IOCTL_DVD_SEND_KEY control code
Sends the specified key to a DVD device to complete the related step in an authentication sequence.
This IOCTL has only read access to the device and cannot send keys that make alterations to the hardware configuration. Therefore, this request is limited to sending key types DvdChallengeKey, DvdBusKey2, and DvdInvalidateAGID.
The IOCTL_DVD_SEND_KEY2 request has write access to the device and is not limited to these three key types.
For more information, see DVD_KEY_TYPE.
The buffer at Irp->AssociatedIrp.SystemBuffer contains a DVD_COPY_PROTECT_KEY structure that indicates the session ID, key type, and key to be sent to the device.
The Information field is set to zero. The Status field is set to STATUS_SUCCESS, or possibly to STATUS_INSUFFICIENT_RESOURCES.
Build date: 4/17/2013