Messages in this thread | | | Date | Tue, 27 Jul 2004 03:53:09 -0500 | From | Matt Mackall <> | Subject | Re: [PATCH] Delete cryptoloop |
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On Tue, Jul 27, 2004 at 01:40:47AM -0700, Junio C Hamano wrote: > >>>>> "MM" == Matt Mackall <mpm@selenic.com> writes: > > MM> Here's a scenario: corrupt government agency secretly watermarks > MM> incriminating documents. Brave whistleblower puts them on his laptop's > MM> cryptoloop fs, but gets taken aside by customs agents on his way out > MM> of the country. Agents check his disk for evidence of the watermark > MM> and find enough evidence... > > Jari's exploit uses the property that his watermarks are > encrypted to identical ciphertext blocks, but does it mean that > the technique can be used to prove that identical ciphertext are > from the watermarks and not coming from mere coincidence?
Probably. Or maybe just enough evidence to pull out the electrodes or equivalent.
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