CN110427787A

CN110427787A - Hard disk and its data protecting device

Info

Publication number: CN110427787A
Application number: CN201910603248.XA
Authority: CN
Inventors: 林琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2019-11-08

Abstract

The present embodiments relate to hard disk secure technical field, a kind of hard disk and its data protecting device are disclosed.The device includes: paster, for covering the PCBA of hard disk and being bonded with PCBA, at least a pair of conductive portion is provided on paster, two conductive parts in conductive part a pair of conductive portion are contacted with the different solder joints on PCBA respectively, are electrically connected between two in a pair of conductive portion conductive part by conducting wire；Tamper control chip is set on the PCBA of hard disk, tamper control chip is electrically connected with the solder joint contacted with conductive part on PCBA respectively by conducting wire, tamper controls chip, solder joint and two conductive parts and constitutes a conductive loop, tamper control chip is used to detect the current resistive value of conductive loop, the initial resistivity value saved after resistance value and hard disk assembling is compared, sends alarm signal to main control chip when current resistive value and initial resistivity value are inconsistent.The embodiment of the present invention, which is realized, protects hard disc data by physics mode.

Description

Hard disk and data protection device thereof

Technical Field

The embodiment of the invention relates to the technical field of hard disk security, in particular to a hard disk and a data protection device thereof.

Background

At present, the encrypted hard disks (SEDs) are generally used in units and organizations with higher requirements on data security, such as military affairs, government, security units, scientific research institutes, and the like.

In the existing encryption mode, the encryption chip built in the hard disk is generally used for realizing the encryption operation of writing data into the hard disk and the decryption operation of data when reading the data from the hard disk, and the mode cannot realize physical encryption.

Disclosure of Invention

In view of the above problems, embodiments of the present invention provide a hard disk and a data protection apparatus thereof, which overcome or at least partially solve the above problems.

According to an aspect of an embodiment of the present invention, there is provided a hard disk data protection apparatus, including:

the sticker is used for covering the PCBA of the hard disk and attaching to the PCBA, at least one pair of conductive parts are arranged at the bottom of the sticker or penetrating through the whole sticker, two conductive parts of the pair of conductive parts are respectively contacted with different welding spots on the PCBA, an accommodating space is arranged inside the sticker, a wire is arranged in the accommodating space, and the two conductive parts of the pair of conductive parts are electrically connected through the wire;

the anti-disassembly control chip is arranged on a PCBA of the hard disk, the anti-disassembly control chip is respectively and electrically connected with welding spots on the PCBA, which are contacted with the conductive parts, through wires, the anti-disassembly control chip, the welding spots and the two conductive parts form a conductive loop, and the anti-disassembly control chip is also used for being electrically connected with a main control chip of the hard disk; wherein,

the anti-dismantling control chip is used for detecting the current resistance value of the conductive loop, comparing the resistance value with an initial resistance value stored after the hard disk is assembled, and sending an alarm signal to the main control chip when the current resistance value is inconsistent with the initial resistance value.

In an optional mode, the sticker includes attached layer and superficial layer, attached layer with form between the superficial layer accommodation space, attached layer with the PCBA laminating.

In an optional mode, the conductive part is a conductive contact or a metal screw hole, and when the conductive part is the metal screw hole, the sticker is fixed to the PCBA by a screw or a bolt.

In an optional mode, the sticker is quadrilateral, and the conductive part is provided with two pairs of conductive parts which are respectively located at four corners of the sticker.

In an optional mode, the tamper control chip is further configured to detect a connection state between the tamper control chip and the main control chip, and send an alarm signal to the main control chip when detecting that the tamper control chip is disconnected from the main control chip.

In an optional manner, the apparatus further includes a main control chip disposed on the PCBA, and the main control chip is electrically connected to the tamper control chip, and is configured to take a protection measure for the data of the hard disk after receiving the alarm signal.

In an alternative form, the protective measures include: forbidding the read-write function of the hard disk, or destroying the data in the hard disk.

In an alternative form, the sticker is an opaque sticker.

