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Cryptographic security of quantum key distribution
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This work is intended as an introduction to cryptographic security and a motivation for the widely used Quantum Key Distribution (QKD) security definition. We review the notion of security necessary for a protocol to be usable in a larger cryptographic context, i.e., for it to remain secure when composed with other secure protocols. We then derive the corresponding security criterion for QKD. We provide several examples of QKD composed in sequence and parallel with different cryptographic schemes to illustrate how the error of a composed protocol is the sum of the errors of the individual protocols. We also discuss the operational interpretations of the distance metric used to quantify these errors.
Forward citations
Cited by 6 Pith papers
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Spanning-tree-packing protocol for conference key propagation in quantum networks
Spanning-tree packing yields an optimal protocol for conference key generation from pairwise QKD links in arbitrary quantum network topologies.
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On Post-Quantum Cryptography Authentication for Quantum Key Distribution
PQC-based authentication protocols for QKD are proven secure in a hybrid adversary model, yielding information-theoretic keys only against a restricted adversary.
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Beyond the Quantum Promise: A Security Analysis of Classical Control in Quantum Key Distribution
Symbolic Tamarin models of standards-grounded QKD protocols reveal three control-plane vulnerabilities and confirm two countermeasures.
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Malleability of transformations on the ciphertext in noisy Quantum public key encryption
The claimed noisy generalization of QKD everlasting security reduces, in the paper's own text, to its definition of noisy everlasting security.
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Authentication in Quantum Networks
A literature review of authentication in quantum networks concludes that it is not an intrinsic limitation but depends on explicit resources and deployment assumptions.
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Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs
Overview of recent analytical and numerical developments in QKD security proofs that incorporate imperfections to re-establish security under realistic conditions.
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