CAJ | 학술논문

针对应用于射频识别( RFID)系统中的Hash链协议在可扩展性和安全性方面存在的缺陷，提出了一种高效可扩展的改进协议。协议提供了标签与阅读器之间的双向认证，通过利用标签ID的唯一性建立了数据索引，并引入用于标识标签被访问次数的访问计数器来提高后台数据库的检索效率，降低了系统计算载荷。利用共享密值与访问计数器的自更新特性以及哈希函数的单向性使协议能够抵抗重放攻击和标签伪装等安全威胁。分析结果表明，协议在运算效率及安全性方面都有所提高，具有较好的可扩展性，适用于标签数目较多的RFID系统。
침대응용우사빈식별( RFID)계통중적Hash련협의재가확전성화안전성방면존재적결함，제출료일충고효가확전적개진협의。협의제공료표첨여열독기지간적쌍향인증，통과이용표첨ID적유일성건립료수거색인，병인입용우표식표첨피방문차수적방문계수기래제고후태수거고적검색효솔，강저료계통계산재하。이용공향밀치여방문계수기적자경신특성이급합희함수적단향성사협의능구저항중방공격화표첨위장등안전위협。분석결과표명，협의재운산효솔급안전성방면도유소제고，구유교호적가확전성，괄용우표첨수목교다적RFID계통。
Considering the scalability and security deficiencies of the Hash-chain protocol used in Radio Frequency Identification ( RFID) system, an efficient and scalable improved protocol was put forward. This protocol provided mutual authentication between tags and readers, improved research efficiency and reduced computation requirement of database through index created by the unique tag ID and introduction of counter used to identify the number of visits. The one-way feature of hash function and self-updating feature of shared secret value and counter made the protocol can resist replay attack and tag camouflage security threats. The analysis results show that the proposed protocol provides high efficiency, strong security and good scalability, and fits for RFID system when the tags number is large.