Shannon secure error-correcting network codes against global eavesdropper
Xia Shu-tao · Jisuanji gongcheng yu sheji · 2012
To improve the security performance and the transmission rate of SEC network codes against global eavesdroppers,a new secure policy based on secret channels is proposed,and a class of new SEC network codes is constructed by combining the new secure policy and rank-metric error-correcting network codes.The new secure policy secures the transmission by adding random information to source information,and asymptotically reduces the bandwidth for secret sharing to 0 by renewing random information with permutation.With theoretically proving,the following conclusion can be presented: the proposed SEC codes are Shannon secure and able to defeat global eavesdropper.Moreover,the proposed SEC codes will not suffer from any rate loss for the enhanced security.