Arbitrated quantum signature scheme based onχ-type entangled states
Hui-Juan Zuo, Wei Huang, Su‐Juan Qin · Physica Scripta · 2013
An arbitrated quantum signature scheme, which is mainly applied in electronic-payment systems, is proposed and investigated. The χ -type entangled states are used for quantum key distribution and quantum signature in this protocol. Compared with previous quantum signature schemes which also utilize χ -type entangled states, the proposed scheme provides higher efficiency. Finally, we also analyze its security under various kinds of attacks.