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Quantum Information Processing

High-efficiency semi-quantum three-party identity authentication: a GHZ-like state and chaotic sequence-based scheme

Ningning Xu, Ho Yin Kan, Peng Guo, Quanying Fan, Hongfeng Zhu

Published Apr 29, 2026• 1 citation
Publisher
DOI
10.1007/s11128-026-05174-5

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Abstract There is an intuitive connection between GHZ-like states and Cross-domain architecture. Such a connector may lead to a novel way to construct mutual authentication and efficient key agreement protocols between any two clients in arbitrary domain. In this paper, we present a novel rule to link the double-GHZ-Like states which are prepared by the two domain servers respectively. The protocol involves four parties, including two servers and two participants. In this protocol, according to the measured correlation of three-particle entangled state, the communication parties realize mutual authentication by means of the three-particle GHZ-like state prepared by the server. In addition, with the measurement results published by the servers, the two participants perform the double CNOT operations on the corresponding particle sequence according to the negotiation results, and conduct quantum dialogue through the encrypted information held by each other. This is the first time to propose a four-party cross-domain combination of two three-particle GHZ-like states, and to realize the mutual authentication and quantum dialogue of the two-party participants through the corresponding rules. Security analysis shows that the new protocol can resist common external and internal attacks. Compared with the existing two-party or multi-party protocols, this protocol has feasible efficiency.