Digital device and method for performing secure communication using same

摘要

Disclosed is a method for performing secure communication using a digital device. The method includes outputting a light pattern using a radiator of a proximity sensor unit; and detecting the proximity of an object using the proximity sensor unit. Further, the method includes, when the object is in proximity within a predetermined distance range, extracting key generation information for the secure communication using the light pattern outputted from the radiator; generating a security key using the key generation information; and performing the secure communication with an external device using the generated security key.

主权项

1. A method for performing secure communication between a digital device and an external device, using the digital device having a radiator of a proximity sensor and a receiver of a proximity sensor, the method comprising:
outputting a first light pattern using the radiator of the proximity sensor; and detecting a proximity of an object using the proximity sensor; when the object approaches within a predetermined distance range from the digital device, extracting key generation information based on a second light pattern received through the receiver of the proximity sensor, the second light pattern being the first light pattern reflected by the object; generating a security key using the key generation information; performing the secure communication with the external device using the generated security key; approaching to data stored in the external device; obtaining attribute information corresponding to the data, wherein the data includes first data which requires security and thereby has a private attribute as the attribute information and second data which does not require the security and thereby has a public attribute as the attribute information; and storing log information of the data based on the attribute information corresponding to the data, wherein said storing comprises: storing the log information in a first storage unit when the attribute information is the public attribute; and storing the log information in a second storage unit when the attribute information is the private attribute; wherein the extracting the key generation information comprises extracting the key generation information based on the second light pattern when the second light pattern is equal to the first light pattern.