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 [[https://arxiv.org/abs/1507.02975]]. This scheme 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 [[Quantum Digital Signature#Properties|properties]] that define QDS i.e. non-repudiation, transferability and unforgeability are implied by the protocol.</br></br>