This Recommended Practice describes recommended operational modes and parameters for implementation of the security features (excluding DRM) described in ATSC A/360, “ATSC 3.0 Security and Service Protection.”
Download current version: A/361:2026-08, “Security and Content Protection”, 12 August 2026.
Previous Versions
There are multiple versions of this document. Please be sure to download the desired version. For amendments, the text includes a list of changes, the rationale for the changes, and compatibility considerations. The following documents are listed by date, with the most recent first.
A/361:2026
Download A/361:2026-04, “Security and Content Protection”, 14 April 2026.
Download A/361:2026-04 Amendment No. 1, “OCSP Clarifications”, 12 August 2026.
A/361:2025
Download A/361:2025-07, “Security and Content Protection”, 17 July 2025.
A/361:2024
Download A/361:2024-04, “Security and Content Protection”, 3 April 2024.
A/361:2023
Download A/361:2023-03, “Security and Content Protection”, 28 March 2023.
A/361:2022
Download A/361:2022-03, “Security and Content Protection”, 31 March 2022.
A/361:2019
Download A/361:2019, “Security and Content Protection”, approved 10 December 2019.
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