Determining the encryption used

From: John Madden (chiwawa999@yahoo.com)
Date: Thu May 11 2006 - 13:20:10 EDT


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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