METHOD FOR STREAM-WISE ENCODING OF DISCONTINUOUS INFORMATION Russian patent published in 2005 - IPC

FIELD: computer science, communications.

SUBSTANCE: method includes generating a protection key in form of a binary vector n-bit long, sending it for primary filling of displacement register, generating pseudo-random series of maximal length, generating pseudo-random series of symbols, transforming data stream to encrypted message and transmitting the latter along communication line, while pseudo-random series is generated as pseudo-random series of symbols of finite field F_p with characteristic p=2^k+1 in form of binary vectors k-nit long by getting information from k different bytes of displacement register with check connection, numbers of which are determined on basis of protection key, and number k is selected equal to one of members of geometric row, which has denominator and first member equal to two, and also a pseudo-random series of symbols is formed for finite field of odd values of symbols due to skipping clock pulses of displacement register with check connection for which pseudo-random series symbols take even values and serially transforming in finite field F_p symbols of source text by involution thereof, appropriate for pseudo-random series symbols.

EFFECT: higher resistance to attacks on basis of known and sorted out texts.

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