CN111010357A - Data ferrying method and device based on electromagnetic radiation of Hard Disk Drive (HDD) - Google Patents
Data ferrying method and device based on electromagnetic radiation of Hard Disk Drive (HDD) Download PDFInfo
- Publication number
- CN111010357A CN111010357A CN202010155820.3A CN202010155820A CN111010357A CN 111010357 A CN111010357 A CN 111010357A CN 202010155820 A CN202010155820 A CN 202010155820A CN 111010357 A CN111010357 A CN 111010357A
- Authority
- CN
- China
- Prior art keywords
- data
- signal
- frame
- hard disk
- hdd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
Abstract
The invention provides a method and a device for data ferry based on HDD (hard disk drive) electromagnetic radiation, wherein the method comprises the following steps: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electromagnetic signal; the data transmitting terminal converts the amplified electromagnetic signal of the data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing the numbers 0 and 1 correspond to the frequencies respectivelyf 1Andf 2(ii) a Adding a lead code to the head of the physical frame for each frame of data; and the data receiving end receives the signal transmitted by the carrier wave, restores the signal and acquires the data.
Description
Technical Field
The invention relates to the field of data transmission, in particular to a data ferry method and a data ferry device based on electromagnetic radiation of a hard disk, and particularly relates to a method for realizing data ferry by utilizing the electromagnetic radiation of an HDD (hard disk drive) in a physically isolated computer environment.
Background
With the rapid development of computer technology, it has become a common operation to transmit data between two devices, and data transmission is performed between an internal network and an external network, and between a public network and a private network, which particularly needs to ensure the security of data transmission.
In some application scenarios, due to the risks of network attacks and the like, the requirement of security cannot be met by transmitting data between two devices or two networks through an IP network. In order to ensure data security, two devices or two networks can be physically isolated, and data can be transmitted between the two physically isolated devices or two networks by using a data ferrying transmission mode.
The traditional cross-network data exchange mode is an optical disk ferry. The information to be transmitted is recorded by the optical disk, then the mechanical arm is used for switching to the network at the other end to be exchanged, and then the storage is read, so that one-way transmission is completed. The method has the advantages of low speed, high packet loss rate and difficult security guarantee, and can seriously influence the normal development of the service in case of losing important data information. Meanwhile, because the data copying is completed manually, the copied content range is difficult to monitor, the compliance of the data is difficult to guarantee, whether the data is falsified or not can not be guaranteed, the copied data and the use flow can not be traced, and a person in charge can not be traced when a problem occurs.
A data ferry solution implemented by using electromagnetic radiation, light waves, sound waves and thermal principles also appears, but the existing data ferry solution is complex to implement, and has the problems of data packet loss, slow data transmission speed, high data restoration difficulty, risk of data leakage and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a data ferrying method and a data ferrying device based on electromagnetic radiation of a Hard Disk Drive (HDD), and the method and the device are used for solving the technical problems that in the prior art, a data ferrying solution is complex to implement, data packet loss exists, data transmission speed is slow, data restoration difficulty is high, and data leakage risks exist.
According to a first aspect of the present invention, there is provided a data ferry method based on HDD hard disk electromagnetic radiation, the method comprising the steps of:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electromagnetic signal;
step S102: the data transmitting terminal converts an amplified electromagnetic signal of data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing digital 0 and 1 correspond to frequencies respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending end executes the following method, including:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk tof 1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk tof 2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving end executes the following method, including:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
According to a second aspect of the present invention, there is provided a HDD hard disk electromagnetic radiation-based data ferry apparatus, the apparatus including:
a configuration module: the data transmission terminal and the data receiving terminal are both provided with HDD hard disks, and a magnetic head chip is configured on a magnetic head of the HDD hard disk and used for realizing the amplification of electromagnetic signals;
a data sending module: for converting the amplified electromagnetic signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the numbers 0 and 1 correspond to the frequencies, respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending module includes:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDDf 1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDDf 2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving module includes:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the data end display module is used for restoring the demodulated signals, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, and performing data end display, otherwise, giving up.
According to a third aspect of the present invention, there is provided a HDD hard disk electromagnetic radiation-based data ferry system, including:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are used for being stored by the memory and loaded and executed by the processor by the data ferry method based on the electromagnetic radiation of the HDD hard disk.
According to a fourth aspect of the present invention, there is provided a computer readable storage medium having a plurality of instructions stored therein; the instructions are used for loading and executing the data ferry method based on the electromagnetic radiation of the HDD hard disk by the processor.
