A novel video data authentication model based on digital video watermarking and MAC （message authentication code） in multicast protocol is proposed in this paper, The digital watermarking which composes of the MAC o...A novel video data authentication model based on digital video watermarking and MAC （message authentication code） in multicast protocol is proposed in this paper, The digital watermarking which composes of the MAC of the significant vid eo content, the key and instant authentication data is embedded into the insignificant video component by the MLUT （modified look-up table） video watermarking technology. We explain a method that does not require storage of each data packet for a time, thus making receiver not vulnerable to DOS （denial of service） attack. So the video packets can be authenticated instantly without large volume buffer in the receivers. TESLA （timed efficient stream loss tolerant authentication） does not explain how to select the suitable value for d, which is an important parameter in multicast source authentication. So we give a method to calculate the key disclosure delay （number of intervals）. Simulation results show that the proposed algorithms improve the performance of data source authentication in multicast.展开更多
CAN(Controller Area Network)总线技术的发展令人惊叹,基于CAN的车载总线实现ECU(Electronic Control Unit)分布式实时数据通讯,自由通信,总线仲裁。本文提出了在CAN协议基础上增加ECU间(Key)密钥分配与信息认证,简称MAC(Message Authe...CAN(Controller Area Network)总线技术的发展令人惊叹,基于CAN的车载总线实现ECU(Electronic Control Unit)分布式实时数据通讯,自由通信,总线仲裁。本文提出了在CAN协议基础上增加ECU间(Key)密钥分配与信息认证,简称MAC(Message Authentication Code,信息认证码)。本文会由浅入深阐述当前CAN总线协议基础上的MAC的工作原理与实现方式。展开更多
介绍了基于SYN的分布式拒绝服务(Distributed Denial of Service,DDoS)的原理,提出基于数据包流量的检测方法及包过滤机制。通过计算当前瞬时流量与预测流量的偏离程度及半连接数量,判断主机是否受到攻击。攻击发生后,通过在SYN包中加...介绍了基于SYN的分布式拒绝服务(Distributed Denial of Service,DDoS)的原理,提出基于数据包流量的检测方法及包过滤机制。通过计算当前瞬时流量与预测流量的偏离程度及半连接数量,判断主机是否受到攻击。攻击发生后,通过在SYN包中加入认证码进行过滤,降低分布式拒绝服务攻击的危害。展开更多
基金Supported bythe National Natural Science Foundationof China (60175001)
文摘A novel video data authentication model based on digital video watermarking and MAC （message authentication code） in multicast protocol is proposed in this paper, The digital watermarking which composes of the MAC of the significant vid eo content, the key and instant authentication data is embedded into the insignificant video component by the MLUT （modified look-up table） video watermarking technology. We explain a method that does not require storage of each data packet for a time, thus making receiver not vulnerable to DOS （denial of service） attack. So the video packets can be authenticated instantly without large volume buffer in the receivers. TESLA （timed efficient stream loss tolerant authentication） does not explain how to select the suitable value for d, which is an important parameter in multicast source authentication. So we give a method to calculate the key disclosure delay （number of intervals）. Simulation results show that the proposed algorithms improve the performance of data source authentication in multicast.
文摘CAN(Controller Area Network)总线技术的发展令人惊叹,基于CAN的车载总线实现ECU(Electronic Control Unit)分布式实时数据通讯,自由通信,总线仲裁。本文提出了在CAN协议基础上增加ECU间(Key)密钥分配与信息认证,简称MAC(Message Authentication Code,信息认证码)。本文会由浅入深阐述当前CAN总线协议基础上的MAC的工作原理与实现方式。
文摘介绍了基于SYN的分布式拒绝服务(Distributed Denial of Service,DDoS)的原理,提出基于数据包流量的检测方法及包过滤机制。通过计算当前瞬时流量与预测流量的偏离程度及半连接数量,判断主机是否受到攻击。攻击发生后,通过在SYN包中加入认证码进行过滤,降低分布式拒绝服务攻击的危害。