According to another aspect of the embodiments of the present invention, there is provided a hard disk, including at least:

the hard disk data protection device as described above, which is attached to the PCBA;

and the main control chip is electrically connected with the hard disk data protection device.

The embodiment of the invention arranges the paster, the paster is internally designed with the anti-dismantling control circuit consisting of the anti-dismantling control chip, the conductive part and the lead, the conductive part is connected with the welding spot on the PCBA, and the anti-dismantling control chip and the conducting wire form a conductive loop, after the device is arranged on the hard disk, the anti-dismounting control chip measures the initial resistance value of the conductive loop and stores the initial resistance value as the baseline resistance value, the anti-dismounting control chip continuously monitors the resistance value of the conductive loop and compares the resistance value with the baseline resistance value in the use process of the hard disk, if the paster is damaged, the conductive part and the welding spot on the PCBA are not connected any more, so that the resistance value on the conductive circuit is abnormally changed, for example, the anti-disassembly control chip sends an alarm to the main control chip of the hard disk and starts a protection measure for the data of the hard disk, so that the data in the hard disk is protected in a physical mode, and an illegal user is prevented from stealing the data of the hard disk through welding spots on the PCBA.

The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a block diagram illustrating a partial structure of a hard disk data protection apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a hard disk data protection device provided by an embodiment of the present invention;

FIG. 3 shows a schematic plan view of a sticker in an embodiment of the invention;

fig. 4 is a schematic structural diagram illustrating a hard disk data protection device according to an embodiment of the present invention mounted on a hard disk;

FIG. 5 shows a schematic plan view of a PCBA in an embodiment of the invention;

FIG. 6 shows a schematic diagram of a conductive loop in an embodiment of the invention;

fig. 7 shows a block diagram of a hard disk according to an embodiment of the present invention.

Reference numerals:

hard disk data protection apparatus 100; a sticker 11; the accommodating space 111; an attachment layer 112; a surface layer 113; a conductive portion 12; a lead wire 13; a tamper control chip 14; a hard disk 200; PCBA 21; a solder joint 211; a main control chip 22; a screw 300.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Fig. 1 shows a block diagram of a hard disk data protection device according to an embodiment of the present invention, and fig. 2 shows a cross-sectional view of the hard disk data protection device according to the embodiment of the present invention. As shown in fig. 1 and 2, the device 100 includes a sticker 11, a conductive part 12, a wire 13, and a tamper control chip 14. The conductive portion 12 is disposed on the bottom of the seal 11 or penetrates the entire seal 11, and contacts a pad 211 on an assembled Printed Circuit Board (PCBA) 21. The anti-disassembly control chip 14 is arranged on the PCBA 21 of the hard disk. The sticker 11 is provided with an accommodating space 111 inside, and the wire 13 is provided in the accommodating space 111. The conductive portion 12 constitutes a conductive loop through the wire 13 and the pad 211 on the PCBA 21 and the tamper control chip 14. The tamper control chip 14 is configured to detect a current resistance value of the conductive loop, compare the current resistance value with an initial resistance value stored after the hard disk is assembled, and send an alarm signal to the main control chip 22 when the current resistance value is inconsistent with the initial resistance value.

The seal paper 11 is used to cover the PCBA 21 of the hard disk and is attached to the PCBA 21. The sticker 11 includes an attachment layer 112 and a surface layer 113, a housing space 111 is formed between the attachment layer 112 and the surface layer 113, and the attachment layer 112 is attached to the PCBA 21. The sticker 11 is an opaque sticker. The sticker 11 may be designed in different shapes, such as a quadrangle, a triangle, a circle, etc., as desired. If the PCBA of the hard disk is a square, the seal 11 is preferably designed to be a square according to the shape of the PCBA 21. As shown in fig. 3, the sticker 11 in this embodiment is in the shape of a convex quadrangle.

It will be appreciated that fig. 2 is merely a schematic illustration, wherein the attachment layer 112 is not attached to the PCBA 21 in fig. 2 due to component representation requirements. In an embodiment of the present invention, the attachment layer 112 is attached to the PCBA 21.

