Secure network coding for data encoded using subspace codes

Subspace coding is a solution to the error-control problem in noncoherent networks using Random Linear Network Coding (RLNC) as a transmission mechanism. In this paper, we propose a secure error-correction scheme based on a codeword selection method called the Subspace Coding Strategy (SCS) along with a permutation step, as a possible solution for secure transmission of data encoded using subspace codes. Our scheme also makes use of the correction capability of the used code to induce correctable random errors to further mislead the wiretapper. Numerical results and comparative analysis with other schemes from the literature are presented as a verification of the impact of the proposed scheme on transmission security.