State-of-the-art end-to-end encryption (powered by the open source Signal Protocol) keeps your conversations secure. We can't read your messages or listen to your calls, and no one else …

You can confirm that the server is operating correctly and that you are communicating with the right person using safety numbers. The complete source code for the Signal clients and the …

Nov 16, 2023 · Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private communication, protecting the …

Jul 29, 2014 · Under the hood, it uses ZRTP, a well-tested protocol for secure voice communication. Signal was designed specifically for mobile devices, using a jitter buffer tuned …

May 21, 2025 · At Signal, our goal is to build a reliable, secure, and private communication experience that is broadly accessible and simple to use. From the beginning, we’ve designed …

Signal messages and calls cannot be accessed by us or other third parties because they are always end-to-end encrypted, private, and secure. Did you mean to view:

Nov 4, 2016 · Alice wants to send Bob some initial data using encryption, and also establish a shared secret key which may be used for bidirectional communication. Bob wants to allow …

Join an organization that empowers users by making private communication simple.

Jan 11, 2018 · In collaboration with Signal, Microsoft is introducing a Private Conversations feature in Skype, powered by Signal Protocol. At Signal, our goal is to make private …

All Signal-to-Signal communication is private and end-to-end encrypted. Signal-to-Signal messages are secure and free to send and receive using any internet connection enabled on …