ELECTRONIC COMPUTER FOR PERFORMING ARITHMETIC WITH OBFUSCATION Russian patent published in 2019 - IPC G06F7/72 

FIELD: calculating; counting.

SUBSTANCE: group of inventions relates to computer engineering and can be used to perform obfuscation arithmetic in a commutative ring. Device comprises a storage configured to store a table of increments (T), determined for increment of annular element (1; u^t), wherein table of increments displays input circular element (k = u^k₁-u^k₂) to output integer list (T((k₁,k₂) = (l₁,l₂)) encoding output circular element (l = u^l₁-u^l₂), so, that outlet annular element is equal to annular increment element, annularly folded with inlet annular element (l = k + 1). Using a table of increments, the ring addition unit adds the first input integer list ((a₁,a₂)), encoding a first input adder for addition of a circular element, and a second input for addition of an integer list ((b₁,b₂)) encoding the second input element for addition of a ring element. Device may contain an annular multiplying unit which also uses a table of increments.

EFFECT: technical result is improved security.

17 cl, 10 dwg, 1 tbl