Bitcoin anti quantum
Publish: 2021-04-30 18:17:33
1.
investment in bitcoin is not so profitable now. All the financial procts I know belong to usury, and those with an annual rate of more than 24% are generally not protected by the state. As far as I know, the monthly profit of 30% are all pyramid schemes, such as BBT mint
of course, maybe you will refute me, because you do get the benefits, but if you don't get the benefits, will you invest more money, will you go to the top? This can go to the network about the Ponzi scheme.
investment in bitcoin is not so profitable now. All the financial procts I know belong to usury, and those with an annual rate of more than 24% are generally not protected by the state. As far as I know, the monthly profit of 30% are all pyramid schemes, such as BBT mint
of course, maybe you will refute me, because you do get the benefits, but if you don't get the benefits, will you invest more money, will you go to the top? This can go to the network about the Ponzi scheme.
2. How can I not show you my mother but still prove that my mother is my mother
zero 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.
zero 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.
3.
on 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 />
4. Abstract: in a small laboratory in a secluded village 50 miles north of New York City, intricate pipelines and electronic equipment are wound under the ceiling. This seemingly haphazard pile of devices is a computer. It is different from any computer in the world, but it is a milestone device in the history --- quantum computer
on May 3, 2017, a big news in science and technology circles: the world's first optical quantum computer surpassing the early classical computer was born. This "world's first" is a genuine "made in China" and is the result of a breakthrough made by Professor Pan Jianwei and his colleagues of the University of science and technology of China and Professor Wang Haohua of Zhejiang University
if the speed of traditional computer is bicycle, the speed of quantum computer is just like airplane. In the past few months, IBM and Intel have announced that they have built 50 and 49 qubit quantum computers, respectively. Some experts point out that within ten years, the computing power of quantum computer may catch up with and surpass the current supercomputer
at the American Physics Annual Meeting held in Los Angeles on March 5, 2018, Julian Kelly, a research scientist at Google quantum AI laboratory, reported that he was leading the Google team to test a 72 qubit universal quantum computer. However, this is only 72 qubits. At this rate of development, the magic power of quantum computer will soon be terrifying
then, why do we say that quantum computers can easily crack bitcoin? What's the matter
it takes 600000 years to crack an RSA cryptosystem, but it takes less than three hours to use a quantum computer with considerable storage function! In other words, with the leap from electronic computer to quantum computer, the computing power and the ability to process big data of the whole mankind will be improved for tens of thousands or even hundreds of millions of times. In front of the quantum computer, the traditional electronic computer we used to be proud of is equivalent to the previous abacus, which is bulky and old
although the bitcoin protocol uses asymmetric cryptocurrency, the corresponding public key is used to verify the transactions signed by the private key to ensure that bitcoin can only be used by legitimate owners. It is not feasible to force the private key to be consistent with the public key by using the currently available computer, but quantum computer can solve the problem of asymmetric cryptocurrency
in addition, the rule of bitcoin is that the more processed block will be added to the blockchain, and the other block will be voided. For example, it's like 51 people in an account book say that you have saved 100 yuan in the bank, while 49 people say that you have saved 50 yuan. In this case, the minority of blockchain algorithm is subordinate to the majority, and the bank thinks that you have saved 100 yuan is true, and that you have saved 50 yuan is false. So once a miner has 51% of the computing power, other subsequent miners will not be able to continue to get bitcoin
Andersen Cheng, co-founder of a network security company in the UK, says bitcoin will come to an end the day quantum computers come into use. What's your opinion?
on May 3, 2017, a big news in science and technology circles: the world's first optical quantum computer surpassing the early classical computer was born. This "world's first" is a genuine "made in China" and is the result of a breakthrough made by Professor Pan Jianwei and his colleagues of the University of science and technology of China and Professor Wang Haohua of Zhejiang University
if the speed of traditional computer is bicycle, the speed of quantum computer is just like airplane. In the past few months, IBM and Intel have announced that they have built 50 and 49 qubit quantum computers, respectively. Some experts point out that within ten years, the computing power of quantum computer may catch up with and surpass the current supercomputer
at the American Physics Annual Meeting held in Los Angeles on March 5, 2018, Julian Kelly, a research scientist at Google quantum AI laboratory, reported that he was leading the Google team to test a 72 qubit universal quantum computer. However, this is only 72 qubits. At this rate of development, the magic power of quantum computer will soon be terrifying
then, why do we say that quantum computers can easily crack bitcoin? What's the matter
it takes 600000 years to crack an RSA cryptosystem, but it takes less than three hours to use a quantum computer with considerable storage function! In other words, with the leap from electronic computer to quantum computer, the computing power and the ability to process big data of the whole mankind will be improved for tens of thousands or even hundreds of millions of times. In front of the quantum computer, the traditional electronic computer we used to be proud of is equivalent to the previous abacus, which is bulky and old
although the bitcoin protocol uses asymmetric cryptocurrency, the corresponding public key is used to verify the transactions signed by the private key to ensure that bitcoin can only be used by legitimate owners. It is not feasible to force the private key to be consistent with the public key by using the currently available computer, but quantum computer can solve the problem of asymmetric cryptocurrency
in addition, the rule of bitcoin is that the more processed block will be added to the blockchain, and the other block will be voided. For example, it's like 51 people in an account book say that you have saved 100 yuan in the bank, while 49 people say that you have saved 50 yuan. In this case, the minority of blockchain algorithm is subordinate to the majority, and the bank thinks that you have saved 100 yuan is true, and that you have saved 50 yuan is false. So once a miner has 51% of the computing power, other subsequent miners will not be able to continue to get bitcoin
Andersen Cheng, co-founder of a network security company in the UK, says bitcoin will come to an end the day quantum computers come into use. What's your opinion?
5. In fact, the threat of quantum computers to bitcoin is not mining, but trading attacks. We know that the transaction of bitcoin is completed by decentralized cryptography authentication, and the core of this authentication method is hash algorithm. If there is a quantum computer, it can create collisions (Grover algorithm, polynomial acceleration) to forge transactions for profit. Because the core algorithm of bitcoin has been fixed, if the algorithm is not changed, the key length cannot be increased, and this attack cannot be resisted. However, if there is a practical quantum computer, what can we do is better than this kind of attack...
please accept
please accept
6. Yes, this is true of most systems that rely on cryptography, including traditional banking systems. But quantum computers don't exist, and maybe not in the near future. When quantum computing is really about to become a threat of bitcoin, we can use the post quantum algorithm to update the bitcoin protocol. Based on the importance of this update, it is reasonable to believe that developers will review it repeatedly and finally accept it for all bitcoin users
7. In short, the computing power of quantum computer is too strong. It can even be said that in the future, there may be a quantum computer with more computing power than all ordinary computers in the world, and then such powerful computing power can realize tasks that could not be completed before, such as cracking the bitcoin wallet by exhaustive inverse operation, That is to say, the bitcoin you bought with a lot of money will be easily stolen. Do you think it will collapse?
8. It can be broken, but it's too expensive
9. Quantum chain qtum
10. Even if there is a quantum computer, cracking bitcoin is not so easy, and basically has no practical value. Moreover, there are better solutions to make BTC more secure against quantum attacks, which can be added when necessary. You can refer to this article: http://bitcoinmagazine.com/6021/ ... and-how-we-can-fix/
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