Counterfactual quantum certificate authorization

We present a multi-partite protocol in a counterfactual paradigm. In counterfactual quantum cryptography, secure information is transmitted between two spatially separated parties even when there is no physical travel of particles transferring the information between them. We propose here a triparti...

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Bibliographic Details
Published in:arXiv.org 2014-06
Main Authors: Akshata, Shenoy H, Srikanth, R, Srinivas, T
Format: Article
Language:English
Subjects:
Data encryption
Quantum cryptography
Trusted third parties
Online Access:Get full text
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Summary:We present a multi-partite protocol in a counterfactual paradigm. In counterfactual quantum cryptography, secure information is transmitted between two spatially separated parties even when there is no physical travel of particles transferring the information between them. We propose here a tripartite counterfactual quantum protocol for the task of certificate authorization. Here a trusted third party, Alice, authenticates an entity Bob (e.g., a bank) that a client Charlie wishes to securely transact with. The protocol is counterfactual with respect to either Bob or Charlie. We prove its security against a general incoherent attack, where Eve attacks single particles.
ISSN:2331-8422
DOI:10.48550/arxiv.1402.2250