Improved authentication key exchange protocol without using one-way hash function

ABSTRACT

Recently, Hwang, Shiau and Lai proposed an efficient authentication key exchange protocol to decrease the computation cost of the Harn-Lin improved protocol. However, the Hawang-Shiau-Lai protocol cannot withstand the modification attack. Therefore, this paper will propose an improved protocol to enhance the security of the Hwang-Shiau-Lai protocol. The improved protocol is able to defeat the modification attack and is as efficient as the Hwang-Shiau-Lai protocol. Moreover, the improved protocol also provides the perfect forward secrecy.

REFERENCES

• 1: W. Diffie, and M. E. Hellman, "New directions in cryptography", IEEE Transactions on Information Theory, IT-22, NO. 6, 1976, pp. 644--654.
• 2: L. Harn, and H. Y. Lin, "An authenticated key agreement protocol without using one-way function", Proceedings of 8th Information Security Conference, Taiwan, May 1998, pp. 155--160.
• 3: L. Harn, and H. Y. Lin, "Authenticated key agreement without using one-way hash function", Electronics Letters, Vol. 37, NO. 10, 2001, pp. 629--630.
• 4: Ren-Junn Hwang , Sheng-Hua Shiau , Chih-Hua Lai, An Enhanced Authentication Key Exchange Protocol, Proceedings of the 17th International Conference on Advanced Information Networking and Applications, p.202, March 27-29, 2003
• 5: W. C. Ku and S. D Wang, "Cryptanalysis of modified authenticated key agreement protocol", Electronics Letters, Vol. 36, NO. 21, 2000, pp. 1770--1771.

INDEX TERMS

Keywords:
authentication, cryptography, key exchange, modification attack, security