The NEC and NEC European Research Institute developed the world's fastest (block 1) blockchain consensus algorithm that can handle more than 100,000 transactions per second in a large-scale connection environment where the number of participating nodes reaches around 200. Ultra high recording performance. As a system that supports credit card transactions worldwide, processing performance per second must reach tens of thousands or more. This technology promotes the realization of this performance and accelerates the real application of blockchain in the business field.
In blockchain, multiple participants will record and share data, which can effectively ensure the authenticity of the data and prevent data from being tampered with. However, at the same time, there are certain problems in the speed of recording and the expansion of the number of participating nodes. . This problem arises from the algorithm used by the blockchain participants to reach a consensus. This time, NEC's newly developed software is not only equipped with a consensus algorithm that exceeds the traditional products in terms of recording performance and the number of participating nodes, but also can hide data from unrelated personnel. The performance it achieves is rapid and secure. All aspects are called the first in the world. In addition, IoT devices can also quickly reference data.
NEC is actively committed to promoting “social solutions business†on a global scale. The rapid and secure blockchain technology developed this time will help improve the efficiency of identity verification services in financial institutions and power transaction settlement services in smart grids. s efficiency.
ã€background】
Blockchain is a mechanism that helps participants to record and share data on the network. It is characterized by the fact that data that has not been tampered with can also be shared without passing through trusted organizations and central servers. Now, in addition to being applied to the processing of virtual currencies including Bitcoin, it has also received extensive attention as a secure information sharing tool, with securities transactions, trade transactions, energy transactions, supply chains, and In many areas such as document management, verification experiments are in full swing.
While the blockchain has received extensive attention, there are also certain problems. The first problem is the boundary between the recording speed and the number of participating nodes caused by the blockchain consensus algorithm. Although anyone can freely use Bitcoin's blockchain, writing only 7 pens per second is its performance limit. Even in a participant-defined blockchain targeted for commercial use, when the number of participating nodes exceeds several tens, the performance deteriorates drastically. The second problem is the concealment of data. Because all participants can see the records, there are certain obstacles in recording personal information and corporate secrets.
The software developed by NEC, whether it is recording performance or the number of participating nodes is far more than the traditional product software, has greatly improved scalability, and from the reliability of data hiding is unprecedented, it achieved Performance ranks first in the world in both speed and safety. At the same time, for the coming IoT era, IoT devices have also been developed that can quickly reference and verify blockchain data.
[Features of New Technology]
1. Maximize the use of trusted hardware for fast processing
In a large-scale environment where the number of participating nodes reaches about 200, ultra-high recording performance that can record more than 100,000 transactions per second is achieved. This is achieved by maximizing the use of the security features of the trusted hardware TEE (Note 2) equipped with a general-purpose processing program in recent years to reduce the necessary traffic and the number of communications necessary for the participating nodes to reach a consensus.
2. Protecting the privacy of transaction information
NEC has developed a mechanism that can limit the scope of disclosure of transaction information without having to disclose transaction information to all participating nodes. In this way, it is possible to control the transaction information in a specific group only to the nodes belonging to the group.
3. IoT devices will also implement fast and secure data references
Because the IoT device refers to the blockchain data, each participating node may respond to the record with inaccurate information due to failure or intentionality. Therefore, it is necessary to perform challenge verification to multiple participating nodes, but this will give processing capabilities. Limited IoT equipment brings a burden. Therefore, we have especially developed a way for IoT devices to quickly reference and verify blockchain data. In this way, even when they are referenced, they can flexibly apply the TEE of each participating node and perform fast verification in IoT devices.
The performance achieved by this technology is a must support for a system that carries out credit card transactions worldwide. It exceeds tens of thousands of pens per second and can be used to abandon the use of blockchain technology due to limitations in recording performance and number of nodes. At the same time, transactions involving personal information and business secrets can also be handled by ensuring the security and privacy of transaction information.
While actively promoting the verification experiment (PoC) in current financial institutions, NEC will also promote research and development of the blockchain and upper layers.
The NEC Group is actively committed to advancing the “social solutions business†globally and creating social values ​​that are safe, secure, efficient, and fair. The company integrates advanced ICT technology and knowledge to achieve a brighter, more colorful and efficient society.
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