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  #41  
Old 12-29-2001, 04:23 PM
Jawelin Jawelin is offline
 
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YOU CAN'T REVERSE A DATA-LOSS ALGORITHM , even with +$250 !!!

Password aren't actually 'encrypted', but HASHED !

The MD5, along with RC4 or SHA1, are HASING algorithms, not cypher ones.... All of them are complex NLP (NON-LINEAR POLINOMIAL algos) which can't be reversed, as in the many steps most of data - beginning from a couple of random large (VERY large!) numbers - is lost ...
So you can't even interpolate an approximation with a Neural Network...

Only thing you can ensure is:
same word (any lenght) ---- > same hash (32 or 40 bytes, respectly MD5 or SHA1)

This way you can compare words (CASE SENSITIVE, of course, because 'a' and 'A' for a math- algo are 97 and 65!!!) without knowing them !!!

Bye

Hope this helps.
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  #42  
Old 12-29-2001, 04:29 PM
kaizen kaizen is offline
 
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Quote:
Originally posted by Codename49


Just out of curiosity to see if you can do it I created a username with a 3 character password.

Here's the md5 hash I got for it...
8aa11cd5807364a0fd04593d4b8ad56d
Unfortuunately, that exceeds 30 seconds which is my hosts time out.

If anyone has a server that doesnt timeout at 30 seconds i will have another go.
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  #43  
Old 12-30-2001, 08:35 PM
kaizen kaizen is offline
 
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Quote:
Originally posted by Codename49


Just out of curiosity to see if you can do it I created a username with a 3 character password.

Here's the md5 hash I got for it...
8aa11cd5807364a0fd04593d4b8ad56d
The hash is invalid or is not 3 characters long.

Try again.
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