FIELD: information encryption.
SUBSTANCE: changeable n-th degree primitive polynomials and changeable value of the Galois field extension GF(2q)n are generated and introduced according to the key at the transmitting and receiving sides correspondingly; these values are used for reconfiguration of the key generator. The device contains, at the transmitting and receiving sides correspondingly, a control unit, the input of which is connected to the output of the key information source, a primitive polynomial generation unit generating polynomials of the preset degree and the preset quantity, a memory unit performing retrieval of the given polynomial of the preset degree, a key generator performing synthesis of recurrent shift registers, an encoder, and a decoder.
EFFECT: increased encryption rate and enhanced encryption protection.
2 cl, 1 dwg
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Authors
Dates
2008-07-20—Published
2006-05-19—Filed