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Arbitrated Quantum Digital Signature: Difference between revisions
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** The buyer performs some quantum gates on the signature quantum state, using seller's public key and message. He measures the resulting quantum state, using basis states for each qubit sent in the signature. The result thus, obtained is represnted by a classical string, in the same way as done by seller. | ** The buyer performs some quantum gates on the signature quantum state, using seller's public key and message. He measures the resulting quantum state, using basis states for each qubit sent in the signature. The result thus, obtained is represnted by a classical string, in the same way as done by seller. | ||
**The result should reveal the random string used by seller and hence, buyer can also generate the same number of copies of the quantum digest using the publicly known QOWF. | **The result should reveal the random string used by seller and hence, buyer can also generate the same number of copies of the quantum digest using the publicly known QOWF. | ||
**Buyer, thus, compares his outputs of QOWF with the ones sent by the seller using [[quantum SWAP Test]]. If the number of matches is greater than the accepted/decided threshold value, the signature is accepted else it is rejected. | **Buyer, thus, compares his outputs of QOWF with the ones sent by the seller using [[Glossary#SWAP test|quantum SWAP Test]]. If the number of matches is greater than the accepted/decided threshold value, the signature is accepted else it is rejected. | ||
==Notation== | ==Notation== | ||