Gottesman and Chuang Quantum Digital Signature: Difference between revisions

The [https://arxiv.org/abs/quant-ph/0105032 example protocol] achieves the functionality of [[Quantum Digital Signature|(Quantum) Digital Signatures (QDS)]] allowing the exchange of classical messages from sender to multiple recipients, with a guarantee that the signature has come from a genuine sender, using quantum memory. It comes with all the [[Quantum Digital Signature#Properties|Properties]] of QDS. Such protocols require parties to store quantum states for comparison at a later stage. For simplicity, most protocols take into account the case of one sender and two recipients (Seller, Buyer and Verifier) exchanging single-bit classical messages.