Arbitrated Quantum Signature Method Based on Quantum Walk Teleportation

Abstract

The invention discloses an arbitration quantum signature method based on quantum wandering stealth transmission, which comprisesan initialization phase for preparing a key and setting a system, a signature phase for constructing a signature of a transmission message, and a verification phase for verifying the validity of the signature, authenticity of the message source, and integrity of the message.The method of the invention adopts the stealth teleportation based on the quantum wandering to transmit the d-dimensional quantum state, and the entanglement source used for the stealth transmission does not need to be prepared in advance, thus saving the overhead of preparing the entangled state specially; Moreover, it is more efficient to measure with two projections of d elements. At the same time, the introduction of random parameters prevents the verifier from obtaining the content of the transmitted information and denying the signer's signature before accepting the signed information. In addition, the public board is used to publish the random parameters, and the verifier can obtain the information content of the signature after the verification is completed. Finally, the methodof the invention has the characteristics of saving resources, high measuring efficiency, easy realization of the laboratory and high signature security.

Description

technical field [0001] The invention belongs to the field of quantum communication, and in particular relates to an arbitration quantum signature method based on quantum walk teleportation. Background technique [0002] With the development of information technology, electronic certification has become one of the most important links in people's daily production and life. [0003] In a real society full of contradictions and conflicts of interests, various identity frauds, forgery and tampering of messages exist in large numbers. In order to reduce or avoid the occurrence of these situations, it is necessary to establish a reliable authentication system. The purpose of building an authentication system mainly includes two points: first: to verify the identity of the user and prevent counterfeiting; second: to ensure the authenticity of the message source and the integrity of the message, and to prevent the message from being forged and tampered by attackers. Signature is an...

AI Technical Summary

Problems solved by technology

However, when designing this signature method, it is necessary to prepare the entangled state in advance, which is inconvenient to use, and it needs to be d 2 A single joint measurement of elements, its efficiency is relatively low, and it is relatively difficult to implement

In addition, this type of signature also faces existential attacks from the receiver in a known information environment

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