Date: Tue, 21 Jun 2005 22:13:14 -0700 From: Jacob Meuser <jakemsr@jakemsr.com> To: freebsd-multimedia@freebsd.org Subject: Re: tamper proofing audio Message-ID: <20050622051314.GB23165@puff.jakemsr.gom> In-Reply-To: <20050622141220.2cabee63@bofh.spyderweb.com.au> References: <20050622141220.2cabee63@bofh.spyderweb.com.au>
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On Wed, Jun 22, 2005 at 02:12:20PM +0930, Tim Aslat wrote: > Hi All, > > can anyone tell me if it's possible to tamper-proof an audio recording > in such a way that it can still be played on a normal audio CD player? > > I'm not worried about the recording being copied, but I am worried > about it being modified and want to guard against it. Its for a voice > recorder project in a lawyers office where they want to be able to > prove conclusively that a certain audio recording was made on a > specific machine and hasn't been tampered with. I understand that it > is impossible to make anything completely tamper-proof, but I would > like to make it at least difficult for someone to do without some very > substantial resources and skills available to them. Simply verifying the files with checksums (multiple algorithms to lessen the possibility of "collision attacks") is insufficient? -- <jakemsr@jakemsr.com> > The recording unit is a standalone PC running FreeBSD 5.4-RELEASE, and > it would be nice not to have to change that. > > Please contact me off-list with details. > > Cheers > > Tim > > > -- > Tim Aslat <tim@spyderweb.com.au> > Spyderweb Consulting > http://www.spyderweb.com.au > Phone: +61 8 84193434 > Mobile: +61 0401088479 > _______________________________________________ > freebsd-multimedia@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-multimedia > To unsubscribe, send any mail to "freebsd-multimedia-unsubscribe@freebsd.org"
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