WhatsApp E2EE backups will be encrypted with a unique encryption key, which we can also protect with a password.
For years, the most popular instant messaging application in the world, WhatsApp, provides us with all its users end-to-end encryption of your messages, which has been questioned recently, so that these can only be seen by the sender and the receiver, but for no one else.
In addition, all WhatsApp users have the option of making a backup of our conversations through cloud-based services What Google drive or iCloud.
This backup is protected by the cloud storage services themselves, but now, Facebook just confirmed on his official blog for developers that WhatsApp is going to activate, finally, end-to-end encryption also in backups, which means that neither WhatsApp nor the provider of the cloud storage service, Google or Apple, will be able to access our backup copies or their encryption keys.
How End-to-End Encryption Backup Works
To enable end-to-end encryption (E2EE) backups, Facebook has developed a completely new system for encryption key storage that works on both iOS and Android and that is that the backups will be encrypted with a unique encryption key that will be randomly generated.
Users will be able to choose secure our encryption key manually or via password, in the latter case the key is stored in a Backup Key Vault that is built on a component called Hardware Security Module (HSM), a hardware specialized in safely storing encryption keys.
With this system, when we want to access our backup, we can do it using our personal password to retrieve our encryption key from the HSM-based Backup Key Vault and decrypt our backup.
The HSM-based Security Key Vault will make sure the key is permanently inaccessible after a limited number of unsuccessful attempts to access it, thus protecting us against brute force attempts to retrieve our key.
What’s more, WhatsApp will only know that a key exists in the HSM, but it will not know the key itself.
End-to-end encrypted backups will be available on iOS and Android over the next few weeks And from Andro4all we will keep you promptly informed of any news that occurs in this regard.
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