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Cyber safecracker
Two students Massachusetts Institute of Technology have shown that reliable mechanical combination locks does not happen. The story began with the fact that the inquisitive boy Jordan Grant (Grant Jordan) brought his friend Kyle Vogt (Kyle Vogt) safe with a combination of long-forgotten. Naturally, my friends wanted to know what's inside, but not in a hurry to use the saw and drill, and applied intelligence. The friends using a laptop and a few conventional electrical parts have created a robot that opened the safe for several hours.
First of all, the students studied the lock of the safe and found that this S & G 8400 - one of the most complex mechanical locks, which for almost 30 years been used by the US government to lock safes containing secret documents. This news upset once friends, but they have left their intentions and agreed on the fact that you can only open the safe by choosing the right combination of numbers.
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Kyle and Grant started to write an algorithm to open the safe. Calculations have shown that it is possible to reduce the number of combinations recruited by deleting "forbidden zones", which are due to design and production tolerances in the manufacture of the castle. As a result, managed to reduce the number of possible combinations is about an order. Students thus used materials available on the Internet for the design of locks and how to unlock them. Grant wrote the algorithm of the Java programming language and "cracks" started to build a "dialer" (similar to dial phone disk).
To drive the dialer students used simple stepping motor which detects the rotor position when the power is widely used in household appliances, such as disk drives. The working body dialer is a set of pipes that rotate the knob lock code, and feedback sensor, which detects that the door of the safe open, and immediately stops the motor. After the firmware of the microcontroller and download a dialer algorithm, friends started the process of dialing. The safe was opened after 21 thousand. Cycles. It should be noted that a weak motor and home-made design allows set at no more than one attempt in 1-2 seconds.
Unfortunately for Grant and Kyle in the safe was not anything interesting. However, after the experience of the transition of the US government on the electronic locks it seems quite reasonable - in the modern world of electronics and software perfect mechanical locks are starting to look more and more archaic.
Source:
First of all, the students studied the lock of the safe and found that this S & G 8400 - one of the most complex mechanical locks, which for almost 30 years been used by the US government to lock safes containing secret documents. This news upset once friends, but they have left their intentions and agreed on the fact that you can only open the safe by choosing the right combination of numbers.
[next]
Kyle and Grant started to write an algorithm to open the safe. Calculations have shown that it is possible to reduce the number of combinations recruited by deleting "forbidden zones", which are due to design and production tolerances in the manufacture of the castle. As a result, managed to reduce the number of possible combinations is about an order. Students thus used materials available on the Internet for the design of locks and how to unlock them. Grant wrote the algorithm of the Java programming language and "cracks" started to build a "dialer" (similar to dial phone disk).
To drive the dialer students used simple stepping motor which detects the rotor position when the power is widely used in household appliances, such as disk drives. The working body dialer is a set of pipes that rotate the knob lock code, and feedback sensor, which detects that the door of the safe open, and immediately stops the motor. After the firmware of the microcontroller and download a dialer algorithm, friends started the process of dialing. The safe was opened after 21 thousand. Cycles. It should be noted that a weak motor and home-made design allows set at no more than one attempt in 1-2 seconds.
Unfortunately for Grant and Kyle in the safe was not anything interesting. However, after the experience of the transition of the US government on the electronic locks it seems quite reasonable - in the modern world of electronics and software perfect mechanical locks are starting to look more and more archaic.
Source:
