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Encryption and decryption method and system for removable storage medium

A mobile storage medium, encryption and decryption technology, applied in the direction of instruments, electrical digital data processing, digital data protection, etc., can solve the problems of leaking secrets, easy loss of equipment, data loss of removable storage media, etc., to achieve simple interface relationship and strengthen security performance, guaranteed usability

Active Publication Date: 2019-12-03
湖南麒麟信安科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small size and easy to carry are the advantages of this type of device, but it also brings the disadvantage that this type of device is easy to lose. If the files stored in this type of device are not encrypted by encryption means, it is easy to cause leaks and exist. Data loss in removable storage media due to viruses and other reasons during use

Method used

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  • Encryption and decryption method and system for removable storage medium
  • Encryption and decryption method and system for removable storage medium
  • Encryption and decryption method and system for removable storage medium

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Embodiment Construction

[0040] In the following, the USB disk is taken as an example of the removable storage medium, and the encryption and decryption method and system for the removable storage medium of the present invention are further described in detail. Undoubtedly, the method and system for encrypting and decrypting removable storage media of the present invention can also be applied to various types of removable storage media other than USB disks, so details will not be repeated here. The present invention is directed to the method and system for encryption and decryption of removable storage media. A data encryption and decryption client is pre-deployed on computer equipment, and the following related functions are all realized through the data encryption and decryption client. It should be noted that the data encryption and decryption client is only a functional program deployed on computer equipment, and its specific implementation can be implemented in various ways, such as the way of usi...

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Abstract

The invention discloses an encryption and decryption method and system for a removable storage medium. The method comprises the following steps: writing a specified encryption and decryption algorithm, a hash algorithm, encryption block equipment offset, a key hash value and a key ciphertext position into a specified position of a mobile storage medium to form an encryption information head, formatting an encryption block storage space after the encryption block equipment offset position, and mounting the encryption block storage space of the mobile storage medium; when the movable storage medium is inserted into a computer, indicating that user password authentication needs to be performed, and performing mounting only when authentication is passed. The key following equipment is adopted,the flexibility and universality of the equipment are improved by adopting a mode of separating encryption and decryption from a file system and adopting a multi-stage encryption mode, the method hasthe advantages of high reliability and high safety, and meanwhile, the read-write performance of the equipment is not reduced as much as possible on the premise of ensuring the safety of data.

Description

technical field [0001] The invention relates to data storage security technology, in particular to an encryption and decryption method and system for removable storage media. Background technique [0002] Data is the core asset in the storage system, and its security is of paramount importance. Removable storage media is a type of storage electronic device that is small in size and easy to carry. At present, most of them are commonly used for data transfer and temporary storage, and are currently the most mainstream mobile storage devices. Small size and easy to carry are the advantages of this type of device, but it also brings the disadvantage that this type of device is easy to lose. If the files stored in this type of device are not encrypted by encryption means, it is easy to cause leaks and exist. Data loss in removable storage media due to viruses and other reasons during use. Contents of the invention [0003] The technical problem to be solved by the present inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/60G06F21/62G06F21/78G06F21/79
CPCG06F21/602G06F21/6218G06F21/78G06F21/79
Inventor 卿兵申锟铠彭勇蒋李李广辉
Owner 湖南麒麟信安科技股份有限公司
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