CN106789038A - A kind of method and system of subsurface communication, a kind of free running device under water - Google Patents
A kind of method and system of subsurface communication, a kind of free running device under water Download PDFInfo
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- CN106789038A CN106789038A CN201710055702.3A CN201710055702A CN106789038A CN 106789038 A CN106789038 A CN 106789038A CN 201710055702 A CN201710055702 A CN 201710055702A CN 106789038 A CN106789038 A CN 106789038A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0858—Details about key distillation or coding, e.g. reconciliation, error correction, privacy amplification, polarisation coding or phase coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a kind of method and system of subsurface communication, a kind of free running device under water, the method, including：Quantum communications channel is set up with water surface base station in advance, is also included：The shared quantum key in the water surface base station is obtained by the quantum communications channel；Obtain data to be transmitted；The data to be transmitted is encrypted using the quantum key；The data to be transmitted after by encryption is sent to the water surface base station.The invention provides a kind of method and system of subsurface communication, a kind of free running device under water, it is possible to increase the security of communication.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of method and system of subsurface communication, a kind of freedom under water
ROV.
Background technology
With the exploitation to marine resources, subsurface communication application is more and more.For example：Saved under water by underwater sensor etc.
The data such as point collection temperature, density, salinity, acidity under water, these data are transmitted using subsurface communication.
In the prior art, subsurface communication is mainly by radio magnetic wave to realize, between each equipment of subsurface communication
When carrying out data transmission, RSA Algorithm, DES (Data Encryption Standard, data encryption standards) are mainly used
The conventional encryption algorithms such as algorithm are encrypted.If the key of these AESs is compromised, the transmission between each equipment
Data are easy for being stolen, and, cannot also discover after key is compromised.In a word, the safety of subsurface communication of the prior art
Property is relatively low.
The content of the invention
The embodiment of the invention provides a kind of method and system of subsurface communication, a kind of free running device, Neng Gouti under water
The security of height communication.
In a first aspect, a kind of method of subsurface communication is the embodiment of the invention provides, including：
Quantum communications channel is set up with water surface base station in advance, is also included：
The shared quantum key in the water surface base station is obtained by the quantum communications channel；
Obtain data to be transmitted；
The data to be transmitted is encrypted using the quantum key；
The data to be transmitted after by encryption is sent to the water surface base station.
Further, it is described that the shared quantum key in the water surface base station is obtained by the quantum communications channel, including：
The shared quantum bit stream in the water surface base station, the quantum bit stream bag are obtained by the quantum communications channel
Include predetermined number quantum bit；
According to the quantum bit stream, the quantum key is determined.
Further, the method is further included：Pre-save the key of each node under water；
The acquisition data to be transmitted, including：
Receive the ciphertext by encryption that any node under water is sent in the form of a sound wave；
It is determined that sending the key of the node under water of the ciphertext；
Using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, the number to be transmitted is decrypted
According to.
Further, it is described to set up quantum communications channel with water surface base station in advance, including：
The quantum bit that the second quantum bit structure according to the first quantum bit and the water surface base station is tangled for a pair；
It is described that the shared quantum key in the water surface base station is obtained by the quantum communications channel, including：
The water surface base station is obtained to constitute first quantum bit, second quantum bit and the 3rd quantum bit
Quantum state carry out the metrical information of bell base measurements；
According to the metrical information, the quantum key is determined.
Second aspect, the embodiment of the invention provides a kind of free running device under water, including：
Unit is set up, for setting up quantum communications channel with water surface base station；
Key acquiring unit, for obtaining the shared quantum key in the water surface base station by the quantum communications channel；
Data capture unit, for obtaining data to be transmitted；
Ciphering unit, for encrypting the data to be transmitted using the quantum key；
Transmitting element, the water surface base station is sent to for the data to be transmitted after by encryption.
Further, the key acquiring unit, is total to for obtaining the water surface base station by the quantum communications channel
The quantum bit stream enjoyed, the quantum bit stream includes predetermined number quantum bit, according to the quantum bit stream, determines institute
State quantum key.
Further, this under water free running device further include：Storage unit, for preserving the close of each node under water
Key；
The data capture unit, including：
Receiving subelement, for receiving the ciphertext by encryption that any node under water is sent in the form of a sound wave；
Node key determination subelement, for determining to send described in the ciphertext key of node under water；
Decryption subelement, for using sending described in the ciphertext ciphertext described in the secret key decryption of node under water, decryption
Go out the data to be transmitted.
