Project Title

Space Data Link Security Protocol, Issue 2



Document Number



5.09 Space Data Link Security WG

Document Type


Description of Document

This Recommended Standard specifies a security protocol for CCSDS data links. The protocol provides a security header and trailer along with associated procedures that may be used with the CCSDS Telemetry, Telecommand, and Advanced Orbiting Systems Space Data Link Protocols to provide a structured method for applying data authentication and/or data confidentiality at the Data Link layer. Issue 2 of the document will include changes in order to 1) enable use of USLP frames, 2) reflect AES key length change for baseline mode, 3) reference the recently approved Blue Book for Extended Procedures, 4) clarify and complete a few specifications.

Applicable Patents

There are no patent issues for this technology that are known by the CCSDS community

Patent Comments

No applicable patent known

Survey of Similar Standards
Documents or Projects
Undertaken in Other Bodies
and elsewhere in CCSDS



Book Editor


Book Editor Resources

1 Work Month (WM)

Prototype 1

Not Required

Prototype 1 Resources

Prototype 2

Not Required

Prototype 2 Resources

Prototype 3

Not Required

Prototype 3 Resources



Monitor Only

Resource Comments


Legend for Schedule Milestones
Orange Bullet = Required for Orange Books
Green Bullet = Required for Green Books
Magenta Bullet = Required for Magenta Books
Blue Bullet = Required for Blue Books
Note - Red Books are Draft Blue/Magenta Books

Schedule Milestones
Orange BookGreen BookMagenta BookBlue Book
Original Completion Date
(Date in M/D/YYYY format.)
(Date in M/D/YYYY format.)
Project ApprovedOrange BulletGreen BulletMagenta BulletBlue Bullet6/15/2020CMC-P-2020-07-003 Approval of New Project in the 5.09 Space Data Link Security WG
Project Start DateOrange BulletGreen BulletMagenta BulletBlue Bullet6/20/2020
Internal WG Review
First Draft Circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet6/30/2020
First Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet10/1/2020
Second draft circulated to WGOrange BulletGreen BulletMagenta BulletBlue Bullet10/15/2020
Second Draft Comments DueOrange BulletGreen BulletMagenta BulletBlue Bullet11/30/2020
Final WB Submitted to AD for Further ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet1/10/2021Final draft delivered to SEA+SLS ADs
External Milestones
Secretariat Document ProcessingOrange BulletGreen BulletMagenta BulletBlue Bullet3/1/2021
First Agency ReviewMagenta BulletBlue Bullet4/30/2021
RID ResolutionMagenta BulletBlue Bullet5/30/2021
Secretariat Document Processing 2Magenta BulletBlue Bullet5/30/2021No additional review expected
Final Agency ReviewMagenta BulletBlue Bullet5/30/2021No additional review expected
RID ResolutionMagenta BulletBlue Bullet5/30/2021No additional review expected
First Prototype DevelopmentBlue Bullet5/30/2021Not required
Second Prototype DevelopmentBlue Bullet5/30/2021Not required
CMC ApprovalOrange BulletGreen BulletMagenta BulletBlue Bullet9/30/2021
Total Time to Complete
(in months)
Version: 279.0
Created at 5/4/2020 3:29 PM by Gian Paolo Calzolari
Last modified at 8/16/2022 11:25 AM by Brian Oliver