The influence of quantum computing on bitcoin
bitcoin is stored in a digital wallet. You can store it on your local hard disk or mobile phone, or in a variety of online bitcoin exchanges. Keeping bitcoin locally is like hiding money under a mattress. If something goes wrong with your digital wallet, your money will be gone
to remit or collect money, you need to point your bitcoin client or network exchange to a bitcoin address, which is the address of every wallet. After a few minutes, bitcoin will generally leave your wallet and enter the other person's wallet. There are few sites that accept bitcoin, but there are a few. It's more difficult to use bitcoin in real life, but it can be achieved through some systems
what is the impact of bitcoin on the economy
despite all kinds of problems, the soaring price of bitcoin is partly e to more and more people using it. Bitcoin fans believe in its future. Ordinary people are also graally interested in cryptocurrency, but because it is too complex, it is difficult to popularize in the mass market. If it is really popular, the fluctuation of bitcoin's value will lead to greater turbulence in the global economy
if you bought $1000 bitcoin in 2010, it's worth about $35 million now. But if you buy $1000 bitcoin in early 2014, you'll only have a quarter of your purchasing power a year later. How would you feel if you paid with bitcoin and found that you could only buy half of what you had a few days ago
this kind of inflation is unstable, but if it is used in parallel with the government supported currency, bitcoin does have some advantages. Few people will exchange all their assets for bitcoin.
I think this is more serious than the loss, but it should have little impact on our real currency. Because the two are not related . The currency of the virtual world is a game created by capitalists in order to converge the wealth of people in the real world. But no matter how we ordinary people speculate, we can't change the fate of these capitalists. They often dominate the changes in the war situation, turning their hands into clouds and covering their hands with rain. But no matter what they do, it should have little impact on the real world currency, otherwise governments will not allow them to exist
Therefore, changes in the bitcoin market will not affect the value of our real currency or other aspects. Even if there is, the governments of various countries will also vigorously suppress and try to rece the impact in this regard, so we should relax our mindzero knowledge proof is a technology that the verifier can make the verifier believe a certain conclusion is true and credible without providing the verifier with the information itself. At present, the anonymous transaction of zcash, a digital asset with outstanding anonymity, is realized by "zero knowledge proof"
for example, a has to prove to B that he has the key to a room. Suppose that the key can only be used to open the lock of the room, but no other method can. At this time, a can choose to give the key to B, and B can use the key to open the lock of the room, so as to prove that a has the correct key of the room
or a opens the room with the key, takes an object out of the room and shows it to B. B knows that the object is only in the room. The principle of method two is zero knowledge proof
zero knowledge proof can prove that I know the secret without disclosing the information itself, and can effectively solve many verification problems.
at present, we do not have such quantum algorithm, but what should we do if we find it in the future? As we all know, bitcoin aims to identify the speed of mining, and also increases the difficulty of mining. It means that the difficulty of finding the algorithm will become more complex
in fact, it is impossible to mine with ordinary computers, so miners use ASIC chips to dig bitcoin. At present, there are two kinds of cryptocurrency, RSA and elliptic curve cryptocurrency. In fact, these two cryptocurrency methods are vulnerable to quantum computer attacks. According to Anastasia, we only need 2500 cubits to interrupt algoant, interrupt EC, and about 4000 cubits to interrupt RSA
Hackers can identify bitcoin wallet addressesin the current situation, hard forking is impossible because many users have lost their wallet addresses and coins. Now, the worry is that quantum computers can easily help track lost wallets, and hackers can use them to decrypt and retrieve such lost coins
However, the main focus is the research of quantum computer. The entry of such computer system will make the cryptocurrency system face risks. The system could be the destroyer of bitcoinon the evening of October 23, Beijing time, the 150th anniversary edition of Nature magazine published a paper claiming that Google has successfully achieved "quantum hegemony" this event named "Hello world" in the quantum field immediately occupied the front page of the mainstream media, and the description of "quantum computing in 200 seconds = 10000 years of the most powerful supercomputer on earth" in the paper has become a hot topic of the whole Internet
at present, many cryptography and quantum cryptography experts are advocating the establishment of financial security system as soon as possible, except that the encryption currency projects such as TaiFang and quantum chain focus on quantum resistance. According to William tooton, a reporter from Bloomberg technology, on twitter last month, the National Security Bureau has been committed to the research of related technologies. Therefore, unless the threat of quantum computing suddenly erupts, bitcoin still has time to deal with its arrival“ Bitcoin is alive, consensus is there, currency is there, if not upgraded, it will not disappear because of algorithms or vulnerabilities. But the problem of quantum resistance has not been solved. With the continuous development of quantum computers and the arrival of more qubit chips, this will still be the sword of Damocles hanging on the head of cryptocurrency. "< br />
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wannacry blackmail virus prevention method:
1. Install the latest security patch for the computer. Microsoft has released patch ms17-010 to fix the system vulnerability of "eternal blue" attack. Please install this security patch as soon as possible; For Windows XP, 2003 and other machines that Microsoft no longer provides security updates, we can use 360 "NSA Arsenal immunity tool" to detect whether there are vulnerabilities in the system, and close the ports affected by the vulnerabilities, so as to avoid being infringed by blackmail software and other viruses
2. Close ports 445, 135, 137, 138 and 139, and close network sharing
3. Strengthen the awareness of network security: don't click the unknown link, don't download the unknown file, don't open the unknown email...
4. Back up the important files in your computer to the mobile hard disk and U disk as soon as possible (regularly in the future), and save the disk offline after the backup
5. It is recommended that users who are still using Windows XP and windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.