According to the scheme of the invention, the data ferry of the physically isolated computer environment is realized by utilizing the electromagnetic radiation generated by the HDD hard disk during high-speed reading and writing, the realization is easy, the data transmission speed is high, the transmission is safe, the data is easy to restore, and the risk of data leakage is reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of a data ferry method based on HDD hard disk electromagnetic radiation according to one embodiment of the present invention;
FIG. 2 is a diagram of a work environment scenario for an arrangement according to an embodiment of the present invention;
fig. 3 is a flowchart of a method executed by a data transmitting end according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a modulation scheme according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a data frame format according to an embodiment of the present invention;
FIG. 6 is a flowchart of a method performed by a data receiving end according to an embodiment of the present invention;
FIG. 7 is a block diagram of a data ferry device based on electromagnetic radiation from a HDD hard disk according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First, a data ferry flow chart based on electromagnetic radiation of a HDD hard disk according to an embodiment of the present invention is described with reference to fig. 1. As shown in fig. 1, the method is applied to a physically isolated computer environment and comprises the following steps:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electromagnetic signal;
step S102: the data transmitting terminal converts an amplified electromagnetic signal of data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing digital 0 and 1 correspond to frequencies respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
A diagram of a work environment scenario for an arrangement according to an embodiment of the present invention is described below in conjunction with fig. 2. As shown in fig. 2:
under the control of an application program, the data transmitting end reads and writes the hard disk at a high speed through the hard disk, generates electromagnetic radiation, and carries out 2FSK digital modulation on an electromagnetic radiation signal. The data receiving end receives signals by using SDR equipment, and displays data to be sent of the data sending end on a system terminal of the data receiving end after signal demodulation and reduction.
Step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electromagnetic signal;
specifically, the data of the hard disk is stored on a disk full of magnetic substances, and the process of writing data in the HDD hard disk is a process of changing the magnetic pole of the magnetic substances of the HDD disk by an induction magnetic head; the process that the MR magnetic head senses signals through the change of the resistance value is adopted for reading data of the HDD hard disk, and the magnetic head plays a key role in the reading and writing processes of the HDD hard disk. A magnetic head chip is configured on a magnetic head of the HDD hard disk, and the magnetic head chip is used for amplifying electromagnetic signals generated by the HDD hard disk in the reading and writing processes.
Step S102: the data transmitting terminal converts an amplified electromagnetic signal of data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing digital 0 and 1 correspond to frequencies respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
the following describes an execution process of the data sending end of the present invention with reference to fig. 3, where fig. 3 is a flowchart of a data sending end execution method implemented by the present invention, and as shown in fig. 3, the data sending end includes:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk tof 1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk tof 2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Further, the step S3003: modulating the binary format signal into a 2FSK signal;
fig. 4 is a schematic diagram illustrating a modulation scheme according to an embodiment of the present invention. As shown in fig. 4:
the data transmitting terminal converts an amplified electromagnetic signal of data to be transmitted into a binary signal which can be identified by a computer, the signal needs to be modulated, a 2FSK modulation mode is adopted, and the modulation formula is as follows:
respectively corresponding 0 and 1 to two different frequenciesf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey digital information.
Further, the step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
a data frame format diagram according to an embodiment of the present invention is described with reference to fig. 5, as shown in fig. 5:
the first four bits of the data frame are lead codes and are used for marking the time sequence of the data frame, and data synchronization between the data sending end and the data receiving end can be achieved. The middle 12 bits of the data frame are the transmitted data information, and the data frame is also provided with a CRC check code.
Step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Referring to fig. 6, a method executed by a data receiving end is described, where fig. 6 is a flowchart of a method executed by the data receiving end according to an embodiment of the present invention, and as shown in fig. 6, the method includes:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
An embodiment of the present invention further provides a data ferry device based on HDD hard disk electromagnetic radiation, as shown in fig. 7, the device includes:
the device comprises:
a configuration module: the data transmission terminal and the data receiving terminal are both provided with HDD hard disks, and a magnetic head chip is configured on a magnetic head of the HDD hard disk and used for realizing the amplification of electromagnetic signals;
a data sending module: for converting the amplified electromagnetic signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the numbers 0 and 1 correspond to the frequencies, respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; for each frame numberAccording to the method, a lead code is added to the head of the physical frame;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
Further, the data sending module includes:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDDf 1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDDf 2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
Furthermore, the first four bits of the data frame are lead codes used for marking the time sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
Further, the data receiving module includes:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the data end display module is used for restoring the demodulated signals, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, and performing data end display, otherwise, giving up.
