From 3th to 7th of April Italians and French studends made some Workshop coding activity about safety communication.

The goal have been in fact to understand how data between two Arduino cards [Team A & Team B] can be intercepting by an another programable unit [Team C]. This strategy is called Snifing.

After hacking ciphered message they managed a Cesar disk to decipher it.

 

Team B have received  the message "Bertolucci School" from team A.

Next you can see a screenshot from the Arduino software. It allows you to read each character which were echanged between Team A and Team B.

But unfortunaly the team C spied this communication and have read this cipher message :

As you can see "Bertolucci School" have become "Cfsupmvddj!tdippm" on the last line of the screenshot.

It is about a simple gap of one letter in the alphabet. 

B => C

e => f

r => s

t => u

and the same until the end of the message...

Thanks to the Cesar disk to decipher this commnucation.