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.
I have been looking for a tool to encrypt Ki values (into eKi) using AES encryption. Ki is a 128-bit value used in authenticating the SIMs on the mobile network.
