Strong blind quantum signature protocol based on pure W-like state
基于纯W-like态的量子强盲签名协议

Aiming at pure three-qubit states and the measure of entanglement, this paper proposed pure W-like state. Based on pure W-like state, this paper proposed a strong blind quantum signature protocol. The protocol adopted the quantum key distribution, the quantum fingerprint and one-time pad. The protocol ensures that the signature is blind and the message owner is untraceable. Moreover, the protocol provides the unconditionally security, lower complexity and best quantum bit efficiency. This protocol is a novel method for constructing the strong blind quantum signature protocol.