Geofencing of data in a cloud-based environment

• US 9,860,256 B2
• Filed: 11/02/2015
• Issued: 01/02/2018
• Est. Priority Date: 11/02/2015
• Status: Active Grant

• Current Assignee: Box Incorporated
• Original Assignee: Box Incorporated
• Inventors: Minkovich, Kirill, Adduri, Pranava
• Primary Examiner(s): Paliwal, Yogesh
• Application Number:
  US14/929,920
• Publication Number:
  US 20170126698A1
• Time in Patent Office: 792 Days
• Field of Search: 713164
• CPC Class Codes: G06F 21/00 Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06F 2221/2111 Location-sensitive, e.g. geographical location, GPS
• CPC Class Codes: H04L 63/107 wherein the security policies are location-dependent, e.g. entities privileges depend on current location or allowing specific operations only from locally connected terminals
• CPC Class Codes: H04L 9/0872 using geo-location information, e.g. location data, time, relative position or proximity to other entities
• CPC Class Codes: H04L 9/3236 using cryptographic hash functions
• CPC Class Codes: H04L 9/3297 involving time stamps, e.g. generation of time stamps
• CPC Class Codes: H04W 12/086 using security domains
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences

Abstract

Disclosed is an approach to incorporate geographical access control features for a cloud-based storage platform. This allows, for example, enterprise administrators to define geographical areas (geofences) with arbitrary precision within which content access can be applied to items of data.

Claims

1. A method for managing access to data, the method comprising:

configuring a geographic region for a data item, wherein the geographic region identifies a geographic location for which access is grantable to the data item, and the data item is encrypted in association with location information that corresponds to the geographic region;

receiving a request to access the data item;

determining whether to grant access to the data item by considering a role of a requestor, wherein the geographic location for which access is grantable to the data item is expanded for a higher level role or is contracted for a lower level role;

identifying a location associated with the request to access the data item;

using information pertaining to the location to attempt to decrypt the data item, where the data item is decryptable only if the location corresponds to the geographic location for which access is permitted to the data item; and

providing the data item in response to the request if the data item can be decrypted using the information pertaining to the location of the request.

2. The method of claim 1, wherein the location associated with the request is identified using a GPS mechanism at a mobile device that sends the request.

3. The method of claim 2, wherein the information pertaining to the location comprises a one-way hashed value of location data for the mobile device.

4. The method of claim 1, wherein the geographic region is configured using a grid square that defines an area represented a coordinate having a fixed precision, where boundaries of the area are defined by incrementing or decrementing a digit of the coordinate.

5. The method of claim 1, wherein the data item is encrypted with a key (DEK), and the DEK is encrypted using the location information to generate an encrypted key (EDEK).

6. The method of claim 5, wherein the location information comprises a hash of a value corresponding to the geographic region.

7. The method of claim 5, wherein the DEK can be decrypted only if the location information corresponds to location associated with the request to access the data item, where the data item is not decryptable unless the DEK can be decrypted.

8. The method of claim 5, where the EDEK is encrypted to generate a double-encrypted key (KEDEK) that is stored in a cloud-based storage system with the data item.

9. The method of claim 8, where a set of KEDEKs is stored that corresponds to a set of location units corresponding to the geographic region.

10. The method of claim 8, where upon receipt of the request, a set of KEDEKs are processed to determine if any KEDEK corresponds to the location associated with the request, and where access is granted to the data item if the location associated with the request does correspond to at least one KEDEK.

11. A computer program product, embodied in a non-transitory computer readable medium, the non-transitory computer readable medium having stored thereon a sequence of instructions which, when executed by a processor causes the processor to execute a process, the process comprising:

configuring a geographic region for a data item, wherein the geographic region identifies a geographic location for which access is grantable to the data item, and the data item is encrypted in association with location information that corresponds to the geographic region;

receiving a request to access the data item;

determining whether to grant access to the data item by considering a role of a requestor, wherein the geographic location for which access is grantable to the data item is expanded for a higher level role or is contracted for a lower level role;

identifying a location associated with the request to access the data item;

using information pertaining to the location to attempt to decrypt the data item, where the data item is decryptable only if the location corresponds to the geographic location for which access is permitted to the data item; and

providing the data item in response to the request if the data item can be decrypted using the information pertaining to the location of the request.