At least one pair of conductive parts 12 is provided, two conductive parts 12 of the pair of conductive parts 12 are respectively in contact with different pads 211 on the PCBA 21, and the conductive parts 12 are electrically connected by a wire 13. The conductive portions 12 are provided in two pairs in the present embodiment, respectively located at four corners of the quadrangular sticker 11. Generally, when the seal paper 11 is destroyed, the conductive parts 12 are provided at the four corners of the seal paper 11 first, so that the seal paper 11 can be detected when it is destroyed first, and the hard disk data can be protected more effectively. The conductive part 12 is a conductive contact or a metal screw hole, when the conductive part 12 is a conductive contact, the conductive contact is in close contact with the welding spot 211 on the PCBA 21, and the conductive contact is tightly close to the welding spot 211 on the PCBA 21 through the paster 11 at the periphery of the conductive contact; when the conductive portion 12 is a metal screw hole, the seal 11 is fixed to the PCBA 21 by a screw or a bolt. In this embodiment, as shown in fig. 4, the conductive portion 12 is fixed by being brought into contact with a pad 211 on the hard disk PCBA 21 by a screw 300. The screw fixing mode can achieve a good conductive effect, and the conductive part 12 is not easy to be separated from the welding point 211 on the PCBA 21.

Specifically, as shown in fig. 3, the conductive portion A, B, C, D is a conductive contact on the sticker 11, and may be designed as a conductive screw hole, and each of a-B, C-D is a conductive wire 13 connecting two points. There is a conductive path between a-B and a constant resistance value, as does C-D. A. B, C, D and the circuit between them are integrated in the sticker 11, which integrally constitutes a tamper-evident sticker 11 with tamper-evident function. The anti-tamper sticker 11 may be a flexible sticker or a rigid sticker made of a rigid material.

The anti-disassembly control chip 14 is respectively electrically connected with the welding spot 211 on the PCBA 21, which is contacted with the conductive part 12, through the lead 13, the anti-disassembly control chip 14, the welding spot 211 on the PCBA 21 and the two conductive parts 12 form a conductive loop, and the anti-disassembly control chip 14 is also used for being electrically connected with the main control chip 22 of the hard disk 200; the tamper control chip 14 is configured to detect a current resistance value of the conductive loop, compare the resistance value with an initial resistance value stored after the hard disk 200 is assembled, and send an alarm signal to the main control chip 22 when the current resistance value is inconsistent with the initial resistance value.

As shown in fig. 5, in the present embodiment, the tamper control chip 14 is electrically connected to the two pairs of conductive parts 12 through the wires 13 to form two conductive loops. The two conductive loops can realize safer data protection, and when any one conductive loop is disconnected, an alarm is triggered. The welding points a, b, c and d are conductive contact points and can also be designed into screw holes, and the welding points a, b, c and d are respectively connected with the anti-disassembly control chip through wires with fixed resistance values.

In assembly, the sticker 11 is secured to the PCBA 21 with adhesive and secured to the platter of the hard disk 200 with screws at position A, B, C, D shown in FIG. 3, along with a, b, c, d on the PCBA 21 shown in FIG. 5. After the sticker 11, the PCBA 21 and the hard disk 200 are assembled, A, B, C, D on the sticker 11 is communicated with a, B, C and D on the PCBA 21 to respectively form two conductive loops A-a-B-B and C-C-D-D, and the two conductive loops are connected to the anti-detachment control chip 14.

In some embodiments, the tamper control chip 14 is further configured to detect a connection status with the main control chip 22, and send an alarm signal to the main control chip 22 when detecting that the main control chip 22 is disconnected. If the illegal user disconnects the anti-dismantling control chip 14 from the main control chip 22, the alarm is detected and triggered, so that the illegal user is prevented from generating the alarm when tearing the sticker 11 in a manner of disconnecting the anti-dismantling control chip 14 from the main control chip 22, and the protection effect is further enhanced.

