3 ms·
While rolling code has now been the norm for some time, there are a lot of older garage door openers still in service. More concerning, commercial buildings lik
by jcrawfordor 5y ago
While rolling code has now been the norm for some time, there are a lot of older garage door openers still in service. More concerning, commercial buildings like apartment complexes often remain vulnerable to these trivial replay attacks because of a "lowest common denominator" effect... they purchase gate controllers, door locks, tokens, etc from different vendors, and the only interoperable protocol may be a very poorly secured one. This is a major problem with door locks where very outdated ProxCard standard remains in wide use due to low price and interoperability.
- mittermayr 5y agoYeah, I think it's the fact that many of the garage doors I see around here are easily 15 to 20 years old or more. My brother approached me recently about his apartment complex garage door, as they only give out one remote unit (but they have two cars), so we duplicated the code hoping it's not a rolling code, and he tried it out and it works. So he duplicated the remote without trouble. It's an ESP32 with a battery.