Abstract:
Sensing data relay apparatus and method, sensing data management apparatus and method, a sensor network system thereof are provided to prevent data loss and transmission delay by stably transmitting data in a state that security information and close nodes are not established. A pre-authentication data delay unit(211) relays first sensing data received from a mobile sensor node(200) to a base node(220) at minimum transmission rate, and a security information receiving unit(212) receives and stores not only share encryption key about the mobile sensor node but also re-setup data transmission rate from the base node. An authentication unit(213) authenticates second sensing data received from the mobile sensor node with the share encryption key, and a post-authentication data relay unit(214) relays the authenticated second sensing data to the base node at the re-setup data transmission rate.
Abstract:
교통 신호 제어 장치 및 시스템과 그 제어 방법이 개시된다. 교통 신호 제어 장치는 감지 가능한 제1 구역으로 진입 또는 제1 구역을 통과하는 차량들의 통행량들을 감지하고, 감지된 제1 구역 통과 차량 통행량에 관한 정보를 주변의 다른 교통 신호 제어 장치에 송신하고, 제1 구역과 인접한 적어도 하나의 다른 신호 표시부 주변의 제2 구역을 통과한 차량들의 통행량에 관한 정보를 수신하며, 감지된 제1 구역 진입 차량 통행량에 관한 정보와 수신된 제2 구역 통과 차량 통행량에 관한 정보에 기초하여 교통 신호 표시를 표시한다. 이러한 교통 신호 제어 장치와 이들로 이루어진 교통 신호 제어 시스템을 통하여 도로망 전체에 대하여 효율적인 신호제어 및 통행량의 원만한 흐름을 가능하게 한다. 교통 신호, 제어, 센서 네트워크
Abstract:
A method and a system for detecting bogus sensor nodes in a wireless sensor network are provided to judge whether or not data is forged in a wireless relay interval by directly checking the forged data without sensor nodes that relay data. A first sensor node(110) transmits first data to a wireless relay section(120), and receives second data corresponding to the first data from a second sensor node. The first sensor node judges whether or not the first data are forged in the wireless relay section based on the comparison of the received second data with the first dat. The second sensor node receives the first data from the sensor nodes adjacent sensor node, and generates the second data by processing the received first data.
Abstract:
An apparatus and a system for controlling a traffic signal are provided to improve efficiency of traffic control by controlling a traffic signal display by transmitting and receiving the information about the travel quantity. A traffic signal control device includes a signal display unit(210), a traffic sensor(220), a wireless transceiver(230), a signal controller(240). The signal display unit displays the traffic signal for controlling the road traffic. The traffic sensor senses the travel quantity of the vehicles passing through and entering a first area around the signal display unit. The wireless transceiver transmits the information about the travel quantity of the vehicle passing through the first area and receives the information about the travel quantity of the vehicles passing through the second area around the other signal display unit adjacent to the first area. The signal control unit controls the traffic signal display of the signal display unit based on the sensed travel quantity of the vehicles entering the first area and the received travel quantity of the vehicles passing through the second area.
Abstract:
A method, an apparatus, and a system for securing communications among sensor nodes are provided to improve a security level by providing security information to the sensor nodes. A security apparatus includes a key generator(10), an encoder(11), and a controller(12). The key generator generates first keys for respective sensor nodes and generates a second key according to a request. The encoder encodes the second key by using the first keys corresponding to first and second ID values. The controller transmits the first and second ID values from the first sensor node to the encoder, delivers a request for the second key from the first sensor node to the key generator, and transmits the first keys to the corresponding sensor nodes using a wire-line. The controller transmits the encoded second key to the first sensor nodes using a wireless scheme.
Abstract:
A method, an apparatus, and a system for securing communications among sensor nodes are provided to improve a security level by providing security information to the sensor nodes. A security apparatus includes a key generator(10), an encoder(11), and a controller(12). The key generator generates first keys for respective sensor nodes and generates a second key according to a request. The encoder encodes the second key by using the first keys corresponding to first and second ID values. The controller transmits the first and second ID values from the first sensor node to the encoder, delivers a request for the second key from the first sensor node to the key generator, and transmits the first keys to the corresponding sensor nodes using a wire-line. The controller transmits the encoded second key to the first sensor nodes using a wireless scheme.
