FIELD: information technologies.
SUBSTANCE: according to the first method in lock and key secret code is recorded, for lock opening it is checked, whether condition of any i cell in lock and key is identical or not, program is made in memorising device of lock so that in case of conditions matching lock performs previously determined set of operations, if at least in one cell conditions are not matching, then lock performs another, also planned set of operations, after every completed process of opening secret code is automatically changed, which is recorded in key and lock according to specified program. In the second method ratio is used for mixed counting system.
EFFECT: increased cryptographic resistance.
4 cl
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