Secure data mirroring method with key negotiation function

Abstract

The invention discloses a secure data mirroring method with a key negotiation function. The system comprises a master database encryption module, a master database security mirroring module, a slave database security mirroring module and a slave database decryption module. The main database encryption module is responsible for performing encryption preprocessing and grouping encryption on data ofa main database based on a CBC mode, and transmitting the data in a ciphertext mode to ensure confidentiality; the slave database decryption module is responsible for decrypting and verifying the integrity of the mirror image data and restoring the mirror image data based on the CBC mode, and has the capability of resisting replay attack; the master database encryption module and the slave database decryption module distribute session keys through the key forwarding center to ensure the safety of key distribution; and the master database security mirroring module and the slave database security mirroring module avoid data leakage through authorization and encrypted mirroring data transmission. The invention provides an encrypted data mirroring method which realizes safe data synchronization and is suitable for master-slave replication among all databases.

Description

[0001] Technical field: [0002] The invention relates to a safe data mirroring method with key negotiation function, which belongs to the field of computer network communication and information security. [0003] Background technique: [0004] Database mirroring is a data synchronization technology that automatically copies the entire database or some of its key data to another disk. Whenever the data in the primary database is updated, the database management system will automatically copy the updated data to ensure Consistency between mirrored data and primary data. Database mirroring is mainly used for data backup and coping with high concurrency scenarios. When the storage medium fails, the mirrored disk can continue to provide database availability. At the same time, the database management system automatically uses the mirrored disk for database repair, without shutting down the system and reinstalling the database copy. ; When the storage medium is not faulty, database...

AI Technical Summary

Problems solved by technology

[0019] Aiming at the technical problems of the above data mirroring method such as poor security, sensitive information leakage, large system overhead, poor platform compatibility, poor versatility, high complexity, poor operability, slow system response rate, and poor real-time performance, the present invention is based on trusted The data encryption technology of the third-party key forwarding center and the synchronization technology based on log files provide a secure data mirroring method with key negotiation function; this method can effectively avoid data leakage, reduce system overhead, and improve System response rate, low complexity, good platform compatibility, suitable for master-slave replication between all databases, strong operability

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