Uses for HashOnClick
There are many reasons why you may wish to find out the hash value of a file. Many web sites for example list the MD5 value of a file, so that when you download it you can check to see if the file on your computer is correct. Some FTP servers also let you retrieve the MD5 value of a file (via the XMD5 FTP extension).
CRC32 values are used in Zip files, and some FTP servers also let you retrieve the CRC32 value of a file (via the XCRC FTP extension).
Another example of using HashOnClick is when you've copied a file from one location to another, and wish to confirm the files are identical. HashOnClick provides you with SHA-1 Hash values so that you can make absolutely certain the file is an exact match in both locations.