Scalable Arbitrated Quantum Signature of Classical Messages with Multi-Signers

摘要

Unconditionally secure signature is an important part of quantum cryptography.Usually,a signature schemeonly provides an environment for a single signer.Nevertheless,in reai applications,many signers may collaborativelysend a message to the verifier and convince the verifier that the message is actually transmitted by them.In this paper,we give a scalable arbitrated signature protocol of classical messages with multi-signers.Its security is analyzed andproved to be secure even with a compromised arbitrator.