Welcome to the resource topic for 2005/369
Title:
Secure and {\sl Practical} Identity-Based Encryption
Authors: David Naccache
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 \ell at the cost of (negligibly) reducing security by
\ell bits. Therefore, our construction settles an open question
asked by Waters and constitutes the first fully secure {\sl
practical} Identity-Based Encryption scheme.
ePrint: https://eprint.iacr.org/2005/369
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