IT Security Stack Exchange
IT Security Stack Exchange

Questions tagged [locks]

Use for questions about the security of physical locks, as opposed to e.g. write locks on a database.

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Electronic security lock code length

I am debating with a friend about the security of a building lock that uses four user-selected digits as input. His argument is that it's enough physical security to deny someone access long enough for the people inside to take whatever action they…
ipartola
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How secure is BLE for a door lock

I am interested in setting up a trigger that can unlock door locks using an iPhone. The lock and unlock mechanism is not an issue as I have an API end point for this once authorized it is more an issue around the trigger. I have seen that in the…
John
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Deadbolt will not release key easily

My car was broken into recently and its left me feeling uneasy about my security. I live in an apartment complex that is getting repaired so the traffic is heavy in and out of the building daily. The main door to my apartment is secured by deadbolt…
Sam Benson
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Is a Cloud-Connected Door Lock More Secure Than a Traditional Lock and Key?

Now that app based door lock replacements are getting more popular in the market, I'm wondering what the security risks are and why or why not this is more secure than an old fashioned lock with a physical key.
Kristian
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Tricky apartment key fob copies frequency & code correctly but the copy doesn't work - not a rolling fob

I have this key fob for our apartment building, and I want to make a copy of it. I've taken it to 3 locksmiths who are able to create a copy, but the copies don't work. I've confirmed that it doesn't appear to be a rolling fob by comparing the…
user245365
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1 answer

Physical mechanical examples of "M-of-N" locks?

Arbitrary "M-of-N" secret-sharing protocols are a well-studied topic in cryptography, and are apparently so useful that Bitcoin Script devoted a whole opcode to them. In this blog post, I write: Suppose we run a bank, and suppose that our bank…
Quuxplusone
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Is it possible to attack car key fobs with regular RF devices?

I hope most of the key less entry cars are using rolling codes in order to improve the security between the key fob and the car. Is it possible to intercept this communication using a device such as HackRF? Can we jam the signal from the key fob to…
user3496510
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Thoughts on Vaccine Security

Are there any recommendations for the physical security of COVID-19 vaccine? I recently watched this video https://www.youtube.com/watch?v=uoqMA9vAOrQ on covid-19 vaccine distribution. At the 0:40 mark, someone enters a code to access a locked…
emory
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When they make physical locks, do they really just make a few variations of the keys and then mix them together and sell?

I always assumed that each lock is unique and can only be opened with the keys it was sold with (or any copies made later from those originals). But the truth seems to be that they just make "a few" variations (10? 100? 1,000? 10,000?), mix them…
Eddye Flores
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Why do most cars use physical keys and no PIN?

Why do car makers rely on physical start keys, which can be stolen by home burglars and then used to start the vehicle? Why don't they use more secure methods such as a personal PIN, or a pin code to unlock the private key which could be stored as a…
Christian
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