HashCheck can process and verify the hashes/checksums stored in checksum files--these are files with a .sfv, .md4, .md5, or .sha1 file extension. Just double-click on the checksum file, and HashCheck will check the actual checksums of the listed files against those specified in the checksum file. HashCheck will add a "File Hashes" tab to the Explorer file properties dialog so that you could easily check the hash of a file (or even multiple files and directories) from Explorer. You can also save the results to a checksum file. If you want to create a checksum file but think that opening the file properties dialog, navigating to the "File Hashes" tab and then clicking "Save" is too much trouble, HashCheck simplifies the task by adding an optional "Create Checksum File" command to Explorer's context menu. Simply select the files and directories that you want to hash and create a checksum file for, right-click on them, and select "Create Checksum File".