rar
What is a .rar file?
application/vnd.rar
RAR is a proprietary archive format with several on-disk generations, solid compression, optional recovery records, encryption, split volumes, and Unicode names. Readers identify its signature and version before walking headers and compressed data; support for one generation does not guarantee support for another.
How to use a .rar file
Use a small example .rar file to test signature and version detection, member listing, Unicode names, safe paths, bounded extraction, clear unsupported-method errors, and semantic comparison with a committed member manifest.