Signing Perfect Currency Bonds

Abstract

We propose the idea of a Quantum Cheque Scheme, a cryptographic protocol in which any legitimate client of a trusted bank can issue a cheque, that cannot be counterfeited or altered in anyway, and can be verified by a bank or any of its branches. We formally define a Quantum Cheque and present the first Unconditionally Secure Quantum Cheque Scheme and show it to be secure against any no-signaling adversary. The proposed Quantum Cheque Scheme can been perceived as the quantum analog of Electronic Data Interchange, as an alternate for current e-Payment Gateways.

6 pages, 2 figures

References in corpus (3)

• The Quantum Internet
• Quantum Memories. A Review based on the European Integrated Project "Qubit Applications (QAP)"
• An online attack against Wiesner's quantum money

Cited by in corpus (9)

• Tools for quantum network design
• Experimental realization of quantum cheque using a five-qubit quantum computer
• Automated Error Correction in IBM Quantum Computer and Explicit Generalization
• Nondestructive discrimination of a new family of highly entangled states in IBM quantum computer
• Experimental demonstration of the violations of Mermin's and Svetlichny's inequalities for W- and GHZ-class of states
• Quantum Locker Using a Novel Verification Algorithm and Its Experimental Realization in IBM Quantum Computer
• Practically feasible robust quantum money with classical verification
• Practical quantum tokens without quantum memories and experimental tests
• Security Analysis of Ensemble-Based Quantum Token Protocol Under Advanced Attacks