12. The computer program product of claim 11, wherein the location associated with the request is identified using a GPS mechanism at a mobile device that sends the request.

13. The computer program product of claim 12, wherein the information pertaining to the location comprises a one-way hashed value of location data for the mobile device.

14. The computer program product of claim 11, wherein the geographic region is configured using a grid square that defines an area represented a coordinate having a fixed precision, where boundaries of the area are defined by incrementing or decrementing a digit of the coordinate.

15. The computer program product of claim 11, wherein the data item is encrypted with a key (DEK), and the DEK is encrypted using the location information to generate an encrypted key (EDEK).

16. The computer program product of claim 15, wherein the location information comprises a hash of a value corresponding to the geographic region.

17. The computer program product of claim 15, wherein the DEK can be decrypted only if the location information corresponds to location associated with the request to access the data item, where the data item is not decryptable unless the DEK can be decrypted.

18. The computer program product of claim 15, where the EDEK is encrypted to generate a double-encrypted key (KEDEK) that is stored in a cloud-based storage system with the data item.

19. The computer program product of claim 18, where a set of KEDEKs is stored that corresponds to a set of location units corresponding to the geographic region.

20. The computer program product of claim 18, where upon receipt of the request, a set of KEDEKs are processed to determine if any KEDEK corresponds to the location associated with the request, and where access is granted to the data item if the location associated with the request does correspond to at least one KEDEK.

21. A system for managing access to data, the system comprising:

a processor;

a memory comprising a computer program product, embodied in a non-transitory computer readable medium, the non-transitory computer readable medium having stored thereon a sequence of instructions which, when executed by the processor causes the processor to execute a process, the process comprising;

configuring a geographic region for a data item, wherein the geographic region identifies a geographic location for which access is grantable to the data item, and the data item is encrypted in association with location information that corresponds to the geographic region;

receiving a request to access the data item;

determining whether to grant access to the data item by considering a role of a requestor, wherein the geographic location for which access is grantable to the data item is expanded for a higher level role or is contracted for a lower level role;

identifying a location associated with the request to access the data item;

using information pertaining to the location to attempt to decrypt the data item, where the data item is decryptable only if the location corresponds to the geographic location for which access is permitted to the data item; and

providing the data item in response to the request if the data item can be decrypted using the information pertaining to the location of the request.

22. The system of claim 21, wherein the location associated with the request is identified using a GPS mechanism at a mobile device that sends the request.

23. The system of claim 22, wherein the information pertaining to the location comprises a one-way hashed value of location data for the mobile device.

24. The system of claim 21, wherein the geographic region is configured using a grid square that defines an area represented a coordinate having a fixed precision, where boundaries of the area are defined by incrementing or decrementing a digit of the coordinate.

25. The system of claim 21, wherein the data item is encrypted with a key (DEK), and the DEK is encrypted using the location information to generate an encrypted key (EDEK).

26. The system of claim 25, wherein the location information comprises a hash of a value corresponding to the geographic region.

27. The system of claim 25, wherein the DEK can be decrypted only if the location information corresponds to location associated with the request to access the data item, where the data item is not decryptable unless the DEK can be decrypted.

28. The system of claim 25, where the EDEK is encrypted to generate a double-encrypted key (KEDEK) that is stored in a cloud-based storage system with the data item.

29. The system of claim 28, where a set of KEDEKs is stored that corresponds to a set of location units corresponding to the geographic region.

30. The system of claim 28, where upon receipt of the request, a set of KEDEKs are processed to determine if any KEDEK corresponds to the location associated with the request, and where access is granted to the data item if the location associated with the request does correspond to at least one KEDEK.