Abstract
Abstract Problems of data security are becoming increasingly acute. This study of these basic problems has been carried out in cooperation between scientists at the Department of Electrical Engineering at Linkoping Institute of Technology and FOA 3 (Forsvarets Forskningsanstalt Planeringsbyran — Research Institute of National Defense, Operations Research Center). The situation considered is an office with individual work stations having desktop computers. These communicate among themselves and share a host computer of higher capacity including special purpose input/output equipment. Among questions discussed are: • ∗ problems related to the protection of data bases • ∗ ease of selectively designating addressees and authorisation to access data and messages; key distribution and protection • ∗ general requirements for equipment needed in such a local net environment. No attempt has been made to predict when such distributed office computer systems will become commonly available in full scale. It does, however, seem clear that they are at least technically feasible already.
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