The embodiment of the invention further provides a system for data ferry based on HDD hard disk electromagnetic radiation, which comprises:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded and executed by the processor to perform the method for HDD hard disk electromagnetic radiation based data ferrying as described above.
The embodiment of the invention further provides a computer readable storage medium, wherein a plurality of instructions are stored in the storage medium; the instructions are used for loading and executing the method for data ferry based on the electromagnetic radiation of the HDD hard disk by the processor.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a physical machine Server, or a network cloud Server, etc., and needs to install a Windows or Windows Server operating system) to perform some steps of the method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. A data ferry method based on HDD hard disk electromagnetic radiation is applied to a physically isolated computer environment and is characterized by comprising the following steps:
step S101: arranging a working environment, and determining a data sending end and a data receiving end, wherein the data sending end and the data receiving end are both provided with an HDD (hard disk drive), and a magnetic head chip is configured on a magnetic head of the HDD and used for realizing the amplification of an electromagnetic signal;
step S102: the data transmitting terminal converts an amplified electromagnetic signal of data to be transmitted into a binary signal, modulates the binary signal into a 2FSK signal, and makes the binary signals representing digital 0 and 1 correspond to frequencies respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
step S103: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
2. The HDD hard disk electromagnetic radiation-based data ferry method according to claim 1, wherein the data sending end executes the following method, including:
step S3001: starting a data sending program of the data sending end;
step S3002: the HDD hard disk of the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
step S3003: modulating the binary format signal into a 2FSK signal;
step S3004: judging whether the current data frame data is full; if yes, go to step S3009; if not, go to step S3005;
step S3005: bit-wise reading a 2FSK signal;
step S3006: judging whether the read data represented by the 2FSK signal is 0; if yes, go to step S3007; if not, go to step S3008;
step S3007: adjusting the read-write frequency of HDD hard disk tof 1(ii) a The process advances to step S3010;
step S3008: adjusting the read-write frequency of HDD hard disk tof 2(ii) a The process advances to step S3010;
step S3009: adding a lead code at the head of the current frame, and sending the current frame to a data receiving end to realize the synchronization of the data sending end and the data receiving end; establishing a new data frame; step S3005 is entered;
step S3010: judging whether the data sending end finishes sending the data; if yes, go to step S3011; if not, go to step S3002;
step S3011: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
3. The HDD hard disk electromagnetic radiation-based data ferry method according to claim 1, wherein the first four bits of the data frame are preambles for marking a timing sequence of the data frame, so that data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
4. The HDD hard disk electromagnetic radiation-based data ferry method according to claim 1, wherein the data receiving end executes the following method, including:
step S601: starting a data receiving program of the data receiving terminal;
step S602: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
step S603: demodulating the received signal;
step S604: and restoring the demodulated signal, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, displaying the data at the data end, and giving up if not.
5. A data ferry device based on HDD hard disk electromagnetic radiation, which is applied to a physically isolated computer environment, is characterized in that the device comprises:
a configuration module: the data transmission terminal and the data receiving terminal are both provided with HDD hard disks, and a magnetic head chip is configured on a magnetic head of the HDD hard disk and used for realizing the amplification of electromagnetic signals;
a data sending module: for converting the amplified electromagnetic signal of the data to be transmitted into a binary signal by the data transmitting terminal, modulating the binary signal into a 2FSK signal, so that the binary signals representing the numbers 0 and 1 correspond to the frequencies, respectivelyf 1Andf 2use off 1Andf 2the carriers of the two frequencies convey information; adding a lead code to the head of the physical frame for each frame of data;
a data receiving module: the data receiving end receives the signal transmitted by the carrier wave by using a Software Defined Radio (SDR), restores the signal and acquires the data sent by the data sending end.
