Best way to tell if two files are the same?

Question

If I transfer a file over the internet from computer A to computer B using C# using one of the many ways to do file transfers with .NET, What is the best way to tell if the file on computer A and computer B is the same?

I am thinking that MD5 hashes would be a good way to tell. It seems like that is a widely accepted way to tell. However, I am just double checking to see if there is not a better way out there hidden in the .NET framework.

Thank you Tony

Answer 1

MD5 is the way to go.

Answer 2

CRC32 or Adler32, which are a lot faster then MD5. You should use MD5 if you need to check if file was manipulated with malicious intent. If there is no need to, than it's overkill.