the new scheme divides Waters' public key size by a factor at the cost of (negligibly) reducing security by bits. Therefore, our construction settles an open question asked by Waters and constitutes the first fully secure {\sl practical} Identity-Based Encryption scheme
Cite
@article{arxiv.cs/0510042,
title = {Secure and {\sl Practical} Identity-Based Encryption},
author = {David Naccache},
journal= {arXiv preprint arXiv:cs/0510042},
year = {2007}
}