TIA/EIA-1073 is a multi-part standard that when taken in total, defines the requirements for a Satellite Network Modem System using Time Division Multiplexing (TDM) and Multi-Frequency Time Division Multiple Access (MF-TDMA) signaling. The Satellite Network Modem System (SNMS) standard defines the technical requirements for meeting the functional capabilities described in TIA/EIA-157 [1]. The SNMS standard defines the requirements for Hub-Spoke as well as Mesh satellite network topologies operating over transponded/transparent satellite systems. The collection of parts making up TIA/EIA-1073 is depicted below in Figure 1.

The present document, SNMS Encryption Requirements (TIA/EIA-1073-002), provides the general requirements necessary to achieve security for hub-spoke and mesh network topologies. The general requirements that shall be met by the SNMS reference publications were developed by ETSI (European Telecommunications Standards Institute). These referenced publications are freely available at http://www.etsi.org. The SNMS shall fully meet the DVB-S2 and DVB-RCS requirements in ETSI EN 301 790 and ETSI EN 302 307 [2, 3] unless otherwise specified by this document. In addition, the encryption requirements specify modifications to, additions to, and/or deletions to the specifications in [2, 3], and other requirements necessary to provide the capabilities described in TIA/EIA-157. These modifications use the same paragraph number system as in the reference documents.