title: Is CRC32 really so bad for file integrity check?
body: <p>Of course that MD5 is better then CRC32, SHA1 is better then MD5 and so on... But also they are also much slower then CRC32.</p>
  
  <p>Right know, I am thinking about how to check consistency of being transfered file and CRC32 is fastest option.</p>
  
  <p>I haven't found anywhere <strong>how bad is CRC32 for integrity checks</strong> (maybe in other words how is probably that CRC32 will not detect malformed file)?</p>