Abstract: There is provided with a blockchain-based evidence data notarization system comprising a user terminal for transmitting the evidence data in accordance with a notarization request; a notary server for transmitting the generated hash value to the user terminal and a notary terminal, respectively; and a blockchain server for receiving a signature written in the hash value from the user terminal and the notary terminal, respectively and generating a smart contract block.

Abstract: Provided with a blockchain-based shared asset trading system for tokenizing and trading a shared asset comprising a plurality of sharer terminals, provided on a sharer side, for transmitting an original warranty containing the appraisal result of the shared asset and transmitting a warranty in which the sharer's signature has been entered to the original warranty; a blockchain network for receiving and storing the original warranty in a smart contract block, issuing a token based on the smart contract block and generating an electronic wallet in which the token is stored; and an electronic wallet management server for receiving the warranty in which the signature has been entered from the plurality of sharer terminals and transmitting a transaction including the warranty in which the signature has been entered to the original warranty.

Abstract: Provided is a method of recognizing a gesture, which includes: storing sensing information of a sensor in a case where the sensing information is obtained by sensing an object within a preset distance from the sensor; and recognizing a gesture from the stored sensing information, wherein said storing of sensing information stores the sensing information obtained by the sensor during a preset time after the sensor senses an object within the preset distance. This method allows a terminal and contents to be controlled by recognizing a gesture of a user even though the user does not touch the terminal screen.

Abstract: A lawful interception apparatus activates, invocates, and terminates a lawful interception using a SIP (session initiation protocol) message that is transmitted and received between a terminal to be intercepted and an IP multimedia subsystem.

Abstract: Provided is a method of recognizing a gesture, which includes: storing sensing information of a sensor in a case where the sensing information is obtained by sensing an object within a preset distance from the sensor; and recognizing a gesture from the stored sensing information, wherein said storing of sensing information stores the sensing information obtained by the sensor during a preset time after the sensor senses an object within the preset distance. This method allows a terminal and contents to be controlled by recognizing a gesture of a user even though the user does not touch the terminal screen.

Abstract: The present invention relates to a deep packet inspection method and device of a wireless communication system. The deep packet inspection method includes: receiving a first deep packet inspection result for a packet of a terminal from a first subnet before a handover when the handover occurs; receiving a second deep packet inspection result for the packet of the terminal from a second subnet after the handover; and coordinating the first deep packet inspection result and the second deep packet inspection result when the handover occurs.

Abstract: The present invention provides a traceback method including: receiving data including router information according to a path of an attacker; filtering the data to hash the data, and storing the resultant hashed information; determining whether the data is normally received on the basis of the hashed information; and predicting a path loss on the basis of the determination result. Therefore, it is possible to perform an accurate IP traceback using a probabilistic packing marking method and a hash-based traceback method.