CN102521167B

CN102521167B - USB (universal serial bus) electronic information anti-disclosure memory device and method

Info

Publication number: CN102521167B
Application number: CN201110423930.4A
Authority: CN
Inventors: 张勇
Original assignee: XI'AN ANGELLTECH CO Ltd
Current assignee: Zhang Yong
Priority date: 2011-12-18
Filing date: 2011-12-18
Publication date: 2015-07-08
Anticipated expiration: 2031-12-18
Also published as: CN102521167A

Abstract

A USB (universal serial bus) electronic information anti-disclosure memory device comprises a microprocessor, a volatile memory, an internal power source, a USB communication interface and a manual switch. The memory device provides a safer memory space for local temporary data, temporary electronic information stored on the memory device can be truly unrecoverable, and the memory device is convenient to carry and adopts safer memory media, so that disclosure of secret information can be avoided, and external information can be prevented from infiltrating into a secret system by means of safe clearing during cross use in a non-secret environment and a secret environment.

Description

USB electronic information anti-divulge a secret memory device and method

Technical field

The present invention relates to the anti-scheme of divulging a secret of electronic information, especially anti-the divulging a secret of electronic information provides safe storage space, belongs to field of computer information security.

Background technology

Electronic information refers to what electronic equipments such as utilizing computing machine generated, the fileinfo record of the word stored in digital form, icon, image, audio frequency, video etc.Electronic information, as a kind of information resources, is the true record of the activities such as enterprise's production, technology, scientific research and operation, is the intangible asset with enterprise's synchronized development, plays an important role in each side such as business administrations.

In electronic information security management process, especially under classified information centralized management environment, bulk information or temporary information are kept at this locality or external unit, and these equipment are all non-volatile memory mediums, are all can preserve for a long time and recoverable medium.Reach electronic information this locality not divulge a secret, must provide the storage space of a safer electronic information, the electronic information that it is preserved is irrecoverable after removing.

USB flash disk is the portable equipment of a kind of common electron communication and preservation, but the storage medium of USB flash disk is non-volatile, and the electronic information that it is preserved has the quite long holding time.Although the technology such as encryption, certification, removing can be adopted, as a kind of non-volatile media, utilize USB flash disk to carry out alternating electron information and appoint the risk that so can there is leakage information, all there is stronger restorability in theory.Therefore to use in the urgent need to a kind of can being easy to carry, information can not be preserved for a long time and can the memory device of Safety Sweep, for anti-the divulging a secret of electronic information provides safe storage space.

Summary of the invention

The object of this invention is to provide a kind of USB electronic information anti-divulge a secret memory device and method, realize the electronic information be kept in described memory device and remove rear irrecoverable.

The anti-memory device of divulging a secret of USB electronic information of the present invention comprises microprocessor, volatile memory, built-in power, usb communication interface and hand switch.Described microprocessor is connected with volatile memory, built-in power, usb communication interface and hand switch respectively, described built-in power is connected with microprocessor with volatile memory, usb communication interface respectively, and described volatile memory is connected with usb communication interface.

Described volatile memory adopts volatile storage medium to preserve electronic information, for electronic information safety AC and local temporary space is provided, after power down, the not predictable state of one will be lost or be placed in information;

Described microprocessor, performs electronic information security removing work, adopts clear 0 to cover and writes, and the means such as replacement are similar to being placed in in volatile storage medium asemantic state of dispatching from the factory;

Described built-in power when USB interface do not access or power down, provide power supply to complete Safety Sweep work to microprocessor; Described built-in power also provides power supply to volatile storage medium, retains electronic information do not lose for this storage medium at certain hour;

Described USB interface, for volatile storage medium externally provides input, output interface circuit.Described USB interface also provides charging circuit to built-in power, and provides external power supply interface to volatile storage medium;

Described hand switch, by providing external pushbutton switch circuit, completes manual safety removing work alternately with microprocessor.

The anti-method of divulging a secret that the present invention also provides described USB electronic information to prevent divulging a secret memory device, described method comprises step:

Detect described memory device and whether meet electronic information cleared condition, it is low that described electronic information cleared condition comprises the arrival of timing checkout time, manually removing and internal battery electricity;

If reach electronic information cleared condition, the electronic information in described memory device in Volatile media is eliminated;

Described memory device power down, the electronic information in this memory device in Volatile media can be lost.

Beneficial effect of the present invention is: the storage space providing a safer local ephemeral data, and it is irrecoverable that the temporary electronic information that described memory device is preserved can reach truly; This memory device is easy to carry, and adopts safer storage medium, by Safety Sweep in non-concerning security matters environment and concerning security matters environment cross-reference process, both can avoid the leakage of classified information, external information also can be avoided to infiltrate through concerning security matters system.

Accompanying drawing explanation

Fig. 1 is the anti-memory device general structure schematic diagram of divulging a secret of USB electronic information of the present invention;

Fig. 2 be USB electronic information of the present invention prevent divulging a secret electronic information in memory device store status and remove trigger condition.

Embodiment

Below in conjunction with accompanying drawing, the present invention will be further described.

As shown in Figure 1, according to the anti-memory device of divulging a secret of USB electronic information of the present invention, comprise the microprocessor 1 for controlling electronic information storage, transmission and Safety Sweep work, for the storer 2 of electronic information storage, built-in power 3, pushbutton switch 4, and external power supply and data input, the USB interface 5 of output interface for providing.Wherein, described microprocessor 1 is connected with storer 2, built-in power 3, manual push button switch 4 and USB interface 5 respectively; Storer 2 adopts volatile storage medium, and after power down, the not predictable state of one will be lost or be placed in information; When accessing without external power source, described built-in power 4 is respectively microprocessor 1 and storer 2 provides power supply to be provided with Safety Sweep work.

Figure 2 shows that the store status of electronic information in present device and trigger condition thereof, when not accessing the USB interface of charged or built-in power without electricity, a kind of unpredictable state can be lost or be placed in the electronic information be kept in volatile storage medium, thus strengthen the difficulty recovering electronic information.It is low that the trigger condition that electronic information is removed comprises the arrival of timing checkout time, manually removing and internal battery electricity, and when arbitrary condition reaches, electronic information is automatically cleared or returns to factory state.

Claims

1. USB electronic information is prevented divulging a secret an anti-method of divulging a secret for memory device, it is characterized in that: described memory device comprises microprocessor, volatile memory, built-in power, usb communication interface and hand switch;

Described microprocessor is connected with volatile memory, built-in power, usb communication interface and hand switch respectively, described built-in power is connected with microprocessor with volatile memory, usb communication interface respectively, and described volatile memory is connected with usb communication interface;

Described volatile memory adopts Volatile media to preserve electronic information, and after power down or electronic information cleared condition reach, the electronic information in described Volatile media can lose or be eliminated;

Described USB electronic information prevent the divulging a secret anti-method of divulging a secret of memory device comprises the following steps:

(1) detect described memory device and whether meet electronic information cleared condition;

(2) if reach electronic information cleared condition, the electronic information in described memory device in Volatile media is eliminated, and it is low that described electronic information cleared condition comprises the arrival of timing checkout time, manually removing and internal battery electricity;

(3) described memory device power down, the electronic information in memory device in Volatile media can be lost.