Data underlay encryption method based on disk drive in cloud computing environment

Abstract

The invention discloses a data encryption underlay encryption method based on disk drive in the cloud computing environment, comprising the following steps of: (1) granting a page allocated by a memory space to an equipment virtual machine on which a rear-end drive is positioned through a front-end drive by using a grant table; (2) encrypting data in a buffer area by a front end; (3) placing a writing request of a disk into an annular buffer area shared with the rear-end drive and informing the writing request of the rear-end drive through an event channel; (4) after the rear-end drive is awaken, reading a writing disk request in the shared buffer area and mapping the granted page corresponding to the grant table to the own memory space to generate a real disk access request; and (5) after the disk request is finished, releasing the map by the rear-end drive, placing a response in the shared buffer area and simultaneously awaking the front-end drive through the event channel. The invention can ensure that important data stored by the user in a cloud memory are cipher texts and can still provide safety guarantee for private data of the user even if a storage cell is completely exposed.

Description

technical field [0001] The invention relates to a data bottom encryption method based on a disk drive in a cloud computing environment. Background technique [0002] Cloud computing is an Internet-oriented distributed computing service. Cloud storage is a new concept extended and developed from the concept of cloud computing. It refers to the collection of a large number of different types of storage devices in the network through application software through functions such as cluster applications, grid technology, or distributed file systems. A system that works together to provide data storage and business access functions to the outside world. When the core of cloud computing system computing and processing is the storage and management of large amounts of data, a large number of storage devices need to be configured in the cloud computing system, then the cloud computing system will be transformed into a cloud storage system, so cloud storage is a data storage and mana...

AI Technical Summary

Problems solved by technology

[0006] Although the user-level encryption tool has a lot of options, it increases the user's operational burden, delays the user's normal data access process, and the user will feel very cumbersome and cumbersome.

[0007] The encrypted file system is indeed transparent to the user, but it has special requirements for the operating system used by the user. Not all operating systems support this encrypted file system, which will limit the user's freedom of use and give User inconvenience

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