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On Nov 16, 2007 8:10 AM, Neil Williams <linux@xxxxxxxxxxxxxx> wrote: > > On Fri, 16 Nov 2007 00:31:28 +0000 > "Michael Mortimore" <nospamformike@xxxxxxxxxxxxxx> wrote: > > > > You can actually provide DRM stuff using open source code without disclosing > > > how to circumvent it 'at the source code' level. Think GPG keys etc. But like > > > 'closed source' DRM its just not worth the effort. > > surely the program needs to decode the content and if you can modify > > the program (as would be the case with open source) you can send the > > output anywhere you want. > > You can already modify the source of gnupg in any way you like but you > won't be able to modify it such that you could decrypt a message > encrypted with the standard program, without the secret key. my point was that there's nothing to stop somebody with a valid key from making an unprotected copy and distributing it to people who don't. Unless the program is deliberately written to be unintelligable, surely modifying source is by far the easiest method of breaking DRM. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html