Secure Certificateless Two-Party Key Agreement with Short Message
DOI:
https://doi.org/10.5755/j01.itc.45.1.12595Keywords:
two-party, certificateless, key agreement, eCK security model, public key systemAbstract
Two-party key agreement protocol allows two communication parties to share a common key for secure communication. Constructed from the certificateless public key cryptography (CL-PKC), a certificateless key agreement (CL-KA) protocol can not only solve the key escrow problem inherited from identity-based systems, but also avoid the troublesome issue of certificate management. Although the topic of two-party CL-KA has been extensively studied during past few years, it is unknown whether such a protocol can be achieved with only one exchanged message. In this paper, we put this idea into practice and propose a new one-round CL-KA for two-party. Specifically, each party of the proposed protocol only has to transmit one group element for sharing a session key and still maintains low computational costs. Moreover, we analyze the security of our scheme in the extended Canetti-Krawzcyk (eCK) security model.Published
2016-03-21
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Copyright terms are indicated in the Republic of Lithuania Law on Copyright and Related Rights, Articles 4-37.