FIELD: data encryption.
SUBSTANCE: cryptoalgorithm, involutive matrix, Kronecker product, computational complexity. Modifying the cipher with an involutive key matrix of the plaintext size, represented as the Kronecker product of K elementary involutive matrices, which avoids reversing the key matrix for decryption.
EFFECT: increasing the cryptographic strength of the encryption algorithm.
1 cl, 1 dwg
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