[Box Backup] Box Backup on Rails - Part 2

Fry, Joseph boxbackup@fluffy.co.uk
Mon, 19 Mar 2007 16:49:12 -0400

> I just re-visited the webbased application we put together a=20
> short while ago.
> The application felt very slow. The reason for this we=20
> discovered was the ruby crypt library is a pure ruby=20
> implementation and therefore really slow.=20
> Also
> the "ezcrypt" libraries available which are a wrapper towards=20
> the OpenSSL API cannot be used since the "openssl" layer=20
> placed on top of the "raw" crypt routines imposes a lot of=20
> restrictions on key length etc and therefore cannot be used.
> Our solution was to create a small ".so" file which wraps the=20
> AES and Blowfish functions to be directly accessed from Ruby.=20
> This improved performance more than 100 times. If the ".so"=20
> file is not available it will fallback to the slow pure Ruby=20
> crypt library.
> Also, now files can be downloaded in the application=20
> interface. Only one file at a time can be downloaded=20
> currently. The file will be extracted on the web server and=20
> then be re-compressed using "zip" when sent to the client.

Ok... Forgive my confusion, I have been following the mailinglist for a =
while before I actually implement the software... So I haven't actually =
used BB yet

Anyway, I thought the files are encrypted before they are uploaded with =
BB.  If that is the case, then how is it possible to download them via a =
web interface and have them be readable?

I assume that is what all your talk about crypto API's was reguarding... =
But even if that is the case, where are the keys stored? On the =



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3/19/2007 11:49 AM