November 21, 2013
Voice over IP (VoIP) has been around for a long time. It’s ubiquitous in homes, data centers and carrier networks. Despite this ubiquity, security is …
July 10, 2012
In my previous post I found that end-to-end encryption with OSTN is both effective and usable. There are two important things the user must be aware …
July 5, 2012
Introduction to OSTN The OSTN network stands for Open Source Telephony Network. It is a federated network standard for supporting Internet calling …
May 26, 2012
If you saw our last post about how to setup your own secure voice-over-IP server instance, then this news is for you. If you are an Android user …
May 17, 2012
The Open Secure Telephony Network is a standard that defines how to configure a VoIP softswitch with the capability to have secure two-way VoIP …
April 19, 2012
If you see me dancing or singing with my phone in my hand, I may not just be having a great time, but also creating an encryption key. Part of the …
March 22, 2012
What if you could call me directly through my email? No exchanging of phone numbers or searching for handles on Skype. Just plain and simple email. …
March 21, 2012
The Guardian Project develops open source software primarily for the Android platform but we strive for security by design to be a part of all …
February 22, 2012
This post is part of a series on our work researching the Open Secure Telephony Network. After you have CSipSimple installed on your mobile handset, …
February 22, 2012
The first step in the Open Secure Telephony Network (OSTN) is a client. We can’t make a phone call without a phone. In this case there are three …