Using a Toy to Open a Fixed-Code Garage Door in 10 Seconds

Posted: June 5, 2015 in Tech

It may be time to upgrade your garage door opener. Security researcher Samy Kamkar has developed a new technique that enables him to open almost any garage door that uses a fixed code–and he implemented it on a $12 child’s toy.

The attack Kamkar devised, known as OpenSesame, reduces the amount of time it takes to guess the fixed code for a garage door from several minutes down to less than 10 seconds. Most openers in commercially available garage door openers have a set of 12 dip switches, which are binary, and provide a total of 4,096 possible code combinations. This is a highly limited keyspace and is open to brute-force attacks. But even on such a small keyspace, those attacks take some time.

Kamkar has released the source code for the OpenSesame attack, but he has modified it slightly so that it won’t actually work, to prevent criminals from using it.

Full Story @ [threatpost]

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