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Path: utzoo!watmath!clyde!akgua!mcnc!ecsvax!bet
From: bet@ecsvax.UUCP
Newsgroups: net.micro.cbm
Subject: Re: protecting software -- dongles
Message-ID: <2450@ecsvax.UUCP>
Date: Mon, 7-May-84 18:31:26 EDT
Article-I.D.: ecsvax.2450
Posted: Mon May  7 18:31:26 1984
Date-Received: Wed, 9-May-84 01:11:17 EDT
Lines: 10

A recent message mentioned that a good, hard-to-copy dongle would need
to be more complicated than a simple resistor or two, with some logic
inside that responds to a prompt from the computer. Also, its was mentioned
that the more complicated the logic, the harder to "decipher". There has
been a discussion recently in net.ai about the general problem of figuring
out what is on the inside of a box, based only on looking at the inputs and
outputs, which is complicated by the possibility of internal memory.
Interested readers might look there.
				Bennett Todd
				...{decvax,ihnp4,akgua}!mcnc!ecsvax!bet