MEDIA SECURITY THROUGH HARDWARE-RESIDENT PROPRIETARY KEY GENERATION

• US 20090202068A1
• Filed: 02/07/2008
• Published: 08/13/2009
• Est. Priority Date: 02/07/2008
• Status: Abandoned Application

• Current Assignee: Adaptive Chips, Inc.
• Original Assignee: Adaptive Chips, Inc.
• Inventors: QURESHI, AMJAD, Chilukuri, Babu
• Application Number:
  US12/027,279
• Publication Number:
  US 20090202068A1
• Time in Patent Office: Days
• US Class Current: 380/44
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 9/0838 Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these network architectures or network communication protocols for key exchange in a packet data network H04L63/061
• CPC Class Codes: H04L 9/0877 using additional device, e.g. trusted platform module [TPM], smartcard, USB or hardware security module [HSM]

Abstract

A method, system and apparatus of an author website in a commerce environment are disclosed. In one embodiment, a system includes a host processor; a first security circuit to re-encrypt a work of authorship protected by an encryption standard using a proprietary key after an authorization module uses an algorithm of the encryption standard to verify that the system has permission to playback the work of authorship; a system memory to store a proprietary encrypted content generated through the re-encryption process of the first security circuit; and a second security circuit of a display module to independently generate the proprietary key using an index pointer provided from the first security circuit to the second security circuit through the host processor and to decrypt the proprietary encrypted content of the system memory using the independently generated proprietary key.

Claims

1. A system comprising:

a host processor;

a first security circuit to re-encrypt a work of authorship protected by an encryption standard using a proprietary key after an authorization module uses an algorithm of the encryption standard to verify that the system has permission to playback the work of authorship;

a system memory to store a proprietary encrypted content generated through the re-encryption process of the first security circuit; and

a second security circuit of a display module to independently generate the proprietary key using an index pointer provided from the first security circuit to the second security circuit through the host processor and to decrypt the proprietary encrypted content of the system memory using the independently generated proprietary key.

2. The system of claim 1 further comprising a key generator circuit of the first security circuit and the second security circuit to generate the proprietary key using a hash table, a number generator, a unique work of authorship identifier, and optionally a unique system identifier wherein the number generator and the hash table of the first security circuit and the second security circuit is exactly the same.

3. The system of claim 2 wherein the index pointer points to a location in embedded memory of the first security circuit and the second security circuit having identical data to enable the key generator circuit of the second circuit to independently generate the proprietary key matching that of the first circuit.

4. The system of claim 3 wherein the encryption standard is at least one of an Advanced Access Content System (AACS) standard, a BD+ (Blu-ray Disc) standard, a High-bandwidth Digital Content Protection (HDCP) standard, a Digital Transmission Content Protection over Internet Protocol (DTCP-IP) standard, and a proprietary standard.

5. The system of claim 1 further comprising a power saving circuit of at least one of the first security circuit and the second circuit to adjust voltage and frequency of at least one clock, memory, gate, and sub-circuit when not in operation to reduce power consumption of the system.

6. The system of claim 1 wherein the proprietary key is at least a 128 bit key, and wherein the work of authorship includes at least one of a video content, a motion-picture content, an audio content, a music content, a lyrical content, a graphical content, and a textual content.

7. The system of claim 1 wherein the display module to decompress the work of authorship after the decryption of the proprietary encrypted content, and to encrypt the decompressed content with a system master key provided from at least one of the display module and the host processor prior to sending the content to at least one of a video buffer and a display.

8. A method of an authorization module comprising:

applying an algorithm of an encryption standard to verify that a playback device has permission to playback the work of authorship;

re-encrypting the work of authorship protected by the encryption standard using a first hardware circuit that generates a proprietary key stored only in embedded hardware memory of the first hardware circuit to re-encrypt the work of authorship; and

storing a proprietary encrypted content generated through the re-encryption process in a system memory without storing any key information to decrypt the proprietary encrypted content in the system memory.

9. The method of claim 8 further comprising:

communicating an index pointer to a display module through a host processor; and

independently generating the proprietary key using an index pointer provided from the first hardware circuit associated with the authorization module to a second hardware circuit associated with the display module;

using the second hardware circuit to decrypt the proprietary encrypted content of the system memory using the independently generated proprietary key.

10. The method of claim 9 further comprising:

generating the proprietary key using the hash table, the number generator, a unique work of authorship identifier, and optionally a unique system identifier, wherein the hash table and the number generator of the first hardware circuit and the second hardware circuit are exactly the same.

11. The method of claim 10 wherein the index pointer references a location in embedded memory of the first hardware circuit and the second hardware circuit having identical data to enable the key generator circuit of the second hardware circuit to independently generate the proprietary key matching that of the first hardware circuit.

12. The method of claim 11 wherein the encryption standard is at least one of an Advanced Access Content System (AACS) standard, a BD+ (Blu-ray Disc) standard, a High-bandwidth Digital Content Protection (HDCP) standard, a Digital Transmission Content Protection over Internet Protocol (DTCP-IP) standard, and a proprietary standard.

13. The method of claim 12 wherein at least one of the first hardware circuit and the second hardware circuit adjusts a voltage and frequency of at least one clock, memory, gate, and sub-circuit when not in operation to reduce power consumption.

14. The system of claim 13 wherein the proprietary key is at least a 128 bit key, and wherein the work of authorship includes at least one of a video content, a motion-picture content, an audio content, a music content, a lyrical content, a graphical content, and a textual content.

15. The system of claim 14 wherein the display module to decompress the work of authorship after the decryption of the proprietary encrypted content, and to encrypt the decompressed content with a system master key provided from at least one of the display module and the host processor prior to sending the content to at least one of a video buffer and a display.

16. A playback device comprising:

an authentication component to verify that a protected content is authorized to be viewed on the playback device;

a media security circuitry to re-encrypt the protected content using a proprietary key after it is authorized to be viewed on the playback device using a secure embedded memory of the media security circuitry; and

a display component to receive the re-encrypted content from a system memory and to reference the media security circuitry to provide the proprietary key to decrypt the re-encrypted content.

17. The playback device of claim 16 wherein the encryption standard is at least one of an Advanced Access Content System (AACS) standard, a BD+ (Blu-ray Disc) standard, a High-bandwidth Digital Content Protection (HDCP) standard, a Digital Transmission Content Protection over Internet Protocol (DTCP-IP) standard, and a proprietary standard.

18. The playback device of claim 17 wherein the display module to decompress the work of authorship after the decryption of the proprietary encrypted content, and to encrypt the decompressed content with a system master key provided from at least one of the display module and the host processor prior to sending the content to at least one of a video buffer and a display.

19. The playback device of claim 16 wherein a memory map of the secure embedded memory and all hardware registers are never visible to software.

20. The playback device of claim 16 further comprising a key generator circuit of the secure embedded memory to generate the proprietary key using a hash table, a number generator, a unique work of authorship identifier, and optionally a unique system identifier.