Abstract: 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.

Abstract: An architectural solution in which standalone ad-hoc network cells are used as an extension of the backbone infrastructure in terms of network architecture or/and its service capabilities is provided. These Ad-Hoc networks will integrate to the Internet via cellular and other access networks. This integration brings new possibilities to network operators and ISP's. In its extended architecture, it is envisaged that the mobility issues are handled by utilizing the IP mobility capabilities, taking into account the mobile mesh Ad-Hoc specific requirements.