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Re: [Cfrg] RGLC on draft-irtf-cfrg-chacha20-poly1305-01.txt

James Cloos <cloos@jhcloos.com> Tue, 07 October 2014 13:22 UTC

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From: James Cloos <cloos@jhcloos.com>
To: Nikos Mavrogiannopoulos <n.mavrogiannopoulos@gmail.com>
In-Reply-To: <CAJU7za+itdW8Orc5PiFvBq3k2fziewu=QpZL7aag69fZn5L_Xg@mail.gmail.com> (Nikos Mavrogiannopoulos's message of "Tue, 7 Oct 2014 11:57:13 +0200")
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Date: Tue, 07 Oct 2014 09:20:23 -0400
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Subject: Re: [Cfrg] RGLC on draft-irtf-cfrg-chacha20-poly1305-01.txt
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>>>>> "NM" == Nikos Mavrogiannopoulos <n.mavrogiannopoulos@gmail.com> writes:

NM> Would you really want to use an AEAD cipher for backup encryption in a
NM> single pass? I mean a single bit corruption in 128 Gigs and you lost
NM> everything as authentication would fail.

One should only loose the block which failed auth.

Ie, each block should be treated separately.

-JimC
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James Cloos <cloos@jhcloos.com>         OpenPGP: 0x997A9F17ED7DAEA6

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