Electronic device and method of backing up secure element

Patent metadata

Field	Value
Publication number	US-12026064-B2
Application number	US-202217848905-A
Country	US
Kind code	B2
Filing date	Jun 24, 2022
Priority date	Jul 22, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

According to certain embodiments, an electronic device comprises: a secure element storing at least one content application and backup data associated with the at least one content application; a memory storing instructions; and a processor electrically connected to the secure element and the memory and configured to executed the instructions, wherein execution of the instructions by the processor causes the processor to perform a plurality of operations comprising: when receiving a message requesting a backup operation from an external electronic device, loading encrypted backup data from the secure element, transmitting the backup data to the external electronic device, and when receiving a message about backup completion from the external electronic device, setting the backup data to an unavailable state.

First claim

What is claimed is:

1. An electronic device comprising:
a secure element storing at least one content application and backup data associated with the at least one content application;
a memory storing instructions; and
a processor electrically connected to the secure element and the memory and configured to execute the instructions, wherein execution of the instructions by the processor causes the processor to perform a plurality of operations comprising:
when receiving a message requesting a backup operation from an external electronic device, loading encrypted backup data from the secure element, transmitting the backup data to the external electronic device, and when receiving a message about backup completion from the external electronic device, setting the backup data to an unavailable state,
when the content application is installed on the external electronic device using the backup data, a message about installation of the content application is transmitted from the external electronic device to a server of the content application.

2. The electronic device of claim 1 , wherein the plurality of operations further comprises:
generating the secure element and a secure channel protocol by using a key stored in the secure element and extracting the backup data from the secure element by using the secure channel protocol.

3. The electronic device of claim 1 , wherein the backup data is stored in a secure element in the external electronic device.

4. The electronic device of claim 1 , wherein the backup data is data encrypted with a key determined by a server of the at least one content application.

5. The electronic device of claim 1 , wherein the backup data comprises at least one of list information about the at least one content application stored in the secure element, information about the state of wireless communication of the content application, information about authority of the content application, and access information of the content application.

6. The electronic device of claim 5 , wherein the backup data further comprises a hash value for at least one of the list information about the content application stored in the secure element, information about the state of wireless communication of the content application, the information about authority of the content application, and the access information of the content application.

7. An external electronic device comprising:
a secure element storing at least one content application and backup data associated with the at least one content application;
a memory storing instructions; and
a processor electrically connected to the secure element and the memory and configured to execute the instructions, wherein execution of the instructions by the processor causes the processor to perform a plurality of operations comprising:
receiving encrypted backup data from an electronic device, decrypting the backup data, installing a content application using the decrypted backup data, transmitting a message about backup completion to the electronic device, and transmitting a message about installation of the content application to a server of the content application and receiving a message about activation of the content application from the server.

8. The external electronic device of claim 7 , wherein the plurality of
operations further comprises:

determining a hash value of the backup data and verifying integrity of the backup data by comparing a hash value in the backup data with the determined hash value.

9. The external electronic device of claim 7 , wherein the backup data comprises at least one of list information about the at least one content application, information about the state of wireless communication of the content application, information about authority of the content application, and access information of the content application.

10. The external electronic device of claim 7 , wherein decryption comprises decrypting the backup data using a symmetric key.

11. The external electronic device of claim 10 , wherein the symmetric key comprises an RSA 2048 key.

12. The external electronic device of claim 7 wherein the secure element comprises an embedded secure element.

13. An electronic device comprising:
a secure element comprising backup data and a backup application configured to manage the backup data;
a memory storing instructions; and
a processor electrically connected to the secure element and the memory and configured to execute the instructions, wherein executing the instructions by the processor causes the processor to perform a plurality of operations, the plurality of operations comprising:
when receiving a backup instruction from a user, loading encrypted backup data from the secure element, decrypting the backup data, reinstalling a content application using the decrypted backup data, and transmitting a message about installation of the content application to a server of the content application.

14. The electronic device of claim 13 , wherein the backup data comprises at least one of list information about the content application, information about a state of wireless communication of the content application, information about authority of the content application, and access information of the content application.

15. The electronic device of claim 13 , wherein the plurality of operations further comprises:
determining a hash value of the backup data and verifying integrity of the backup data by comparing a hash value in the backup data with the determined hash value.

16. The electronic device of claim 13 , wherein decryption comprises decrypting the backup data using a symmetric key.

17. The electronic device of claim 16 , wherein the symmetric key comprises an RSA 2048 key.

18. The electronic device of claim 13 wherein the secure element comprises an embedded secure element.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Donghoon
• Kim Hakhyun
• Cho Daehaeng
• Kwon Eunyoung
• Kim Jongsu

Classifications

• H04L9/0825

  using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates · CPC title

• H04L9/3242

  involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC · CPC title

• H04L9/3249

  using RSA or related signature schemes, e.g. Rabin scheme · CPC title

• G06F11/1469

  Backup restoration techniques · CPC title

• G06F11/1451

  by selection of backup contents · CPC title