Quantum Signature Protocol without the Trusted Third Party

Details Quantum Signature Protocol without the Trusted Third Party Quantum Signature Protocol without the Trusted Third Party

2005-09-20

arxiv.org/abs/quant-ph/0509129v2

Physics

Quantum Physics

5 pages

Scientific paper

An authentic digital signature scheme based on the correlation of Greenberger-Horne-Zeilinger (GHZ) states was presented. In this scheme, by performing a local unitary operation on the third particles of each GHZ triplet, Alice can encode message M and get its signature S. Bob performs CNOT operation on the combined GHZ triplets can recovery the message M and directly authenticates Alice's signature S. Our scheme was designed to use quantum secret key to guaranteed unconditional security, as well as use quantum fingerprinting to avoid trick attacks and reduce communication complexity.

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