摘要

In the manuscript, we propose a novel quantum broadcasting multiparty blind signature scheme via quantum controlled teleportation. The four-particle cluster states play a role of the quantum channel in our scheme. An improved model of quantum one-time pads for encryption is introduced in the protocol, which ensures the quantum message is not to be tampered with. The security of our scheme is analyzed from the four aspects of blindness, traceability, undeniability and unforgeability.