[OPSAWG] New Liaison Statement, "LS on work progress on Quantum Key Distribution (QKD) network in SG13 (as of July 2023)"

[Liaison Statement Management Tool <[e-mail]>]

Title: LS on work progress on Quantum Key Distribution (QKD) network in SG13 (as of July 2023)
Submission Date: 2023-08-28
URL of the IETF Web page: https://datatracker.ietf.org/liaison/1857/

From: Tatiana Kurakova <[e-mail]>
To: Henk Birkholz <[e-mail]>,Joe Clarke <[e-mail]>,Tianran Zhou <[e-mail]>
Cc: Joe Clarke <[e-mail]>,Scott Mansfield <[e-mail]>,Operations and Management Area Working Group Discussion List <[e-mail]>,Robert Wilton <[e-mail]>,Tianran Zhou <[e-mail]>,Henk Birkholz <[e-mail]>,Warren Kumari <[e-mail]>
Response Contacts: [e-mail]
Technical Contacts: 
Purpose: For information

Body: ITU-T SG13 Working Parties 1/13 and 3/13 are pleased to inform you of our progress on Quantum Key Distribution (QKD) topics.

SG13 has published 15 Recommendations and 3 Supplements 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”;
- Recommendation ITU-T Y.3805 “Quantum Key Distribution Networks - Software Defined Networking Control”;
- Recommendation ITU-T Y.3806 “Quantum key distribution networks - Requirements for quality of service assurance”;
- Recommendation ITU-T Y.3807 “Quantum Key Distribution networks - QoS parameters”;
- Recommendation ITU-T Y.3808 “Framework for integration of quantum key distribution network and secure storage network”;
- Recommendation ITU-T Y.3809 “A role-based model in quantum key distribution networks deployment”;
- Recommendation ITU-T Y.3810 “Quantum key distribution network interworking - Framework”;
- Recommendation ITU-T Y.3811 “Quantum key distribution networks - Functional architecture for quality of service assurance”;
- Recommendation ITU-T Y.3812 “Quantum key distribution networks - Requirements for machine learning based quality of service assurance”;
- Recommendation ITU-T Y.3813 “Quantum key distribution networks interworking – functional requirements”;
- Recommendation ITU-T Y.3814 “Quantum key distribution networks - functional requirements and architecture for machine learning enablement”;
- Supplement ITU-T Y.Sup70 to Y.3800-series “Quantum Key Distribution Networks - Applications of Machine Learning”;
- Supplement ITU-T Y.Sup74 to Y.3000-series “Standardization roadmap on Quantum Key Distribution Networks”;
- Supplement ITU-T Y.Sup75 to Y.3800-series “Quantum key distribution networks - Quantum-Enabled Future Networks”.


1. The Recommendations consented at the July 2023 WP1/13 and WP3/13 meetings

The draft Recommendations ITU-T Y.3818 (Y.QKDN-iwac), Y.3815 (Y.QKDN-rsfr), Y.3816 (Y.QKDN-qos-ml-fa), and Y.3817 (Y.QKDN-qos-iw-req) were consented. 

Recommendation ITU-T Y.3818 (Y.QKDN-iwac) “Quantum key distribution networks interworking - architecture” in TD300/WP3

For quantum key distribution networks (QKDN), Recommendation ITU-T Y.QKDN_iwac specifies functional architecture for QKDNi.

Recommendation ITU-T Y.3815 (Y.QKDN-rsfr) “Quantum key distribution networks – overview of resilience” in TD301/WP3

For quantum key distribution network (QKDN), this recommendation describes an overview of QKDN resilience with models of QKDN protection and recovery.

Recommendation ITU-T Y.3816 (ex. Y.QKDN-qos-ml-fa) “Quantum key distribution networks – Functional architecture enhancement of machine learning based quality of service assurance” in TD461/WP1

For quantum key distribution network (QKDN), this recommendation describes functional architecture enhancement of machine learning based quality of service assurance.

Recommendation ITU-T Y.3817 (ex. Y.QKDN-qos-iw-req) “Quantum key distribution networks interworking – requirements for quality of service assurance” in TD463/WP1
For quantum key distribution network (QKDN), this recommendation describes requirements for quality of service assurance in QKDNi.


2.Revised on-going work items after March 2023 SG13 meeting

Draft Recommendation ITU-T Y.QKDNi_SDNC “Quantum Key Distribution Network Interworking – Software Defined Networking Control” in TD304/WP3

This draft Recommendation specifies the Software Defined Network control for the interworking including the overview of the role of SDN control for the interworking between QKDN providers, the functional entities of SDN control for the interworking, the interfaces of SDN control for the interworking, the functional requirements of SDN control for the interworking, and the security considerations.