Further, it is described to set up unit, for according to described under water the first quantum bit of free running device with it is described
Second quantum bit of water surface base station builds a pair quantum bits for tangling；
The key acquiring unit, including：
Obtain subelement, for obtain the water surface base station to first quantum bit, second quantum bit and
The quantum state that 3rd quantum bit is constituted carries out the metrical information of bell base measurements；
Quantum key determination subelement, for according to the metrical information, determining the quantum key.
The third aspect, the embodiment of the invention provides a kind of system of subsurface communication, including：
At least one as described in any in second aspect free running device and water surface base station under water；
Free running device is connected with the water surface base station under water described in each；
The water surface base station, for the quantum communications Channel Sharing quantum key by pre-building, receive described under water
Free running device is sent using the data to be transmitted after quantum key encryption, after being decrypted using the quantum key, is obtained
The data to be transmitted.
Further, the system, further includes：At least one node under water；
The free running device under water, further includes：Storage unit, the key for preserving each node under water；
Data capture unit in the device of free running under water, including：
Receiving subelement, for receiving the ciphertext by encryption that any node under water is sent in the form of a sound wave；
Node key determination subelement, for determining to send described in the ciphertext key of node under water；
Decryption subelement, for using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, obtaining
The data to be transmitted；
The node under water, for obtaining the data to be transmitted, generation is encrypted to the data to be transmitted described
Ciphertext, the free running device under water is sent to by the ciphertext in the form of a sound wave.
In embodiments of the present invention, quantum key is obtained by quantum communication channel, is encrypted by quantum key to be passed
Transmission of data, during quantum key is transmitted in quantum communications channel, quantum key is marked by quantum state, if should
Transmitting procedure is ravesdropping, and will disturb quantum state, and the two ends of such quantum communications channel will realize and be ravesdropping, and need to only give up
The quantum key, you can ensure stealing for quantum key, and then improve the security of communication.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of flow chart of the method for subsurface communication that one embodiment of the invention is provided；
Fig. 2 is the flow chart of the method for another subsurface communication that one embodiment of the invention is provided；
Fig. 3 is a kind of schematic diagram of device of free running under water that one embodiment of the invention is provided；
Fig. 4 is the schematic diagram of another free running device under water that one embodiment of the invention is provided；
Fig. 5 is a kind of schematic diagram of the system of subsurface communication that one embodiment of the invention is provided；
Fig. 6 is the schematic diagram of the system of another subsurface communication that one embodiment of the invention is provided.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
As shown in figure 1, the embodiment of the invention provides a kind of method of subsurface communication, the method can include following step
Suddenly：
Step 101：In advance quantum communications channel is set up with water surface base station；
Step 102：The shared quantum key in the water surface base station is obtained by the quantum communications channel；
Step 103：Obtain data to be transmitted；
Step 104：The data to be transmitted is encrypted using the quantum key；
Step 105：The data to be transmitted after by encryption is sent to the water surface base station.
In embodiments of the present invention, quantum key is obtained by quantum communication channel, is encrypted by quantum key to be passed
Transmission of data, during quantum key is transmitted in quantum communications channel, quantum key is marked by quantum state, if should
Transmitting procedure is ravesdropping, and will disturb quantum state, and the two ends of such quantum communications channel will realize and be ravesdropping, and need to only give up
The quantum key, you can ensure stealing for quantum key, and then improve the security of communication.
In an embodiment of the present invention, it is described that the shared quantum in the water surface base station is obtained by the quantum communications channel
Key, including：
The shared quantum bit stream in the water surface base station, the quantum bit stream bag are obtained by the quantum communications channel
Include predetermined number quantum bit；
According to the quantum bit stream, the quantum key is determined.
In embodiments of the present invention, quantum key is transmitted by the state of each quantum bit in quantum bit stream,
So that quantum key is safer, when quantum key is stolen, can find in time, and then carried out using other quantum keys
Encryption data to be transmitted, it is ensured that the security of communication.
For example, predetermined number can be 64.
In an embodiment of the present invention, the method is further included：Pre-save the key of each node under water；
The acquisition data to be transmitted, including：
Receive the ciphertext by encryption that any node under water is sent in the form of a sound wave；
It is determined that sending the key of the node under water of the ciphertext；
Using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, the data to be transmitted is obtained.
In embodiments of the present invention, data to be transmitted can come from node under water.Under water node by the form of sound wave come
Transmission ciphertext, because decay of the sound wave in water is smaller, and spread speed of the sound wave in water is more stable, ensure that information
The quality of transmission.
