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Dynamic Quantum Proxy Blind Signature Scheme with Cluster State

As the quantum proxy blind signature provides the anonymity protection for message owner, it can be applied to the fields of E-business, E-government and etc. However, the existing quantum proxy blind signature schemes have not considered the issue of the dynamic property of the proxy signers. In this paper, we propose a dynamic quantum proxy blind signature scheme with cluster states using the measurement property of Greenberger-Horne-Zeilinger state and the controlled-NOT gate. The scheme can remove any authorized proxy signers from the proxy group and add new proxy signers into the proxy group. The correlation of cluster states is served as the verification criteria to guarantee the security of the scheme.