[59321] in cryptography@c2.net mail archive
Re: Can you keep a secret? This encrypted drive can...
daemon@ATHENA.MIT.EDU (Alexander Klimov)
Fri Nov 3 12:57:56 2006
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Date: Thu, 2 Nov 2006 18:40:27 +0200 (IST)
From: Alexander Klimov <alserkli@inbox.ru>
To: cryptography@metzdowd.com
In-Reply-To: <addede3b0611011910r1adfcfcerde039d21e5454dc3@mail.gmail.com>
On Wed, 1 Nov 2006, Saqib Ali wrote:
> Well for one thing, any software based FDE is extremely slow, doubles
> the file access times, and is a serious drain on the laptop battery.
If a PC is used by an interactive user, it is irrelevant how much
access time is increased, as far as the user cannot see a difference
without a timer. Several times I have read that disk encryption is not
noticeable. My own experience shows that I cannot notice any
difference: emacs and pine respond immediately to every key-press if I
use encrypted disk or not; firefox waits for data from network the
same amount of time; mplayer does not drop frames with or without disk
encryption; compilation of kernel takes some noticeable time with or
without encryption, but I don't know how much exactly since I spend
this time in some other program.
I don't want to say that the difference is irrelevant for all uses,
e.g., if one edits video with 2k resolution or hosts a busy database,
they can see very real difference, but such use-cases are minority and
they are not done on portable computers anyway.
I guess many people here have tried full disk encryption for
themselves, do you notice any difference in performance or not?
--
Regards,
ASK
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