METHOD FOR THREE-DIMENSIONAL NONLINEAR REPLACEMENT TRANSFORMATION Russian patent published in 2014 - IPC H04L9/00 G06F21/60 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering and telecommunication and is intended to solve the problem of protecting computer information. The method of performing three rounds of transformation is carried out along x, y, z axes. The first round involves performing N two-dimensional replacement transformations of layers L_x0, L_x1, …, L_x(N-1); the second round involves N two-dimensional replacement transformations of layers L_y0, L_y1, …, Ly_(N-1); the third round involves N two-dimensional replacement transformations of layers L_z0, L_z1, …, L_z(N-1).

EFFECT: high speed of operation by increasing degree parallelism.

5 dwg, 1 tbl