Patent ID: 9524391
Filing Date: 2016-12-20
CPC Classification: G06F

Claim Text:
1. A method in a portable terminal, the method comprising: receiving, by an application processor, application data inputted corresponding to execution of an application; transmitting, by the application processor, the received application data, a device unique key assigned to the portable terminal and an application identification assigned to the application, to a platform system processor; generating, by the platform system processor, an application unique key for encrypting the received application data using the device unique key and the application identification; encrypting, by the platform system processor, the received application data using the application unique key; transmitting, by the platform system processor, the encrypted application data to a file system processor; storing, by the file system processor, the encrypted application data in a file system; receiving, by the platform system processor, a request for the application data input corresponding to the application from the application processor and generating, by the platform system processor, the application unique key from the device unique key and the application identification; and decoding, by the platform system processor, the encrypted application data by using the application unique key and outputting, by the platform system processor, the decoded application data to the application processor.