Quantum authencryption: one-step authenticated quantum secure direct communications for off-line communicants

Authors:
Tzonelih Hwang;Yi-Ping Luo;Chun-Wei Yang;Tzu-Han Lin
Affiliations:
Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan City, Taiwan, ROC 70101;Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan City, Taiwan, ROC 70101;Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan City, Taiwan, ROC 70101;Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan City, Taiwan, ROC 70101
Venue:
Quantum Information Processing
Year:
2014

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Abstract

This work proposes a new direction in quantum cryptography called quantum authencryption. Quantum authencryption (QA), a new term to distinguish from authenticated quantum secure direct communications, is used to describe the technique of combining quantum encryption and quantum authentication into one process for off-line communicants. QA provides a new way of quantum communications without the presence of a receiver on line, and thus makes many applications depending on secure one-way quantum communications, such as quantum E-mail systems, possible. An example protocol using single photons and one-way hash functions is presented to realize the requirements on QA.