6. The HDD hard disk electromagnetic radiation-based data ferry device according to claim 5, wherein the data transmission module includes:
a promoter module: the data sending program is used for starting the data sending program of the data sending terminal;
a format conversion submodule: the HDD hard disk used for the data sending end reads the data signal at a high speed, amplifies the data signal and converts the read amplified data signal into a binary format signal;
a modulation submodule: for modulating the binary format signal into a 2FSK signal;
a first judgment sub-module: the data processing device is used for judging whether the current data frame data is full;
reading the sub-modules: for bit-wise reading of the 2FSK signal;
a second judgment sub-module: the data processing device is used for judging whether the data represented by the read 2FSK signal is 0;
a first frequency modulation submodule: for adjusting the read-write frequency of HDDf 1；
A second frequency modulation submodule: for adjusting the read-write frequency of HDDf 2；
A preamble submodule: the data transmitting end is used for transmitting the current frame to the data receiving end by adding a lead code at the head of the current frame so as to realize the synchronization of the data transmitting end and the data receiving end; establishing a new data frame;
a third judgment sub-module: used for judging whether the data sending end finishes sending data;
a sending submodule: and (3) supplementing the vacant bits of the current data frame by 0, adding a lead code at the head of the current data frame, and sending the current data frame to a data receiving end.
7. The HDD-hard disk electromagnetic radiation-based data ferry device according to claim 5, wherein the first four bits of the data frame are lead codes for marking the time sequence of the data frame, so that the data synchronization between the data sending end and the data receiving end can be realized; the middle 12 bits of the data frame are transmitted data information; the data frame is also provided with a CRC check code.
8. The HDD hard disk electromagnetic radiation-based data ferry device according to claim 5, wherein the data receiving module includes:
a promoter module: for being started by the data receiving end data receiving program;
a receiving submodule: receiving a data frame using a Software Defined Radio (SDR) to acquire a signal conveyed by a carrier, wherein a preamble achieves synchronization between a sender and a receiver;
a demodulation submodule: for demodulating the received signal;
and (3) restoring a submodule: and the data end display module is used for restoring the demodulated signals, performing CRC (cyclic redundancy check) on the data, receiving the data if the CRC is correct, and performing data end display, otherwise, giving up.
9. A system for data ferry based on HDD hard disk electromagnetic radiation, comprising:
a processor for executing a plurality of instructions;
a memory to store a plurality of instructions;
wherein the plurality of instructions are for being stored by the memory and loaded by the processor and executing the method for HDD hard disk electromagnetic radiation based data ferry according to any of claims 1-4.
10. A computer-readable storage medium having stored therein a plurality of instructions; the plurality of instructions for loading and executing by a processor the method for HDD hard disk electromagnetic radiation based data ferrying of any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155820.3A CN111010357B (en) | 2020-03-09 | 2020-03-09 | Data ferrying method and device based on HDD hard disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155820.3A CN111010357B (en) | 2020-03-09 | 2020-03-09 | Data ferrying method and device based on HDD hard disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111010357A true CN111010357A (en) | 2020-04-14 |
| CN111010357B CN111010357B (en) | 2020-06-16 |
Family
ID=70120984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155820.3A Active CN111010357B (en) | 2020-03-09 | 2020-03-09 | Data ferrying method and device based on HDD hard disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111010357B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217526A (en) * | 1997-11-13 | 1999-05-26 | 索尼株式会社 | Apparatus for recording data on magnetic recording medium |
| CN1257273A (en) * | 1998-11-11 | 2000-06-21 | Tdk株式会社 | Magnetic head device |
| US20010004303A1 (en) * | 1999-12-15 | 2001-06-21 | Takeshi Wada | Head suspension assembly with precise positioning actuator |
| US6263288B1 (en) * | 1998-07-22 | 2001-07-17 | Eastman Kodak Company | Method and apparatus for indicating proximity of film scanner to CRT display monitor |
| US20100110578A1 (en) * | 2008-10-31 | 2010-05-06 | Fujitsu Limited | Signal amplifier and storage device |
| CN103187071A (en) * | 2011-12-30 | 2013-07-03 | Hgst荷兰有限公司 | Microwave-assisted magnetic recording head and systems thereof with environmental conditions control |
