Arbitration quantum signature method based on XOR encryption

Abstract

The invention discloses an arbitration quantum signature method based on XOR encryption. The method comprises a signer Alice, a receiver Bob, an arbiter Trent and a three-particle GHZ state quantum key shared by the three parties, the three-particle GHZ state is an entangled resource commonly used in quantum communication, and the signature method comprises the following steps: an initialization stage, a signature stage and a verification stage. The signer Alice, the receiver Bob and the arbiter Trent share the three-particle GHZ state and respectively keep own particle information secret; byusing a traditional XOR encryption and decryption method, a quantum message is encrypted and signed by sharing the GHZ state; by introducing a decoy photon state, the flow of a conventional arbitration quantum signature protocol is improved, the requirements of unforgeability and non-repudiation are met, and finally, it can be seen that encryption of the protocol does not involve a complex encryption method or complex quantum operation, so that the method is more practical than other methods.

Description

technical field [0001] The invention relates to the technical field of quantum cryptography, in particular to an arbitration quantum signature method based on XOR encryption. Background technique [0002] With the development of AQS research work, some researchers began to study the security of the protocol. In 2011, Gao et al. pointed out that AQS based on quantum one-time pad encryption has a security loophole. This is because the Pauli operations used in encryption are commutative, so a recipient can forge a quantum signature. Subsequently, Choi et al. proposed an AQS protocol that is resistant to the attack method reported by Gao et al. This is based on improved QOTP encryption. However, Zhang et al. pointed out that this method cannot prevent the recipient from forging the signature. Instead, they leveraged Zhou's idea of ​​mixed-key quantum cryptography to devise a multiple encryption method that could be applied to quantum signature protocols. In 2015, Li et al. ...

AI Technical Summary

Problems solved by technology

In 2011, Gao et al. pointed out that there is a security loophole in AQS based on quantum one-time pad encryption.

Although the security performance has been improved, it needs to consume more quantum resources and quantum operations, which increases the difficulty of practical application. Therefore, we propose an arbitration quantum signature method based on XOR encryption to solve the above problems

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