MD5 password decryption [duplicate]

This question already has answers here: 开发者_如何学运维 Closed 12 years ago.

Possible Duplicate:

Is it possible to decrypt md5 hashes?

Reversing an MD5 Hash

hi there is any way to decrypt md5 password field to allow user to edit password in form using javascript. or php.

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MD5 is one way hashing algorithm - not a means of encrypting. As such, there's no means of decrypting it - only checking to see if another source input has the same hash.

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No, there is no way, since hashing is not a reversible operation.

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Your question is not very clear, but recovery of the origional string for hashes can be done with rainbowtables: http://en.wikipedia.org/wiki/Rainbow_table

(if the hash was salted, this will become troublesome ofcourse)

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I wrote an app a few years back that brute-forces MD5 hashes against wordlists and previously-cracked MD5 hashes it finds via search engines, see if it comes up with anything for you:

http://bigtrapeze.com/md5/