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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

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2350877 No.2350877 [Reply] [Original]

Hello, /sci/, found a strange lock in my dorm that doesn't belong to me or the other two people living with me.

It has 8 buttons that can be depressed, yielding a code of up to 8 digits (all depressed) using the numerals 1-8 without any repetitions.

I'm thinking this lock was left over by an upperclassman or something, and would like to appropriate it for my own use.

So, anyone feel like cracking this lock with me?

>> No.2350892

2^8 aka 256 combinations?

>> No.2350899

>>2350892
No shit, huh?
Well, I guess it'd be 256-2, since no one is retarded enough to have a code with all the buttons pressed or unpressed.

>> No.2350902

>>2350899
You'd be surprised. The single most common password is 1234, last time I checked.

>> No.2350905

>>2350902
Along with "password", "qwerty", and "asdf".

Yes, people are truly fucking retarded.

>> No.2350906

>>2350902
Isn't that the factory default that a bunch of computer illiterate people are too lazy to change?

Kind of like Sysadmin>password

>> No.2350910

Try 1538. It looks like the most "random" password on the thing and thus the most likely to be chosen password by someone wanting a "hard" password.

Otherwise you could always just brute force it. It might take an evening, but it's totally doable with only 8 non-repeatable characters and a maximum of 8 digits.

>> No.2350911

i want a lock like that now OP

tie some string to the top part and attach it to your bed head board or something and pull to keep constant tension on the locking mechanism, faster to try combinations that way assuming it has a quick release

>> No.2350908
File: 20 KB, 300x300, 1294550910464.jpg [View same] [iqdb] [saucenao] [google]
2350908

>mfw i found one of these one time and somebody else cracked the combo by guessing 5 6 7 8

>> No.2350922

>>2350906
No, those are for actual passwords you choose yourself for things like email accounts.

http://www.tomshardware.com/news/imperva-rockyou-most-common-passwords,9486.html

Top 5 most used passwords
>1 - 123456
>2 - 12345
>3 - 123456789
>4 - Password
>5 - iloveyou

>> No.2350923

>>2350910
>>2350908
Nope. I blame the fact that I live in Taiwan...damn smart Asianese people....
>>2350911
I've already tried this, and the 5 button sticks appropriately. Not too sure what else, though...

>>whinks McCarthy,
Looks like CAPTCHA is into old politics...there's no saving us now.

>> No.2350936

http://www.dealextreme.com/details.dx/sku.4575

> 3-code 8-digit

Yeah good luck brute forcing that shit.

>> No.2350938
File: 627 KB, 2143x2309, padlock.jpg [View same] [iqdb] [saucenao] [google]
2350938

You can crack this sort of padlock with some water and measurement equipment. Within it there will be a column with notches cut out of it that must line up with the button mechanisms. You can detect where the notches are by slowly submerging it in water and seeing where the displacement derivative drops because the water is filling in the notch.

It helps immensely if you have another lock to take apart to see where everything goes on the inside, but you can probably do it with a single lock given enough effort.

>> No.2350940

>>2350911

You can has lock...

http://www.amazon.com/Ultra-Hardware-55044-Millimeter-Combination/dp/B001CLEVMY

>> No.2350943

>>2350922
The password my laptop is actually the enter key.

None of my prankster friends have managed to "crack" it yet.
Right under your noses, bitches!

>> No.2350958

12345678
87654321
43218765
87651234

>> No.2350961

>>2350943
The password to my computer is a 21 character long password using both numbers and letters (all gibberish, there are no words to be found in it). That's not even close to being my most secure password either.

>> No.2350967

Got it.
15
26
37
48

>> No.2350969

1258 was the code, woo!

Although I shouldn't be too excited over solving something with only 256 combinations...

>> No.2350974

>>2350969
Got to love forgetful people.

>> No.2350978

>>2350969
Well shit, looks like >>2350910 wasn't too far off.

>> No.2350981

>>2350974
Hellz yeah, now I've got another bulwark between my stuff and the people who'll be living in my dorm over winter break.

>> No.2351020

Why are there 256 combinations?

>> No.2351029

>>2351020
Eight buttons with two possible states each. 2^8 = 256. Potentially even fewer if there are other constraints, but no more than 256.

>> No.2351034

>>2351029

So regarding OP's stating that the code was 1258: it wouldn't matter whether each button was pressed in that particular order?

>> No.2351046

>>2350981
Considering that it took you all of 35 minutes to crack the lock, I'm thinking that it's probably not a very good deterrent if someone is interested in breaking into your stuff.

>> No.2351065

>>2351046

Especially dorm residents over winter break, who are bored with no home work, and post a question to /sci/ about how to open this lock...

>> No.2351079

>>2351065
WHY DID YOU GUYS HELP OP HE SMOKED ALL OF MY WEED YOU FUCKS

>> No.2351097

>>2351079
Thinks a stoner won't try 256 combos for free weed.

>> No.2351098

This topic reminded me, I also found a similar lock lying around on the ground. Except mine has 10 digits, 0-9. Does anyone know if these things can have any number of digits as the code, or if they always have 4/5/6 digits?

>> No.2351112

>>2351098
10 digits is still doable in an hour through brute force.