>Oh, and the same MD5 hash does not mean that there is a duplicate
>
>This has less (or no) collisions http://msdn.microsoft.com/en-us/library/system.security.cryptography.sha256(v=vs.110).aspx

I will take a look at this one.

>See table at the bottom here http://en.wikipedia.org/wiki/Cryptographic_hash_function

Thanks