Messagerie instantanée

https://signal.org/fr/

https://telegram.org/

Snapchat, Snapchat

Wickr, Wickr

WhatsApp, WhatsApp, la page Sécurité sur WhatsApp contient un lien vers le PDF détaillant la cryptographie mise en œuvre (Signe avec Curve25519 et chiffre avec An 80-byte value that is used to encrypt message contents. 32 bytes are used for an AES-256 key, 32 bytes for a HMAC-SHA256 key, and 16 bytes for an IV.). Note: In cases where a business user delegates operation of their Business API client to a vendor, that vendor will have access to their private keys - including if that vendor is Facebook. However, these private keys will still not be stored on the WhatsApp chat server . See below for details