Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!wuarchive!usc!apple!limbo!taylor
From: taylor@limbo.Intuitive.Com (Dave Taylor)
Newsgroups: comp.sys.mac
Subject: Re: Mac Folder-level Security
Message-ID: <736@limbo.Intuitive.Com>
Date: 4 May 90 07:09:35 GMT
References: <29411@ut-emx.UUCP>
Reply-To: taylor@limbo.Intuitive.Com (Dave Taylor)
Organization: Intuitive Systems, Mountain View, CA: +1 (415) 966-1151
Lines: 71

Kenneth A. Klingensmith asks about folder level security on a Mac...

Well, there are actually quite a few different programs that will
accomplish what you ask, and what is best depends on your specific
needs, your willingness to have it intrude on your (and others)
work, and how fanatically you want to secure things.

Some examples are: 

	DiskLock, from Fifth Generation Systems

		Offers protection and encoding for files, folders, or
		entire hard disks.  Includes virus protection.
			Call 'em at  (504) 291-7221

	SUM II, from Symantec

		While aimed at a different market, it does offer
		file encryption too.
			Call 'em at  (800) 228-4122

	StuffIt, from Alladin Systems / shareware

		The essential mac application, the new deluxe version
		also appears to offer file encryption too.
			Call 'em at  (408) 685-9175

	MacTools Deluxe, from Central Point Software

		Direct competitor to SUM II, this programs also indicates
		that file encryption/decryption is controllable by a
		simple DA (supplied).
			Call 'em at (503) 690-8090

	MacPassword, on disk #2128 from EDUCORP

		appears to offer file level protection as an INIT,
		though it seems more likely they mean complete system
		level protection.
			Call 'em at (800) 843-9497

	AME, from Cassady & Greene

		Not sure if it's released or not, but it's supposed
		to be a top-notch complete security layer for MacOS.

	Mac Safe II, NightWatch and QuickLock, from Kent Marsh

	FileGuard Extend, from ASD Software

I'm sure that there are more products and applications that accomplish
what you're asking for (bewilderingly enough, eh?).  Further, I'm sure
that there are some shareware or freeware apps that can easily and
reversibly encrypt a specific file.

In fact, it seems like a pretty straightforward problem; from a DA you
reach into the file and encrypt it, including an encryption of the 
original creator and owner.  Replace them with one for the decryption
program, and then double clicking on the file icon would launch the
decrypter to work on it, then that could transfer to the real owner of
the file.  Perhaps it could even be cobbled to regain ownership of the
file after app execution and re-encrypt it automatically with the same
key...

Anyway, I hope that the information above is helpful.  Good luck.

						-- Dave Taylor
Intuitive Systems
Mountain View, California

taylor@limbo.intuitive.com    or   {uunet!}{decwrl,apple}!limbo!taylor