Semi-quantum-honest key agreement scheme with three-particle entangled states in cross-realm setting

Abstract

Semi-quantum cryptography was proposed to deal with the issue that some players are only able to perform classical operations, thus alleviating the cost of its implementation. For achieving the better universal setting for current environment, we propose a mutual authenticated semi-quantum-honest key agreement scheme with three-particle entangled states in cross-domain setting, which means in different realm’s client can get the session key by his/her own server helping, while anyone else cannot get the session key except for the two clients. In addition, we assume that there is no fully trusted party and that all parties are semi-honest. More important, by the third party’s helping with three-particle entangled states and the four rules, the third party, two servers and two clients can authenticate each other. The proposed scheme has the properties of completeness, information-theoretic security, non-repudiation and unforgeability. On the other hand, our scheme is more efficient than the similar schemes.