Device and method for re-signing application package, and terminal device for running application package

• US 9,692,600 B2
• Filed: 01/13/2015
• Issued: 06/27/2017
• Est. Priority Date: 01/13/2014
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Sung Kwon, Cho, Byung Wook
• Primary Examiner(s): Powers, William
• Application Number:
  US14/595,573
• Publication Number:
  US 20150200784A1
• Time in Patent Office: 896 Days
• Field of Search: 713176, 713189
• CPC Class Codes: G06F 21/53 by executing in a restricted environment, e.g. sandbox or secure virtual machine
• CPC Class Codes: G06F 21/54 by adding security routines or objects to programs
• CPC Class Codes: G06F 2221/033 Test or assess software
• CPC Class Codes: G06F 8/61 Installation
• CPC Class Codes: H04L 9/3247 involving digital signatures

Abstract

A device for re-signing an application package is provided. The device includes a communication unit configured to receive an application package comprising a signature key, and a control unit configured to re-sign the application package with a conversion key corresponding to the signature key.

Claims

1. A device for re-signing an application package, the device comprising:

a communication unit configured to receive an application package including first application data and signed by a signature key; and

a processor configured to;

extract the signature key,

generate second application data, at least a portion of the second application data being different from the first application data,

determine a conversion key corresponding to the signature key, and

re-sign the application package including the second application data with the conversion key corresponding to the signature key.

2. The device of claim 1, wherein the processor is further configured to:

map the conversion key to the signature key; and

store the conversion key and the signature key.

3. The device of claim 1, further comprising a key storage unit configured to store the conversion key mapped to the signature key.

4. The device of claim 3, wherein the processor is further configured to:

determine whether the conversion key is mapped to the signature key;

or

determine whether the conversion key mapped to the signature key is stored in the key storage unit.

5. The device of claim 1, wherein the processor is further configured to convert the application package, the converted application package being executable on a terminal device in which the converted application package is installed.

6. The device of claim 5, wherein the processor is further configured to re-sign the converted application package with the conversion key.

7. The device of claim 5, wherein the device is configured execute a security platform in which the converted application package is executed.

8. The device of claim 1, further comprising an input unit configured to receive a signal for creating the conversion key.

9. A method of re-signing an application package, the method comprising:

receiving, by a communication unit, an application package including a first application data and signed by a signature key;

extracting, by a processor, the signature key;

generating, by the processor, second application data, at least a portion of the second application data being different from the first application data;

determining, by the processor, a conversion key corresponding to the signature key; and

re-signing, by the processor, the application package including the second application data with the conversion key corresponding to the signature key.

10. The method of claim 9, wherein the re-signing of the application package further comprises:

creating the conversion key mapped to the signature key upon determining that the conversion key mapped to the signature key is not stored; and

re-signing the application package with the conversion key.

11. The method of claim 9, wherein the re-signing of the application package further comprises:

extracting the conversion key upon determining that the conversion key mapped to the signature key is stored; and

re-signing the application package with an extracted conversion key.

12. The method of claim 10, further comprising:

mapping the conversion key to the signature key; and

storing the conversion key and the signature key.

13. The method of claim 9, further comprising converting the application package.

14. The method of claim 13, wherein the re-signing of the application package further comprises signing the converted application package with the conversion key.

15. An electronic device comprising:

a memory configured to store a first application package;

a converter configured to convert the first application package into a second application package; and

a processor configured to;

extract a signature key from the first application package;

generate a private key based on the signature key; and

sign the second application package with the generated private key.