Nonvolatile memory safety protection method

Abstract

The invention discloses a nonvolatile memory safety protection method comprising the following steps: allowing a MPU module on a chip to receive a user read-write operation request on a nonvolatile memory when the chip is powered up, and carrying out identity identification of the read-write operation request; allowing the MPU module to intercept the read-write operation request if the read-write operation request is not a read-write operation request on local area codes by the local area authorized user, and interrupting the read-write operation request. The novel method can improve nonvolatile memory safety.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method for safety protection of non-volatile memory. Background technique [0002] With the rapid development of information attack technology, new challenges have been raised for the protection of information security. At present, we often face the solution of multi-manufacturer cooperation to design chips. In this case, the codes used by various manufacturers are finally placed on the same non-volatile storage medium, that is, the non-volatile memory. The user's code is distributed in the non-volatile memory according to the negotiated address, and the users in each area manage their own code and complete the corresponding design update or download work. All user codes run on the same chip to realize the corresponding functions, and one of the users adjusts the specific functions of other users according to the needs to complete the final application. [0003] The usual m...

AI Technical Summary

Problems solved by technology

This approach has the following disadvantages: cooperative users can easily read the binary code data of other users. Obviously, the codes of each manufacturer do not want to be stolen by other manufacturers. It can be seen that the security of non-volatile memory is low.

Images