CN105636025A - Secure data transmission method and system - Google Patents
Secure data transmission method and system Download PDFInfo
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- CN105636025A CN105636025A CN201510397866.5A CN201510397866A CN105636025A CN 105636025 A CN105636025 A CN 105636025A CN 201510397866 A CN201510397866 A CN 201510397866A CN 105636025 A CN105636025 A CN 105636025A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention discloses a secure data transmission method, a sender device, a receiver device and a secure data transmission system. The sender device can generate a random channel serial number for a current to-be-transmitted target data fragment on the basis of fragmenting to-be-transmitted data into multiple data fragments; and enabling the receiver device to switch a working channel to the channel corresponding to the random channel serial number through carrying out channel negotiation with the receiver device, thus transmitting the current data fragment by the negotiated random channel. In application of the invention, the random transmission channel is appointed and switched for each fragmented data fragment in the data transmission process; further, the fragmented and channel divided transmission of the data is realized through a series of appointed random channels; an illegal user is difficult to scan and determine the working channel of a router, monitor the channel and steal the user data; and the user information security is ensured.
Description
Technical field
The invention belongs to the field of information security technology of wireless network, particularly relate to the method and system of a kind of safety-oriented data transfer.
Background technology
Along with Wi-Fi (Wireless-Fidelity, Wireless Fidelity) is increasingly becoming the standard configuration of the mobile terminals such as smart mobile phone, daily life increasingly be unable to do without Wi-Fi, and meanwhile, the information security issue of Wi-Fi is also increasingly severeer.
Wi-Fi is especially by aerial radio signal transmission file, and wherein, Wi-Fi standard is operated in 2.4G frequency range, and frequency range is 2.400 2.4835GHz, and 83.5M bandwidth, is divided into 14 sub-channels altogether, and each sub-channel width is 22MHz. At present, router can be fixed in the 1-14 channel channel of one of them Wi-Fi after setting is operated (unless manager's manual modification), that is, all data transmission between mobile terminal and router all can carry out on set single working channel. This kind adopts the mode of single channel transmission data, easily determined the Wi-Fi working channel of router by scan mode by lawless person, and then lawless person can steal user data by the information that wireless network card is monitored on this channel, thus it is relatively low to cause that user data exists the hidden danger, the information security degree that are easily exposed or lose.
Summary of the invention
In view of this, it is an object of the invention to provide the method and system of a kind of safety-oriented data transfer, it is intended to overcome information security degree this problem low that existing single channel transmission data mode exists, to ensure user information safety.
For this, the following technical scheme of disclosure:
A kind of method of safety-oriented data transfer, is applied to sending ending equipment, and described method includes:
Generating channel switchover policy, described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained;
Sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering;
Responding the request of described channel negotiation at described receiving device, it is achieved after working channel switches to the channel of described accidental channel numbering correspondence, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
Said method, it is preferred that described generation channel switchover policy includes:
Adopt the PRNG preset, generate corresponding pseudo random number for described target data fragment; Wherein, the span of described pseudo random number is default channel number collection;
Described pseudo random number is numbered as the accidental channel that need to adopt when transmitting described target data fragment.
Said method, it is preferred that described channel number collection includes the channel number of 14 sub-channels of Wi-Fi of defined in Wireless Fidelity Wi-Fi standard.
Said method, it is preferred that before described generation channel switchover policy, also include following preprocessing process:
By the working channel pre-set, described sending ending equipment and described receiving device are attached;
The data to be transmitted of sending ending equipment is divided into N number of data slot; Wherein, described N is the natural number more than 1.
A kind of method of safety-oriented data transfer, is applied to receiving device, and described method includes:
Receiving the channel negotiation from sending ending equipment to ask, the request of described channel negotiation includes an accidental channel numbering;
By the working channel of described receiving device, switch to the channel corresponding to described accidental channel numbering from present channel;
By the channel that described accidental channel numbering is corresponding, receive the target data fragment of described sending ending equipment transmission.
A kind of sending ending equipment, including:
Policy generation module, is used for generating channel switchover policy, and described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained;
Request sending module, for sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering;
Data transmission module, for responding the request of described channel negotiation at described receiving device, after realizing the channel that working channel switches to described accidental channel numbering corresponding, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
Above-mentioned sending ending equipment, it is preferred that described policy generation module includes:
Pseudo random number generates unit, for adopting default PRNG, generates corresponding pseudo random number for described target data fragment; Wherein, the span of described pseudo random number is default channel number collection;
Channel number acquiring unit, for numbering described pseudo random number as the accidental channel that need to adopt when transmitting described target data fragment.
Above-mentioned sending ending equipment, it is preferred that also including pretreatment module, described pretreatment module includes:
Connect unit, for the working channel by pre-setting, described sending ending equipment and described receiving device are attached;
Cutting unit, for being divided into N number of data slot by the data to be transmitted of sending ending equipment; Wherein, described N is the natural number more than 1.
