FIELD: devices for encrypting. SUBSTANCE: device has n-byte key register, one- byte information register , functional conversion unit , first, second and third four-bit modulo-two adders , r-byte register , N- bit register . Device, which can be implemented in chip having only two thousand gates, provides possibility to use encrypting key which length prohibits it from decoding by trial during reasonable period of time. EFFECT: increased functional capabilities. 3 cl, 1 dwg
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