Many block ciphers in cryptography use Maximum Distance Separable (MDS) matrices to strengthen the diffusion layer. Rhotrices are represented by coupled matrices. Therefore, use of rhotrices in the cryptographic ciphers doubled the security of the cryptosystem. We define Hankel rhotrix and further construct the maximum distance separable rhotrices over finite fields.
Sharma, P. L.; Kumar, Arun; and Gupta, Shalini
Hankel Rhotrices and Constructions of Maximum Distance Separable Rhotrices over Finite Fields,
Applications and Applied Mathematics: An International Journal (AAM), Vol. 14,
2, Article 38.
Available at: https://digitalcommons.pvamu.edu/aam/vol14/iss2/38