End-to-end encrypted payloads
Chat messages and file contents are encrypted between paired clients. The relay moves encrypted traffic and is not designed to read message or file contents.
Windows public beta
Secure Pair Transfer
Private chat and encrypted file transfer for two people who already trust each other. Pair once, keep the contact saved, and drag files into the conversation when you need to move something securely.
Built around direct trusted pairs.
Secure Pair is designed for one person to invite another specific person, then keep that saved connection available for future chats and transfers.
Guest-friendly pairing
A licensed user can invite a trusted contact. That contact can keep reconnecting to the inviter, while inviting additional contacts requires their own license.
Peer-to-peer first
When both paired computers can reach each other locally, file contents stream directly between them. If the network blocks that path, Secure Pair falls back to encrypted relay streaming.
A familiar chat window for secure transfers.
The app keeps saved contacts on the left, conversation and transfer activity in the middle, and setup controls close by without making the normal flow feel technical.
- Saved contacts reconnect without creating a fresh invite each time.
- Drag and drop files into the conversation.
- In-app update checks keep beta testers on the latest build.
Public beta with automatic licenses.
New installs can start a 48-hour trial for one saved contact after creating or logging in to a Khuna Labs account. Paid beta licenses unlock invite creation and are issued automatically after checkout.
What to expect in beta
- The installer is code-signed by Khuna Labs. Windows SmartScreen may still show additional prompts while release reputation builds.
- Use Secure Pair only with people you trust and files you are allowed to send.
- New installs can start a 48-hour account-backed trial that can pair with one contact.
- Keep important files backed up outside the app before testing large transfers.
- Same-network transfers try direct peer-to-peer streaming first, with encrypted relay fallback when needed.
A beta license does not remove your responsibility for the files you send or receive. Do not use Secure Pair for illegal content, malware, harassment, or anything you do not have permission to transfer.
Download Secure Pair Transfer.
Install the latest public beta, start a 48-hour trial or activate with your beta key, then create or accept a pairing invite.