[tahoe-dev] proposal: add padding

Iraklis . leontiad at gmail.com
Thu Jul 11 17:44:16 UTC 2013


Hello!
Yes you are right. For some reason i was thinking only random bytes for 
padding.

Regards,

Iraklis
On 07/10/2013 04:06 PM, Zooko O'Whielacronx wrote:
> On Tue, Jul 9, 2013 at 9:53 AM, Iraklis . <leontiad at gmail.com> wrote:
>> That would destroy any dedup service if different random bytes are appended. Even if the same number of random bytes are appended for equivalent encryption keys. Or i am missing sth?
> Hello, Iraklis! Good to hear from you.
>
> Let's make all pad bytes be "0" before encryption. They will be
> encrypted along with the file bytes.
>
> Therefore, as long as the same number of padding bytes are appended
> whenever the encryption key is the same, then the dedup (convergent
> encryption) property is preserved.
>
> Right?
>
> Regards,
>
> Zooko
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