METHOD FOR ENCRYPTING DATA UNITS Russian patent published in 1998 - IPC

FIELD: electric communications, computer engineering. SUBSTANCE: method involves generation of ENCRYPTING key as set of K sub-keys, generation of machine code of ENCRYPTING program, splitting data units into N sub-units and serial processing of sub-units. In addition method involves generation two types of binary vectors, choosing sub-key number l (where l is not greater than K) using structure of binary vector of first type, binary superposition of l-th sub-key to binary vector of second type and processing i-th sub-unit (where i is not greater than N) by means of binary superposition with second type vector of altered structure. Binary vector of first type is generated using structure of i-th sub-unit and number of sub-key which is used at previous superposition step. Binary vector of second type is generated using structure of j-th sub-unit and structure which it had at previous superposition step. EFFECT: increased speed of non-determined software ENCRYPTING. 6 cl, 3 dwg