Simple Proof of Security of the multiparty Prepare and Measure QKD
arXiv:2204.05215 · doi:10.1007/s11128-022-03691-7
Abstract
The majority of research to date has concentrated on the quantum key distribution (QKD) between two parties. In general, the QKD protocols proposed for the multiparty scenario often involve the usage of a maximally entangled state, such as GHZ, which is challenging to implement in practice. This paper examines the prepare and measure version of multiparty communication through quantum key distribution. It is sufficient to have the capability of preparing and measuring a single qubit state. The security of the multiparty prepare and measure QKD is demonstrated by utilizing the well-known techniques of quantum error correction and entanglement purification. We begin by establishing the security of the entangled-based version and progress through a series of reductions to arrive at our equivalent multiparty prepare and measure version of QKD. We establish the security proof of multiparty entangled-based version by combining FTQC and classical statistics on the GHZ basis. Then proved the conditional security of the multiparty prepare-and-measure QKD by the equivalency.
24 pages, 2 tables
References in corpus (9)
- Quantum cryptography: Public key distribution and coin tossing
- Long-Distance Measurement-Device-Independent Multiparty Quantum Communication
- Experimental Quantum Secret Sharing and Third-Man Quantum Cryptography
- Quantum digital signatures with quantum key distribution components
- Quantum multiparty key distribution protocol without use of entanglement
- Tripartite entanglement: Foundations and applications
- Phase-Matching Quantum Cryptographic Conferencing
- Quantum Blockchain Based on Dimensional Lifting Generalized Gram-Schmidt Procedure
- Dissipative quantum repeater