Editing Arbitrated Quantum Digital Signature
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==Assumptions== | ==Assumptions== | ||
* The protocol assumes perfect state preparation, transmissions, and measurements. | * The protocol assumes perfect state preparation, transmissions, and measurements. | ||
* Private-key generation (PKG) is a trusted | * Private-key generation (PKG) is the arbitrator which is a trusted party. The master key and the identity of the Seller is kept secret by PKG. | ||
* In the signing process, the [[Glossary#Quantum One Way Function|quantum one-way function]] used to create the quantum digest is assumed to take polynomial time to compute and is hard to invert. | * In the signing process, the [[Glossary#Quantum One Way Function|quantum one-way function]] used to create the quantum digest is assumed to take polynomial time to compute and is hard to invert. | ||
* Seller and PKG are assumed to have a pre-shared quantum key (say, using [[Quantum Key Distribution|QKD]]) | * Seller and PKG are assumed to have a pre-shared quantum key (say, using [[Quantum Key Distribution|QKD]]) |