Quantum Cheques

Publicly-verifiable quantum money has been a central and challenging goal in quantum cryptography. In this study, we propose an alternative notion called 'quantum cheques' (QCs) that is more achievable and technologically practical. A quantum cheque can be verified using a public-key but only by a single user. Specifically, the payer signs the quantum cheque for a particular recipient using their ID, and the recipient can validate it without the assistance of the bank, ensuring that the payer cannot assign the …

called can cheque cryptography cs.cr goal key money notion public quant-ph quantum quantum cryptography single study verified