Microsoft claims cooperation with developer of Signal Open Whisper Systems, whose goal - implementation in Skype end-to-end encryption for confidential conversations and correspondence.
How it works
The new feature is called Skype Private Conversations and It is intended for encryption of voice calls, messages and forwarded files. Encryption is performed from Signal with open source, which is also used in WhatsApp, Google, Facebook, and instant messenger Signal.
In order to activate the encryption function, you must send a request to your interlocutor and wait for his consent. The there is the turn of the current conversation in confidential it turns out, like transfer it from one device per other. The there is if on smartphone already included the function of Skype Private Conversations, but you want to go to the tablet - the interlocutor needs to send a second request.
While the Skype Private Conversations function works only in test mode. Try it out You can install Skype Insider 184.108.40.206 for Android, iOS, Linux, Mac and Windows.
Source: Windows Central
Read in Russian: Skype тестирует функцию зашифрованных звонков