tag:blogger.com,1999:blog-23730632263096664562011-11-27T17:02:56.198-08:00This is about Data-hiding techniques in everyday Communications.<BR> Applications vary from Secret Dating to Cheating on a Test to Espionage !! <BR> Communication can be between humans, computers, cell phone, radios, appliances, or whatever. Feel free to add. <BR> Nothing deeply technical is allowed :)<BR> Be simple, be innovative.Adel El-Atawynoreply@blogger.comBlogger61100tag:blogger.com,1999:blog-2373063226309666456.post-88723258951871218922007-09-19T20:38:00.000-07:002007-09-19T20:53:17.233-07:00

Well, everyone will say: Isn't that obvious? We can write whatever we want, and click "add comment" or "submit post".We are talking here about what you can do to send a different message than that in the text you write, other than the information clear in your post.An example (feel free to add comments for more data carriers):The exact hour:minute of posting your comment.Number of posts per

Adel El-Atawynoreply@blogger.com2tag:blogger.com,1999:blog-2373063226309666456.post-50762173215706329582007-09-01T16:53:00.000-07:002007-09-01T17:33:56.744-07:00

Of course, as usual, I am not talking about writing down the secrets in a message and sending it :)A simple sniffer program can be used to see everything you sent from another machine over the network (your dad can do this for example :) ) Or if you are connected over a wireless link at home or at work, this is clearly easy.I am thinking more of a normal behavior, that we can make, well, a little

Adel El-Atawynoreply@blogger.com2tag:blogger.com,1999:blog-2373063226309666456.post-42016144036354569142007-08-31T02:32:00.000-07:002007-08-31T02:35:52.194-07:00

This post is dedicated to collect others' opinion on this subject.Everyone finds an article about secret communication, hidden signals, cheating a test, etc. Please post it here. We want to know what others are doing, is this totally useless, or it can prove to be a huge issue that has been long neglected.Of course adding a link and a couple of lines explaining what are they doing will be more

Adel El-Atawynoreply@blogger.com1tag:blogger.com,1999:blog-2373063226309666456.post-57235238179256903142007-08-30T19:07:00.000-07:002007-08-30T19:31:36.439-07:00

Chatting during a Test !!! How is that possible?It is very simple. First, let's find out what can you do that will not bother the proctor, (or warden !!). Then, we will have to find how we can agree on the meaning of these signals in an easy way (if it is very hard, it could have been easier studying).An important note first. This is for proving to ourselves we can cheat if we want to, but we

Adel El-Atawynoreply@blogger.com0tag:blogger.com,1999:blog-2373063226309666456.post-42234853184750688822007-08-30T17:48:00.000-07:002007-08-30T18:12:22.560-07:00

We need first to identify what is our raw material? What can we use? What is our channel ?Formally: What is the communication channel, what is the capacity and bandwidth, and what are suitable codes to use?Well, actual formulation of the problem has been studied a long time ago. From the early starts, there has been the Morse Code, Nyquist and his work in telegraph capacity, etc. But we can go

Adel El-Atawynoreply@blogger.com0tag:blogger.com,1999:blog-2373063226309666456.post-2027037466405432262007-08-30T17:41:00.000-07:002007-08-30T18:39:43.055-07:00

As a start, this blog is mainly for investigating techniques where two parties can communicate over elementary communication channels without anyone noticing.A basic example: cheating in a test. How to do it without the proctor noticing? Of course, personally, I do not like that (being the 'proctor' in many cases :) ). But, this can have quite a high research value.Many techniques exist with

Adel El-Atawynoreply@blogger.com0