Date: Wed, 14 Jan 2015 05:30:51 +0200 From: Kimmo Paasiala <kpaasial@gmail.com> To: Rozhuk.IM@gmail.com Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org>, freebsd-geom@freebsd.org, Adam Nowacki <nowakpl@platinum.linux.pl> Subject: Re: ChaCha8/12/20 and GEOM ELI tests Message-ID: <CA%2B7WWSf%2B7N6foTKxarANfwgAitQXfxt%2B_e-HgcokzU5cVparAA@mail.gmail.com> In-Reply-To: <CA%2B7WWScVQ9LwQQ3NR8ipkdxroqdg26Q2dB__%2B2wRr_0kPmJODQ@mail.gmail.com> References: <54b33bfa.e31b980a.3e5d.ffffc823@mx.google.com> <54B4AE55.9090205@platinum.linux.pl> <54b5d299.4914980a.61cd.43a6@mx.google.com> <CA%2B7WWScVQ9LwQQ3NR8ipkdxroqdg26Q2dB__%2B2wRr_0kPmJODQ@mail.gmail.com>
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On Wed, Jan 14, 2015 at 5:21 AM, Kimmo Paasiala <kpaasial@gmail.com> wrote: >> Depends on the capabilities of the attacker. >> >> To be able to continuously read encrypted sectors for data collection is too much. >> > > When talking about disk encryption the first assumption is that the > attacker always has this capability, even with so much power the > attacker shouldn't be able to break the encryption scheme. If he can > then the encryption scheme is not secure. > > -Kimmo Sorry pressed sent too fast. The last sentence should have been: Ift the attacker can learn anything about the unencrypted data or predict something about future encrypted or unencrypted blocks by analyzing the previous encrypted blocks the encryption scheme should be considered insecure. -Kimmo
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