Page 109 - Cyber Defense eMagazine January 2023
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apply some diagonal square matrix which external elements could serve as a protection shield where
such core element can be used to transfer plaintext data. Mathematical modelling in such a manner will
be considered in this paper in order to explain to engineering teams how to solve such a technical task.
The mathematical model is as follows.
A 1 B 1 C 1
D 1 S E 1 (1)
F 1 G 1 H 1
The equation (1) is a typical example of link encryption demonstrating how a shield protection should
look like. In such a formula, it’s needed to define all internal and external elements as follows:
,
A 1 , B C D E F G H are external elements of the matrix which serve to carry on protection shield,
,
,
,
,
,
1
1
1
1
1
1
1
while S is a core member of the matrix which role is to transfer in case of link encryption some plaintext
signal.
On the other hand, there will be considered some mathematical model of absorbing link encryption which
strongly relies on findings from the article [17]. The mathematical description is as follows:
A = 1 A A (2)
where such an external member of the matrix is put through 2-bit binary algebra function using AND logic
gate to produce 0 in any case.
B = 1 B B (3)
where such an external member of the matrix is put through 2-bit binary algebra function using AND logic
gate to produce 0 in any case.
C = 1 C C (4)
Cyber Defense eMagazine – January 2023 Edition 109
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