U disk encryption method

An implementation method and disk technology, applied in static memory, read-only memory, instruments, etc., can solve the problems of reducing equipment utilization, indiscriminate, waste resources, etc., to save equipment use costs, reduce overhead, and protect important data. Effect
CN101877246AInactive Publication Date: 2010-11-03许燕
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
许燕
Publication Date
2010-11-03
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Claims

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