The scope of this SAE Recommended Practice is to require the use of the same Security Services as defined by the International Standard ISO/CD 15764, modified by the Class of Security as determined by the resource provider and referenced in Table 1, Extended Data Link Security References.

The IDB Gateway-- The IDB Gateway shall be considered an IDB Device operating on the IDB network. This SAE J1760 Data Security Services Recommended Practice defines security, when deemed necessary, between devices on the IDB, as granted by the resource providers. The Security Services required between the IDB Gateway and the vehicle are not within the scope of this document.

IDB Device Functions-- The device functions may be represented by "proxy". Therefore devices such as those that are connected to the IDB may be a communication mechanism, external to the bounded vehicle communication system and shall by "proxy" be protected by the Authentication of Security Services required by this document. The Security Services required between the IDB network and outside the bounded vehicle communication system shall be within the scope of this document. (Reference Figure 1 for a data security services system diagram.)

Classes of Security-- Various capabilities (messages) shall be protected by different classes of security as required by 6.1. Security Services, which involve the transmission and/or reception of only Class 0 resources, are not within the scope of this document.

Theft Deterrent-- The data security services shall provide a mechanism that will discourage the theft of IDB Devices

Compatible IDB Devices All IDB Devices operating on the IDB network that claim to be IDB compatible and utilize resources from an IDB compatible device shall comply with the requirements set forth in this Recommended Practice.

Data Security Service Execution-- This Recommended Practice defines the functional requirements for providing data security service execution with IDB Devices. The methods used in implementing these services are found in the ISO/CD 15764 - Road vehicles - Extended data link security International Standard.