Abstract
We propose a feasible and efficient dynamic multiparty quantum private comparison protocol that is fully secure against participant attacks. In the proposed scheme, two almost-dishonest third parties generate two random keys and send them to all participants. Every participant independently encrypts their private information with the encryption keys and sends it to the third parties. The third parties can analyze the equality of all or some participants’ secrets without gaining access to the secret information. New participants can dynamically join the protocol without the need for any additional conditions in the protocol. We provide detailed correctness and security analysis of the proposed protocol. Our security analysis of the proposed protocol against both inside and outside attacks proves that attackers cannot extract any secret information.
Highlights
We propose a feasible and efficient dynamic multiparty quantum private comparison protocol that is fully secure against participant attacks
(2) third party (TP) is dishonest such that all participants cannot trust the TP. This assumption is equivalent to the standard two-party quantum private comparison (QPC) protocols without a TP, whose insecurity was proved by Lo29
Since the proposed dynamic multiparty quantum private comparison protocol (DMQPC) protocol uses the same strategy as the two-party process, it is secure against outsider attacks
Summary
Hussein Abulkasim1,2,3*, Ahmed Farouk 1,4*, Safwat Hamad[6], Atefeh Mashatan1 & Shohini Ghose[4,5]. We propose a feasible and efficient dynamic multiparty quantum private comparison protocol that is fully secure against participant attacks. Chang et al proposed the first multiparty quantum private comparison (MQPC) protocol for comparing the equality of secrets of any two parties among M participants[40]. An MQPC protocol based on entanglement swapping of Bell states was subsequently presented[42] This scheme used the one-way hash function to address information leakage issue and to encrypt secret information between the communicating parties. Liu et al.[46] proposed a QPC protocol in which any participant can join dynamically to participate in the comparison of M participants These quantum private comparison protocols still suffer from low efficiency and an inadequate level of security. This work proposes a feasible, efficient, and secure dynamic multiparty quantum private comparison protocol (DMQPC) that uses single-photons to encode and send encrypted information.
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