Paper 2011/347

An efficient certificateless authenticated key agreement protocol without bilinear pairings

Debiao He

Abstract

Certificateless public key cryptography simplifies the complex certificate management in the traditional public key cryptography and resolves the key escrow problem in identity-based cryptography. Many certificateless authenticated key agreement protocols using bilinear pairings have been proposed. But the relative computation cost of the pairing is approximately twenty times higher than that of the scalar multiplication over elliptic curve group. Recently, several certificateless authenticated key agreement protocols without pairings were proposed to improve the performance. In this paper, we propose a new certificateless authenticated key agreement protocol without pairing. The user in our just needs to compute five scale multiplication to finish the key agreement. We also show the proposed protocol is secure in the random oracle model.

Metadata
Available format(s)
-- withdrawn --
Category
Public-key cryptography
Publication info
Published elsewhere. The paper has not published
Keywords
Certificateless cryptographyAuthenticated key agreementProvable securityBilinear pairingsElliptic curve
Contact author(s)
hedebiao @ 163 com
History
2011-08-01: withdrawn
2011-06-27: received
See all versions
Short URL
https://ia.cr/2011/347
License
Creative Commons Attribution
CC BY
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