Y.3800

{{Short description|Computer networking standard}}

{{technical|date=July 2021}}

{{Infobox technology standard

| title = Y.3800

| long_name = Overview on networks supporting quantum key distribution

| image =

| caption =

| status = In force

| year_started =

| version = 1.1

| version_date = July 2020

| preview =

| preview_date =

| organization = ITU-T

| committee =

| base_standards =

| related_standards =

| abbreviation =

| domain = telecommunication

| license = Freely available

| website = https://www.itu.int/rec/T-REC-Y.3800/

}}

Y.3800 is an ITU-T Recommendation (computer standard) with the long name "Overview on networks supporting quantum key distribution", that gives an overview of networks supporting quantum key distribution (QKD) cryptographic protocols.{{Cite web|last=ITU|date=2019-12-03|title=New ITU standard for networks to support quantum-safe encryption and authentication|url=https://news.itu.int/new-itu-standard-networks-support-quantum-safe-encryption-authentication/|url-status=live|archive-url=https://web.archive.org/web/20210621155256/https://news.itu.int/new-itu-standard-networks-support-quantum-safe-encryption-authentication/|archive-date=2021-06-21|access-date=2021-06-21|website=ITU News|language=english}}

The standard provides support for the design, deployment, operation and maintenance for the implementation of QKD networks (QKDNs), in terms of standardized technologies.{{Cite web|title=Y.3800: Overview on networks supporting quantum key distribution|url=https://www.itu.int/rec/T-REC-Y.3800/|url-status=live|archive-url=https://web.archive.org/web/20210621154915/https://www.itu.int/rec/T-REC-Y.3800/|archive-date=2021-06-21|access-date=2021-06-21|website=www.itu.int}} It extends existing point-to-point system, and allows for QKD networks.

The relevant network aspects of conceptual structure, layered model and basic functions are within the scope of the Recommendation to support its implementation.{{Cite web|last=Weissberger|first=Alan|date=2020-04-26|title=New ITU-T SG13 Recommendations related to IMT 2020 and Quantum Key Distribution|url=https://techblog.comsoc.org/2020/04/26/new-itu-t-sg13-recommendations-related-to-imt-2020-and-quantum-key-distribution/|url-status=live|archive-url=https://web.archive.org/web/20210621161922/https://techblog.comsoc.org/2020/04/26/new-itu-t-sg13-recommendations-related-to-imt-2020-and-quantum-key-distribution/|archive-date=2021-06-21|access-date=2021-06-21|website=Technology Blog|language=en-US}}{{Cite web|last=Qin|first=Hao|date=2020-08-12|title=Standardization of quantum cryptography in ITU-T and ISO/IEC|url=https://2020.qcrypt.net/slides/Qcrypt2020_ITU_ISO.pdf|url-status=live|archive-url=https://web.archive.org/web/20210622101323/https://2020.qcrypt.net/slides/Qcrypt2020_ITU_ISO.pdf|archive-date=2021-06-22|access-date=2021-06-22|website=Qcrypt}}

As of September 2020, Y.3800 as well as the related Y.3801 is the basis of QKD trials being conducted by Verizon between their 5G lab in Virginia and Washington D.C.{{Cite web|last=Weissberger|first=Alan|date=2020-09-04|title=Verizon Trials Quantum Key Distribution for Encryption over Fiber Optic Links|url=https://techblog.comsoc.org/2020/09/04/verizon-trials-quantum-key-distribution-for-encryption-over-fiber-optic-links/|url-status=live|archive-url=https://web.archive.org/web/20210628133841/https://techblog.comsoc.org/2020/09/04/verizon-trials-quantum-key-distribution-for-encryption-over-fiber-optic-links/|archive-date=2021-06-28|access-date=2021-06-28|website=Technology Blog|language=en-US}}