A Quantum Proxy Signature Scheme by Using Random Sequence to Blind the Message

A quantum proxy signature scheme by using random sequence to blind the message is proposed. Our scheme introduces the trusted party Trent and enhances the eavesdropping check to ensure higher security. It only uses the Von Neumann measurement, which reduces measurement times and improves efficiency. Meanwhile, our scheme uses random sequence to enhance message’s blindness. We use the physical characteristics of quantum mechanics to guarantee scheme’s blindness, unconditional security, unforgeability, undeniability.