At this year's two sessions, the blockchain became a hot topic for the deputies, and this situation has also caused many ordinary people to doubt the extra blockchain. What is the blockchain? It will bring us in the future. What changes have you made? Let's take a look at the related content with the embedded Xiaobian.
On February 26th, the People’s Daily published an article related to the blockchain in the 17th edition, and it caused a heated discussion among the community. At this year's two sessions, Tencent Ma Huateng, Baidu Li Yanhong, 360 Zhou Hongyi, Netease Ding Lei, New Oriental Yu Minhong, Suning Holdings Zhang Jindong, Inspur Group Chairman Sun Yishu and 58 Group CEO Yao Jinbo and others all expressed their views on the blockchain. .
The most potential disruptive technologyAt present, the blockchain has been called the core technology of the fifth round of disruptive revolution after the steam engine, power, information and Internet technology. Schwab, founder and executive chairman of the World Economic Forum, believes that the fourth industrial revolution includes artificial intelligence, blockchain, 3D printing, intelligent manufacturing and other related technologies, and blockchain is an important bridge linking various technologies.
What exactly is the block? In a nutshell, the blockchain is a decentralized distributed ledger database with traceability, decentralization, and tampering through algorithmic encryption. This is a new technical specification that will also change the trust mechanism that will be present throughout the Internet.
In addition, it is precisely because the blockchain is not tamperable, which applies to complex encryption techniques. In the distributed network of blockchains, nodes communicate and trust, and rely on digital signature technology to realize identity verification and information authenticity and integrity verification through digital signature. Therefore, digital signatures have two functions. One is to determine that the message is signed and sent by the sender, and the other is to confirm the integrity of the message.
Hash algorithm in blockchainThe process of digital signature involves encryption algorithms such as hash algorithm and asymmetric encryption. These encryption technologies are the basis for trust in blockchain.
The hash algorithm, also known as the Secure Hash Algorithm (SHA), is a FIPS-certified secure hash algorithm. An algorithm that calculates a fixed length string (also known as a message digest) corresponding to a digital message. And if the input messages are different, they have a high probability of corresponding to different strings; and SHA is the five security hash algorithms certified by FIPS.
The reason why these algorithms are called "security" is based on the following two points (according to the description of official standards): 1. It is computationally difficult to reverse the original input message from the message digest. 2. It is theoretically difficult to find two different sets of messages that correspond to the same message digest. Any change to the input message has a high probability that the resulting message will be very different.
Asymmetric encryptionNon-symmetric encryption is both a description of the encryption and decryption process. Unlike symmetric encryption algorithms, asymmetric encryption algorithms require two keys: a public key (publickey) and a private key (privatekey).
The public key and the private key are a pair. If the data is encrypted with the public key, only the corresponding private key can be used for decryption; if the data is encrypted with the private key, only the corresponding public key can be used. Decrypt. Because encryption and decryption use two different keys, this algorithm is called an asymmetric encryption algorithm.
The blockchain with these two encryption methods is naturally no need to worry about security. Before the quantum computer is popular, the blockchain has no solution in terms of security.
Integrate regulation into technologyHowever, at present, the technological innovation and breakthroughs based on blockchain are continuous, but there is still no real killer application. The underlying technology of the blockchain is still immature and the infrastructure is still not perfect.
The biggest challenge in the development of China's blockchain is how to properly regulate the blockchain. China may not be able to compete with some advanced countries in the underlying technology, but the richness and innovation of Chinese application scenarios are second to none in the world.
The blockchain is in a period of strategic opportunity. How to make the regulatory authorities understand and tolerate the blockchain is a difficult problem. If it is, then China will lead the world in the blockchain field.
Some people think that the current decentralization and anonymity of the blockchain has a natural conflict with the current regulatory system, but in fact, if the blockchain wants to develop really fast, it will inevitably allow regulation to be integrated into the technology. The characteristics of non-tamperable, shared books, and distributed in the chain also make supervision more convenient.
summaryLet the regulator itself participate in the technology, and implement the technology supervision through the technology itself, which will finally resolve the conflict between the blockchain and the supervision. Recently, a US federal judge ruled that the US Commodity Futures Trading Commission (CFTC) can regulate virtual currency like commodities, and this ruling will also serve as an important basis for the blockchain to be regulated. .
An unregulated market is very dangerous. Moderate regulation will not only reassure the government, but will also enable all blockchain participants to find responsible units and promote the further prosperity of the entire market.
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