Apps / VltraSec | Encrypted Chat & File Transfer
VltraSec | Encrypted Chat & File Transfer
LCTR · Security
Private chat between two PCs.
Try it free for 1 day in the Microsoft Store, then buy once for 1.99 USD.
US price. The Store shows the price for your country.
Alice and Bob chat on two PCs, encrypted end to end 
One line to start: -s for the server, -c for the client
Description
Chat and send files with end-to-end encryption, AES-256 and two Diffie-Hellman key exchanges. No account and no chat history.
For two people who want a private line between their PCs without a service in the middle: no sign-up, no server of ours, no history.
It runs in a console window, not a graphical one, and both people need it. You connect directly by IP address, so the other person sees your IP, as in any direct connection. Read the privacy page for details.
Features
- Chat in real time between two PCs, with a name for each side.
- Send any file with /send and a path. It travels encrypted and is saved on the other PC.
- Builds the session key with two Diffie-Hellman exchanges over an 8192-bit group. The second exchange travels encrypted with the key from the first.
- Encrypts messages and files with AES-256, with a new random IV for each message.
- Connects directly by IP and port, on your own network or through a port you forward.
- Run it with no options and it asks for each setting, or start it with one line. Add -v to see the key exchange steps.
- How to start: on the first PC run vltrasec -s -p 8080 -u Alice. On the second PC run vltrasec -c -H 192.168.1.10 -p 8080 -u Bob. Then wait for both key exchanges and type.
- No sign-up and no chat history. The key lives only in memory, so it is gone when you close the window.
Questions
Is it a subscription?
No. You pay once in the Microsoft Store and the app is yours, with updates.
Can I try it first?
Yes. The Store gives a free 1-day trial. If you keep it, it is a one-time purchase of 1.99 USD, no subscription.
Do I need an account?
No account and no sign-in. Only the Microsoft Store account you already use on Windows.
Does it work offline?
There is no server. Two PCs talk to each other, directly by IP address. Only encrypted data crosses the connection.
What do both PCs need?
It runs in a console window, not a graphical one, and both people need it. You connect directly by IP address, so the other person sees your IP, as in any direct connection. Read the privacy page for details.