Memory data protection method and system

Abstract

The invention provides a memory data protection method and system. The memory data protection method comprises the steps that when memory data to be protected is written into a target page, a page identifier of the target page is obtained; according to the page identifier, it is known that the target page is a sensitive page, a shadow page dual to the target page is allocated for the memory data to be protected; honey pot type processing is conducted on the memory data to be protected, false data of the memory data to be protected is determined and is written into the shadow page; page table item information of the sensitive page is transferred to the shadow page from an initial page, wherein the initial page is used for storing page table item information of the target page, and the shadow page is used for storing the page table item information of the sensitive page and the shadow page. The system comprises a user interface, a page identification unit and a page inversion unit. Protection of memory data is achieved by constructing the shadow page to hide the memory data to be protected, the operation is simple, quick and convenient, and the overall performance of the system is not affected.

Description

technical field [0001] The invention relates to the technical field of safe storage of computer data, in particular to a memory data protection method and system. Background technique [0002] With the development of science and technology, more and more data stored in computer memory are becoming more and more important, and the memory is subject to more and more attacks. Therefore, it is necessary to protect its confidentiality and prevent information leakage. At present, a better method for protecting memory data is memory encryption and decryption, that is, encrypting and storing memory data when the processor does not access the data, and decrypting the data when the processor accesses the data. In this way, the time that memory data exists in memory in plain text can be shortened. [0003] Existing RamCrypt technologies such as Figure 8 As shown, the design idea is as follows: the memory data only exists in the memory in the form of plain text before and after the pr...

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Problems solved by technology

[0004] In order to solve the problem of excessive system performance overhead and lower system performance in existing memory data protection methods, the present invention provides a memory data protection method and system

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