Hi Scott, et al, I wonder if this statement is more applicable for the SEC ADs to look at? I have forwarded them this statement.
Cheers. > On Dec 17, 2025, at 7:47 AM, Liaison Statement Management Tool > <[email protected]> wrote: > > Title: Title: LS on work progress on quantum key distribution network (QKDN) > in SG11 > Submission Date: 2025-12-17 > URL of the IETF Web page: https://datatracker.ietf.org/liaison/2086/ > > To: Operations and Management Area Working Group (opsawg) > From: ITU-T SG 11 > Purpose: For information > > > Email Addresses > --------------- > From: [email protected] > To: Joe Clarke <[email protected]>,Benoît Claise <[email protected]> > Cc: Mahesh Jethanandani <[email protected]>,Benoît Claise > <[email protected]>,Joe Clarke <[email protected]>,Scott Mansfield > <[email protected]>,Mohamed Boucadair > <[email protected]>,Operations and Management Area Working Group > Discussion List <[email protected]> > Response Contacts: [email protected] > [email protected] > [email protected] > Technical Contacts: [email protected] > > > Body: Note: See attachment for document with functioning links. > > ITU-T SG11 is pleased to inform you of SG11 progress on quantum key > distribution network (QKDN) topics. > 1. The published Recommendations > ITU-T SG11 has published five Recommendations on QKDN as follows: > 1) Recommendation ITU-T Q.4160: Quantum key distribution networks – > Protocol framework > 2) Recommendation ITU-T Q.4161: Protocols for Ak interfaces for quantum > key distribution networks > 3) Recommendation ITU-T Q.4162: Protocols for Kq-1 interfaces for quantum > key distribution networks > 4) Recommendation ITU-T Q.4163: Protocols for Kx interfaces for quantum > key distribution networks > 5) Recommendation ITU-T Q.4164: Protocols for Ck interfaces for quantum > key distribution networks > 2. The items consented at ITU-T Study Group 11 meeting (Geneva, 17-26 > November 2025) > ITU-T SG11 consented one Recommendation on QKDN as follows: > 1) Recommendation ITU-T Q.4165 (ex Q.QKDNi_profr) Quantum key distribution > networks interworking - Protocol framework. > Summary: > Recommendation ITU-T Q.4165 (ex Q.QKDN_profr) specifies a protocol framework > for signalling and protocols for quantum key distribution network > interworking (QKDNi). > 3. On-going work items progressed at ITU-T Study Group 11 meeting (Geneva, > 17-26 November 2025) > ITU-T SG11 made progress on five draft Recommendations on QKDN as follows: > 1) Draft Recommendation ITU-T Q.QKDNi_KM “Protocols for interfaces between > key managers for quantum key distribution network interworking” > Summary > Recommendation ITU-T Q.QKDNi_KM specifies protocols for Kxi and Kxi’ > interfaces in quantum key distribution network interworking (QKDNi). > 2) Draft Recommendation ITU-T Q.QKDN_Mk “ Protocols for interfaces on > quantum key distribution network manager for quantum key distribution > networks” > Summary > Recommendation ITU-T Q.QKDN_Mk specifies protocols for interfaces on a > quantum key distribution network manager (QKDN manager) in quantum key > distribution networks (QKDN). Reference points on a QKDN manager are defined > in [ITU-T Y.3802] which are Mq, Mqrp, Mops, Mk, Mc, Mu and Mx. A QKDN manager > performs FCAPS functions through these interfaces to QKD modules, KMs, QKDN > controllers, QKD links, user network managers and corresponding QKDN > managers. Also, Mxi reference point for interworking of QKDN management > layers is defined in [Y3810] for sharing QKDN management information between > QKDN providers through the QKDN management layer. > 3) Draft Recommendation ITU-T Q.QKDN_Cq “Protocols for Cq interfaces for > quantum key distribution networks” > Summary > Recommendation ITU-T Q.QKDN_Cq specifies key generation control protocols for > Cq interfaces for quantum key distribution networks. > 4) Draft Recommendation ITU-T Q.QKDN_GC “General control protocols for > interfaces on quantum key distribution network controller for quantum key > distribution networks” > Summary > Recommendation ITU-T Q.QKDN_GC specifies general control protocols at > interfaces on a quantum key distribution network controller (QKDN controller) > in quantum key distribution networks (QKDNs). Reference points on a QKDN > controller are defined in [ITU-T Y.3802] which are Cq, Cqrp, Cops, Ck and Cx > and in [ITU-T Y.3810] which is Cxi. A QKDN controller performs control > functions through these interfaces to QKD modules, KMs, QKD links and other > QKDN controller. > Signalling procedures, messages and parameters at Ck interfaces for key relay > and Cq interfaces for key generation are specified in [ITU-T Q.4164] and > [draft Q.QKDN_Cq]. This draft Recommendation describes protocols for general > control functions which can be applied commonly to interfaces on the QKDN > controller. These specifications are additional to [ITU-T Q.4164] and [draft > Q.QKDN_Cq] and will not override them. > 4. New work items initiated at ITU-T Study Group 11 meeting (Geneva, 17-26 > November 2025) > ITU-T SG11 initiated one Recommendation on QKDN as follows: > 1) Recommendation ITU-T Q.QKDN_Pro-car "Protocols for cryptographic > application registration in quantum key distribution networks". > Summary > Draft ITU-T Recommendation Y.QKDN_car-fr "Quantum key distribution networks – > Framework of cryptographic application registration" specifies functional > architecture model, functional elements, reference points and operational > procedures for cryptographic application registration procedures. > Recommendation ITU-T Q.QKDN_Pro-car specifies protocols on relevant > interfaces including Ar, Ck, Mu and Mc to support cryptographic application > registration procedures to be aligned with Y.QKDN_car-fr. > 5. Conclusion > ITU-T SG11 looks forward to close cooperation with you and relevant groups > for future standardization on QKDNs. > Attachments: > 1) SG11-TD712/GEN: Consent - draft new Recommendation ITU-T Q.4165 (ex > Q.QKDNi_profr) "Quantum key distribution network interworking - Protocol > framework" (Geneva, 17-26 November 2025). > 2) SG11-TD701/GEN: Output - draft new Recommendation Q.QKDNi_KM "Protocols > for interfaces between key managers for quantum key distribution network > interworking" (Geneva, 17-26 November 2025). > 3) SG11-TD704/GEN: Output - draft new Recommendation Q.QKDN_Mk "Protocols > for interfaces on quantum key distribution network manager for quantum key > distribution networks" (Geneva, 17-26 November 2025). > 4) SG11-TD702/GEN: Output - draft new Recommendation Q.QKDN_Cq "Protocols > for Cq interfaces for quantum key distribution networks" (Geneva, 17-26 > November 2025). > 5) SG11-TD703/GEN: Output - draft new Recommendation Q.QKDN_GC "General > control protocols for interfaces on quantum key distribution network > controller for quantum key distribution networks" (Geneva, 17-26 November > 2025). > 6) SG11-TD710/GEN: Output - draft baseline of new work item Q.QKDN_Pro-car > "Protocols for cryptographic application registration in quantum key > distribution networks" (Geneva, 17-26 November 2025). > Attachments: > > LS on work progress on quantum key distribution network (QKDN) in SG11 > > https://www.ietf.org/lib/dt/documents/LIAISON/liaison-2025-12-17-itu-t-sg-11-opsawg-title-ls-on-work-progress-on-quantum-key-distribution-network-qkdn-in-sg11-attachment-1.pdf > > Mahesh Jethanandani [email protected]
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