A kind of receiving device, including:
Request receiver module, asks for the channel negotiation received from sending ending equipment, and the request of described channel negotiation includes an accidental channel numbering;
Request respond module, for by the working channel of described receiving device, switching to the channel corresponding to described accidental channel numbering from present channel;
Data reception module, for the channel corresponding by described accidental channel numbering, receives the target data fragment of described sending ending equipment transmission.
The system of a kind of safety-oriented data transfer, including sending ending equipment as above and receiving device.
From above scheme, data to be transmitted can be divided on the basis of multiple data slot by the sending ending equipment of application the application method, an accidental channel numbering is generated for current target data fragment waiting for transmission, and by carrying out channel negotiation with receiving device, make receiving device that working channel to switch to the channel that described accidental channel numbering is corresponding, to realize utilizing the accidental channel consulted, current data fragment is transmitted. Thus, application the application, can be that an opportunistic transmission channel is arranged and switched to each data slot splitting gained in transmission data procedures, and then may finally by adopting the segmentation that a series of accidental channels of agreement realize data to divide transmission, the working channel of router is determined for illegal scanning input, and monitor channel steals user data and brings difficulty, eliminate illegal user dramatically by capturing aerial package, steal the probability of full user data, ensure user information safety.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
Fig. 1 is the flow chart of safety-oriented data transfer method disclosed in the embodiment of the present invention one;
Fig. 2 is the flow chart of safety-oriented data transfer method disclosed in the embodiment of the present invention two;
Fig. 3-Fig. 4 is the structural representation of sending ending equipment disclosed in the embodiment of the present invention three;
Fig. 5 is the structural representation of receiving device disclosed in the embodiment of the present invention four.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one
The present embodiment one discloses a kind of method of safety-oriented data transfer, described method can be applicable to sending ending equipment, such as Wi-Fi communication scenes, described method can be applicable to have data and sends the customer mobile terminal such as router or smart mobile phone of demand, with reference to Fig. 1, described method may comprise steps of:
S101: generate channel switchover policy, described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained.
The execution of the present embodiment method need to be based upon on sending ending equipment and the interconnective basis of receiving device, such as Wi-Fi communication scenes, first sending ending equipment each other, the customer mobile terminal of receiving device and router need to be carried out Wi-Fi connection.
Specifically, customer mobile terminal can pass through the SSID (ServiceSetIdentifier service set) of active scan router, it is achieved couple in router; Or can also the information (including the information such as the SSID of router, and cipher mode) of passive receiving router fixed time broadcast on set fixed channel, it is achieved be connected with the Wi-Fi of router. Wherein, the information broadcasting process of router is fixed on a channel to carry out, to facilitate user terminal find this router and connect.
Establishing on the Wi-Fi basis connected at sending ending equipment, receiving device, when sending ending equipment has data transfer demands, first data to be transmitted is divided into N number of data slot by it, and wherein, described N is the natural number more than 1. Afterwards, by the variable-frequency solutions that next the application provides, each data slot corresponding accidental channel realization transmission respectively through agreement of segmentation is made.
Sending ending equipment specifically can adopt a PRNG, generates corresponding pseudo random number for current target data fragment waiting for transmission; And using described pseudo random number as the channel number that need to adopt when transmitting described target data fragment. Wherein, the span of described pseudo random number is default channel number collection.
Such as, for 14 sub-channels of Wi-Fi of defined in Wi-Fi standard, its channel number can be set respectively as 1,2 ..., 14. Based on this, one should be adopted can to randomly generate natural PRNG within the scope of 1-14, generate corresponding required accidental channel numbering for current target data fragment waiting for transmission.
S102: sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering.
After generate corresponding required accidental channel numbering for current target data fragment waiting for transmission, sending ending equipment sends a channel negotiation request carrying described accidental channel numbering to receiving device, to realize carrying out channel agreement, negotiation with receiving device so that it is switch operating channel.
S103: respond the request of described channel negotiation at described receiving device, after realizing the channel that working channel switches to described accidental channel numbering corresponding, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
The request of described channel negotiation is responded at receiving device, the channel that it is currently employed is switched to the channel consulted, namely, after the channel that described accidental channel numbering is corresponding, sending ending equipment can adopt the channel consulted to transmit data to receiving device, completes the transmission of current data fragment.
