Most of the Radio Frequency IDentification (RFID) authentication protocols, proposed to preserve security and privacy, are analysed to show that they can not provide security against some passive or active attacks. In...Most of the Radio Frequency IDentification (RFID) authentication protocols, proposed to preserve security and privacy, are analysed to show that they can not provide security against some passive or active attacks. In this paper, the security of two matrix-based protocols, proposed by Karthikeyan and Nesterenko (KN protocol) and Ramachandra et al. (RRS protocol) that conform to Electronic Product Code Class-1 Generation-2 (EPC Class-1 Gen-2) standard, are investigated. Using the linear relationship of multiplication of matrix and vector, we point out that both protocols can not provide scalability, and they are vulnerable to passive impersonation attack. In addition, both protocols are totally insecure if the adversary can compromise one tag to extract the secrets. A modified lightweight matrix-based authentication protocol is presented, which can resist mainly common attacks on an RFID authentication system including eavesdropping, relay attack, desynchronization attack, impersonation attack and tag tracking attack. The new protocol also has the desirable scalability property and can keep secure under compromising attack.展开更多
金属氧化物薄膜晶体管（metal oxide thin film transistor，MOTFT）由于具有迁移率高、均匀性好、工艺简单、工艺温度低、成本低等优势，非常适合高分辨率、大尺寸液晶显示（LCD）和有源矩阵有机发光二极管显示（AMOLED）等新型显示技...金属氧化物薄膜晶体管（metal oxide thin film transistor，MOTFT）由于具有迁移率高、均匀性好、工艺简单、工艺温度低、成本低等优势，非常适合高分辨率、大尺寸液晶显示（LCD）和有源矩阵有机发光二极管显示（AMOLED）等新型显示技术发展的需要，因此受到业界和学界的广泛关注．结合本课题组的工作，本文阐述了MOTFT的材料、器件结构、制作工艺以及应用，并对影响MOTFT性能的因素进行了讨论．本课题组开发的新型MOTFT迁移率可达35cm^2／（Vs），阈值电压为1．63V，开关比为10^9，亚阈值摆幅为0．21Wdecade．基于自主开发的MOTFT背板，在国内率先实现了3—5英寸彩色AMOLED显示屏、透明AMOLED显示屏以及柔性AMOLED显示屏，展示了MOTFT背板良好的应用前景．展开更多
基金Supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)the National Natural Science Foundation of China (No.60903181)Nanjing University of Posts and Telecommunications Funds (No.NY208072)
文摘Most of the Radio Frequency IDentification (RFID) authentication protocols, proposed to preserve security and privacy, are analysed to show that they can not provide security against some passive or active attacks. In this paper, the security of two matrix-based protocols, proposed by Karthikeyan and Nesterenko (KN protocol) and Ramachandra et al. (RRS protocol) that conform to Electronic Product Code Class-1 Generation-2 (EPC Class-1 Gen-2) standard, are investigated. Using the linear relationship of multiplication of matrix and vector, we point out that both protocols can not provide scalability, and they are vulnerable to passive impersonation attack. In addition, both protocols are totally insecure if the adversary can compromise one tag to extract the secrets. A modified lightweight matrix-based authentication protocol is presented, which can resist mainly common attacks on an RFID authentication system including eavesdropping, relay attack, desynchronization attack, impersonation attack and tag tracking attack. The new protocol also has the desirable scalability property and can keep secure under compromising attack.
文摘金属氧化物薄膜晶体管（metal oxide thin film transistor，MOTFT）由于具有迁移率高、均匀性好、工艺简单、工艺温度低、成本低等优势，非常适合高分辨率、大尺寸液晶显示（LCD）和有源矩阵有机发光二极管显示（AMOLED）等新型显示技术发展的需要，因此受到业界和学界的广泛关注．结合本课题组的工作，本文阐述了MOTFT的材料、器件结构、制作工艺以及应用，并对影响MOTFT性能的因素进行了讨论．本课题组开发的新型MOTFT迁移率可达35cm^2／（Vs），阈值电压为1．63V，开关比为10^9，亚阈值摆幅为0．21Wdecade．基于自主开发的MOTFT背板，在国内率先实现了3—5英寸彩色AMOLED显示屏、透明AMOLED显示屏以及柔性AMOLED显示屏，展示了MOTFT背板良好的应用前景．
