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Article #268Re: MS-BASIC file security possible?
From: Bryan D. Nehl
Date: Sun, 06 Sep 1992 01:34
Date: Sun, 06 Sep 1992 01:34
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In <3302@carroll1.cc.edu> sandberg@carroll1.cc.edu (Brian R. Sandberg) writes: >I am writing an application in MS-BASIC V7.1 which uses random access data >files. Here's the problem: these files contain confidential information. >Is there a way to keep people from reading (accessing) these files? Someone else mentioned encrypting the data before saving it out to disk. This is a pretty good idea. Another thing that you might want to do that is fairly easy is to put at the beginning of the file ascii text like the following: Only Authorized Personnel may access this data file.^Z the ^Z would be a ctrl-Z. You could write a similar string in the header of your file in binary. This way if someone tried to simply TYPE out the file then all they get is your message. DOS will see the ^Z and stop. You might want to throw in a few or a LOT of ^G's depending on what your size constraints are and how annoying you want to be. Bryan. /* === Bryan Nehl ========== kodiak@Kodiakpc.Manhattan.KS.US =========+ [ USDA-ARS-NPA-WERU ][ bdn@chepil.weru.ksu.edu ] [ 913.532.6233 or 913.532.6495 ][ kodiak@matt.ksu.ksu.edu ] +_______________ ...!rutgers!matt.ksu.ksu.edu!kodiak _______________ */
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Path: arc1-ca.pugleaf.net!sparky!uunet!cis.ohio-state.edu!magnus.acs.ohio-state.edu!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!matt.ksu.ksu.edu!news From: kodiak@matt.ksu.ksu.edu (Bryan D. Nehl) Newsgroups: alt.msdos.programmer Subject: Re: MS-BASIC file security possible? Date: 5 Sep 1992 20:34:50 -0500 Organization: Kansas State University Lines: 22 Message-ID: <18bn7qINNnet@matt.ksu.ksu.edu> References: <3302@carroll1.cc.edu> NNTP-Posting-Host: matt.ksu.ksu.edu