A Quantum Secret Sharing Scheme with High Efficiency Based on Bell States

To improve the security of quantum cryptography protocol and reduce its cost, this paper presented a new means after analyzing the process of the detection of eavesdropping, and offered a quantum secret sharing protocol to argue for it. Players employed the travel particles carrying secret messages to detect eavesdropping, and leaked nothing about secret messages. Investigation shows that players can make the quantum cryptography protocol not only with theoretic efficiency of 100%, but also secure in case of none checking particles made for detection of eavesdropping only.