Can bitcoin be cracked with a computer

1.

At present, the mining machines in the market are mainly divided into two categories, one is PC based mining machine, the other is professional mining machine based on ASIC chip

the general PC mining machine can be used as a home computer, but the CPU performance is weak and the power consumption is high. Professional mining machine based on ASIC chip can not be used as ordinary computer because it has no graphics card and does not support mainstream desktop operating system

extended data:

mining machine is one of the ways to obtain bitcoin is a kind of network virtual currency proced by open source P2P software. It doesn't rely on a specific currency institution to issue, but is generated by a large number of calculations of a specific algorithm. It uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions economically. The decentralized nature of P2P and the algorithm itself can ensure that the currency value cannot be manipulated by mass proction

any computer can become a mining machine, but the profit will be relatively low, and there may not be one in ten years. Many companies have developed professional mining machines, which are equipped with special mining crystal. They are tens or hundreds of times higher than ordinary computers

mining is actually a competition of performance and equipment. The mining machine composed of many graphics cards, even if it is just a garbage card like hd6770, can surpass the single graphics card of most users in terms of computing power

and this is not the most terrible. Some mining machines are made up of more such graphics card arrays. When dozens or even hundreds of graphics cards come together, the graphics card itself costs money. Considering the hardware price and other costs, there are considerable expenses in mining

in addition to the display card burning machine, some ASIC (application specific integrated circuit) professional mining machines are also put into the battlefield. ASIC is specially designed for hash operation. Although the performance may not be able to kill the display card in seconds, it is already quite strong. Moreover, because their power consumption is far lower than that of the display card, it is easier to form scale and the electricity cost is also lower, It is difficult to compete with these excavators. And this kind of machine will be more expensive

2. First of all, let's talk about the background. The basic principle of bitcoin "account" is key public key address. You can roughly understand it as "key box box number". Now is to start from the box number or box to crack the key
there are basically two kinds of attacks, one is dictionary attack, the other is brute force attack
dictionary attack is to use common passwords and their simple variants as keys one by one. As long as your pass phrase is not hard enough, the possibility of successful attack is very high. So if you want to use this, you need to popularize the knowledge of cryptography first, and don't think it's very safe to add a long password
if you don't use the wallet generated by pass phrase, you can only crack it violently, which is equivalent to enumerating all the possible keys. At present, this is impossible, even if the electronic computer is becoming more and more powerful. However, quantum computer can do it theoretically, but don't worry too much. If such a powerful quantum computer comes out, it will not only endanger bitcoin
at the same time, bitcoin has a second layer of protection: if an address only accepts bitcoin but does not output it, its public key is confidential, that is to say, no one else can see the box, only the box number. At present, the process of decing the box from the box number can't even be done by quantum computer. In other words, if there is a quantum computer, bitcoin has a last line of Defense: it's temporarily safe to transfer your money to a new address
finally, some time ago, the wallet generated by the Android client was attacked because of a bug in the underlying random number generator. In fact, this function is not random securerandom, which Google quickly admitted and fixed. It's hard to say whether this kind of thing will happen again, but I don't think we need to worry too much.

3. I suggest you don't go. I'm Lenovo. I g more than 10000 computers for a week and found 0.000034 bitcoins. It's not enough for electricity. If you want to speculate, it's better to go to the okex exchange.

4.

How to dig bitcoin:

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01

first, download a bitcoin e-wallet from the Internet. It should be noted that the wallet is very large

06

finally, fill in your miner's information in your mining tool. User name should fill in the miner's name. Remember to add the miner to your email in the form of your registered account

5. Theoretically, it can be cracked, but it's just a time-consuming problem. If you think about the cost of mining, you should know the difficulty of cracking. To protect bitcoin by means of encryption must make the cracker pay a much higher price than mining, otherwise everyone can get it by cracking rather than mining

6. Financial machines and tools refer to the machines and tools commonly used by banks and other financial institutions, such as anti-counterfeiting banknote counting machine, banknote checking machine, multiple counting machine, POS machine, intelligent terminal, coin sorter, banknote sorter, bundling machine, binding machine, shredder, ID card identification machine, etc. This paper introces the concept stock of financial equipment in A-share market for your reference only. Related concept stocks: Zhongke Jincai (002657), xinguo (300130), Guangdian Yuntong (002152), xinyada (600571), Changliang Technology (300348), Hengsheng Electronics (600570), yinjie (300085), Nantian information (000948), Tianjin CikA (600800), Yuyin Co., Ltd. (002177), Rongke Technology (300290), Zhengtong Electronics (002197), etc Huijin (300368), new Beiyang (002376), etc.

7. With the progress of the times, people pay more and more attention to the importance of health. Slowly, the unit also takes the annual health examination as the employee welfare! At the same time, professional health examination center is also increasing rapidly! So what is the difference between professional physical examination center and hospital physical examination
there are mainly the following 7 points:
1. The hospital is the place where patients gather, and it is also responsible for the examination of patients and people suspected of having diseases, so it is inevitable that there will be cross infection e to the aggregation of patients, and the modern physical examination center is aimed at the physical examination of healthy people, so the basic elimination of iatrogenic infection< 2. At present, the setting of physical examination sites in hospitals is not reasonable. The sites for doctor examination, instrument examination and laboratory examination are scattered. The physical examination is mainly carried out upstairs and downstairs for several times, while the physical examination center is set up as a hotel. The environment is warm and comfortable, and the examination departments are concentrated< 3. Although the hospital is well-known, the physical examination doctors are not necessarily the backbone of professional technology, which does not necessarily represent the overall medical level of the hospital. The medical staff of the physical examination center employ senior clinical doctors with rich medical experience, and they also receive strict physical examination service training, so it will ensure that you are convenient, fast and happy in the physical examination< 4. The modern health examination center is more flexible and convenient than the hospital, because it has more than 20 kinds of medical packages designed according to the age and occupation of the examinees. You can also freely combine the physical examination packages according to your own requirements, and you can also have a single physical examination. So the physical examination items are flexible, convenient and simple. But the hospital does not have the specialized health examination unit, is impossible to set up so many physical examination packages< 5. In modern physical examination center, there is no need to register or wait for physical examination, and the physical examination will be carried out as soon as the appointment is made. However, hospitals usually have only 1-2 days to check in a week, so the waiting time is long, mainly for groups, and generally few for indivials< 6. In hospital physical examination, men and women are often mixed in ECG, B-ultrasound, imaging and other departments, which will cause a lot of embarrassment and inconvenience for women. The modern physical examination center has different examination areas for men and women, and it is a one-to-one personalized service. Women do not have to worry about inconveniences, and fully take care of their privacy< 7. The conclusion of hospital physical examination is that the physical examination is completed. The modern central physical examination is a part of health management, it also has many follow-up services for physical examination, such as: free nutritional breakfast, Post Examination explanation, Post Examination follow-up, Post Examination consultation, online service, file management, post examination health care, prescription medication, birthday congratulations, etc
conclusion: hospital physical examination and modern physical examination seem to be the same in some forms, but they are quite different in many connotations. With the health examination has been recognized by the majority of the people, the hospital physical examination has also made great progress, but to some extent, there are still great differences between the two
beautiful health examination center is the best physical examination center in Fuzhou.