Restricted attacks on semi-quantum key distribution protocols

In this paper, we investigate single-state, semi-quantum key distribution protocols. These are protocols whereby one party is limited to measuring only in the computational basis, while the other, though capable of measuring in both computational and Hadamard bases, is limited to preparing and sendi...

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Bibliographic Details
Published in:Quantum information processing 2014-11, Vol.13 (11), p.2417-2436
Main Author: Krawec, Walter O.
Format: Article
Language:English
Subjects:
Applied sciences
Classical and quantum physics: mechanics and fields
Computer science
control theory
systems
Cryptography
Data Structures and Information Theory
Exact sciences and technology
Information, signal and communications theory
Mathematical Physics
Memory and file management (including protection and security)
Memory organisation. Data processing
Physics
Physics and Astronomy
Quantum computation
Quantum Computing
Quantum cryptography
Quantum information
Quantum Information Technology
Quantum Physics
Signal and communications theory
Software
Spintronics
Telecommunications and information theory
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Description
Summary:In this paper, we investigate single-state, semi-quantum key distribution protocols. These are protocols whereby one party is limited to measuring only in the computational basis, while the other, though capable of measuring in both computational and Hadamard bases, is limited to preparing and sending only a single, publicly known qubit state. Such protocols rely necessarily on a two-way quantum communication channel making their security analysis difficult. However, we will show that, for single-state protocols, we need only consider a restricted attack operation by Eve. We will also describe a new single-state protocol that permits “reflections” to carry information and use our results concerning restricted attacks to show its robustness.
ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-014-0802-2