Path: utzoo!attcan!uunet!kddlab!trl!rdmei!ptimtc!olivea!samsung!uakari.primate.wisc.edu!sdd.hp.com!ucsd!ucbvax!hplabs!hpda!hpcupt1!swh
From: swh@hpcupt1.cup.hp.com (Steve Harrold)
Newsgroups: comp.os.msdos.misc
Subject: Re: File protection in MS-DOS
Message-ID: <51060001@hpcupt1.cup.hp.com>
Date: 30 Nov 90 14:34:48 GMT
References: <3920@male.EBay.Sun.COM>
Organization: Hewlett Packard, Cupertino
Lines: 8

>>> To repeat: ANY SECURITY SYSTEM WHICH DOES NOT HAVE A PHYSICAL DEVICE
>>> UNDER PHYSICAL PROTECTION CANNOT PROVIDE REAL SECURITY. 
>>> --- Tom Roberts
----------
How would you classify schemes such as DES or the public key encryption
schemes.  Surely, given enough time they can be decoded, and by such time
it is assumed that the data is no longer useful.  But, given enough time
one can also remove the physical device without damage to the data.