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This article mainly explains "what is the deficiency of blockchain security". Interested friends might as well take a look. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn "what is the deficiency of blockchain security?"

Algorithm security

Due to a large number of applications of various cryptographic techniques in block chains, this is a highly algorithm-intensive project, which is relatively prone to problems in implementation. There have been precedents in history, such as the National Security Agency's embedding flaws in RSA algorithms that make it easy to crack other people's encrypted messages. Once loopholes at this level emerge, it can be said that the foundations of the entire building that make up the blockchain will no longer be safe, with dire consequences. Earlier, Bitcoin was stolen because of a problem with the Bitcoin random number generator. In theory, the private key can be derived by using the same random number twice in the signing process.

Security of consensus mechanism

In the current blockchain currency technology, there are many consensus algorithms, the most common of which are PoW, PoS and DPos. However, whether these consensus mechanisms can achieve and ensure true security requires more stringent proof and time testing.

Safe use of block chain

One of the characteristics of blockchain technology is irreversible and unforgeable, but only if the private key is secure. The private key is generated and saved by the user and theoretically does not involve a third party. Once the private key is lost, you cannot do anything about the assets of the account. Once acquired by hackers, digital cash can be transferred.

System design security

Because the Mt.Gox platform has a single point of failure in business design, its system is vulnerable to DoS attacks. At present, the blockchain is fragmented, while the exchange is centralized. In addition to preventing technology theft, a centralized exchange must also manage people well and prevent man-made theft.

Generally speaking, from the perspective of security analysis, blockchain faces challenges in algorithm implementation, consensus mechanism, use and design. At the same time, hackers can also achieve the attack target by taking advantage of system security vulnerabilities and business design defects. At present, hacker attacks have more and more influence on the security of blockchain system.

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