System and method for controlling access to protected content

• US 10,409,962 B2
• Filed: 10/28/2011
• Issued: 09/10/2019
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Mangalam-Palli, Jayant, Banginwar, Rajesh, Gokulrangan, Venkat
• Primary Examiner(s): Ullah, Sharif E
• Application Number:
  US14/129,381
• Publication Number:
  US 20140196159A1
• Time in Patent Office: 2,874 Days
• Field of Search: 726 30, 726 2, 726 21, 726 36, 713150, 713163, 713181, 380255, 380264, 380276
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/72 in cryptographic circuits
• CPC Class Codes: G06F 21/85 interconnection devices, e.g. bus-connected or in-line devices
• CPC Class Codes: H04L 2463/102 applying security measure for e-commerce data processing systems or methods, specially adapted for e-commerce G06Q30/00
• CPC Class Codes: H04L 63/1441 Countermeasures against malicious traffic countermeasures against attacks on cryptographic mechanisms H04L9/002
• CPC Class Codes: H04L 65/612 for unicast
• CPC Class Codes: H04N 21/4112 having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities
• CPC Class Codes: H04N 21/4402 involving reformatting operations of video signals for household redistribution, storage or real-time display details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/44231 Monitoring of peripheral device or external card, e.g. to detect processing problems in a handheld device or the failure of an external recording device configuring of peripheral devices in general G06F9/4411; reporting information sensed by appliance or service execution status of appliance services in a home automation network H04L12/2823; monitoring the status of connected device in data switched networks H04L43/0817

Abstract

A receiver includes a first interface to receive content, a second interface to be coupled to a device, and a processor to determine whether the device is a compliant device and to prevent decryption of at least a portion of the content received through the first interface when the device is determined to be a non-compliant device.

Claims

1. An apparatus, comprising:

a first interface to receive content from a content provider;

a second interface to be wirelessly coupled to a device; and

a processor to decrypt a portion, but not all, of the received content prior to any of the received content provided to the device, the processor to determine whether the device is a compliant device after the decryption of the portion of the received content, and after wireless coupling of the device to the apparatus, but prior to any of the received content provided to the device,

the processor further to prevent further decryption of at least a portion of the content received through the first interface when the device is determined to be a non-compliant device,

wherein the content is one or more of audio files, image files, video or chat files, games, documents, texts or applications.

2. The apparatus of claim 1, wherein:

at least the portion of the content is subject to a type of digital copyright protection, and

the processor is to determine the device to be non-compliant with the type of digital copyright protection.

3. The apparatus of claim 1, wherein:

at least the portion of the content is in a high-definition video format, and

the processor is to determine the device is non-compliant with the high-definition video format.

4. The apparatus of claim 1, wherein:

the processor is to prevent decryption of a second portion of the content after a first portion of the content is decrypted at the apparatus and prior to any of the received content provided to the device, and

the first portion of the content is decrypted before the processor is to determine that the device is a non-compliant device.

5. The apparatus of claim 1, further comprising:

a power manager coupled to the processor,

wherein the power manager is to send a signal to the processor indicative of the coupling of the device and wherein the processor is to determine that the device is a non-compliant device after receiving the signal from the power manager.

6. The apparatus of claim 1, further comprising:

a controller to detect the wireless coupling between the second interface and the device,

wherein the processor is to determine that the device is a non-compliant device after the controller is to detect the wireless coupling between the second interface and the non-compliant device.

7. The apparatus of claim 1, wherein the second interface is to be wirelessly coupled to the device over a wireless link.

8. The apparatus of claim 1, wherein the processor is to convert, at the apparatus, at least the portion of the content to a non-compliant format after the device is determined to be a non-compliant device, and wherein at least the portion of the content is to be produced through an output device in the non-compliant format.

9. The apparatus of claim 1, wherein the processor is to convert, at the apparatus, at least the portion of the content to a non-compliant format after the device is determined to be a non-compliant device, and wherein at least the portion of the content is to be sent to the non-compliant device through the second interface in the non-compliant format.

