TextSecure is a messaging app for simple private communication with friends.

TextSecure uses your phone's data connection (WiFi/3G/4G) to communicate securely, optionally supports plain SMS/MMS to function as a unified messenger, and can also encrypt the stored messages on your phone.

This version - TextSecureSMP - has been build to incorporate the Socialist Millionaires' Protocol from the OTRv3 protocol into the application to allow for a better authentication mechanism.

THIS IS NOT PRODUCTION CODE YET - THUS PROCEED WITH CAUTION!!!

Looking for the original documentation? Check out their wiki!

https://github.com/WhisperSystems/TextSecure/wiki

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

Copyright 2011 Whisper Systems

Copyright 2013-2014 Open Whisper Systems

Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html