Unentangled quantum blind signature method and system based on quantum walking
A quantum walk and blind signature technology, applied in transmission systems, digital transmission systems, and key distribution, can solve problems such as waste of resources, information leakage, and difficulty in preparation
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[0117] like figure 1 As shown, the quantum walk-based entanglement-free quantum blind signature method provided by the embodiment of the present invention includes three participants, the sender Alice, the signer Charlie, and the verifier Bob. The protocol involves four phases: initialization phase, blinding phase, signing phase and verification phase. Before the protocol starts, Alice and Bob share the key K in advance AB , Alice and Charlie share the key K in advance AC , Bob and Charlie share the secret key K in advance BC . These keys are distributed by the QKD protocol. Specifically include:
[0118] The first step, the initialization phase:
[0119]In the initialization phase, Alice, Charlie and Bob prepare some particles for the quantum walk system. Alice prepares a sequence of particles Ap for teleportation in the quantum walk system, where Ap=|0 1 0 2 0 3 ...0 n >. Charlie prepares a series of particle sequence Cp whose initial state is |0> state, which is...
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