Patent ID: 8380977
Filing Date: 2013-02-19
Classification: H04L

Abstract:
1. A peer-to-peer communication method for Near Field Communication (NFC), comprising the steps of: predetermining by a user whether to provide link level security for each node transmitting in NFC; setting a link-level security for each application program to be communicated via peer-to-peer communication by a user of an initiator terminal that communicates via NFC; transmitting a link-level security request to a target terminal that communicates via NFC to start a link-level security for encryption and decryption at a data link layer of an Open Systems Interconnection (OSI) protocol by the initiator terminal, and receiving a link-level security response from the target terminal via NFC; encrypting transmission data using the set link-level security for an application program corresponding to the transmission data at link-level security layers of the initiator terminal, and transmitting the encrypted data to the target terminal by the initiator terminal; transmitting the link-level security release request to the target terminal to release link-level security by the initiator terminal, and receiving the link-level security release response from the target terminal; wherein each of the initiator terminal and the target terminal has an NFC protocol stack, the NFC protocol stack comprising a Logical Link Control Protocol (LLCP) layer for link management, segmentation and reassembly, and connectivity to a plurality of upper-layer protocols, and a security layer being a sub-layer of the LLCP layer, for notifying starting and releasing via NFC a key exchange and encryption to provide the link-level security.