Cryptology ePrint Archive: Report 2003/122

Cryptanalysis of Al-Riyami-Paterson's Authenticated Three Party Key Agreement Protocols

Kyungah Shim

Abstract: Recently, Al-Riyami and Paterson proposed four authenticated tripartite key agreement protocols which make use of Weil pairing. In this paper, we show that the protocols are insecure against the man-in-the middle attack, key compromise impersonation attack and several known-key attacks.

Category / Keywords: cryptographic protocols / key management

Date: received 10 Jun 2003

Contact author: kashim at kisa or kr

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Version: 20030611:172521 (All versions of this report)

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