Encrypted database file created by WhatsApp Messenger, a smartphone messenger application; contains a database of past chat messages located on the SD card of the Android device running the program.

The crypt5 extension is appended to the .DB file used by WhatsApp to secure users' message databases on Android devices. The application uses a different algorithm to encrypt the DB file depending on the version of the application. The extension appended to the DB file, such as "crypt6" or "crypt7", signifies the algorithm. NOTE: You can use Whatsapp Crypt-DB Converter to convert files with the CRYPT5 and CRYPT7 encoded database files.