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Re: Cracking hashes with Python

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  Re: Cracking hashes with Python Laszlo Nagy <gandalf@shopzeus.com> - 2013-11-27 16:31 +0100

#60619 — Re: Cracking hashes with Python

On 2013-11-26 00:58, Marc wrote:
> Hashes, by definition, are not reversible mathematically.  The only way to
> figure out what they represent is to take plaintext that might be the
> plaintext based on anything you might know about the original plaintext
> (which is often nothing) and hash it; then see if the hash matches the one
> you have.  If it does, you have figured out the plaintext; if it doesn't try
> again.  For a tool that does this, look at Rainbow tables.
There are also complete hash databases on the internet. They usually 
reverse-map hash values to most common values found in dictionaries.

Here is an example:

 >>> import hashlib
 >>> h = hashlib.md5("test")
 >>> h.hexdigest()
'098f6bcd4621d373cade4e832627b4f6'
 >>>


Then you go here:

http://www.md5decrypter.co.uk/

There are many other databases like this, search for them with "md5 
search" or "sha1 database" etc.

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