An electronic device and a method for performing a peer to peer (P2P) service in the electronic device are provided. The electronic device includes a communication module, a processor, a memory, and a security module, wherein the memory may be configured to store instructions that, when executed, enable the processor to receive a public key from an external electronic device as a P2P service is requested, transmit, to the external electronic device, an authentication certificate chain generated on the basis of the received public key via the security module, verify an authentication certificate chain received from the external electronic device by using a root authentication certificate stored in the security module, receive encrypted information of the external electronic device from the external electronic device, decrypt the encrypted information of the external electronic device by using a shared key generated according to a result of the verifying of the received authentication certificate chain, and perform the P2P service with the external electronic device via the communication module, on the basis of the decoded information of the external electronic device.