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Work item:
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X.sec-QKDN-tn
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Subject/title:
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Security requirements and designs for quantum key distribution networks - trusted node
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Status:
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[Carried to next study period]
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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-
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Equivalent number:
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-
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Timing:
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-
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Liaison:
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-
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Supporting members:
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-
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Summary:
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Quantum key distribution (QKD) enables two remote parties to share a common random binary key that is unknown to a potential eavesdropper. The information theoretic security (ITS) of QKD is based on the laws of quantum mechanics. QKD point-to-point link distance is fundamentally limited by an upper bound in theory.
In practice, QKD network based on trusted nodes have been widely adopted to enlarge the key distribution distance and enrich QKD based applications. The trustworthy concept of trusted node is a fundamental element to ensure the overall security in QKD network. The security of trusted node is usually assumed to be secure and out of reach of eavesdropper in its QKD network configurations while such assumption actually imposes various security requirements in practice.
Standardization activities of QKD network is under study in ITU-T SG13 and SG17 for network framework and security perspectives. While ETSI and ISO/IEC have been working on the security aspects of QKD devices. Despite these actives, as a key part of QKD network, trusted node and its security requirements have not yet been specifically addressed.
The objective of this Recommendation is to provide guidance on security requirements for trusted nodes in QKD networks. This Recommendation will identify the security threats and provide security requirements of trusted node, as well as some implementation examples to meet the requirements.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2019-09-12 16:19:19
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Last update:
2021-09-10 16:12:42
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