Application the application method, can by adopting the segmentation that a series of accidental channels of agreement in data transmission procedure realize data to divide transmission, guarantee that Wi-Fi carries out data transmission not in use by a channel fixed, such as, assume that certain data file is divided into n part: file fragment 1, file fragment 2, ..., file fragment n, then in transmission file processes, each file fragment can adopt PRNG to be its accidental channel numbering x1 generated respectively successively, x2, ... channel channel1 corresponding for xn, channel2, ..., channeln, realize data transmission, thus, n segment file fragment is transmitted at different accidental channels successively. wherein, owing to each channel number is pseudo random number, described channel1, channel2 ..., may there is same channel in channeln.
From above scheme, data to be transmitted can be divided on the basis of multiple data slot by the sending ending equipment of application the application method, an accidental channel numbering is generated for current target data fragment waiting for transmission, and by carrying out channel negotiation with receiving device, make receiving device that working channel to switch to the channel that described accidental channel numbering is corresponding, to realize utilizing the accidental channel consulted, current data fragment is transmitted. Thus, application the application, can be that an opportunistic transmission channel is arranged and switched to each data slot splitting gained in transmission data procedures, and then may finally by adopting the segmentation that a series of accidental channels of agreement realize data to divide transmission, the working channel of router is determined for illegal scanning input, and monitor channel steals user data and brings difficulty, eliminate illegal user dramatically by capturing aerial package, steal the probability of full user data, ensure user information safety.
Embodiment two
The present embodiment two discloses a kind of method of safety-oriented data transfer, described method can be applicable to receiving device, for instance for Wi-Fi communication scenes, and described method can be applicable to router or the customer mobile terminal with data receiver demand, with reference to Fig. 2, described method may comprise steps of:
S201: receive the channel negotiation from sending ending equipment and ask, the request of described channel negotiation includes an accidental channel numbering;
S202: by the working channel of described receiving device, switch to the channel corresponding to described accidental channel numbering from present channel;
S203: by the channel that described accidental channel numbering is corresponding, receive the target data fragment of described sending ending equipment transmission.
The method of the present embodiment is mutually corresponding with the method for embodiment one, is applied to receiving device. In data transmission procedure, when the data slot that sending ending equipment is segmentation gained generates corresponding required accidental channel numbering, and by sending the channel negotiation request carrying this accidental channel numbering to receiving device, when consulting to change channel with receiving device, receiving device responds this request, and switching its working channel to the channel consulted, the channel that namely described accidental channel numbering is corresponding, to realize receiving the data slot from sending ending equipment at the channel consulted.
In practical application, customer mobile terminal and router often sending ending equipment and receiving device each other, therefore, logic can be processed by the integrated embodiment of the present invention one provides simultaneously in customer mobile terminal and router respectively the transmitting terminal receiving terminal that processes logic and embodiment two and provide, make both be provided simultaneously with transmitting terminal and receiving terminal function.
Embodiment three
The open a kind of sending ending equipment of the present embodiment, with reference to Fig. 3, described sending ending equipment includes policy generation module 101, request sending module 102 and data transmission module 103.
Policy generation module 101, is used for generating channel switchover policy, and described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained.
Wherein, described policy generation module 101 includes:
Pseudo random number generates unit, for adopting default PRNG, generates corresponding pseudo random number for described target data fragment; Wherein, the span of described pseudo random number is default channel number collection;
Channel number acquiring unit, for numbering described pseudo random number as the accidental channel that need to adopt when transmitting described target data fragment.
Request sending module 102, for sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering.
Data transmission module 103, for responding the request of described channel negotiation at described receiving device, after realizing the channel that working channel switches to described accidental channel numbering corresponding, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
With reference to Fig. 4, described sending ending equipment also includes pretreatment module 104, and this module includes:
Connect unit, for the working channel by pre-setting, described sending ending equipment and described receiving device are attached;
Cutting unit, for the data to be transmitted of sending ending equipment is divided into N number of data slot, wherein, described N is the natural number more than 1.
For sending ending equipment disclosed in the embodiment of the present invention three, due to its with embodiment one disclosed in safety-oriented data transfer method corresponding, so what describe is fairly simple, relevant similarity refers to the explanation of safety-oriented data transfer method part in embodiment one, no longer describes in detail herein.
Embodiment four
The open a kind of receiving device of the present embodiment, with reference to Fig. 5, described receiving device includes:
Request receiver module 201, asks for the channel negotiation received from sending ending equipment, and the request of described channel negotiation includes an accidental channel numbering;
Request respond module 202, for by the working channel of described receiving device, switching to the channel corresponding to described accidental channel numbering from present channel;
Data reception module 203, for the channel corresponding by described accidental channel numbering, receives the target data fragment of described sending ending equipment transmission.
For receiving device disclosed in the embodiment of the present invention four, due to its with embodiment two disclosed in safety-oriented data transfer method corresponding, so what describe is fairly simple, relevant similarity refers to the explanation of safety-oriented data transfer method part in embodiment two, no longer describes in detail herein.
