Bit Chat

Get a secure, peer-to-peer instant messenger

One messenger for Internet and LAN chat with end-to-end encryption

Version 4.6.3 (alpha)

Windows 10/8.1/8/7/Vista
(.NET Framework v4.0 required)
Ubuntu Linux
(Mono Framework required)
Quick Start
Read this blog post to know how to register for a profile certificate and get started with Bit Chat.
What's New?
Read this blog post to know what's new in this release.
Open Source
Source code available under GNU GPLv3 Licence on  GitHub
File Details
NameBitChatSetup.zip
FormatZIP File
Size850 KB
SHA1D4035FDD4D0BA588C2E387BDDC589D64DC43F893
SHA256EFCC93D466E676686DEA9F12B804DDCCDC089A20201F59AE05B520B23FAF0FBC
NameBitChatPortable.zip
FormatZIP File
Size464 KB
SHA12E3911186BEA2FF44CAC4EED0530BE6DEDF3DACF
SHA256D3F5B8108366BD39040AD2BE75FD35C2F4FC0600D662965320E45A9B59E000DE
NameBitChatPortable.tar.gz
FormatGZiped TAR Archive
Size452 KB
SHA1044942B49AB6B44D618EFB8D3D1D8FF93A539932
SHA25610085BD27C2D99D93EEC7B66524FF43ED578935BA9F33D9E233274CA0349C1AD
Technitium Bit Chat Screen Shot

Technitium Bit Chat is a secure, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger is to provide privacy which is achieved using strong cryptography. It can be used over Internet and private LAN networks for instant messaging and file transfer.

The architecture is designed keeping in mind the security principle that everybody is secure or no one is. There is no meta data generated when you use Bit Chat. The only thing that we know, is the email address of the user who registered for a digital certificate. The digital certificate tells that the email address was verified, which is similar to, in concept, to any domain validated SSL certificates issued to websites.

To know more, read this blog post.

Click here to read Frequently Asked Questions (FAQ).

Click here to read Bit Chat whitepaper.

Peer-to-Peer

  • Works similar to a bit-torrent client so, no servers involved!
  • No meta data is stored since even we don't know to whom you are chatting with.
  • Works as LAN chat just as it works on the Internet.
  • Can work in private LAN networks not connected to Internet.

Secure

  • Profile certificate signed with RSA-4096 and SHA-256 hash ensures identity of opposite peer.
  • Provides end-to-end encryption with Perfect Forward Secrecy (PFS) using DHE-2048 or ECDHE-256.
  • Protocol is secured with AES 256-bit encryption.
  • Open source code allows you to inspect the implementation.

Why Is Privacy Important?

Watch this episode of Last Week Tonight with John Oliver: Government Surveillance (HBO) in which John sits down with Edward Snowden to discuss the NSA, the balance between privacy and security, and dick-pics. You may wish to skip to 13:38 in the video to jump to the interview.

"Your rights matter because you never know when you're going to need them."
- Edward Snowden

Alpha Version

Technitium Bit Chat current release is in alpha version. This means the software is not fully complete and will undergo major changes in its protocol or user interface design. There may be noticable bugs which will be addressed with an automatic update. You are welcome to report any issues by sending an email to support@technitium.com

Read More

Read more on the original concept in this blog post.