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It does not seem so according to their whitepaper, which I downloaded today. Unless this is out of date. They also describe the prekey mechanism used in Signal,
by zahllos 8y ago
It does not seem so according to their whitepaper, which I downloaded today. Unless this is out of date. They also describe the prekey mechanism used in Signal, WhatsApp, Wire etc as experimental and unreliable, which is an interesting assertion to make given the success of the protocol underpinning these clients.
- iforgotpassword 8y agoNot that I know enough about crypro to make an authoritative statement but generally speaking, more often than not, if something's successful it primarily means it's accessible and easy to use, rather than being robust and secure. (That is not to say that that's mutually exclusive.)
- zahllos 8y agoI don't quite understand what you're replying to. The experimental and unreliable scheme they describe is used by WhatsApp, who have probably an order of magnitude or two more daily users. I'm not saying threema is unsuccessful. I am saying their justification for not providing end-to-end forward secrecy isn't really valid.