Storage data encryption and decryption device and method

Abstract

The invention provides a storage data encryption and decryption method. The method comprises the steps that first, a memory reading and writing module is provided and used for reading and writing a secret key and conducting encryption and decryption on data passing through the memory reading and writing module, and the memory reading and writing module comprises a data encryption and decryption module used for operating an encryption and decryption algorithm; second, an off-chip data memory is provided and used for storing the encrypted data; third, a safety auxiliary module is provided and comprises a true random number generator used for generating a secret key and a secret key memory used for storing the secret key; fourth, the data written into the data encryption and decryption modulefrom the memory reading and writing module is encrypted by the data encryption and decryption module with the secret key provided by the safety auxiliary module, and then the encrypted data is written into the off-chip data memory; the encrypted data read from the off-chip data memory is decrypted by the data encryption and decryption module with the secret key and then read to a memory reading module. The invention provides a storage data encryption and decryption device. By means of the storage data encryption and decryption method and device, the data safety can be effectively improved.

Description

technical field [0001] The invention relates to the field of computer equipment science and technology, in particular to a storage data encryption and decryption device and method. Background technique [0002] With the acceleration of global informatization, network and mobile Internet devices have been closely connected with people's lives, and have become an indispensable carrier for information exchange in modern society. With the substantial improvement in the performance of mobile smart devices and the continuous expansion of the coverage of high-speed mobile Internet, mobile office and mobile financial transactions have been launched on a large scale. However, office data and financial transaction data are increasingly facing more threats. [0003] In order to solve the problem of data security, it is necessary to improve the level of computer technology, cryptography theory and network application. At present, information security protection has developed from trad...

AI Technical Summary

Problems solved by technology

However, the SoC chip integrated encryption and decryption algorithm in the prior art uses the same key to encry

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