Generator (2) of chaotic sequences of integer numbers represented in a predetermined number of bits, said sequences being intended to be used especially in encryption systems based on key information, said generator consisting of a number m of means (4 , 6, 8, 10) of application of non-linear functions, characterized in that, at the output of said means (4, 6, 8, 10) of application of non-linear functions, of combination means (20) suitable for combining the outputs of said means (4, 6, 8, 10) of application of non-linear functions by application of a given binary diffusion matrix, which allows obtaining a number m of outputs, each output value being calculated by a binary combination of outputs of said means (4, 6, 8, 10) of application of non-linear functions, the output values being input again of the means of application of non-linear functions.
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