Quantum digital signature is the quantum scenario of classical digital signature.It makes use of quantum effects to provide unconditionally secure signature.We first present a prototype of quantum signature scheme usi...Quantum digital signature is the quantum scenario of classical digital signature.It makes use of quantum effects to provide unconditionally secure signature.We first present a prototype of quantum signature scheme using single photons and then discuss its extensions.The most important property of the proposed scheme is that it is not necessary for the scheme to use entangled states.The security of the scheme is based on quantum key distribution and quantum one-time pad proved as unconditionally secure.The present scheme is efficient in that it needs only single photons and von Neumann measurement.We also show a quantum circuit for the scheme.展开更多
基金Supported by the National Natural Science Foundation of Chinaunder Grant No.60472032
文摘Quantum digital signature is the quantum scenario of classical digital signature.It makes use of quantum effects to provide unconditionally secure signature.We first present a prototype of quantum signature scheme using single photons and then discuss its extensions.The most important property of the proposed scheme is that it is not necessary for the scheme to use entangled states.The security of the scheme is based on quantum key distribution and quantum one-time pad proved as unconditionally secure.The present scheme is efficient in that it needs only single photons and von Neumann measurement.We also show a quantum circuit for the scheme.
