Re: md5 encryption

simon said the following on 27/05/2005 20:04: 
Sorry, but that's not true.
As said, it is technically possible to get the original string but near
impossible to do so.

Well, whilst it's technically possible to get a string that hashes to the same
value (which is generally all you need if it's used as a password), this only
means it _might_ be the original string; it is completely impossible to
determine whether it actually _is_ the original string.

And all I was trying to do was to correct the statement that md5 was a one way hash.


It is one-way, in that it's a many-to-one mapping.

Start with a given string, it will always map to the same hash. Start with the hash, it could map to any one of an infinite number of strings.


--
Oli
.

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