Electronics > Projects, Designs, and Technical Stuff

Dip Switches

<< < (3/3)

Buriedcode:
Ahh yes, the "learning receivers" are everywhere on ebay/amazon/alibaba etc.. because they're so much easier to set up, and can "learn" from remotes with different encoders.  I'll second the advice on the rolling code systems.  It's easy to say that the basic systems are insecure - but that assumes someone knows what they're doing in the first place (unlikely), but a rolling code system is essentially unbreakable.

madires:
The old school codes are basically an address plus function (push button ID). They are easy to record and replay. The rolling codes are a little bit more complex and add a varying element to make replay attacks harder. They aren't unbreakable but require some effort by the attacker. It's a compromise between security and simplicity (one-way communication). More secure systems like challenge-response would require two-way communication.

Buriedcode:

--- Quote from: madires on April 15, 2019, 03:46:27 pm ---The old school codes are basically an address plus function (push button ID). They are easy to record and replay. The rolling codes are a little bit more complex and add a varying element to make replay attacks harder. They aren't unbreakable but require some effort by the attacker. It's a compromise between security and simplicity (one-way communication). More secure systems like challenge-response would require two-way communication.

--- End quote ---

Yeah I wasn't going to go into the latest side channel attacks as they cover most existing systems used in cars.

Navigation

[0] Message Index

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod