Security Analysis and Improvement of a Tag Encoding Authentication Scheme for Network Coding  

作　　者：LIU Guangjun 

机构地区：[1]School of Information Engineering, Xi'an University

出　　处：《Wuhan University Journal of Natural Sciences》2016年第5期394-398,共5页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(61271174,61301178);the Specific Scientific Research Plan Project of Shaanxi Education Department(15JK2150);the Science and Technology Innovation Foundation of Xi’an(CXY1352WL28,CXY1531WL38)

摘　　要：A tag encoding authentication scheme for network coding proposed by Wu et al was claimed to defend pollution attacks efficiently. However, we find that the scheme easily incurs multi-generation pollution attacks, where an adversary may be able to recover the main secret key of the source with high probability during multi-generation transmitting, and the scheme also cannot resist against inter-generation pollution attacks. Using a dynamic source secret key technology that the key can be updated with the change of generation identifier, an improved scheme is then presented, which can counteract these security defects without any efficiency compromise.A tag encoding authentication scheme for network coding proposed by Wu et al was claimed to defend pollution attacks efficiently. However, we find that the scheme easily incurs multi-generation pollution attacks, where an adversary may be able to recover the main secret key of the source with high probability during multi-generation transmitting, and the scheme also cannot resist against inter-generation pollution attacks. Using a dynamic source secret key technology that the key can be updated with the change of generation identifier, an improved scheme is then presented, which can counteract these security defects without any efficiency compromise.

关 键 词：network coding pollution attack inter-generation pollution attack multi-generation pollution attack 

分 类 号：TN918.91[电子电信—通信与信息系统]