Storing device and method of address scrambling

Abstract

The invention provides a storing device and method of address scrambling. The device comprises a key generation module used for generating a random key, a nonvolatile key storage used for storing therandom key generated by the key generation module, a key reading module used for automatically reading the random key stored in the nonvolatile key storage and saving the random key, a storage controlmodule used for outputting an address without scrambling in the time sequence control logic stored in a generated read-write chip to an address scrambling algorithm module, and the address scramblingalgorithm module connected to the storage control module, the key reading module, and the storage respectively and used for conducting scrambling processing on the address without scrambling output by the storage control module according to the random key read by the key reading module to form a scrambling address and sending the scrambling address to the storage. By means of the device and method, scrambling processing of a data address can be achieved, meanwhile the efficiency of a read-write storage is not influenced, and safe and high-efficiency read-write data is guaranteed.

Description

technical field [0001] The invention relates to the technical field of embedded systems, in particular to an address scrambling storage device and method. Background technique [0002] With the rapid development of the system on chip (SoC: System on Chip), the application of the memory is more and more extensive. Among them, the main function of the memory is to store programs and various data, and can complete the program at high speed and automatically during the operation of the system. or data access. A memory is a device with a "memory" function, which uses a physical device with two stable states to store information. However, the data stored in the memory is easy to be stolen without encryption, which makes it impossible to protect important data such as developed systems, programs, and instruction programs. [0003] However, the current method of protecting data is to encrypt it before storing it. In this way, even if the data is stolen by hackers, it is difficult...

AI Technical Summary

Problems solved by technology

Although the above process can achieve the purpose of data protection, current encryption technologies such as AES (Advanced Encryption Standard: Advanced Encryption Standard), DES (Data Encryption Standard: Data Encryption Standard) and other encryption and decryption algorithms will greatly reduce the performance of the system chip As well as the efficiency of reading and writing memory, the problem that it cannot be used on chips with extremely high performance requirements

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