home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.hp48
- Path: sparky!uunet!spool.mu.edu!uwm.edu!zazen!doug.cae.wisc.edu!kolstad
- From: kolstad@cae.wisc.edu (Joel Kolstad)
- Subject: Re: VCR Plus codes...
- Organization: U of Wisconsin-Madison College of Engineering
- Date: 25 Dec 92 10:58:13 CST
- Message-ID: <1992Dec25.105813.8018@doug.cae.wisc.edu>
- References: <James_Cook.0k0l@nesbbx.rain.COM>
- Lines: 23
-
- In article <James_Cook.0k0l@nesbbx.rain.COM> James_Cook@nesbbx.rain.COM (**) writes:
- >
- >Regarding the VCR Plus codes:
- >
- >How are these numbers encoded? I spent an hour or so looking them over
- >and it is not readily apparent to me how these numbers work.
-
- Gemstar specifically made it non-obvious so that would-be hackers would
- have a difficult time figuring it out. If the code were obvious, Gemstar
- couldn't charge all the TV guides $$$ so that the guides can print the
- codes. Gemstar had also recently begun licensing the encryption method to
- VCR manufacturers, so you don't even need to buy the special remote.
-
- I think this is an interesting ploy of Gemstar's: They make money off of
- offering a simply time/duration encoding system. For the intended purpose, ANSI
- (or some other standards organization) could have come up with a publically
- distributable system that would have worked just as well. Of course, the
- government isn't very good at doing things like this, so I suppose that
- Gemstar deserves some money for pushing the concept into the marketplace.
-
- Sci.crypt is the place where this has been discussed at length.
-
- ---Joel Kolstad
-