Prepare and Measure Quantum Digital Signature: Difference between revisions

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* sa : authentication threshold per qubit.
* sa : authentication threshold per qubit.
* sv : (sa < sv) verification threshold per qubit.
* sv : (sa < sv) verification threshold per qubit.
===Setup Assumptions===
* The protocol assumes authenticated quantum channels between all seller-receiver pairs.
* The protocol assumes authenticated classical channels between all parties.
===Performance===
===Performance===
* The protocol provides security against repudiation, i.e. the probability that seller succeeds in making buyer and seller disagree on the validity of her sent quantum signature decays exponentially with L, as stated by the formula P(rep)≤ e−(sv−sa)2L.
* The protocol provides security against repudiation, i.e. the probability that seller succeeds in making buyer and seller disagree on the validity of her sent quantum signature decays exponentially with L, as stated by the formula P(rep)≤ e−(sv−sa)2L.
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