SHA-512 is a type of checksum that we use to verify file integrity. If you're sharing a file with us, we will probably ask you for a SHA-512 checksum for your file, which we'll verify against our own copy of the file.
Here are some suggestions for generating the SHA-512 checksum for your file for different operating systems on the command line.
certUtil -hashfile pathToFile sha512
shasum -a 512 pathToFile