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Signal is open-source while WhatsApp is proprietary. WhatsApp also uses the 2-part ratcheting developed in Aoxotle my understanding is, but they are not mutual

by vitno 12y ago

Signal is open-source while WhatsApp is proprietary. WhatsApp also uses the 2-part ratcheting developed in Aoxotle my understanding is, but they are not mutually compatable on-the-wire transport.

frabcus 12y ago
Only the Android version of WhatsApp has encryption, as far as I can tell. Also WhatsApp (i.e. Facebook) get the metadata still - who messaged who, and when.