Abstract:
리더가 다수의 태그 중에서 특정 태그를 검색하되, XOR 체인 기반 인증 기법을 적용하여 XOR연산 및 해쉬연산만으로 검색할 태그를 인증하는 RFID 태그 검색방법 및 RFID 리더 장치에 있어서, (a) 리더는 모든 태그의 암호키를 모두 XOR연산한 값(이하 총 인증정보)과 총 인증정보에 각 태그의 암호키를 XOR연산한 값(이하 개별 인증정보)을 저장하는 단계; (b) 리더는 검색하고자 하는 태그(이하 검색 태그)의 개별 인증정보를 제1 인증값으로 생성하고, 총 인증정보에 제1 카운터를 XOR연산하여 제2 인증값을 생성하고, 제1 및 제2 인증값을 태그로 전송하는 단계; (c) 태그는 자신의 암호키와 제1 인증값을 XOR연산하여 제1 결과를 생성하고, 제2 인증값으로 제2 결과를 생성하고, 제1 및 제2 결과를 XOR 연산하여 제2 카운터를 생성하는 단계; 및, (d) 리더는 제2 카운터를 수신하여 제1 카운터와 대비하여 검색 태그를 인증하는 단계를 포함하는 구성을 마련한다. 상기와 같은 방법 및 장치에 의하여, XOR 체인 기반 인증 기법을 적용하여 XOR연산 및 해쉬연산만을 이용하여 인증함으로써, 기밀성, 추적 불가능성, 및 메시지 재생공격을 방지하면서도 연산량을 적게 할 수 있다.
Abstract:
PURPOSE: An RFID mutual authentication method based on random ID capable of detecting impersonation attack of a server and a reader is provided to increase mutual authentication by improving server detection rate on a tag search of a server. CONSTITUTION: An RFID system comprises multiple readers(10), multiple tags(20), and server(30). The RFID system additionally constitutes a database(40) for storing data. The tag transmits receives radio signals from the reader and transmits the stored data to the reader. The reader receives signals from the tag response to the radio signal by broadcasting wireless signals. The server stores the information about the tag and the reader.
Abstract:
PURPOSE: An RFID mutual authentication method based on random ID capable of detecting impersonation attack of a server and a reader is provided to increase mutual authentication by improving server detection rate on a tag search of a server. CONSTITUTION: An RFID system comprises multiple readers(10), multiple tags(20), and server(30). The RFID system additionally constitutes a database(40) for storing data. The tag transmits receives radio signals from the reader and transmits the stored data to the reader. The reader receives signals from the tag response to the radio signal by broadcasting wireless signals. The server stores the information about the tag and the reader.
Abstract:
PURPOSE: A safe and effective RFID(Radio Frequency Identification) tag searching method and RFID reader apparatus are provided to prevent a message playback attack by using an XOR calculation method and a hash calculation method. CONSTITUTION: A memory unit(11) stores total authentication information and individual authentication information. The total authentication information is related to the encryption key of tags. The individual authentication information is related to a first authentication value. A control unit(12) creates the first authentication value from the individual authentication information of a search tag and creates a second authentication value by calculating the total authentication information and a first counter. The control unit transmits the first and the second authentication value to the tag, compares a second counter received from the tag with the first counter, and authenticates the searching tag.
Abstract:
PURPOSE: An IP trace back method of an IPv6 based network attack packet and recording medium thereof are provided to trace a transmission path by extracting trace back information of a received packet. CONSTITUTION: A terminal(12) collects a sample packet. The terminal extracts trace back information. The terminal transmits trace back information to a router(30) in order to request trace back information. The router inspects the integrity of trace back information.