Samsung Electronics Co., Ltd.

Byounghak Jin

Jonghwan Kim

Bokun Choi

Yi Yang

In an electronic device and an operating method of an electronic device, according to various embodiments, the electronic device comprises: a communication module frequency performing communication with an external electronic device; and a security module which monitors a change in data relating to an applet for managing a key used for the authentication of the external electronic device, which manages information relating to the applet, and which stores the applet and an applet identification (AID) list including at least one AID, wherein the security module can be configured to receive, from the external electronic device, a signal for requesting the application identifier (AID) list to be transmitted, transmit the AID list to the external electronic device through the communication module in response to the reception of the requesting signal, receive, from the external electronic device, a signal for requesting information relating to an applet associated with at least one AID selected, from among AIDs included in the AID list, by the external electronic device, and transmit, to the external electronic device, information relating to an applet corresponding to the selected AID. Additional various embodiments are possible.

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Gyeonggi-do, South Korea

Byounghak Jin