Liaison statement
LS/o on work progress on Quantum Key Distribution (QKD) network in SG13 (as of March 2021) [from ITU-T SG13]

State Posted
Submitted Date 2021-03-18
From Group ITU-T-SG-13
From Contact Gyu Lee
To Group opsawg
To Contacts Henk Birkholz
Joe Clarke
Tianran Zhou
CcOperations and Management Area Working Group Discussion List
Warren Kumari
Joe Clarke
Henk Birkholz
Robert Wilton
Scott Mansfield
Tianran Zhou
Response Contact Leo.Lehmann@ties.itu.int
Purpose For information
Attachments SG13-LS198
SG13-LS198_att4
SG13-LS198_att3
SG13-LS198_att2
SG13-LS198_att1
Body
ITU-T SG13 is pleased to inform you about our progress on Quantum Key
Distribution (QKD) topics. We informed you that SG13 has published 5
Recommendations on QKDN as follows: -       Recommendation ITU-T Y.3800
“Overview on networks supporting quantum key distribution”; -      
Recommendation ITU-T Y.3801 “Functional requirements for quantum key
distribution networks”; -       Recommendation ITU-T Y.3802 “Quantum key
distribution networks – Functional architecture”; -       Recommendation ITU-T
Y.3803 “Quantum key distribution networks – Key management”; -      
Recommendation ITU-T Y.3804 “Quantum key distribution networks - Control and
management”.

In the SG13 meeting (Virtual, 1-12 March 2021), Q16/13 has made progress of the
following work items.

1. The item consented after the December 2020 SG13 meeting
The corrigendum to ITU-T Y.3802 was consented.

Corrigendum 1, Recommendation ITU-T Y.3802 “Quantum key distribution networks -
Functional architecture” in TD388/PLEN

Corrigendum 1 to Recommendation ITU-T Y.3802 (2020) removes ‘IT-secure’ from
the definition of key management agent (KMA) link.

2. Revised on-going work items

Draft Recommendation ITU-T Y.QKDN_SDNC “Quantum key distribution networks -
Software defined networking control” in TD550/WP3

Recommendation ITU-T Y.QKDN_SDNC specifies the requirements, functional
architecture, reference points, hierarchical SDN controller, overall
operational procedures of SDN control, and controllable elements for SDN in
QKDN and security considerations.

Draft Recommendation ITU-T Y.QKDN_frint “Framework for integration of QKDN and
secure network infrastructures” in TD552/WP3

For quantum key distribution networks (QKDN), Recommendation ITU-T Y.QKDN_frint
specifies overview of secure storage networks (SSNs). It also specifies
functional requirements, functional architecture model, reference points and
phase-in scenarios for SSNs.

Draft Supplement ITU-T Y.supp.QKDN-mla “Quantum key distribution networks -
Applications of Machine Learning” in TD556/WP3

This Supplement studies the applications of machine learning (ML) in quantum
key distribution network (QKDN).

In particular, the scope of this draft Supplement includes:
-       Overview of ML applications in QKDN;
-       Applications of ML in QKDN at the quantum layer;
-       Applications of ML in QKDN at the key management layer;
-       Applications of ML in QKDN at the control and management layers.

Y.QKDN-SDNC is a candidate for consent and Y.supp.QKDN-mla is a candidate for
agreement at the July 2021 SG13 RGM.

3. Conclusion

SG13 will study the network aspects of QKD. Q16/13 looks forward to close
cooperation with ITU-T SG2, SG11, SG15, SG17, ETSI ISG-QKD, ISO/IEC JTC1/SC27,
AG4, IETF/IRTF, and relevant groups for future standardization on QKD networks.

Attachments:
1) Corrigendum 1 to Recommendation ITU-T Y.3802 (TD388/PLEN), Quantum key
distribution networks - Functional architecture; 2) The updated draft
Recommendation ITU-T Y.QKDN_SDNC (TD550/WP3), Quantum key distribution networks
- Software defined networking control; 3) The updated draft Recommendation
ITU-T Y.QKDN_frint (TD552/WP3), Framework for integration of QKDN and secure
network infrastructures. 4) The updated draft Supplement ITU-T Y.supp.QKDN-mla
(TD556/WP3), Quantum key distribution networks - Applications of machine
learning.