#7361
When transferring files between computers or over the Internet, it is often necessary to verify their integrity by utilizing a diverse array of supported algorithms to calculate and compare the file checksum, so as to ensure that the files received are identical to the originals.

#5844
As we all know, the integrity of a file can be quickly determined by checking its hash value (i.e.: find out whether two files have identical content or not). There are many file hash checking tools out there, even Windows PowerShell can compute hashes of files directly, but most of them are designed for a single file.

#310
If you don't understand what is the hash value of a file, then, i don't think you have to study this application, because maybe you do not need to use it or even know it at all.