Table 2 Notations and descriptions.

From: DynBlock: dynamic data encryption with Toffoli gate for IoT

Notations

Descriptions

KE

Expanded key according to calculated block size

\(\mathrm {\oplus }\)

Bitwise-XOR operation

X

Divide plaintext into blocks

.

Concatenation of two binary strings

SK

Sub keys

%

Mod

P

Permutated blocks

S

Substituted blocks