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Project
Design
Benefits and Drawbacks of our Project Improvements, Applications And Related Work
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The Java implementation used in browsers restricts the applets to be run
inside a “sandbox”, i.e., the browser does not allow the applet to access
privileged resources, such as the file system, network, etc, due to obvious
security risk associates with these operations when performed by malicious
applets. Our client application requires both an access to user’s hard drive,
in order to store the received file, and the ability to open network connections
with other servers. Therefore the applet must request additional privileges. In
order to request these privileges, the applet must be digitally signed (in
Netscape), or the user must trust the applet (in Explorer). In Netscape browsers
(version 4.xx) it is possible to allow unsigned applets to request these
privileges as well. The side effect of this method is that the user is prompted with a dialog box
every time he runs the applet (unless he decides to permanently trust the
applet). In our project we use a test certificate issued by the Entrust demo server,
to digitally sign the applet. The certificate expires on Sep 13, 1999, and a new
certificate must be installed to run the applet after that date. |
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Please contact Genady or Nir regarding copyright issues
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