Istituto di Scienza e Tecnologie dell'Informazione     
Corsini P., Frosini G., Lopriore L. Implementing multiple authorizations by extended capabilities. In: Congresso annuale AICA (Pavia, 23-25 Settembre 1981). Atti, vol. 2 pp. 559 - 563. 1981.
In a protected system, we deal with a multiple authorization when a subject is allowed to access a protected object only if several other subjects agree. In this paper, such a problem is examined, and a solution is given with reference to an extended capability environment. The solution presented holds [or every number of agreeing subjects. Application problems are briefly illustrated.

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