Verifiable Distributed Database Access Control Method

Abstract

The invention discloses a verifiable distributed database access control method, including the steps of initializing encryption parameters; the steps of initializing smart contracts; the steps of generating authorization ciphertext; the steps of issuing authorization parameters; the steps of user registration; steps; the steps of modifying user attributes and the steps of updating the decryption key by the user. The present invention does not have the problem of authorization failure caused by a single point of failure, and ensures that data parameters are stored on the blockchain to achieve security and cannot be tampered with; it can perform fine-grained security access control on distributed database access rights and revoke user attributes, preventing It solves the responsibility identification problem caused by key leakage and the database security problem caused by token leakage; at the same time, the record of user access to the database can be verified, traced, and non-repudiation, which is convenient for the database manager to audit and verify the access record; security High, reliable and practical.

Description

technical field [0001] The invention belongs to the technical field of databases, and in particular relates to a verifiable distributed database access control method. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, computers have been widely used in people's production and life, bringing endless convenience to people's production and life. The frequent use of computing equipment has brought about the rapid growth of massive data on the Internet, so the capacity and scale of the database are also gradually increasing. Databases on the Internet carry most of the core business data. With the improvement of people's security awareness, database security is getting more and more attention. At present, a large database is supported by multiple distributed database nodes, which can carry the data storage services of hundreds or even thousands of applications in the upper layer. How to ensure the secure...

AI Technical Summary

Problems solved by technology

Access control is a part of distributed database management. The centralized authorized access control mechanism is prone to single point of failure and easy to cause the central organization to do evil.

The traditional encryption scheme based on ABE attributes requires the participation of a key authority or a central organization, and in terms of security, there will be problems such as leakage of the user's private key and unidentifiable responsibilities

Images