U disk encryption method

Abstract

The invention provides a U disk (mobile hard disk) encryption method which monitors the USB Hey state in real time, carries out identity verification and obtains a key by authorized USB Key, wherein the protected U disk (mobile hard disk) is divided into a protective area and a non-protective area; the protective area is mapped into a virtual disk when the authorized verification is passed, data wrote into the disk is encrypted and the data read from the disk is decrypted; the non-protective area is still used as a common U disk (mobile hard disk). When the USB Key does not exist, the protective area cannot be accessed. The data stored in the protective area of the U disk (mobile hard disk) is encrypted forever, and is automatically decrypted in a memory when being used by a user. The invention supports the U disks (mobile hard disks) and file systems of all types, does not change the use habit of conventional data and the action of application programs of users, and does not require the users to buy new U disk (mobile hard disk) equipment.

Description

Technical field [0001] The invention relates to a method for realizing encrypted U disk (mobile hard disk), which mainly realizes the automatic encryption and decryption protection of user U disk (mobile hard disk) data. Enable users to achieve automatic encryption and decryption of U disk (mobile hard disk) data without adding new system hardware facilities and changing traditional data usage habits, improving information security and preventing information leakage, while retaining U disk (mobile hard disk) Hard disk) data exchange and sharing features, without increasing the user's cost and burden to achieve "one disk dual-use". This method obtains the key from the USB Key and performs identity authentication, and uses virtual disk technology to realize real-time transparent encryption and decryption of data; this method divides the protected data area on the U disk (mobile hard disk), which is invisible to the user. When the Key exists, use the virtual disk technology to m...

AI Technical Summary

Problems solved by technology

Users have to buy a new U disk or mobile hard disk box. Old devices are not supported, and the cost for users is too high

[0005] 2: All data on the U disk (mobile hard disk) is encrypted without any distinction

As a result, U disk (mobile hard disk) can no longer share data conveniently, which reduces the utilization rate of equipment and wastes a lot of resources at the same time

[0006] 3: Data is encrypted at the chip level of the hard disk. All data on the hard disk is encrypted. Once the hard disk is damaged or malfunctions, it cannot be sent to a third party for data recovery.

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