The last two digits are the check-digits. This is likely to be some kind of really old method from the 1980s or an in-house scheme cooked up around that time. It was generated on an IBM 3270 but I ...

Generating checksums—cryptographic hashes such as MD5 or SHA-256 functions for files is hardly anything new and one of the most efficient means to ascertain the integrity of a file, or to check if two ...

Developers often post checksums or hashes alongside the download links for their projects to facilitate this kind of verification. Broadly, a checksum is the result of a mathematical calculation run ...