Wireless receiver device revocation management

A method of carrying out wireless video communication, comprising:

• at a wireless transmitter (WT) device:
• initiating a wireless communication session with a wireless receiver (WR) device;
• receiving, responsive to the initiation of the wireless communication session with the WR device, a digital certificate to the WR device, where the digital certificate comprises a High-Bandwidth Digital Copy Protection (HDCP) Key Source Vector (KSV), a device identifier for the WR device, a cryptographic key of the WR device, and a digital signature that cryptographically binds the HDCP KSV, the device identifier, and the cryptographic key of the WR device;
• individually checking the HDCP KSV, the device identifier, the cryptographic key of the WR device, and the digital signature of the digital certificate against a revocation list;
• and
• halting the wireless communication session if any of the HDCP KSV, the device identifier, the cryptographic key of the WR device, and the digital signature has been revoked.

A method of carrying out wireless video communication, comprising:

• at a wireless transmitter (WT) device:
• receiving a wireless communication of a digital certificate from a wireless receiver (WR) device, the digital certificate comprising a High-Bandwidth Digital Copy Protection (HDCP) Key Source Vector (KSV), a device identifier for the WR device, a cryptographic key of the WR device, and a digital signature;
• checking the received digital certificate against a revocation list;
• and
• halting the wireless communication session if any of the HDCP KSV, the device identifier, the cryptographic key of the WR device, and the digital signature of the WR device's digital certificate has been revoked.

A non-transitory electronic storage medium storing a digital certificate that binds a copy protection system without revocation to one with revocation to permit revocation when authenticated, the digital certificate comprising:

• a High-Bandwidth Digital Copy Protection (HDCP) Key Source Vector (KSV);
• a device identifier for a wireless (WR) device;
• a cryptographic key of the WR device;
• and
• a digital signature that cryptographically binds the HDCP KSV, the device identifier, and the cryptographic key of the WR device;
• where, the digital certificate can be read from the non-transitory electronic storage medium, and the HDCP KSV and the cryptographic key of the WR device are extracted from the digital certificate and sent to a host device to be verified by comparison to a revocation list to verify validity of the WR device.

A wireless receiver (WR) device, comprising:

• a wireless receiver/transmitter device configured to receive video content and send information for verification of the WR device against a revocation list;
• an electronic storage medium;
• a digital certificate stored on the electronic storage medium comprising:
• a segment of code representing a High-Bandwidth Digital Copy Protection (HDCP) key source vector (KSV);
• a device identifier for the wireless receiver device;
• a cryptographic key of the WR device;
• and
• a digital signature that cryptographically binds the KSV, the cryptographic key of the WR device, and the device identifier;
• and
• where the WR device wirelessly sends the digital certificate via the wireless receiver/transmitter device to a host device to be verified by comparison of the HDCP KSV, the device identifier, the cryptographic key of the WR device, and the digital signature to the revocation list to verify validity of the WR device.