The use of radio frequency identification (RFID) tags may cause privacy violation of users carrying an RFID tag. Due to the unique identification number of the RFID tag, the possible privacy threats are information le...The use of radio frequency identification (RFID) tags may cause privacy violation of users carrying an RFID tag. Due to the unique identification number of the RFID tag, the possible privacy threats are information leakage of a tag, traceability of the consumer, denial of service attack, replay attack and impersonation of a tag, etc. There are a number of challenges in providing privacy and security in the RFID tag due to the limited computation, storage and communication ability of low-cost RFID tags. Many research works have already been conducted using hash functions and pseudorandom numbers. As the same random number can recur many times, the adversary can use the response derived from the same random number for replay attack and it can cause a break in location privacy. This paper proposes an RFID authentication protocol using a static identifier, a monotonically increasing timestamp, a tag side random number and a hash function to protect the RFID system from adversary attacks. The proposed protocol also indicates that it requires less storage and computation than previous existing RFID authentication protocols but offers a larger range of security protection. A simulation is also conducted to verify some of the privacy and security properties of the proposed protocol.展开更多
Network Time Protocol(NTP)是用来使计算机及网络设备时间同步化的一种协议,其目的是为各种网络设备提供高精准度的时间校正。伴随着高校网络设备数量爆炸式增长,我们所依赖的文件服务器、邮件服务器、互联网网关等诸多网络设备之间都...Network Time Protocol(NTP)是用来使计算机及网络设备时间同步化的一种协议,其目的是为各种网络设备提供高精准度的时间校正。伴随着高校网络设备数量爆炸式增长,我们所依赖的文件服务器、邮件服务器、互联网网关等诸多网络设备之间都需要一个精准的时钟作为信息共享的基础,因为数据共享、设备日志和网络安全是互联网上最常用也是最易遭受攻击的信息。为确保网络设备安全,网络工程师需要精准的时间确保这些应用及其它关键网络应用的安全。本文基于NTP协议网络应用时间戳同步机制的研究,可有效应用于高校网络中,使所有网络设备的时间戳具有高度统一性。所以在互联网中设计专门的时间服务器为需要精准时间的网络设备同步成为当今日益复杂网络应用环境的现实需求。展开更多
文摘The use of radio frequency identification (RFID) tags may cause privacy violation of users carrying an RFID tag. Due to the unique identification number of the RFID tag, the possible privacy threats are information leakage of a tag, traceability of the consumer, denial of service attack, replay attack and impersonation of a tag, etc. There are a number of challenges in providing privacy and security in the RFID tag due to the limited computation, storage and communication ability of low-cost RFID tags. Many research works have already been conducted using hash functions and pseudorandom numbers. As the same random number can recur many times, the adversary can use the response derived from the same random number for replay attack and it can cause a break in location privacy. This paper proposes an RFID authentication protocol using a static identifier, a monotonically increasing timestamp, a tag side random number and a hash function to protect the RFID system from adversary attacks. The proposed protocol also indicates that it requires less storage and computation than previous existing RFID authentication protocols but offers a larger range of security protection. A simulation is also conducted to verify some of the privacy and security properties of the proposed protocol.
基金supported in part by the school scientific research project of Beijing University of Civil Engineering and Architecture,(101203308)
文摘Network Time Protocol(NTP)是用来使计算机及网络设备时间同步化的一种协议,其目的是为各种网络设备提供高精准度的时间校正。伴随着高校网络设备数量爆炸式增长,我们所依赖的文件服务器、邮件服务器、互联网网关等诸多网络设备之间都需要一个精准的时钟作为信息共享的基础,因为数据共享、设备日志和网络安全是互联网上最常用也是最易遭受攻击的信息。为确保网络设备安全,网络工程师需要精准的时间确保这些应用及其它关键网络应用的安全。本文基于NTP协议网络应用时间戳同步机制的研究,可有效应用于高校网络中,使所有网络设备的时间戳具有高度统一性。所以在互联网中设计专门的时间服务器为需要精准时间的网络设备同步成为当今日益复杂网络应用环境的现实需求。
