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STATUS_GRAPHICS_OPM_INVALID_ENCRYPTED_PARAMETERS
STATUS_GRAPHICS_OPM_INVALID_ENCRYPTED_PARAMETERS concerns the protected control channel between the OPM client and the video output. It does not say that the video frame itself failed HDCP. OPM requests carry session material, an operation-specific parameter block, and integrity protection; a stale, incorrectly sized, or reserialized block can fail before a protection command reaches the output.
For OPM information requests, Windows documents a fresh random number, an OMAC over the request fields, and a sequence number. After a failed request, the documented rule is to reuse the same sequence number rather than increment it.
Useful evidence
- Log the OPM operation, sequence number, parameter length, output identity, and whether the call belongs to a newly initialized session.
- Do not replay a protected parameter block across an OPM object recreation, another output, or another process.
- Distinguish this from a capability result such as unsupported HDCP: here the protected request itself cannot be authenticated or decoded.
References
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