Memory access control method and system and storage device controller

Abstract

The invention discloses a memory access control method and system and a storage device controller. The memory access control method comprises the steps: obtaining a to-be-written effective data blockand a storage address of the effective data block based on a received data writing request; for the valid data block to be written, generating corresponding message authentication data, generating astorage address of the message authentication data in the first storage device, and caching the message authentication data and the storage address of the message authentication data in the first storage device to the second storage device; writing the valid data block into the first storage device based on the storage address of the valid data block; and in response to a preset triggering condition, stopping the memory access request within a preset duration, and writing the message authentication data cached in the second storage device into the first storage device according to a storage address stored in the second storage device within the preset duration. According to the scheme, data integrity verification can be carried out on the valid data in the storage device at a relatively low storage cost.

Description

technical field [0001] The embodiments of this specification relate to the field of computer technology, and in particular, to a memory access control method, system, and storage device controller. Background technique [0002] In a computer system, even if the data in the storage device is encrypted, in some cases hackers can still invade the data in the storage device through malicious programs. For example, the memory used by the virtual machine is provided by the host machine, so although the data in the memory is encrypted, malicious programs on the host machine can modify the encrypted data through methods such as ciphertext collision attacks. [0003] However, in view of the above problems, there is currently no effective data protection mechanism for the data stored in the storage device. Contents of the invention [0004] In view of this, the embodiments of this specification provide a memory access control method, system, and storage device controller, which can...

AI Technical Summary

Problems solved by technology

For example, the memory used by the virtual machine is provided by the host, so although the data in the memory is encrypted, malicious programs on the host can modify the encrypted data through methods such as ciphertext collision attacks

[0003] However, in view of the above problems, there is currently no effective data protection mechanism for the data stored in the storage device

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