| US20140133283A1 (en) * | 2012-11-14 | 2014-05-15 | Headway Technologies, Inc. | Plasmon Resonator with Dual Waveguide Excitation for TAMR |
| CN104050981A (en) * | 2013-03-13 | 2014-09-17 | 希捷科技有限公司 | Contact detection using laser modulation |
| CN205453690U (en) * | 2016-03-14 | 2016-08-10 | 张培蕾 | Using mobile phones simulation magnetism data transmission's device |
| CN205723958U (en) * | 2016-06-17 | 2016-11-23 | 上海易码信息科技有限公司 | Magnetic field impulse launches antenna |
| CN106776412A (en) * | 2016-12-21 | 2017-05-31 | 广州炒米信息科技有限公司 | Interface compatibility circuit |
| CN109640096A (en) * | 2018-12-06 | 2019-04-16 | 浙江大学 | A kind of concealed communication method based on video decoding electromagnetic leakage |
-
2020
- 2020-03-09 CN CN202010155820.3A patent/CN111010357B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217526A (en) * | 1997-11-13 | 1999-05-26 | 索尼株式会社 | Apparatus for recording data on magnetic recording medium |
| US6263288B1 (en) * | 1998-07-22 | 2001-07-17 | Eastman Kodak Company | Method and apparatus for indicating proximity of film scanner to CRT display monitor |
| CN1257273A (en) * | 1998-11-11 | 2000-06-21 | Tdk株式会社 | Magnetic head device |
| US20010004303A1 (en) * | 1999-12-15 | 2001-06-21 | Takeshi Wada | Head suspension assembly with precise positioning actuator |
| US20100110578A1 (en) * | 2008-10-31 | 2010-05-06 | Fujitsu Limited | Signal amplifier and storage device |
| CN103187071A (en) * | 2011-12-30 | 2013-07-03 | Hgst荷兰有限公司 | Microwave-assisted magnetic recording head and systems thereof with environmental conditions control |
| US20140133283A1 (en) * | 2012-11-14 | 2014-05-15 | Headway Technologies, Inc. | Plasmon Resonator with Dual Waveguide Excitation for TAMR |
| CN104050981A (en) * | 2013-03-13 | 2014-09-17 | 希捷科技有限公司 | Contact detection using laser modulation |
| CN205453690U (en) * | 2016-03-14 | 2016-08-10 | 张培蕾 | Using mobile phones simulation magnetism data transmission's device |
| CN205723958U (en) * | 2016-06-17 | 2016-11-23 | 上海易码信息科技有限公司 | Magnetic field impulse launches antenna |
| CN106776412A (en) * | 2016-12-21 | 2017-05-31 | 广州炒米信息科技有限公司 | Interface compatibility circuit |
| CN109640096A (en) * | 2018-12-06 | 2019-04-16 | 浙江大学 | A kind of concealed communication method based on video decoding electromagnetic leakage |
Non-Patent Citations (1)
| Title |
|---|
| 周正: "基于物联网的物理隔离隐蔽信道研究", 《中国优秀硕士学位论文全文库》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111010357B (en) | 2020-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101743713B (en) | Interface circuit | |
| CN103841658B (en) | Method and device for transmitting information | |
| EP2838235B1 (en) | Method, system, apparatus and electronic signature tool for modulation mode self-adaptation in communication via audio interface | |
| AU2013275900B2 (en) | Audio data transmission system, audio data transmission device, and electronic signature tool | |
| CN100461287C (en) | Digital information recording apparatus and outputting apparatus | |
| RU2434353C2 (en) | Method and apparatus for efficient support for multiple authentications | |
| CN102739587B (en) | Audio data transmission method | |
| CN111010357B (en) | Data ferrying method and device based on HDD hard disk | |
| PH12014502691B1 (en) | Audio data transmission method | |
| EP4191910A1 (en) | Data transmission method and apparatus | |
| US9838779B2 (en) | Method, system and apparatus for audio communication modulation modes self-adaptation, and electronic signature token | |
| EP2838236B1 (en) | Method, system, device, and electronic signature tool for audio communication modulation scheme self-adaptation | |
| CN102217208B (en) | The transmission method of signal, combiner and system | |
| JP3324521B2 (en) | Incoming call confirming and sending method in a two-way wireless communication system, a recording medium recording an incoming call confirming and sending program in the two-way wireless communication system, and a two-way wireless communication system and a base station used in the two-way wireless communication system | |
| CN102404699B (en) | Method, device and system for safe communication of email based on cell phone mailbox | |
| CN101771432B (en) | Demodulation method and system used in hybrid transmission of uplink pilot signal and service signal | |
| US9953658B2 (en) | Data decoding method and apparatus | |
| CN109862002A (en) | A kind of traceable Data Security and system | |
| US10574296B2 (en) | Method and apparatus for expanding field of near field communication | |
| CN101378488A (en) | Broadcast receiving apparatus and recording/reproducing method of program | |
| JPS6090448A (en) | Communication device | |
| Ferrell | A terminal for data transmission over telephone circuits | |
| JPS62252580A (en) | Malfunction detecting system in digital recording and reproducing device | |
| CN106529343A (en) | Data security method and system based on fax | |
| von Renouard | stelle f |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |