Skype adds Private Conversations with end-to-end encryption
Jan 12 2018
Skype is said to use open-source Signal Protocol to implement the encryption, which is set up so that only the devices sending and receiving communications in a conversation can hear or view the message.
Microsoft and Signal have teamed up to make Skype conversations as private as possible.
It is available for anyone running the Skype Insider Beta build with build number 126.96.36.199 on Mac, Windows, Linux, Android, and iOS. You can only participate in a private conversation from a single device at a time.
Skype is the latest messaging service to jump onto the end-to-end encryption bandwagon. Full encryption covers audio messages, text chat and files but is not implemented for standard audio and video calling. The Microsoft-owned service has partnered up with Signal in order to enable the new functionality, which is optional and not default for every chat.
Not all chats will be private with the option only available if you choose the recently added "New Private Conversation" option when you start a new chat. An invite will be sent to the contact that the user wants to have a Private Conversation with. WhatsApp users have complete encryption and don't have to enter any special feature or "Private Conversation" to get that added layer of security.
As for Skype Insiders, you can start a Private Conversation by tapping the "+" icon, then selecting "New Private Conversation". Crucially, it is only, for now, going out in a limited release to Skype Insider testers. The conversation can be switched to any device being used at the time but the messages sent and received will be tied to the device being used at the time. What would happen if you forget to enter "Private Conversations"?