RANDOM NUMBER GENERATOR AND STREAM CIPHER Russian patent published in 2018 - IPC G06F7/58 H04L9/06 

FIELD: computing; counting.

SUBSTANCE: group of inventions relates to the field of encryption and can be used to generate a sequence of random numbers. Device comprises electronic parameter storage (110) configured to store multiple functions and for each function of the multiple functions an associated modulus, not all moduli being equal, and electronic function evaluation device (120) configured to generate an internal sequence of random numbers, the function evaluation device being configured to generate a next number in the internal sequence of random numbers by, for each function of the multiple functions, evaluating the function for a previously generated value in the internal sequence of random numbers modulo the modulus associated with the evaluating function, thereby obtaining multiple evaluation results, and applying a combination function to the multiple evaluation results to obtain the next number in the internal sequence, and output (140) configured to generate a next number in the sequence of random numbers from the generated next number in the internal sequence.

EFFECT: technical result improved protection against cryptographic attacks.

13 cl, 5 dwg