This is a freeware Windows Explorer extension. It installs itself into the file context menu, adding two new items: Get Sign, Check for Sign. Crypto Helper can generate and verify MD5, SHA1 and CRC32 signatures. This can be useful for checking the integrity of a downloaded file, for backup and virus protection. If some hash does not match it's original - then the file was modified somehow. Crypto Helper is always ready at a click of a button.
Free download