A symmetric extensible protocol for quantum secret sharing

Abstract

This paper introduces the Symmetric Extensible Quantum Secret Sharing protocol, which is a novel quantum protocol for secret sharing. At its heart, it is an entanglement based protocol that relies on the use of maximally entangled GHZ tuples, evenly distributed among the players, endowing the spymaster with the ability to securely share a secret message with her agents. It offers uncompromising security, making virtually impossible for a malicious eavesdropper or a rogue double agent to disrupt its successful execution. It is characterized by symmetry, since all agents are treated indiscriminately, utilizing identical quantum circuits. Furthermore, it can be seamlessly extended to an arbitrary number of agents. After the completion of the quantum part of the protocol, the spymaster will have to publicly transmit some information, in order to enable the agents to discover the secret message. Finally, it has the additional advantage that the spymaster has the privilege to decide when it is the right time for the agents to discover the secret message.

References in corpus (3)

• Long-Distance Measurement-Device-Independent Multiparty Quantum Communication
• Experimental demonstration of graph-state quantum secret sharing
• QKD based on symmetric entangled Bernstein-Vazirani

Cited by in corpus (8)

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• A Multiparty Quantum Private Equality Comparison scheme relying on $|GH{Z}_3⟩$ states
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• One-to-Many Simultaneous Secure Quantum Information Transmission
• A distributed and parallel $(k,n)$ QSS scheme with verification capability
• Quantum Tapsilou -- a quantum game inspired from the traditional Greek coin tossing game tapsilou
• A novel $2$ \& $3$ player scheme for Quantum Direct Communication