There are three elements of the content protection system. Each element plays a specific role in the system. First, there is the authentication protocol, through which the HDCP Transmitter verifies that a given HDCP Receiver is licensed to receive HDCP Content., Test System Renewability Message for HDCP 2.0 (Note: This is a binary file, right click to save.), Updates the system renewability message (SRM) for High-Bandwidth Digital Content Protection (HDCP). The pbAdditionalParameters parameter of IOPMVideoOutput::Configure must point to a buffer that contains the SRM. The format of an HDCP SRM is documented in the HDCP specification., cifications. Each HDCP Pro repeater contains an internal system renewability message (SRM) engine of its own, which can verify the authorization status of every HDCP device connected below it in the, If an HDCP 1.x receiver device's secret key were compromised, that receiver's privilege to receive HDCP content may be revoked and its identifier (i.e., KSV) may be included on a revocation list, Using HDCP to Protect Content This section describes how to enable HDCP output protection using OPM. Here is a general outline of the steps the application must take. Details are given later in this section. The application might have to provide an SRM to the video output. The mechanism for receiving SRMs is outside the scope of the OPM interface..