In January 2018, Microsoft announced that it would add end-to-end encryption for all Skype users.
As of last week, it appears that the choice chat encryption is available to all Skype users using the latest version services.
Microsoft first began offering end-to-end encrypted private chats to Insiders in January. At the time, company executives had said that encryption would work for voice calls, text messages and video, using Open Whisper Systems' Signal Protocol industry standard.
During testAt the time, private chat only worked for one chat per device at a time. But this particular feature worked for all the platforms that the application is released on: Windows Desktop, iOS, Mac, Android and Linux.
To use Private Conversation, you must select it from the profile of the person you want to chat with. During the conversation, calls, messages and video transmissions/sound/videos are encrypted until the session ends.
Microsoft has reported that Skype has been encrypted for some time, noting that it uses AES 256 bit encryption.
But this is not the same as the end-to-end encryption mentioned above. End-to-end encryption means that not only is the communication channel secure, but the messages stored on the company's servers can only be read by those involved in the conversation.
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