How To Make Decentralized Storage More Secure？
With the continuous development of information society, people are producing a lot of data at any time, and the storage demand of data is also increasing exponentially. How to store these data safely and stably has become an urgent problem for cloud service providers.
At present, the traditional HTTP has the problem of centralization. The disadvantages of centralized network storage can be seen from many network security incidents. If it is necessary to further improve its reliability, it is necessary to carry out decentralized transformation.
Compared with centralized storage, decentralized storage has lower cost advantages, which can save network bandwidth resources and reduce server storage costs. Moreover, due to the distributed storage, the transmission speed is faster, and it will not cause centralized access congestion. It can also resist multiple attacks, and there will be no single point of failure and privacy leakage. What’s more important is that the user’s data will not be accessible after being deleted like it is stored in the central server. It can be permanently saved and can not be tampered with.
In short, decentralized storage can better protect users’ data sovereignty and data privacy.
Although decentralized storage has a bright future, most of the blockchains with storage characteristics in the market are only subjective recognition of the storage capacity of blockchain nodes, which can not achieve a trusted node from mathematics and computer algorithm, and can not achieve safe and reliable trust for the stored data. This violates the original intention of blockchain to build trusted data and nodes.
Based on blockchain and Trusted Execution Environment (TEE), Authmen network realizes sensitive data protection. Unlike the data protection mechanism based on “review”, Authmen implements data protection based on trusted “code”.
Trusted Execution Environment is a group of software and hardware components, which can provide necessary facilities for applications, and is an area that can isolate computing and secure storage. Simply put, TEE is a special area in the computer system, and no one can access internal data except for trusted communication.
TEE is located in the CPU, but independent of the operating system. It can store private information and execute private code without being tampered with. Each tee has its own key. Only the third party holding the corresponding key can see the contents, which ensures the trustworthiness of tee. The contents can be modified by writing or upgrading programs, which can resist both software and hardware attacks against the main system hard disk.
The bottom layer of Authmen network is based on Leviatom’s three-layer computing power system of Trias architecture, and the combination of TEE trusted computing and Zero-Knowledge Proof technology to complete the right confirmation and security protection of distributed storage data. The user’s data will not be arbitrarily deleted by any person or institution, and the ownership of the data will return to the user.
The trusted network constructed by Levitom layer of Trias maintains a unique white list for each storage node, which can prevent the loading of abnormal programs and effectively block network security attacks. User data can not be seen by anyone, including the node where the data is stored. This also eliminates the space for “insiders” to do evil from the source, because “insiders” can not obtain privacy data.
At the same time, Authmen uses HCGraph, which is a trusted computing technology based on Heterogeneous tee. With the help of Gossip Protocol, it builds a “trusted acquaintance” network between consensus nodes using different TEE technologies, constructs a “conspiracy default” model of global nodes, and efficiently locates trusted nodes, making consensus more efficient and cost-effective.
In the Authmen ecosystem, every user can participate in the trusted computing network. By providing computing power and combining with blockchain technology, the whole process of resource contribution, data flow and incentive accounting is open and transparent, monitorable, measurable and traceable, and the safe and private data cooperation and the operation of trusted application platform are ensured.