A Verifiable Arbitrated Quantum Signature Scheme Based on Controlled Quantum Teleportation

Area of Science:

• Quantum Information Science
• Cryptography
• Quantum Computing

Background:

• Quantum signature schemes offer enhanced security over classical methods.
• Controlled quantum teleportation provides a robust framework for quantum communication.

Purpose of the Study:

• To propose a verifiable arbitrated quantum signature scheme.
• To leverage controlled quantum teleportation for secure digital signatures.
• To ensure non-repudiation and authentication in quantum communication.

Main Methods:

• Utilizing a five-qubit entangled state as a quantum channel.
• Employing mutually unbiased bases particles as decoy particles.
• Performing unitary operations with symmetric bivariate polynomials for security.

Main Results:

• Successful implementation of eavesdropping detection.
• Effective identity authentication through quantum means.
• Demonstrated security against forgery and denial by signatories or verifiers.

Conclusions:

• The proposed quantum signature scheme is verifiable and secure.
• It effectively prevents disavowal by the signatory and denial by the verifier.
• The scheme offers robust protection against malicious attackers in quantum networks.