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
Network coding is vulnerable to pollution at- tacks, which prevent receivers from recovering the source message correctly. Most existing schemes against pollution attacks either bring significant redundancy to the ori...Network coding is vulnerable to pollution at- tacks, which prevent receivers from recovering the source message correctly. Most existing schemes against pollution attacks either bring significant redundancy to the original message or require a high computational complexity to ver- ify received blocks. In this paper, we propose an efficient scheme against pollution attacks based on probabilistic key pre-distribution and homomorphic message authentication codes （MACs）. In our scheme, each block is attached with a small number of MACs and each node can use these MACs to verify the integrity of the corresponding block with a high probability. Compared to previous schemes, our scheme still leverages a small number of keys to generate MACs for each block, but more than doubles the detection probability. Mean- while, our scheme is able to efficiently restrict pollution prop- agation within a small number of hops. Experimental results show that our scheme is more efficient in verification than existing ones based on public-key cryptography.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Network coding is vulnerable to pollution at- tacks, which prevent receivers from recovering the source message correctly. Most existing schemes against pollution attacks either bring significant redundancy to the original message or require a high computational complexity to ver- ify received blocks. In this paper, we propose an efficient scheme against pollution attacks based on probabilistic key pre-distribution and homomorphic message authentication codes （MACs）. In our scheme, each block is attached with a small number of MACs and each node can use these MACs to verify the integrity of the corresponding block with a high probability. Compared to previous schemes, our scheme still leverages a small number of keys to generate MACs for each block, but more than doubles the detection probability. Mean- while, our scheme is able to efficiently restrict pollution prop- agation within a small number of hops. Experimental results show that our scheme is more efficient in verification than existing ones based on public-key cryptography.