In addition, the key of each node under water can be mutually different, so, when the key of one of them node under water
After being stolen, other nodes under water will not be caused harm, other nodes under water still can safely transmit data.Water
Lower node encryption when, can be realized by symmetric cryptography, can so improve the speed of information processing.
In an embodiment of the present invention, quantum communications channel is set up with water surface base station in advance, including：
The quantum bit that the second quantum bit structure according to the first quantum bit and the water surface base station is tangled for a pair；
It is described that the shared quantum key in the water surface base station is obtained by the quantum communications channel, including：
The water surface base station is obtained to constitute first quantum bit, second quantum bit and the 3rd quantum bit
Quantum state carry out the metrical information of bell base measurements；
According to the metrical information, the quantum key is determined.
In embodiments of the present invention, water surface base station is provided with the second quantum bit and the 3rd quantum bit, the first quantum ratio
Special and the second quantum bit constitutes a pair quantum bits for tangling, and quantum state, water surface base station pair are constituted with reference to the 3rd quantum bit
The quantum state carries out bell base measurements, obtains metrical information.
As shown in Fig. 2 the embodiment of the invention provides a kind of method of subsurface communication, the method can include following step
Suddenly：
Step 201：Pre-save the key of each node under water.
Specifically, cipher key store can be pre-set, the key of each node under water is saved in cipher key store.
Here key can be 64.
Step 202：In advance quantum communications channel is set up with water surface base station.
Specifically, the quantum ratio that the second quantum bit structure according to the first quantum bit and water surface base station is tangled for a pair
It is special.
Certainly the multipair quantum bit for tangling can be built the need for the information content of transmission, and then can be transmitted more
Information.64 or 128 pairs of quantum bits for tangling can for example be built.
Step 203：The shared quantum key in water surface base station is obtained by quantum communication channel.
Specifically, obtaining water surface base station measurement carries out the survey of bell base measurements to the second quantum bit and the 3rd quantum bit
Amount information；
According to metrical information, quantum key is determined.
Step 204：Receive the ciphertext by encryption that node A under water sends in the form of a sound wave.
Specifically, node A encrypts data to be transmitted with the key of itself under water, generates ciphertext.
Step 205：It is determined that sending the key of the A of node under water of ciphertext.
Step 206：Using the secret key decryption ciphertext of the node under water for sending ciphertext, data to be transmitted is decrypted.
Specifically, node is encrypted using symmetric encipherment algorithm under water, is realized here close with the key identical of encryption
Key is decrypted.
Step 207：Data to be transmitted is encrypted using quantum key.
Step 208：Data to be transmitted after encryption is sent to water surface base station.
Specifically, the data to be transmitted after encryption can in the form of a sound wave be sent, it is also possible to by quantum communication channel
Send data to be transmitted.
As shown in figure 3, a kind of free running device under water is the embodiment of the invention provides, including：
Unit 301 is set up, for setting up quantum communications channel with water surface base station；
Key acquiring unit 302, it is close for obtaining the shared quantum in the water surface base station by the quantum communications channel
Key；
Data capture unit 303, for obtaining data to be transmitted；
Ciphering unit 304, for encrypting the data to be transmitted using the quantum key；
Transmitting element 305, the water surface base station is sent to for the data to be transmitted after by encryption.
In an embodiment of the present invention, the key acquiring unit, for obtaining described by the quantum communications channel
The shared quantum bit stream in water surface base station, the quantum bit stream includes predetermined number quantum bit, according to the quantum ratio
Spy's stream, determines the quantum key.
As shown in figure 4, in an embodiment of the present invention, this under water free running device further include：Storage unit 401,
Key for preserving each node under water；
The data capture unit 303, including：
Receiving subelement 3031, for receiving the close of the process encryption that any node under water is sent in the form of a sound wave
Text；
Node key determination subelement 3032, for determining to send described in the ciphertext key of node under water；
Decryption subelement 3033, for using sending described in the ciphertext ciphertext described in the secret key decryption of node under water,
Decrypt the data to be transmitted.
In an embodiment of the present invention, it is described to set up unit, for the first quantum of the free running device under water according to
The quantum bit that bit is tangled for a pair with the second quantum bit structure of the water surface base station；
The key acquiring unit, including：
Obtain subelement, for obtain the water surface base station to first quantum bit, second quantum bit and
The quantum state that 3rd quantum bit is constituted carries out the metrical information of bell base measurements；
Quantum key determination subelement, for according to the metrical information, determining the quantum key.
