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Erschienen in:
2011 | OriginalPaper | Buchkapitel
E-Voting: A New Approach Using Double-Blind Identity-Based Encryption
verfasst von : David Gray, Caroline Sheedy
Erschienen in: Public Key Infrastructures, Services and Applications
Verlag: Springer Berlin Heidelberg
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We present a new cryptographic construction, double-blind identity-based encryption (DB-IBE). In standard IBE, the identity string that is passed to a key generation centre (
$\mathcal{KGC}$
) during the key extraction phase is visible to the
$\mathcal{KGC}$
. Recent work introduced the idea of blinding the identity string, resulting in a blind IBE scheme which obscures the identity string from a
$\mathcal{KGC}$
. Double-blind IBE schemes, which are extensions of blind IBE schemes, allow a user to construct an identity string that is partially obscured from the
$\mathcal{KGC}$
, while also facilitating the
$\mathcal{KGC}$
adding elements to the identity string which are obscured from the user. Using DB-IBE, we present an e-voting scheme with desirable features such as universal verifiability, voter verifiability and receipt-freeness.