SYSTEM AND METHOD FOR REMOTELY TRACKING AN ACTIVATION OF PROTECTED SOFTWARE

• US 20100017886A1
• Filed: 12/11/2007
• Published: 01/21/2010
• Est. Priority Date: 12/22/2006
• Status: Abandoned Application

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Desmicht, Eric, Kleingeld, Menno, Mutz, Stephane
• Application Number:
  US12/520,242
• Publication Number:
  US 20100017886A1
• Time in Patent Office: Days
• US Class Current: 726/26
• 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]

Abstract

The invention is related to a system (2) for remotely tracking the activation of a protected software in a device (4), the system (2) comprises a plurality of devices (4) and an authorisation apparatus (6). Each device (4) comprises an electronic chip (8) having an identification number uniquely identifying the electronic chip (8). The authorisation apparatus (6) comprises an encryption processor (18) adapted to calculate an encrypted identity. Each device (4) is adapted to transmit its identification number to the authorisation apparatus (6), the authorisation apparatus (6) is adapted to record the received identification number and to transmit an encrypted identity. The device (4) contains a decryption processor (12) adapted to decrypt the transmitted encrypted identity to produce a decrypted identity and the electronic chip (8) activates the protected software only if the identification number of the device (4) corresponds to the decrypted identity.

Claims

1. System for remotely tracking the activation of a protected software in a device, the protected software remaining unusable by the device as long as the protected software has not been activated;

the system comprising a plurality of devices and an authorisation apparatus that are adapted to communicate with each other;

each device comprising a storage unit containing the protected software, a device memory and an electronic chip having an identification number uniquely identifying the electronic chip and the device from the other devices, and

the authorisation apparatus comprising an encryption processor adapted to calculate an encrypted identity using the identification number;

wherein each device is adapted to transmit its identification number to the authorisation apparatus;

the authorisation apparatus is adapted to record the received identification number and to transmit an encrypted identity calculated from the identification number to the device; and

the device contains a decryption processor adapted to decrypt the transmitted encrypted identity calculated from the identification number to produce a decrypted identity and the electronic chip is adapted to activate the protected software only if the identification number of the device corresponds to the decrypted identity.

2. System according to claim 1, wherein the device is further adapted to transmit a geographical identity related to the geographical location of the device to the authorisation apparatus.

3. System according to claim 1, wherein the electronic chip is adapted to read its identification number from a register of the electronic chip, to compare the identification number to the decrypted identity and to execute control instructions located at an activation memory address of the storage unit as a result of a positive comparison of the identification number and the decrypted identity;

the execution of the control instructions initiating the execution of the program instructions of the protected software and activating the protected software in the device.

4. System according to claim 3, wherein the electronic chip is adapted to execute the instructions of an authorisation program located at an authorisation memory address of the device memory as a result of a negative comparison of the identification number and the decrypted identity;

the execution of the instructions of the authorisation program initiating the electronic chip to retransmit its identification number to the authorisation apparatus.

5. System according to claim 3, wherein the protected software comprises scrambled program instructions, the authorisation apparatus is further adapted to transmit a descrambling key to the device with the encrypted identity, and the electronic chip is adapted to descramble the scrambled program instructions of the protected software using the descrambling key following the execution of the control instructions activating the protected software in the device.

6. Method for remotely tracking the activation of a protected software in a device belonging to a plurality of devices;

the at least one device comprising an electronic chip containing an identification number uniquely identifying the electronic chip and the device from the other devices, a storage unit containing a protected software that is unusable by the device as long as the protected software has not been activated, a decryption processor for calculating a decrypted identity and a device communication interface for communicating with an authorisation apparatus;

the authorisation apparatus comprising an encryption processor for calculating an encrypted identity, a central processor to record device related data and an apparatus communication interface for communicating with a device;

wherein the method comprises for each device the steps of;

transmitting the identification number of the electronic chip from the device to the authorisation apparatus;

recording the identification number of the electronic chip and calculating an encrypted identity from the transmitted identification number using the encryption processors;

transmitting the calculated encrypted identity from the authorisation apparatus to the device;

calculating a decrypted identity from the transmitted encrypted identity using the decryption processor;

comparing the decrypted identity to the identification number of the electronic chip; and

activating the protected software for employment by the device as a result of a positive comparison of the decrypted identity with the unique identification number.

7. Method according to claim 6, wherein the method additionally comprises the step of:

retransmitting the identification number of the electronic chip from the device to the authorisation apparatus and repeating the above steps of the method as a result of a negative comparison of the decrypted identity with the unique identification number.

8. Method according to claim 6, wherein activating the protected software for employment by the device comprises directing the electronic chip to an activation memory address of the storage unit as a result of a positive comparison and executing control instructions located at the activation memory address of the storage unit;

the execution of the control instructions initiating the execution of the program instructions of the protected software and activating the protected software in the device.

9. Method according to to claim 6, wherein the protected software comprises scrambled program instructions, the authorisation apparatus further transmits a descrambling key to the device with the encrypted identity, and the electronic chip descrambles the scrambled program instructions of the protected software using the descrambling key as a result of a positive comparison.

10. Method according to claim 6, wherein the device additionally transmits to the authorisation apparatus a geographical identity relating to the geographical location of the device.

11. Method according to claim 6, wherein the protected software is activated for employment by the at least one device as a result of a negative comparison and device operation is periodically interrupted at predetermined and periodic times.

12. Device comprising an electronic chip containing an identification number uniquely identifying the electronic chip and the device from other devices, a storage unit containing a protected software that is unusable by the device as long as the protected software has not been activated, a decryption processor for calculating a decrypted identity and a device communication interface for communicating with an authorisation apparatus;

wherein the electronic chip puts into practice a method for remotely tracking the activation of a protected software in a device according to claim 6.

13. Authorisation apparatus comprising an encryption processor for calculating an encrypted identity, a central processor adapted to record device related data and an apparatus communication interface for communicating with a device;

wherein the central processor puts into practice a method for remotely tracking the activation of a protected software in a device according to claim 6.