[Resource Topic] 2008/007: Efficient One-round Key Exchange in the Standard Model

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Efficient One-round Key Exchange in the Standard Model

Authors: Colin Boyd, Yvonne Cliff, Juan M. Gonzalez Nieto, Kenneth G. Paterson


We consider one-round identity-based key exchange protocols secure in the standard model. The security analysis uses the powerful security model of Canetti and Krawczyk and a natural extension of it to the ID-based setting. It is shown how KEMs can be used in a generic way to obtain two different protocol designs with progressively stronger security guarantees. A detailed analysis of the performance of the protocols is included; surprisingly, when instantiated with specific KEM constructions, the resulting protocols are competitive with the best previous schemes that have proofs only in the random oracle model.

ePrint: https://eprint.iacr.org/2008/007

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