Draft Recommendation ITU-T Y.QKDNf_fr “Framework of Quantum Key Distribution Network Federation” in TD305/WP3

This draft Recommendation specifies the framework of Quantum Key Distribution Network Federation (QKDNf) including the overview of QKDNf, reference architecture for enabling QKDNf, functional entities of QKDNf, reference points for the QKDNf, functional requirements of the QKDNf, overall operational procedures of QKDNf and security considerations.

Draft Recommendation ITU-T Y.QKDN-AMC “Quantum key distribution networks - Requirements and architectural model for autonomic management and control" in TD306/WP3

Autonomic Management and Control (AMC) is about Decision-making-Elements (DEs) as autonomic functions (i.e. control-loops) with cognition introduced in the management layer as well as in the control layer. Cognition in DEs, enhances DE logic and enables DEs to manage and handle even the unforeseen situations and events detected in the environment around the DE(s). As the number and diversity of devices that make up the individual QKDNs continue to grow, automating QKDN control and management tasks becomes ever-more important to improve the quality of services (QoS).

To cope with the challenges of QKDN control and management, while minimizing human intervention towards full automation of QKDN, this draft Recommendation specifies the requirements and architectural models for AMC in QKDNs including the overview, requirements, consideration for cognition process and architectural model.

Draft Technical Report ITU-T TR-QN-UC “Use cases of quantum networks beyond QKDN” in TD307/WP3
Based on the deliverable (D1.2) of the ITU-T Focus Group on Quantum Information Technology for Networks (FG QIT4N), this Technical Report sorts and analyses use cases of quantum networks beyond QKDN collected from FG QIT4N in the context of networking technologies as the mandate of ITU-T SG13. 

The uses cases which are only applied by quantum networks beyond QKDN are collected, investigated and summarized; all use cases are analysed by current bottlenecks, application scenarios, technical requirements and solutions. This Technical Report also provides analyses for future applications and potential standardization requirements.

Draft Supplement ITU-T Y.supp.QKDN-UC “Use cases of quantum key distribution networks” in TD308/WP3

Based on the deliverable (D2.2) of the ITU-T Focus Group on Quantum Information Technology for Networks (FG QIT4N), this Supplement consolidates the QKDN use cases collected from the ITU-T FG QIT4N in the context of networking technologies as the mandate of ITU-T SG13. 

Through a comprehensive analysis, the QKDN uses cases are classified into several classes and this Supplement highlights the competitive advantage of the use cases brought by QKDN and provides suggestions for future standardization efforts in ITU-T SG13.

Draft Recommendation ITU-T Y.QKDN-TSNfr “Framework for integration of quantum key distribution network and time sensitive network " in TD310/WP3

This Recommendation specifies the framework for integration of quantum key distribution network (QKDN) and time sensitive network (TSN) including the overview and scenarios of QKDN and TSN integration, the network capabilities to support QKDN and TSN integration, the conceptual structure and basic functions of QKDN and TSN integration, and its overall operational procedures and security considerations. 

Draft Recommendation ITU-T Y.QKDN-rsrq “Requirements for quantum key distribution network resilience” in TD309/WP3

For quantum key distribution networks (QKDN), Recommendation ITU-T Y.QKDN-rsrq specifies the general requirements for resilience, and separately specifies the supporting requirements for protection and recovery.

Draft Technical Report on "Overview for integration of quantum key distribution network with non-quantum cryptographies” in TD311/WP3 

This report provides the overview for integration of quantum key distribution network with non-quantum cryptographies under three categories as follows:

- QKDN’s relation to end-to-end cryptography service
- Service Scenarios for the integration with non-quantum cryptography (e.g., PKI architecture)
- Implications for standardization activity on Study Group 13


3. New work items agreed at the July 2023 WP3/13 meeting 
Proposed amendments to ITU-T Y.3802: “Functional architecture of quantum key distribution” in TD316/WP3

This WI will develop an amendment to Y.3802 as follows;
- to add a reference point of Mx in clause 8.4 Reference points on a QKDN manager;
- to revise Figure 1 – A functional architecture model of QKDN in clause 6 Functional architecture model to include the Mx reference point and an editorial correction on key relay.
Proposed amendments to ITU-T Y.3803: “Quantum key distribution networks – Key management” in TD317/WP3

This WI will develop an amendment to Y.3803 as follows;
- to revise Figure 2 of Y.3803 – A functional architecture model of QKDN in clause 7 Functional elements of key management to include the Mx reference point and an editorial correction on key relay.

