How should the HDCP keys be formatted for the HDCP 2.2 IP?
The HDMI reference application has two (empty) HDCP 2.2 key arrays.
Note: The actual Private Key size is 320 bytes.
The additional 20 bytes is for a hash code that can be used by the software application to verify the keys before loading them.
These additional bytes are not used by the HDCP driver.
For more details on how to load HDCP keys to the HDMI Subsystem, please refer to the HDCP RX Driver Integration in the HDMI RX Subsystem Product Guide (PG236) v2.0 and later.