Specifically, policy information can be sent to free running device under water by water surface base station in the form of a sound wave.
Specifically, the quantum state of the first quantum bit c, the second quantum bit b and the 3rd quantum a bits composition can be：
Wherein, α and β meets | α |2+|β|2=1.
When metrical information is | Φ+>abWhen, free running device obtains the amount that water surface base station transmits using I conversion under water
Sub-information；When metrical information is | Φ->abWhen, free running device obtains the quantum that water surface base station transmits using transform under water
Information；When metrical information is | Ψ+>abWhen, free running device obtains the quantum letter that water surface base station transmits using X conversion under water
Breath；When metrical information is | Ψ->abWhen, free running device utilization-iY conversion under water obtains the quantum letter that water surface base station transmits
Breath.Then, quantum key is determined according to quantum information.
Wherein, in an embodiment of the present invention,
A kind of system of subsurface communication is the embodiment of the invention provides, including：
Any free running device and the water surface base station under water at least one embodiment of the present invention；
Free running device is connected with the water surface base station under water described in each；
The water surface base station, for the quantum communications Channel Sharing quantum key by pre-building, receive described under water
Free running device is sent using the data to be transmitted after quantum key encryption, after being decrypted using the quantum key, is obtained
The data to be transmitted.
As shown in figure 5, a kind of system of subsurface communication is the embodiment of the invention provides, including：
Any device of free running under water 501 and water surface base station 502 in three embodiment of the present invention；
Free running device 501 is connected with the water surface base station 502 under water described in each.
In embodiments of the present invention, the system is further included：At least one node under water；
The free running device under water, further includes：Storage unit, the key for preserving each node under water；
Data capture unit in the device of free running under water, including：
Receiving subelement, for receiving the ciphertext by encryption that any node under water is sent in the form of a sound wave；
Node key determination subelement, for determining to send described in the ciphertext key of node under water；
Decryption subelement, for using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, obtaining
The data to be transmitted；
The node under water, for obtaining the data to be transmitted, generation is encrypted to the data to be transmitted described
Ciphertext, the free running device under water is sent to by the ciphertext in the form of a sound wave.
As shown in fig. 6, a kind of system of subsurface communication is the embodiment of the invention provides, including：
Any device of free running under water 501 and water surface base station 502 in three embodiment of the present invention；
Free running device 501 is connected with the water surface base station 502 under water described in each；
Each under water free running device 501 with three under water node 601 be connected.
In embodiments of the present invention, node can be underwater sensor under water.Under water node can gather temperature in water,
The data such as density, salinity, acidity, these data can be uploaded to free running device under water as data to be transmitted.
In embodiments of the present invention, between water surface base station and under water free running device, realized using quantum teleportation
Quantum key is shared between the two, and water surface base station is ensured and under water between free running device using incident space nonlocality is tangled
Communication message safety.Node is believed between the two between free running device under water using symmetric encipherment algorithm realization under water
The encrypted transmission of breath, using symmetric cryptography, efficiently advantage improves its communication information efficiency.
In embodiments of the present invention, the system can also be including base station on the bank etc., and water surface base station can be entered with base station on the bank
Row communication.The data to be transmitted of acquisition can be sent to base station on the bank by water surface base station.
In embodiments of the present invention, node can be laid out by following several ways under water：
First way：Node deployment is it is determined that position under water, it is impossible to mobile.
The second way：Node anchor, can be with the activity of finite region in seabed under water.
The third mode：Node can be suspended in different depth in water under water.
4th kind of mode：Node geo-stationary under water, free running device can the activity in large area under water.
The embodiment of the present invention had both considered the requirement of underwater sound wave communication, possesses preferable sensor and lays strategy, met water
Lower node obtains the demand of optimal perceived effect and coverage of communication, it is further contemplated that the requirement of quantum communications, can implement Quantum Teleportation
The communication of state is passed, water surface base station, under water free running device can realize transmission, the measurement to quantum state.Wherein, water surface base station can be with
It is trusted party.
