2001/09/30 by Guihua Zeng, Christoph H. Keitel · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.65.042312
10 pages, no figures. Phys. Rev. A 65, (In press)
arxiv created 2002/02/04 · arxiv updated 2009/12/01
The general principle for a quantum signature scheme is proposed and investigated based on ideas from classical signature schemes and quantum cryptography. The suggested algorithm is implemented by a symmetrical quantum key cryptosystem and Greenberger-Horne-Zeilinger (GHZ) triplet states and relies on the availability of an arbitrator. We can guarantee the unconditional security of the algorithm, mostly due to the correlation of the GHZ triplet states and the use of quantum one-time pads.