A Novel Quantum Broadcasting Multiple Blind Signature Scheme Based on Multi-Particle Partial Entanglement

摘要

Recently, a quantum broadcasting multiple blind signature scheme has been proposed by using GHZ entanglement, which is claimed to have foreseeable application in E-bank system. However, its security is promised by the utilized hash function. In this paper, we have designed a novel quantum broadcasting multiple blind signature scheme by utilizing a three-particle partial entanglement state. In existed quantum broadcasting multiple blind signature schemes, the collector Charlie has to verify the individual signatures before aggregating them into a multi-signature. In this new scheme, Charlie is only acting as a signature collector. Specifically, Charlie only needs to collect all the individual signatures and aggregating them into a multi-signature, which indicates that Charlie has no need to verify the individual signature any more. All the verification are executed by the receiver Bob himself. Meanwhile, the signature is generated by quantum entanglement swapping rather than using hash function, which make its security is only based on quantum physics. It is showed that multi-particle partially entangled state can be efficiently used as a resource in quantum information processing with perfect performance.