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Network Security Pen-Test
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Re: Determining the encryption used

Subject: Re: Determining the encryption used
Date: Thu, 11 May 2006 18:34:57 -0300
Hi John,


Please let me know the evolutions of your research.
IMHO you may use Truecrypt (www.truecrypt.org), to study many algorithms
and hashes.

Regards,
-- 
Rodrigo Ramos
81 87273524
81 34631593
www.triforsec.com.br
www.defenselayer.com



On Thu, 2006-05-11 at 10:20 -0700, John Madden wrote:
Hi,

While doing a pen-test I came across a database with
encrypted fields and I was curious to try and see what
I would do with it.

Is it possible to determine the encryption used by
"looking" at the encrypted results or lenght ?

I know that with Base64 it's pretty easy because of
the "==" at the end.

I would like to learn more about the subject and
considering the amount of documentation out there, I
would like your comments on what you have used and
found usefull. 

Also if there are any tools besides openssl that you
found usefull to try all the cipher, consecutively
with a passphrase/keyword against a file/string

Thank you for your time.




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