Abstract:
A system and a method for hiding an RFID(Radio Frequency IDentification) tag ID are provided to secure security of a mobile RFID service by hiding the RFID tag ID attached to an article, as the RFID tag ID is continuously changed by using a mobile terminal embedded with an RFID reader. A temporary ID generator(202) generates a temporary ID for hiding a unique ID of the RFID tag(101) attached to the article from the outside by encoding the unique ID of the RFID tag. An ID recoding controller(203) records the generated temporary ID to a tag ID recording area of the RFID tag. An ID decoder(204) decodes the recorded temporary ID in case that a situation for using the unique ID is generated after the temporary ID is recorded to the recording area. The temporary ID is generated by concatenating a random number to the unique ID.
Abstract:
본 발명은 모바일 IPv6 환경에서 라디우스 기반 AAA 서버의 세션키 분배 방법에 관한 것으로, (a) 이동 노드와 AAA 홈 서버간 인증을 수행하는 단계; (b) 상기 (a)단계에서 인증이 이루어지는 경우, 상기 AAA 홈 서버는 이동 노드와 홈 에이전트와 함께 공유하는 SPI 테이블에서 선택된 SPI value를 선택하고, 상기 이동 노드와 함께 공유하는 공유된 비밀키(shared secret), 의사 랜덤값 생성기에서 생성된 난수(key material), 사용자 식별정보(NAI) 및 세션키 선택 신호를 입력으로 하는 해쉬값인 상기 이동 노드와 상기 홈 에이전트간의 IPSec 보안연관 설정을 하도록 하는 세션키를 생성하는 단계; (c) 상기 AAA 홈 서버는 상기 (b)단계에서 생성된 세션키와 SPI value를 별도의 보안 프로토콜에 의해서 보호되는 상기 홈 에이전트로 전송하는 단계; (c) 상기 AAA 홈 서버는 상기 홈 에이전트로부터 Access-Request 메시지를 전송받는 단계; 및 (d) 상기 홈 에이전트로부터 Access-Request 메시지를 전송받는 경우에, 상기 홈 서버는 상기 이동 노드로 SPI value와 상기 난수를 전송하는 단계;로 구성된다. 따라서, AAA 시스템 자체 보안 채널을 통하여 IPSec의 IKE 보안연관 단계를 간략화하여 줌으로써 저전력, 저컴퓨팅 능력의 이동 노드에 효율적이다.
Abstract:
본 발명은 MIPv6(mobile internet protocol version 6) 이동단말에 대한 다이어미터 서버의 인증 방법에 관한 것으로, 상기 인증 방법은 기존의 MIPv6 다이어미터 서버의 표준에 정의되어 있지 않은 인증 메시지의 교환 방식을 EAP의 표준과 다이어미터 MIPv6 응용 표준을 따라 정의하여 준다. 그 결과, 다이어미터 서버가 다양한 EAP 기법을 통해 MIPv6 이동 단말에 대해 안전한 인증을 제공할 수 있게 된다.
Abstract:
PURPOSE: A duplexing method of an AAA(Authentication, Authorization, Accounting) system is provided to reduce a trouble recovery time of an AAA system maximally. CONSTITUTION: A duplexed AAA application of an AAA system(server) active/standby server and an AAA application of other system(client) are initialized and started on an idle state(40). The lower security related setting procedure event is generated from each AAA application(41). A TLS(Transport Layer Security) and SCTP(Stream Control Transmission Protocol) layer of the active/standby server executes a lower security related setting procedure of an active server and a standby server(42). A client AAA application starts a communication with an activated server, that is, an AAA service is progressed(43). If a trouble is generated in the active server and an AAA service is stopped(44), the client system which is not communicated with an activated server senses a status of an activated server and checks a security related setting with deactivated server(45).