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Old 05-31-2005, 03:23 PM
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MD5 has been crackable for years. The thing is that it was almost impossible to reverse engineer the MD5 (I.E. Look at the MD5 string and say "Okay, this couple of letters is 'A'". Every MD5 hash is 32 characters long, no matter how long the original input was. An MD5 hash is the by-product of a complex mathmatical sequence.

MD5 has been concievable crackable for years by simply ("or not so simply") bruteforcing the hash by encrypting random strings into MD5 and then comparing them to the hash given. Brute-forcings take a long time however.

It would seem that recently, as Egitto pointed out, that a couple of chineese guys recenltly 'solved' the MD5 hashing system quite analytically. They proved that two different strings can have the same MD5 hash.

Wikipedia Article on MD5
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