title: Retrieving ReFS integrity stream checksums
body: <p>Is it possible to retrieve the checksums/hashes that ReFS creates for integrity streams? I found <a href="https://www.microsoft.com/en-us/download/details.aspx?id=29043" rel="nofollow">this</a> document which describes a new API control code: <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/hh965606%28v=vs.85%29.aspx" rel="nofollow">FSCTL_GET_INTEGRITY_INFORMATION</a>, but it seems to only get some details about the integrity stream like checksum type and chunk size, not the checksums themselves.</p>
  
  <p>I'm interested in this information because I'm writing a program that needs to identify file change more robustly than just file-name and time-stamp, and I'd hate to re-do all the checksumming that the filesystem is already doing, especially since I'm working with terabytes of data.</p>