baten A file is encrypted by using an encryption function E and a key k. No other protection checks are made by the file system. If the user wishes to share the file with another user, he makes E and k available to the other user. Compare the above scheme for protecting files with a protection scheme using an access control list, on the basis of ease of granting access privileges to users or withdrawing them, and i) ii) granting different kinds of access privileges to the same file.

baten A file is encrypted by using an encryption function E and a key k. No other protection checks are made by the file system. If the user wishes to share the file with another user, he makes E and k available to the other user. Compare the above scheme for protecting files with a protection scheme using an access control list, on the basis of ease of granting access privileges to users or withdrawing them, and i) ii) granting different kinds of access privileges to the same file.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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