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This article mainly introduces "what are the four core technologies of the blockchain". In the daily operation, I believe many people have doubts about what the four core technologies of the blockchain are. The editor consulted all kinds of data and sorted out the simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about what are the four core technologies of the blockchain. Next, please follow the editor to study!

The four core technologies of blockchain are point-to-point distributed technology, asymmetric encryption technology, hash algorithm and consensus mechanism. Peer-to-peer technology, also known as peer-to-peer Internet technology, depends on the computing power and bandwidth of network participants, rather than focusing on a small number of servers.

This article operating environment: windows10 system, thinkpad T480 computer.

The four core technologies of blockchain are:

Peer-to-peer distributed technology (P2P)

Peer-to-peer technology (peer-to-peer, referred to as P2P), also known as peer-to-peer Internet technology, depends on the computing power and bandwidth of network participants, not on a small number of servers. P2P technology has obvious advantages. The distribution characteristics of peer-to-peer network, through multi-node replication of data, also increases the reliability of failure prevention. In pure P2P networks, nodes do not need to find data through the central index server. In the latter case, there is no single point of crash for the system.

Asymmetric encryption technology

Asymmetric encryption (public key encryption) refers to the use of different keys in the process of encryption and decryption. In this encryption technology, each user has a pair of keys: a public key and a private key. The public key is used in encryption and the private key is used in decryption. The public key can be made public on the Internet, but the private key needs to be saved by the user. This solves the security danger of key sharing in symmetric encryption. Compared with symmetric encryption, asymmetric encryption is more secure: both sides of symmetrically encrypted communication use the same key, and if one party's key is compromised, the whole communication will be cracked. On the other hand, symmetric encryption uses a pair of keys, the other pair of keys are public, and the keys are kept by themselves, so there is no need to synchronize the keys before communication like symmetric encryption.

Hash algorithm

The hash algorithm, also known as the hash algorithm, reflects a binary value of any length as a short fixed-length binary value, and this small binary value is called a hash value. The principle is actually very simple, which is to convert the transaction information into a fixed-length text string.

Consensus mechanism

Cryptocurrency is mostly designed by centralized block chain, and the nodes are scattered and parallel everywhere. It is necessary to design a system, maintain the order and fairness of the system, unify the version of block chain, encourage users who provide resources to maintain block chain, and punish malicious perpetrators. In such a system, it must be proved in some way that who has obtained the packaging right of the block chain (also known as the accounting right), and can get the reward for packing the block, or who has the intention to be harmed, will be subject to a certain degree, this is the consensus mechanism. Generally speaking, if the Chinese Weibo, American virtual currency players, African students and European travelers do not know each other, but they think you are a good person, they can basically judge that you are not bad.

At this point, the study of "what are the four core technologies of the blockchain" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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