METHOD OF ADAPTIVE STREAM ENCRYPTION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC G09C1/00 H04L9/00 

FIELD: information encryption.

SUBSTANCE: changeable n-th degree primitive polynomials and changeable value of the Galois field extension GF(2^q)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