Embodiment five
The present embodiment five discloses the system of a kind of safety-oriented data transfer, and described system includes the sending ending equipment as described in embodiment three and the receiving device as described in embodiment four.
Adopt the system of the present embodiment, a random transmission channel is arranged and switched to each part of data slot that sending ending equipment can be segmentation gained in transmission data procedures, and then may finally by adopting the segmentation that a series of accidental channels of agreement realize data to divide transmission, guarantee that Wi-Fi is no longer secured on some concrete channel in the process of transmission file, thus illegal user cannot pass through to capture aerial package form, steal complete user data, it is ensured that user information safety.
It should be noted that each embodiment in this specification all adopts the mode gone forward one by one to describe, what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually referring to.
For convenience of description, it is divided into various module or unit to be respectively described with function when describing system above or device. Certainly, the function of each unit can be realized in same or multiple softwares and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of required general hardware platform by software to the application and realize. Based on such understanding, the part that prior art is contributed by the technical scheme of the application substantially in other words can embody with the form of software product, this computer software product can be stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a computer equipment (can be personal computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the application or embodiment.
Finally, it can further be stated that, in this article, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the method for a safety-oriented data transfer, it is characterised in that being applied to sending ending equipment, described method includes:
Generating channel switchover policy, described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained;
Sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering;
Responding the request of described channel negotiation at described receiving device, it is achieved after working channel switches to the channel of described accidental channel numbering correspondence, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
2. method according to claim 1, it is characterised in that described generation channel switchover policy includes:
Adopt the PRNG preset, generate corresponding pseudo random number for described target data fragment; Wherein, the span of described pseudo random number is default channel number collection;
Described pseudo random number is numbered as the accidental channel that need to adopt when transmitting described target data fragment.
3. method according to claim 2, it is characterised in that described channel number collection includes the channel number of 14 sub-channels of Wi-Fi of defined in Wireless Fidelity Wi-Fi standard.
4. method according to claim 1, it is characterised in that before described generation channel switchover policy, also include following preprocessing process:
By the working channel pre-set, described sending ending equipment and described receiving device are attached;
The data to be transmitted of sending ending equipment is divided into N number of data slot; Wherein, described N is the natural number more than 1.
5. the method for a safety-oriented data transfer, it is characterised in that being applied to receiving device, described method includes:
Receiving the channel negotiation from sending ending equipment to ask, the request of described channel negotiation includes an accidental channel numbering;
By the working channel of described receiving device, switch to the channel corresponding to described accidental channel numbering from present channel;
By the channel that described accidental channel numbering is corresponding, receive the target data fragment of described sending ending equipment transmission.
6. a sending ending equipment, it is characterised in that including:
Policy generation module, is used for generating channel switchover policy, and described channel switchover policy includes the accidental channel numbering that transmission objectives data slot correspondence need to adopt; Described target data fragment is that data slot concentrates current data slot waiting for transmission, described data slot collection be segmentation sending ending equipment data to be transmitted after the data slot set of gained;
Request sending module, for sending channel negotiation request to receiving device, the request of described channel negotiation includes described accidental channel numbering;
Data transmission module, for responding the request of described channel negotiation at described receiving device, after realizing the channel that working channel switches to described accidental channel numbering corresponding, the channel corresponding by described accidental channel numbering transmits described target data fragment to described receiving device.
7. sending ending equipment according to claim 6, it is characterised in that described policy generation module includes:
Pseudo random number generates unit, for adopting default PRNG, generates corresponding pseudo random number for described target data fragment; Wherein, the span of described pseudo random number is default channel number collection;
Channel number acquiring unit, for numbering described pseudo random number as the accidental channel that need to adopt when transmitting described target data fragment.
8. sending ending equipment according to claim 6, it is characterised in that also including pretreatment module, described pretreatment module includes:
Connect unit, for the working channel by pre-setting, described sending ending equipment and described receiving device are attached;
Cutting unit, for being divided into N number of data slot by the data to be transmitted of sending ending equipment; Wherein, described N is the natural number more than 1.
9. a receiving device, it is characterised in that including:
Request receiver module, asks for the channel negotiation received from sending ending equipment, and the request of described channel negotiation includes an accidental channel numbering;
Request respond module, for by the working channel of described receiving device, switching to the channel corresponding to described accidental channel numbering from present channel;
Data reception module, for the channel corresponding by described accidental channel numbering, receives the target data fragment of described sending ending equipment transmission.
10. the system of a safety-oriented data transfer, it is characterised in that include the sending ending equipment as described in claim 6-8 any one and receiving device as claimed in claim 9.
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| CN201510397866.5A CN105636025A (en) | 2015-07-08 | 2015-07-08 | Secure data transmission method and system |
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| CN201510397866.5A CN105636025A (en) | 2015-07-08 | 2015-07-08 | Secure data transmission method and system |
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