Coding and decoding In the American encyclopedia, locks are a type of locking device designed by people. It can prevent unauthorized people to easily release the safety lock in the state of the latch. In order to prevent wind, beasts, and people, humans invented locks. In the long years, from rope locks to wooden locks, to metal locks and now the most advanced electronic locks, locks have gradually joined the principle of early bionics. The principle of leverage and the principle of coding, but the essential principles of its work have never changed. This is - coding and decoding. mechanical lock In ancient times, the original style of the lock was only the rope and knot used to bind the item to indicate the possession of the item by the owner. In the famous legend of ancient Greece, the prince Alexander of the Macedonian kings invaded the Arabian Peninsula and occupied Geldiion. In the center of the city's streets, there is an ancient chariot in the temple. The chariot is the famous "Goldios rope knot". According to the legend, the person who untied the knot is the ruler of Asia. Alexander could not solve it. Finally, he pulled out the sword and used the way of Alexander to cut the knot into two breaks. Hard to say Alexander is not really the way to open the knots, but today's car thieves who can not start in the face of strong steering wheel locks, steering wheel altogether with a saw to saw the child, they would not have thought that their ancestors Master, will it be Alexander? However, the origin of the locks did not begin with the kingdom of Alexandria. Experts from all over the world generally believe that there are two centers for the origin of locks: one is the two rivers and Egypt, and finally to Greece, Rome and even Western Europe, to the British Isles and then to the United States; the other is China, North Uploaded to North Korea, eastward to Japan, south to Vietnam and other places. All this change happened after humans had rooms and doors. The initial definition of the door was only a rough cork - it gradually evolved into a stronger metal bolt, which was used in the mechanism to insert them in the lock. These devices used springs and reeds. The structural position was changed, and various types of locks were born. In order to open them, we need specific keys. Early mechanical locking devices were created based on various mechanical principles. The function of the key is to make the corresponding locking mechanism of the lock change. In the process of unlocking (decoding), only when the key code and the lock code are consistently matched by the internal identification of the mechanism, the lock and lock can be made through the transmission mechanism. The tongue moves, releases the lock, and decodes smoothly. The safety performance of mechanical locks relies on two mechanical principles, one is to rely on the obstacles fixed inside the lock to prevent the fake key from entering and rotating, and the second is to use one or more movable limit objects to be installed in the lock. The key determines whether it is in the previously scheduled position. The more the number, the more complex the coding and the corresponding improvement in safety. These principles in mechanical locks have been born for thousands of years and are still being improved. The development of lock-key mechanical structure coding is still with us today. Although more and more electronic components are being used for new locks, mechanical door locks are sure to continue in design. Electronic locks The electronic lock is an electromechanical integrated lock that adopts electronic circuit control and uses an electromagnet or a satellite motor and a lock body as an execution device. Compared with the traditional mechanical lock, the electronic lock does not use a metal key, and the confidentiality and precision are greatly improved. The idea of ​​the invention of electronic locks originated from the automatic machinery invented in ancient times. For example, the automatic automatic door of the ancient Greek mathematician Herron, the wooden cows of Zhuge Liang in ancient China, driven by gravity or steam pressure, the most widely used is used in ancient tombs. Underground institution. The birth of the electronics industry made it possible to drive machinery with a small amount of electricity, so there was a leap forward in electronic locks. According to the "Yongle Grand Code", the door of the Afang Palace was built with magnets to inspect the iron weapons. If someone wants to be unfavorable to Qin Shihuang in iron, then they will be stagnation in front of the door. Modern magnetic locks were introduced in the mid-1990s. Britain, Austria, and Japan were the first countries to develop magnetic locks. To date, magnetic coding and marble structures have been skillfully combined in the structure of magnetic locks. Taking the most common type of magnetic lock as an example, in the entire lock cylinder, 360 degrees are distributed with several magnetic marbles - in the traditional mechanical marble lock, the marbles are pushed to the defined position by the tooth on the key, thereby making The lock cylinder rotates to remove the obstacle. In the latest magnetic lock, the key turns into a bare metal stick, and the magnetic point buried inside helps the marble reach the limit. Depending on the division and the magnetic pole of the magnetic marble in the lock cylinder, the magnetic point of the corresponding magnetic pole is buried in the corresponding position in the key. When the key is fully inserted, the magnetic ball inside the lock is either attracted or repelled, just in a position that is limited to open, and the lock cylinder is thereby rotated and opened. In the past mechanical lock cylinders, the earliest single-sided marbles had a narrow range of divisions, and there were manufacturing errors that could easily be dialed one by one. The cross lock that appears later is easy to be stressed by the shape of the keyhole determined by the key, and is easily violently opened by the opener with a high-strength tool. But the magnetic lock avoids all this. Only with a 7×7 dot matrix calculation, there are 7 positive and negative different magnetic poles in any of the 49 points, and there are hundreds of thousands of permutation coding methods. If the opener does not use tools such as magnetic probes, mathematically, it is almost impossible to implement the technology. However, as a famous ghost in the history of locks, Alexander once again possessed the soul. People quickly discovered that in a carry-on item, a small lighter can easily create a temperature that demagnetizes the magnetic ball. The high-temperature treated magnetic marble loses its magnetic properties and the difficulty of opening is also greatly reduced. This is just a small, simple episode in the development of modern locks and the opening of technology. Throughout the world, from the government to the private sector, from the sun to the illegal, the struggle for the invention of locks and the unlocking of technology has not subsided. No one in the industry is plagued by this invisible war. And this torture will continue.
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Almost at the same time that private wealth was born, humans began to learn to hide, and each lock and every secret will be given a lock. The Chinese said that the role of the lock is to "prevent the gentleman from being a villain." Since ancient times, the development of locks has been a contest between two masters. For the time being, the purpose of invading theft of the money is thrown away. In terms of technology, the code is coded, the riddle is exhausted, the unlocker is decoded, and the mystery is restored. Two experts in the opposite direction of work, in the dark, each speculates on each other's minds; two sets of tools , one bright and one dark, using the highest craftsmanship in their era, constitute the oldest, longest, most mysterious one in human history. Field fights.