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VOIDEX Messenger

VOIDEX Messenger is a private, end-to-end encrypted messenger with post-quantum key exchange, voice and video calls, groups, voice notes and media.

What VOIDEX Messenger is

VOIDEX Messenger is the private half of VOIDEX: one-to-one chats, group chats and voice and video calls between members. Every message, photo, video, voice note and call is end-to-end encrypted, so only the people in the conversation can read or hear it. VOIDEX itself cannot.

How VOIDEX encrypts messages

Direct messages use a hybrid post-quantum key exchange (X25519 together with ML-KEM-768) and a double ratchet, so every message has its own key. Groups and channels use MLS. The public keys of every device are published to a key transparency log that anyone can check, so a changed key cannot be slipped in quietly.

Each member holds a personal VOIDEX recovery code. It opens the member's message history on a new device. VOIDEX never holds that code, which is why VOIDEX cannot open anyone's history either.

What you can do in VOIDEX Messenger

Send text, photos, videos, GIFs, voice notes and files; react with emoji; reply to a message; edit a message you sent within 15 minutes; delete a message for everyone; choose whether screenshots are allowed in a chat; and call anyone in your contacts with voice or video.

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