Information encoding by linear permutations of discrete Walsh transform
Михаил Сергеевич Беспалов, Kirill A. Frolov · Vestnik kibernetiki · 2024
The paper proposes a method for using a code matrix as a private key for the Walsh-Hadamard code. The number of possible code matrices has been calculated. For example, there are almost 10 million possible keys for a Walsh matrix of the order 32, they are also level 5. The paper describes the method of decoding information and the procedure for isolating the code matrix from the encrypted Walsh matrix.