An Arbitrated Proxy Blind Signature Based on Hyper Entanglement Analysis |
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Authors: | Xiaoping Lou Wensheng Tang Hua Ma Ming Yi |
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Institution: | 1.College of Information Science and Engineering,Hunan Normal University,Changsha,China;2.Hunan Province Cooperative Innovation Center for The Construction and Development of Dongting Lake Ecological Economic Zone,Changde,China |
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Abstract: | Motivated by the hyperentangled Bell states analysis, an arbitrated quantum proxy blind signature (QPBS) scheme is developed. Four participants accomplish the task of signing and verifying via exchanging the entanglement of polarization and spatial-mode degrees of freedom. Alice blinds message and sends it to a proxy signatory David who is delegated by the original signatory Charlie. David generates a signature using the delegating code while Bob verifies the signing with the help of an arbitrator Trent. Unlike previous schemes, the verifying phase is no longer executed only by a recipient. Analysis shows that when the even numbers of blinding string always equal 1, the scheme protects the proxy blind signature against forgery and disavow while maintaining the properties of verifiability and identifiability. |
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