WhatsApp backup conversation files are now saved with the .crypt8 extension. This means that WhatsApp has once again changed (do they ever stop??!!) the encryption algorithm used to generate the chat history message backups that are saved on the SD card.
WhatsApp has once again changed the algorithm to encrypt all the chat history messages saved on the SD card. This new encryption method is denoted by the .crypt7 filename extension.
A couple of weeks back, WhatsApp introduced a new way of encrypting the backup messages saved on the SD card. The article that I wrote last month on decrypting the WhatsApp messages will no longer work on the new crypt5 files.
WhatsApp does a backup of the messages at 4am (local time) every day to the SD card. On Android, this backup is an encrypted copy of the SQLite database containing all of the WhatsApp messages. If you want to read the messages on a computer, you will need to decrypt the file.
