Identity-Based Authenticated Key Agreement Protocols without Bilinear Pairings

Xuefei CAO; Weidong KOU; Yong YU; Rong SUN

doi:10.1093/ietfec/e91-a.12.3833

Regular Section

Identity-Based Authenticated Key Agreement Protocols without Bilinear Pairings

Xuefei CAO, Weidong KOU, Yong YU, Rong SUN

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Keywords: identity-based cryptography, authenticated key agreement, bilinear pairing, elliptic curve

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2008 Volume E91.A Issue 12 Pages 3833-3836

DOI https://doi.org/10.1093/ietfec/e91-a.12.3833

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Abstract

This letter proposes an identity-based authenticated key agreement protocol. Different from available comparable ones, the new protocol realizes implicit authentication without bilinear pairings which makes it more efficient. The security of proposed protocol can be reduced to the standard Computational Diffie-Hellman problem. Two variants of the protocol are also given, with one achieving the security-efficiency trade-off and the other providing authenticated key agreement between users of different domains.

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