In embodiments of the present invention, the system can include at least one cluster, and each cluster is by cluster host node, cluster from node group
Into.Wherein, cluster host node is taken on by the device of free running under water that energy is sufficient, computing capability is strong, and cluster is from node by node under water
Serve as.Each cluster host node can be interacted with the cluster in same cluster from node.In addition, each under water node at least by 1
Node is detected individual neighbours under water, can be led between node under water by the mutual acoustic communication of many hop patterns between node under water
Letter loss and distance, frequency etc. have relation.In embodiments of the present invention, can deliver at random substantial amounts of node under water (including
Redundant node).Specifically, the system can include 3 clusters, and each cluster includes 1, and free running device and 7 save under water under water
Point.
In embodiments of the present invention, free running device can be also used for the preparation of Quantum Entangled States under water, the generation of route,
Maintenance, channel distribution etc..Wherein, quantum key can be that free running device was obtained before lower water under water.
In embodiments of the present invention, node is used for the collection and upload of data under water.The key in node can be under water
The block cipher that water surface base station is pre-placed under node before water under water, the block cipher can be 64.
In embodiments of the present invention, free running device is additionally operable to generation network topology structure under water under water.
Specifically, free running device under water, the wide of encryption is sent using self-contained perpendicular transceiver, horizontal transceiver
Information is broadcast, informs that node starts under water, and prepare for the topological structure of communication network.After node receives broadcast message under water,
According to the secret key decryption shared with water surface base station in advance, and with key encrypted response information, wherein the mark comprising node under water,
And the relative depth between node and distance, numerical value of energy etc. under water, response message is broadcast to free running device under water.Water
Lower free running device receives and decrypts response message, builds routing table, information of the routing table comprising ambient water lower node.Under water
If free running device decrypts response message mistake, the corresponding node under water of the response message is piped off；Under water freely
If ROV decryption response message success, to the node reverts back response message under water, and carries a pseudo random number.
After node receives response message and pseudo random number under water, using itself key and pseudo random number, it is collected
Data to be transmitted carry out block encryption, obtain ciphertext.Node and the communication of free running device under water are acoustical signals under water, under water
Ciphertext is sent to free running device under water by node in the form of a sound wave, after free running device receives ciphertext under water, is carried out reverse
Decryption, decrypts data to be transmitted.
A kind of computer-readable recording medium, including execute instruction are the embodiment of the invention provides, when the computing device of storage control
During the execute instruction, the method that the storage control performs any one subsurface communication in the embodiment of the present invention.
A kind of storage control is the embodiment of the invention provides, including：Processor, memory and bus；
The memory is used to store execute instruction, and the processor is connected with the memory by the bus, when
When the storage control runs, the execute instruction of memory storage described in the computing device, so that the storage
The method that controller performs any one subsurface communication in the embodiment of the present invention.
The contents such as the information exchange between each unit, implementation procedure in said apparatus, due to implementing with the inventive method
Example is based on same design, and particular content can be found in the narration in the inventive method embodiment, and here is omitted.
Each embodiment of the invention at least has the advantages that：
1st, in embodiments of the present invention, quantum key is obtained by quantum communication channel, is encrypted by quantum key and treated
Transmission data, during quantum key is transmitted in quantum communications channel, quantum key is marked by quantum state, if
The transmitting procedure is ravesdropping, and will disturb quantum state, and the two ends of such quantum communications channel will realize and be ravesdropping, and only need house
Abandon the quantum key, you can ensure stealing for quantum key, and then improve the security of communication.
2nd, in embodiments of the present invention, node transmits ciphertext by the form of sound wave under water, because sound wave is in water
Decay is smaller, and spread speed of the sound wave in water is more stable, ensure that the quality of information transmission.
3rd, in embodiments of the present invention, between water surface base station and under water free running device, using quantum teleportation reality
Now share quantum key between the two, using tangle incident space nonlocality ensure water surface base station and free running device under water it
Between communication message safety.Node is realized between the two between free running device under water using symmetric encipherment algorithm under water
The encrypted transmission of information, using symmetric cryptography, efficiently advantage improves its communication information efficiency.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation makes a distinction with another entity or operation, and not necessarily require or imply these entities or exist between operating
Any this actual relation or order.And, term " including ", "comprising" or its any other variant be intended to it is non-
It is exclusive to include, so that process, method, article or equipment including a series of key elements not only include those key elements,
But also other key elements including being not expressly set out, or also include by this process, method, article or equipment are solid
Some key elements.In the absence of more restrictions, the key element limited by sentence " including a 〃 〃 〃 〃 〃 〃 ", it is not excluded that in bag
Also there is other identical factor in the process, method, article or the equipment that include the key element.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in the storage medium of embodied on computer readable, the program
Upon execution, the step of including above method embodiment is performed；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
It is last it should be noted that：Presently preferred embodiments of the present invention is the foregoing is only, skill of the invention is merely to illustrate
Art scheme, is not intended to limit the scope of the present invention.All any modifications made within the spirit and principles in the present invention,
Equivalent, improvement etc., are all contained in protection scope of the present invention.
