FIELD: cryptographic protection of information.
SUBSTANCE: invention relates to data encryption devices in accordance with the Magma algorithm. The device additionally includes a block for converting data of the inverted representation, a block for comparing the results of encryption and a group of blocks for encrypting data in the inverted representation. The data encryption iteration block has an additional input, which is connected to the transfer input of the modulo 232 addition block. A constant value of zero is supplied to this input of the encryption integration unit of the data encryption group in the forward representation, and a constant value of one is supplied in the inverted representation.
EFFECT: improved data protection and accuracy of cryptographic calculations.
2 cl, 4 dwg
