An arrangement for protecting data saved in a memory, in which arrangement
at least one memory element and at least one data processing element are
combined by means of required interfaces into a data processing entity.
The arrangement comprises at least one scrambler (300, 410, 600)
connected to the data processing entity, which scrambler (300, 410, 600)
scrambles the form in which the data to be saved in the memory element is
represented and/or descrambles data saved in the memory element into
plain text when data is taken from the memory element for the use of the
data processing elements.