FIELD: medicine.
SUBSTANCE: round device realising a sequence of actions for each data encryption device, comprises a summation unit CM1, a substitution box K, a shift unit R, an extra register PREG. In view of using the extra register, a maximum clock frequency in the data flow chart is determined by a maximum delay in the unit CM1, and in the boxes S and R.
EFFECT: higher clock frequency of the encryption device.
3 dwg
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