An efficient two-party key exchange protocol with strong security |
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Authors: | Shaofeng Deng Yifa Li Yiqun Deng |
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Institution: | 1.Institute of Information Engineering,Information Engineering University,Zhengzhou,Henan, China |
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Abstract: | Combined public key (CPK) cryptography does not need certificates to guarantee the authenticity of public keys and avoids
the inherent key escrow problem of identity-based cryptography. Based on the efficient CPK scheme, we present an efficient
three-round two-party authenticated key exchange protocol with strong security, which is provably secure in the standard model
under the decisional Diffie-Hellman (DDH) assumption. The protocol can keep the session key secret from the adversary except
that one party’s ephemeral private key and static private key are all revealed to the adversary. Compared to the existing
protocols, this protocol not only assures strong security but also is more efficient. |
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Keywords: | |
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