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Decrypting MD5 Hash (RESOLVED)

 
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Reuben
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PostPosted: Sun Jul 20, 2008 9:55 pm    Post subject: Decrypting MD5 Hash (RESOLVED) Reply with quote

I know how to encrypt MD5 Hash, but I can't find any way to decrypt it. There is no key needed for MD5, so it would seem simple, but Google yeilds no results.

Last edited by Reuben on Mon Jul 21, 2008 12:24 pm; edited 1 time in total
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Localhost
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PostPosted: Sun Jul 20, 2008 10:01 pm    Post subject: Reply with quote

MD5 is a one way hash...

The only way to ¨decrypt¨ (using quotes, because decrypting is impossible) is to use rainbow tables ( http://projectmd5.sciency.net ) or a cracker ( cain&able)

Cracking takes a while....

Rainbow Tables might not give you the hash.

======

MD5 was made/used in passwords verification... When someone registers, there password is encrypted into md5 ( md5(password) ) and stored in the database. Then if someone cracks the database, they only have the md5 hash and not the password.

So they cant do anything with it Smile

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STN
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PostPosted: Sun Jul 20, 2008 10:24 pm    Post subject: Reply with quote

the key is password, if you know it, dang you decrypted the hash Razz
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Localhost
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PostPosted: Sun Jul 20, 2008 10:29 pm    Post subject: Reply with quote

You dont need a key or anything... It is a one way hash and is made not to be decrypted.
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Typhoon808
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PostPosted: Mon Jul 21, 2008 3:45 am    Post subject: Reply with quote

You could try an online cracker such as gdataonline or try and make your own using wordlists (read each line in the list, convert it to MD5 and see if it matches the MD5 string you have).
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Reuben
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PostPosted: Mon Jul 21, 2008 11:21 am    Post subject: Reply with quote

It must be decryptable... how on earth would one make a code that could not be deciphered by repeating the cipher steps backwards?
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oib111
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PostPosted: Mon Jul 21, 2008 12:09 pm    Post subject: Reply with quote

It's not decryptable. Just do what Typhoon808 said.
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Reuben
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PostPosted: Mon Jul 21, 2008 12:23 pm    Post subject: Reply with quote

Well, gdataonline worked fine. Thanks.
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Localhost
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PostPosted: Mon Jul 21, 2008 4:25 pm    Post subject: Reply with quote

It most likely can be decipher... but the cipher isnt like 4 + x = output....
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