IP Library Granted Patent US 7,657,741
Granted Patent B2
US 7,657,741 · App. 10/832,155 · Granted Feb 2, 2010

System and method of indicating the strength of encryption

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Quick Facts
Patent No.
US 7,657,741
App. No.
10/832,155
Granted
Feb 2, 2010
Kind
B2
Abstract

A method and system are provided for secure messaging on mobile computing devices. The method and system provide for an indication of a security trust level associated with a security method used with an electronic message.

Claims (39)

1. A method of indicating on an electronic device a security trust level associated with an electronic message that has been encrypted, comprising the steps of:

accessing security-related data associated with the electronic message;

wherein the security-related data indicates which type of security cipher algorithm was used with respect to the electronic message;

accessing security-related trust categories that are stored on the electronic device;

determining, based upon the accessed security-related data, which of the security-related trust categories corresponds to the electronic message;

wherein a trust-level indicator is displayed on the electronic device;

wherein the trust-level indicator comprises a trust-level description regarding encryption applied to the electronic message, the trust-level description being based upon the determined corresponding security-related trust category.

2. The method of claim 1 , wherein the electronic device comprises a wireless mobile communication device.

3. The method of claim 1 , wherein the electronic device comprises a cellular telephone.

4. The method of claim 1 , wherein the electronic device comprises a personal data assistant.

5. The method of claim 1 , wherein at least one of the security-related trust categories is determined by an owner of the device.

6. The method of claim 1 , wherein at least one of the security-related categories is determined by a user of the device.

7. The method of claim 1 , wherein the trust-level indicator includes text.

8. The method of claim 1 , wherein the security-related data includes a checksum.

9. The method of claim 1 , wherein the security-related data includes a digital signature.

10. Computer-readable medium capable of causing a mobile device to perform the method of claim 1 .

11. The method of claim 1 , wherein the encryption applied to the electronic message is Triple Data Encryption Standard or Advanced Encryption Standard.

12. The method of claim 1 , wherein the electronic message comprises an electronic mail message.

13. The method of claim 12 , wherein a messaging client handles the electronic mail message.

14. The method of claim 1 , wherein the trust-level indicator comprises a graphical indicator.

15. The method of claim 14 , further comprising the step of providing a message in response to selection of the trust-level indicator.

16. The method of claim 1 , wherein the security-related data indicates which type of security was used with respect to the electronic message.

17. The method of claim 16 , wherein a security-related policy store contains associations between security-related trust categories and security types, wherein the determining of the corresponding security-related trust categories includes using the ssociations of the security-related policy store to determine which of the security-related trust categories correspond to the electronic message,

wherein the electronic device and another electronic device are configured to use different security-related trust categories for the same security type.

18. The method of claim 16 , wherein the security types include different cipher algorithms.

19. A security-level indication system for electronic devices, wherein security-related data indicates what type of security has been used for an electronic message that has been encrypted, comprising:

a security-related policy store configured to store security-related trust categories;

a comparator module configured to determine which of the security-related trust categories corresponds to the electronic message by using the security-related data;

wherein a trust-level indicator is displayed on the electronic device;

wherein the trust-level indicator comprises a trust-level description regarding encryption applied to the electronic message, the trust-level description being based upon the determined corresponding security-related trust category.

20. The system of claim 19 , wherein the security-related policy store contains associations between the security-related trust categories and security types, wherein determination of the corresponding security-related trust categories includes using the associations of the security-related policy store to determine which of the security-related trust categories correspond to the electronic message.

21. The security-level indication system of claim 19 , further comprising a user interface configured to display a message in response to selection of the trust-level indicator.

22. A system of indicating on an electronic device a security trust level associated with an electronic message that has been encrypted, comprising:

means for accessing security-related data associated with the electronic message;

wherein the security-related data indicates which type of security cipher algorithm was used with respect to the electronic message;

means for accessing security-related trust categories that are stored on the electronic device;

means for determining, based upon the accessed security-related data, which of the security-related trust categories corresponds to the electronic message;

wherein a trust-level indicator is displayed on the electronic device;

wherein the trust-level indicator comprises a trust-level description regarding encryption applied to the electronic message, the trust-level description being based upon the determined corresponding security-related trust category.

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE ADDED PATENT NUMBER TO REMOVE PATENT NO. 8,873,407 AT PREVIOUSLY RECORDED ON REEL 64066 FRAME 1. ASSIGNOR(S) HEREBY CONFIRMS THE NUNC PRO TUNC ASSIGNMENT EFFECTIVE DATE MARCH 20, 2023. Recorded Feb 2, 2026
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 074921/0001 →
NUNC PRO TUNC ASSIGNMENT Recorded Jun 19, 2023
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 064066/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 16, 2023
From: BLACKBERRY LIMITED
To: MALIKIE INNOVATIONS LIMITED
Reel/Frame 064104/0103 →
CHANGE OF NAME Recorded Oct 16, 2014
From: RESEARCH IN MOTION LIMITED
To: BLACKBERRY LIMITED
Reel/Frame 034012/0007 →