Efficient Schemes for Securing Network Coding Against Wiretapping  

作　　者：LIU Guangjun ZHOU Hang 

机构地区：[1]State Key Laboratory of Integrated Service Networks, Xidian University [2]College of Science, Engineering University of the Chinese People's Armed Police Force

出　　处：《Wuhan University Journal of Natural Sciences》2013年第4期355-362,共8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(6127117)

摘　　要：Existing solutions for secure network coding either bring significant bandwidth overhead or incur a high computational complexity. For exploiting low-overhead mechanism for secure network coding against wiretapping, three efficient schemes are proposed for the applications with different security requirements. The basic idea behind this paper is first to encrypt a small part of source vectors and then subject the remaining original source vectors and the encrypted vectors to a special linear transformation. Also, a lightweight version of this scheme is then presented for resource-constrained networks. Moreover, an extensive scheme with enhanced security is also considered. All proposals are shown to have properties of lower security complexity and smaller bandwidth usage compared with the existing solutions. Also, the proposals can be easy to achieve flexible levels of security for various applications.Existing solutions for secure network coding either bring significant bandwidth overhead or incur a high computational complexity. For exploiting low-overhead mechanism for secure network coding against wiretapping, three efficient schemes are proposed for the applications with different security requirements. The basic idea behind this paper is first to encrypt a small part of source vectors and then subject the remaining original source vectors and the encrypted vectors to a special linear transformation. Also, a lightweight version of this scheme is then presented for resource-constrained networks. Moreover, an extensive scheme with enhanced security is also considered. All proposals are shown to have properties of lower security complexity and smaller bandwidth usage compared with the existing solutions. Also, the proposals can be easy to achieve flexible levels of security for various applications.

关 键 词：network coding SECURITY wiretapping pseudorandom function ENCRYPTION 

分 类 号：TP305[自动化与计算机技术—计算机系统结构]