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Rolling code security for remote controls

Remote controls can be hacked. Especially the ones that use RF with out any encoding schemes can be hacked very easily. Keyless entry for cars, garage doors etc are the ones which are more venerable to attack. Attackers use custom made handsets which mimick the frequency of the original handset to get the attack done. Rolling code security mechanisms are used to protect wireless remotes from such attacks.

The idea is to use a synchronised code. The transmitter and receiver agrees on a particular code for the next transmission. If only that matches in the next transmission will it be accepted. After every successful transmission the code is changed by either the transmitter or the receiver and is then synchronized. In this method no other handset can communicate with the receiver with out knowing the code. The only draw back of this system is that only one handset can be used.

18 Responses to “Rolling code security for remote controls”

on 20 Mar 2008 at 8:27 am1Will Warner

This is a clearer and more accurate description of how rolling code security works– basically the transmitter and receiver each have a pseudo-random number generator and cycle it once each time a signal is sent.

http://auto.howstuffworks.com/remote-entry2.htm
on 20 Jul 2008 at 9:58 pm2leena

this is a good idea.could you send me the required info so i can use it in my final year project.plz you\’ll be helping me lots.
on 15 Jan 2009 at 12:03 pm3debasish tripathi

sir i am interested in the project so can u please send me the required circuit diagram and all necassary information regarding the project as soon as possible if possible by today
on 25 Jan 2009 at 10:48 am4Aanand

iam interested in this project please send me the details to my mail
on 28 Feb 2009 at 8:15 pm5Arsalan

this is really a good idea. plzz send me the required circuit diagram and other information required for the project..

will be waiting….
on 12 Mar 2009 at 4:10 pm6Peter

hi, could you pliz send me the necessary info to implement the project.thank you
on 14 Mar 2009 at 10:30 pm7ranvir kumar

will you please send me the circuit diagram and other necessary information required for the project.
waiting for your reply.
on 10 Apr 2009 at 11:31 am8kaja

Plz send to me the details of this interesting project asap.
Thx in advance
on 14 Jun 2009 at 7:35 pm9Hemalatha

hi, could you pliz send me the necessary info to implement the project.thank you
on 22 Jun 2009 at 10:31 am10Durai Muruganandham

wow… its very intresting..!
could you sent me the full detail about this project?
also i need the cost of this project..
waiting for your reply..
on 28 Jun 2009 at 9:50 pm11pragati

this is an good idea…… plz can you forward me more details abt this for my final year project
on 02 Jul 2009 at 4:39 pm12Ragini

This is really intriguing..can you tell me more precisely how to implement the idea..because I’m planning this as my final year project.
Thank you
on 10 Jul 2009 at 8:58 am13priya

sir can u please send me the detailed information about this project.thank u.
on 17 Jul 2009 at 11:35 am14mitesh

this is an good idea…… plz can you forward me more details about this for my final year project
on 17 Jul 2009 at 11:50 am15dinesh

Hi,
if You can send us more detail… I want to work out on this project as final year project…

Hope You would co-operate….
on 18 Jul 2009 at 6:17 pm16trupthi

hi…………i wud like to implement this project for my final year.Can u plz mail me the necessary infrmtn.
THANK U………..
on 18 Jul 2009 at 6:19 pm17trupthi

Hi………….i wud lik 2 implement dis prjct fr my final year.Can u plz mail me the necessary infrmtn.
THANK U…………….
on 18 Jul 2009 at 7:59 pm18aarthi

kindly forward me the details n circuit at aarthi8688@yahoo.com

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18 Responses to “Rolling code security for remote controls”

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