In the embodiment of the present invention, the alarm may include sending an alarm sound in addition to sending an alarm signal (i.e. a signal for prompting that the sticker is removed) to the main control chip, and the alarm sound may be implemented by adding a speaker or a loudspeaker or the like electrically connected to the removal prevention control chip 14 to the apparatus 100.

In some embodiments, the apparatus 100 further includes a main control chip 22 disposed on the PCBA 21, which is electrically connected to the tamper control chip 14 and is configured to take a protection measure for the data of the hard disk 200 after receiving the alarm signal. The protective measures include: forbidding the read-write function of the hard disk, or destroying the data in the hard disk. At this time, the main control chip 22 is a part of the apparatus 100. It is understood that the main control chip 22 can also be a main control chip directly used on the hard disk 200, thereby reducing the cost. The main control chip 22 can implement any method in the prior art to take protection measures on the data of the hard disk 200, which is not limited by the present invention.

The components in the device are all directly powered by the power supply on the hard disk 200, for example, the power supply on the hard disk 200 is used for supplying power to the anti-disassembly control chip 14 and the main control chip 22.

The embodiment of the invention adds the data protection circuit on the sticker, so that the sticker really has the anti-disassembly function, when the encrypted sticker is torn or the screw is unscrewed, the abnormality of the data protection circuit is detected, an alarm is given and the data in the hard disk can be automatically destroyed, and the data safety in the hard disk is really protected from physical aspect.

Fig. 6 shows a block diagram of a hard disk according to an embodiment of the present invention, and as shown in fig. 6, the hard disk 200 at least includes: in the hard disk data protection device 100 and the main control chip 22 according to the above embodiments, the hard disk data protection device 100 is attached to the PCBA 21, and the main control chip 22 is electrically connected to the hard disk data protection device 100.

In the embodiment of the invention, the sticker is arranged on the PCBA of the hard disk, the anti-dismantling control circuit consisting of the anti-dismantling control chip, the conductive part and the lead is designed in the sticker, the conductive part is connected with the welding spot on the PCBA, and the anti-dismantling control chip and the conducting wire form a conductive loop, after the device is arranged on the hard disk, the anti-dismounting control chip measures the initial resistance value of the conductive loop and stores the initial resistance value as the baseline resistance value, the anti-dismounting control chip continuously monitors the resistance value of the conductive loop and compares the resistance value with the baseline resistance value in the use process of the hard disk, if the paster is damaged, the conductive part and the welding spot on the PCBA are not connected any more, so that the resistance value on the conductive circuit is abnormally changed, for example, the anti-disassembly control chip sends an alarm to the main control chip of the hard disk and starts a protection measure for the data of the hard disk, so that the data in the hard disk is protected in a physical mode, and an illegal user is prevented from stealing the data of the hard disk through welding spots on the PCBA.

The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.

Claims

1. An apparatus for protecting data on a hard disk, the apparatus comprising:

2. The apparatus of claim 1, wherein the sticker comprises an attachment layer and a surface layer, the attachment layer and the surface layer forming the receiving space therebetween, the attachment layer being attached to the PCBA.

3. The apparatus of claim 1, wherein the conductive portion is a conductive contact or a metal screw hole, and when the conductive portion is a metal screw hole, the sticker is fixed to the PCBA by a screw or a bolt.

4. The device of claim 1, wherein the sticker is quadrilateral and the conductive portion is provided in two pairs, one at each corner of the sticker.

5. The device of claim 1, wherein the tamper control chip is further configured to detect a connection status between the tamper control chip and the main control chip, and send an alarm signal to the main control chip when detecting that the tamper control chip is disconnected from the main control chip.

6. The device of claim 1, further comprising a main control chip disposed on the PCBA and electrically connected to the tamper control chip, for taking protective measures for data of the hard disk after receiving the alarm signal.

7. The apparatus of claim 5 or 6, wherein the protective measures comprise: forbidding the read-write function of the hard disk, or destroying the data in the hard disk.

8. The apparatus of claim 1, wherein the sticker is an opaque sticker.

9. A hard disk, characterized in that the hard disk comprises at least:

the hard disk data protection device of any of claims 1-8, attached to the PCBA;