Scalable Arbitrated Quantum Signature of Classical Messages with Multi-Signers
Yu‐Guang Yang, Wang Yuan, Yi-Wei Teng, Hai-Ping Chai, Wen Qiao-yan · Communications in Theoretical Physics · 2010
Unconditionally secure signature is an important part of quantum cryptography. Usually, a signature scheme only provides an environment for a single signer. Nevertheless, in real applications, many signers may collaboratively send 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 and proved to be secure even with a compromised arbitrator.