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Paper 2005/005

A sufficient condition for key-privacy

Shai Halevi

Abstract

The notion of key privacy for encryption schemes was defined formally by Bellare, Boldyreva, Desai and Pointcheval in Asiacrypt 2001. This notion seems useful in settings where anonymity is important. In this short note we describe a (very simple) sufficient condition for key privacy. In a nutshell, a scheme that provides data privacy is guaranteed to provide also key privacy if the distribution of a *random encryption of a random message* is independent of the public key that is used for the encryption.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
Anonymitykey-privacy
Contact author(s)
shaih @ alum mit edu
History
2005-01-08: received
Short URL
https://ia.cr/2005/005
License
Creative Commons Attribution
CC BY
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