A tamper-resistant controlled quantum-secure direct communication method and system

Abstract

The invention belongs to the technical field of secure communication, and discloses a tamper-proof controlled quantum security direct communication method and system. In order to control the receiving end to obtain the secret information of the sending end, the sending end sends S C * to the control terminal; the control terminal scrambles S C * The sequence of photons in the medium; then the control end sends the sequence rearranged S C * to the receiving end; if the controlling end does not tell the receiving end the correct sequence of photons, the receiving end cannot recover S C And decrypt the secret information; the control end also cannot know that with K(k 1 ,k 2 ,...,k N ) encrypted secret information, etc. The present invention does not require the premise of an honest controller; even if the controller is dishonest, the protocol proposed by the present invention is still safe, and any tampering of secret information can be easily discovered. The invention can resist pseudo-photon attack based on teleportation, and can also verify the identities of two participants (sender and receiver).

Description

technical field [0001] The invention belongs to the technical field of safe communication, and in particular relates to a tamper-proof controlled quantum safe direct communication method and system. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Generally, it is hoped that the secret information is safely transmitted to the receiver, and the receiver can read the secret information correctly. However, in some special occasions or tasks, besides the sender and receiver, there is at least one controller. Only when all controllers agree, the recipient can correctly read the secret information sent by the sender. A quantum solution to the above task is a typical application called: controlled quantum-safe direct communication. Therefore, the security analysis of controlled quantum secure direct communication mainly falls on the answers to the following three questions: (1) Can external eavesdroppers ...

AI Technical Summary

Problems solved by technology

[0007] In the security analysis of the existing controlled quantum secure direct communication protocol, two aspects of security are considered: the receiver cannot recover the secret information without the permission of the controller and the external eavesdropper cannot obtain the secret information. They conduct research on the premise that the controller is honest and credible, but in fact, in many cases, the controller is not necessarily honest and credible, and the controller may also have some malicious behaviors for the purpose of tampering or obtaining secret information, and this behavior may will not be discovered, therefore, a controlled quantum-safe direct communication protocol based on the premise that the controller is honest and trustworthy is insecure

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