AES encryptor

AES encryptor, simple tool to encrypt files in folder. AES algorithm is freely available for any use, worldwide. Complete AES-related information is available on the AES home page. The encryptor and decryptor must be coded in pure C only. Encryption utility is small single executable, GUI-less, just run silently in the background and encrypt files. When launched it just encrypt all files older than 'n' day in specified directory or specific file types (*doc, *.pdf, etc) in that directory. The encryption parameters are specified (hardcoded) inside exe: path to directory and file types, "n" days, encryption key. To create executable, builder tool need be used where this parameters will be specified. For decryption need be created separate decryptor utility, where to specify folder to decrypt and encryption key.