[flud-devel] DHT Performance? Design?
alenlpeacock at gmail.com
Mon Oct 29 22:31:23 PDT 2007
On Oct 29, 2007 11:22 PM, Alen Peacock <alenlpeacock at gmail.com> wrote:
> Note that for the truly paranoid, pre-sK encryption would also be
> desirable for non-personal files. E.g., backing up a copy of my
> iTunes library might allow Apple or the RIAA to discover that I've
> made "illicit" copies of these files into the backup cloud.
Actually, pre-sK encryption is really only needed for non-personal
files. For personal files, the convergent-encryption key is virtually
Quick example: the file "feist-1234.mp3" downloaded for Amazon MP3
has a known sha256 value, which anyone in possession of that file can
compute. So if I store this file to a public network, using the hash
value as the encryption key, anyone who has a copy of the file can
determine exactly what it is.
otoh, only I will be able to compute the sha256 hash of the file
"personal-musings-about-monkeys-and-guitars_AlenOct2007.txt", so if I
encrypt this file with that hash and upload it, it would be completely
opaque to all other users.
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