Measurement Device Independent Quantum Digital Signature (MDI-QDS): Difference between revisions

The [https://arxiv.org/pdf/1704.07178.pdf example protocol] achieves the functionality of [[Quantum Digital Signature]] (QDS) by allowing exchange of messages using the procedure studied in [[Prepare and Measure Quantum Digital Signature]] but without trusting one's measurement devices, thus making the protocol device independent. It uses the security proof of [[MDI-QKD]] to the QDS scheme for insecure channels [[Measurement Device Independent Quantum Digital Signature (MDI-QDS)#References|(1)]]. The example protocol involves three parties and is designed for signing one bit and the authors suggest that longer messages can be signed by iterating the same process. All three conditions that define QDS i.e. non-repudiation, transferability and unforgeability are implied by the protocol.</br></br>