Paper 2009/572

On the Equivalence of Two Models for Key-Dependent-Message Encryption

Alexander W. Dent

Abstract

In this paper we examine the relationship between the security models for key-dependent-message encryption proposed by Backes \emph{et al.} \cite{Backes:08:OAEP} and Camenisch \emph{et al.} \cite{Camenisch:09:Public}. We show that when the two notions are equivalent for certain logical classes of function families when the number of keys $\ell$ in the system is logarithmically small.

Note: The proof in this paper contains a flaw which we cannot currently overcome. Hence, we are withdrawing the paper until we can provide a full proof.

Metadata
Available format(s)
-- withdrawn --
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Contact author(s)
a dent @ rhul ac uk
History
2012-11-11: withdrawn
2009-12-01: received
See all versions
Short URL
https://ia.cr/2009/572
License
Creative Commons Attribution
CC BY
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