10. A method comprising:

receiving content through a first interface at a receiver;

decrypting, at the receiver, a portion, but not all, of the received content prior to providing any of the received content to a device wirelessly coupled to the receiver;

detecting a wireless coupling of the device to a second interface at the receiver;

after decrypting at the receiver and after detecting the wireless coupling, but prior to providing any of the received content to the device, determining the device to be a non-compliant device; and

preventing further decryption of at least a portion of the content received through the first interface when the device is determined to be a non-compliant device, wherein the first and second interfaces are included within a same receiver,

wherein the content is one or more of audio files, image files, video or chat files, games, documents, texts or applications.

11. The method of claim 10, wherein:

at least the portion of the content is subject to a type of digital copyright protection; and

the device is determined to be non-compliant with the type of digital copyright protection.

12. The method of claim 10, wherein:

at least the portion of the content is in a high-definition video format; and

the device is determined to be non-compliant with the high-definition video format.

13. The method of claim 10, wherein said preventing includes:

preventing decryption of a second portion of the content after a first portion of the content is decrypted at the receiver and prior to any of the received content provided to the device, wherein the first portion of the content is decrypted before the device is determined to be a non-compliant device.

14. The method of claim 10, wherein the second interface is wirelessly coupled to the device over a wireless link.

15. The method of claim 10, further comprising:

converting at least the portion of the content to a non-compliant format after the device is determined to be said non-compliant device; and

producing at least the portion of the content through an output device in the non-compliant format.

16. The method of claim 10, further comprising:

converting at least the portion of the content to a non-compliant format after the device is determined to be said non-compliant device, and

sending at least the portion of the content through the second interface in the non-compliant format.

17. A device comprising:

first logic to receive a first signal of content to be received from a content provider through a first interface;

second logic to receive a second signal indicative of a wireless coupling of an external device to a second interface; and

third logic coupled between the first interface and the second interface, the third logic to decrypt a portion, but not all, of the received content prior to any of the received content provided to the external device, and to determine whether the external device is a non-compliant device after the decryption of the portion and after receipt of at least the second signal, the third logic further to prevent further decryption of at least a portion of the received content when the device is determined to be a non-compliant device and prior to any of the received content provided to the external device,

wherein the content is one or more of audio files, image files, video or chat files, games, documents, texts or applications.

18. The device of claim 17, wherein the first signal includes at least the portion of the content.

19. The device of claim 17, wherein the third logic executes a program to determine whether the external device is said non-compliant device or to prevent decryption of at least the portion of the content, or both.

20. The device of claim 17, wherein:

at least the portion of the content is subject to a type of digital copyright protection, and

the third logic is to determine the device to be non-compliant with the type of digital copyright protection.

21. The device of claim 17, wherein:

at least the portion of the content is in a high-definition video format, and

the third logic is to determine the device is non-compliant with the high definition video format.

22. The device of claim 17, wherein the third logic is to prevent decryption of a second portion of the content after a first portion of the content is decrypted and prior to any of the received content provided to the external device, and

wherein the first portion of the content is decrypted before the third logic is to determine that the external device is a non-compliant device.

23. A non-transitory computer-readable medium storing a

program for controlling a receiver, the program comprising:

first code to determine that a device to be wirelessly coupled to the receiver is a non-compliant device;

second code to decrypt, at the receiver, a portion, but not all, of content received from a content provider through an interface of the receiver prior to any of the received content provided to the device, and to prevent further decryption of at least a portion of the content received through the interface when the device is determined to be a non-compliant device and prior to any of the received content provided to the device,

wherein the content is one or more of audio files, image files, video or chat files, games, documents, texts or applications.

24. The non-transitory computer-readable medium of claim 23, wherein at least the portion of the content is subject to a type of digital copyright protection.

25. The non-transitory computer-readable medium of claim 23, wherein at least the portion of the content is in a high-definition video format.