The CRYPT extension uses a popular messenger called WhatsApp in its files. CRYPT files are used to store a backup of both incoming and outgoing messages. It is an encrypted format. Such a copy of the message database is usually named msgstore.db.crypt. To decrypt the file, you need the login and password of the Google account with which the application was installed.

CRYPT files are also supported by Whatsapp Xtract which allows them to be decrypted and converted to HTML.