Proposed amendments to ITU-T Y.3804: “Quantum key distribution networks – Control and management” in TD318/WP3

This WI will develop an amendment to Y.3804 as follows;
- to add a reference point of Mx in clause 8.4 Reference points on a QKDN manager;
- to revise Figure 1 – A functional architecture model of QKDN in clause 6 Functional architecture model to include the Mx reference point and an editorial correction on key relay.

Proposed amendments to ITU-T Y.3805: “Quantum key distribution networks – Software-defined networking control” in TD319/WP3

This WI will develop an amendment to Y.3802 as follows;
- to revise Figure 1 of Y.3805 – Functional architecture for SDN control in QKDN in clause 8 Functional architecture for SDN control in QKDN to include the Mx reference point and an editorial correction on key relay.

Proposed amendments to ITU-T Y.3811: “Quantum key distribution networks – Functional architecture for quality of service assurance” in TD320/WP3

This WI will develop an amendment to Y.3811 as follows;
- to revise Figure 1 – Functional architecture of QoS assurance for QKDN to include the Mx reference point and editorial corrections.

Proposed amendments to ITU-T Y.3814: “Quantum key distribution networks – Functional requirements and architecture for machine learning enablement” in TD321/WP3

This WI will develop an amendment to Y.3814 as follows;
- to revise Figure 8-1 – Functional architecture model of QKDNml to include the Mx reference point and an editorial correction.


4. Conclusion

SG13 will study the network aspects of QKD. Q16/13 and Q6/13 look forward to close cooperation with ITU-T SG2, SG11, SG15, SG17, ETSI ISG-QKD, ISO/IEC JTC1/SC27, WG14, AG4, IETF/IRTF, and relevant groups for future standardization on QKD networks. 

Attachments:
1) The consented draft Recommendation ITU-T Y.3818 (ex Y.QKDN-iwac) “Quantum key distribution networks interworking - architecture” (TD300/WP3);
2) The consented draft Recommendation ITU-T Y.3815 (ex Y.QKDN-rsfr) “Quantum key distribution networks – overview of resilience” (TD301/WP3);
3) The updated draft Recommendation ITU-T Y.QKDNi_SDNC “Quantum Key Distribution Network Interworking – Software Defined Networking Control” (TD304/WP3);
4) The updated draft Recommendation ITU-T Y.QKDNf_fr “Framework of Quantum Key Distribution Network Federation” (TD305/WP3);
5) The updated draft Technical Report ITU-T TR-QN-UC “Use cases of quantum networks beyond QKDN” (TD307/WP3);
6) The updated draft Supplement ITU-T Y.supp.QKDN-UC “Use cases of quantum key distribution networks” (TD308/WP3);
7) The updated draft Recommendation ITU-T Y.QKDN-AMC “Quantum key distribution networks - Requirements and architectural model for autonomic management and control" (TD306/WP3);
8) The updated draft Recommendation ITU-T Y.QKDN-TSNfr “Framework for integration of quantum key distribution network and time sensitive network " (TD310/WP3);
9) The updated draft Recommendation ITU-T Y.QKDN-rsrq “Requirements for quantum key distribution network resilience” (TD309/WP3);
10) The updated draft Technical Report on "Overview for integration of quantum key distribution network with non-quantum cryptographies” in (TD311/WP3);
11) The consented draft Recommendation ITU-T Y.3817 (ex Y.QKDN-qos-iw-req) “Quantum key distribution networks interworking - Requirements of quality of service assurance" TD463/WP1);
12) The consented draft Recommendation ITU-T Y.3816 (ex Y.QKDN-qos-ml-fa) “Quantum key distribution networks: Functional architecture enhancement of machine learning based quality of service assurance" (TD461/WP1).
Attachments:

    SG13-LS96_att12
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-1.pdf

    SG13-LS96_att11
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-2.pdf

    SG13-LS96_att10
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-3.pdf

    SG13-LS96_att9
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-4.pdf

    SG13-LS96_att8
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-5.pdf

    SG13-LS96_att7
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-6.pdf

    SG13-LS96_att6
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-7.pdf

    SG13-LS96_att5
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-8.pdf

    SG13-LS96_att4
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-9.pdf

    SG13-LS96_att3
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-10.pdf

    SG13-LS96_att2
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-11.pdf

    SG13-LS96_att1
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-12.pdf

    SG13-LS96
    https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2023-08-28-itu-t-sg-13-opsawg-ls-on-work-progress-on-quantum-key-distribution-qkd-network-in-sg13-as-of-july-2023-attachment-13.docx