RAR (Roshal Archive) files store compressed data and are created and unpacked using WinRAR (among other other programs designed to do the same thing). RAR files can be password protected using Advanced Encryption Standard (AES) encryption, making the passwords very difficult to crack. RAR password crackers have popped up on the Internet, and some are available for free download. However, most of these RAR password crackers do not try to break the code and rather work more like a very thorough version of trial and error, so they can take some time. Writer Bio