Group signature system based on quantum keys
A quantum key and group signature technology, which is applied in the field of cryptography, can solve the problems that the technology is difficult to adapt to the complex group signature environment, the efficiency of group signature is reduced, and the calculation amount of open operation is increased.
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[0042] Such as figure 1 As shown, a quantum key-based group signature method and system includes: quantum key generator 101, signature key 102, quantum group key generator 103, group key 104, quantum group signature module 105, group Signature 106, quantum group signature verification module 107.
[0043] The quantum key generator 101 is a quantum sequence device generated by a laser light source, preferably, it is composed of a laser source, a beam splitter, an encoding module, and a photon detector, and is used to generate a quantum sequence and its encoding; further Ground, the group manager CA divides the quantum sequence into two photons through the beam splitter, and sends the photons to the group manager CA and the group member Alice through the beam splitter to form the group manager CA and the newly joined group Member Alice's shared key K CA ; Similarly, when the group member Bob joins the group, the shared key K between the group manager CA and the newly joined gr...
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