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Data encryption method and system

A data encryption and file system technology, applied in the field of information security, can solve the problems of large data management granularity, low data security, and inability to achieve separate file management.

Active Publication Date: 2019-10-22
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the security of data in the NAS system is low, and the granularity of data management is too large to realize the management of individual files in the file system, the present invention provides a data encryption method and system

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  • Data encryption method and system
  • Data encryption method and system

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Embodiment Construction

[0086] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0087] Please refer to figure 1 , which shows a schematic diagram of a data encryption implementation environment 00 involved in various embodiments of the present invention. The data encryption implementation environment 00 includes: a data encryption system 100 and a key management server (English: Key Management Server, referred to as: KMS) 200, the data encryption system 100 can be a NAS system, and the key management server 200 can provide data encryption system 100 Key management, and the key management server 200 can adopt security measures such as proprietary tamper-resistant hardware, certificates, data encryption, transmission encryption, and key self-destruction to ensure the security of the key.

[0088] The data encryptio...

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Abstract

The invention discloses a data encryption method and system, belonging to the technical field of information security. The NAS system is used for network-attached storage, and the NAS system includes multiple file systems. The method includes: obtaining a file system encryption key of a first file system; generating a file key serial number for a first file in the first file system; according to the A file system encryption key of a file system and a file key serial number of the first file generate a file encryption key for the first file; when a write instruction to the first file is detected, the file encryption key of the first file is The key encrypts the written data to obtain the ciphertext corresponding to the written data. The present invention can solve the problem that the data in the same file system are stored with the same key, the security of the data is low, and the management granularity of the data is too large, so that the management of individual files in the file system cannot be realized, and the effect of file-level data encryption is achieved. Improve data security and realize the management of individual files.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a data encryption method and system. Background technique [0002] With the development of Internet information technology, the security of information storage is becoming more and more important. Take the Network Attached Storage (English: Network Attached Storage, referred to as: NAS) system as an example, NAS can usually include multiple file systems (English: FileSystem, referred to as: FS), and the data in each FS is encrypted with the same key. And the NAS system usually uses a symmetric encryption algorithm to encrypt data. In the symmetric encryption algorithm, the same key is used for data encryption and decryption. [0003] When a file system is created on the NAS system, the NAS system automatically assigns the file system key identifier (English: FileSystem Key IDentity, FS_Key_ID) for the file system. At the same time, the NAS system applies for the cor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L9/08
CPCH04L9/08H04L9/40
Inventor 刘遵一
Owner HUAWEI TECH CO LTD
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