Abstract
A new proxy blind signature scheme based on controlled quantum teleportation is presented in this paper. We present a scheme for teleporting an unknown two-particle entangled state with message from a sender (Alice) to a receiver (David) via a genuine six-qubit entangled state. In this scheme, we introduce a trusted third party to enhance security and effectively resist forgery attacks. One-way hash faction, Von-Neumann measurement and unitary operation are adapted in this scheme. Our scheme uses the physical characteristics of quantum mechanics to implement delegation, signature and verification. Moreover, quantum key distribution (QKD) protocol and one-time pad are adapted in this scheme.
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