Claims (10)
1. a kind of method of subsurface communication, it is characterised in that including：
In advance quantum communications channel is set up with water surface base station；
Also include：
The shared quantum key in the water surface base station is obtained by the quantum communications channel；
Obtain data to be transmitted；
The data to be transmitted is encrypted using the quantum key；
The data to be transmitted after by encryption is sent to the water surface base station.
2. method according to claim 1, it is characterised in that
It is described that the shared quantum key in the water surface base station is obtained by the quantum communications channel, including：
The shared quantum bit stream in the water surface base station is obtained by the quantum communications channel, the quantum bit stream includes pre-
If quantity quantum bit；
According to the quantum bit stream, the quantum key is determined.
3. method according to claim 1, it is characterised in that
Further include：Pre-save the key of each node under water；
The acquisition data to be transmitted, including：
Receive the ciphertext by encryption that any node under water is sent in the form of a sound wave；
It is determined that sending the key of the node under water of the ciphertext；
Using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, the data to be transmitted is decrypted.
4. according to any described method in claim 1-3, it is characterised in that
It is described to set up quantum communications channel with water surface base station in advance, including：
The quantum bit that the second quantum bit structure according to the first quantum bit and the water surface base station is tangled for a pair；
It is described that the shared quantum key in the water surface base station is obtained by the quantum communications channel, including：
Obtain the amount that the water surface base station is constituted to first quantum bit, second quantum bit and the 3rd quantum bit
Sub- state carries out the metrical information of bell base measurements；
According to the metrical information, the quantum key is determined.
5. one kind free running device under water, it is characterised in that including：
Unit is set up, for setting up quantum communications channel with water surface base station；
Key acquiring unit, for obtaining the shared quantum key in the water surface base station by the quantum communications channel；
Data capture unit, for obtaining data to be transmitted；
Ciphering unit, for encrypting the data to be transmitted using the quantum key；
Transmitting element, the water surface base station is sent to for the data to be transmitted after by encryption.
6. free running device under water according to claim 5, it is characterised in that
The key acquiring unit, for obtaining the shared quantum bit in the water surface base station by the quantum communications channel
Stream, the quantum bit stream includes predetermined number quantum bit, according to the quantum bit stream, determines the quantum key.
7. free running device under water according to claim 5, it is characterised in that
Further include：Storage unit, the key for preserving each node under water；
The data capture unit, including：
Receiving subelement, for receiving the ciphertext by encryption that any node under water is sent in the form of a sound wave；
Node key determination subelement, for determining to send described in the ciphertext key of node under water；
Decryption subelement, for using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, decrypting institute
State data to be transmitted.
8. according to any described free running device under water in claim 5-7, it is characterised in that
It is described to set up unit, for the first quantum bit of free running device and the second of the water surface base station under water according to
Quantum bit builds a pair quantum bits for tangling；
The key acquiring unit, including：
Subelement is obtained, for obtaining the water surface base station to first quantum bit, second quantum bit and the 3rd
The quantum state that quantum bit is constituted carries out the metrical information of bell base measurements；
Quantum key determination subelement, for according to the metrical information, determining the quantum key.
9. a kind of system of subsurface communication, it is characterised in that including：
At least one as described in any in claim 5-9 free running device and water surface base station under water；
Free running device is connected with the water surface base station under water described in each；
The water surface base station, for the quantum communications Channel Sharing quantum key by pre-building, receives the freedom under water
ROV is sent using the data to be transmitted after quantum key encryption, after being decrypted using the quantum key, obtains described
Data to be transmitted.
10. system according to claim 9, it is characterised in that further include：At least one node under water；
The free running device under water, further includes：Storage unit, the key for preserving each node under water；
Data capture unit in the device of free running under water, including：
Receiving subelement, for receiving the ciphertext by encryption that any node under water is sent in the form of a sound wave；
Node key determination subelement, for determining to send described in the ciphertext key of node under water；
Decryption subelement, for using ciphertext described in the secret key decryption of node under water is sent described in the ciphertext, obtaining described
Data to be transmitted；
The node under water, for obtaining the data to be transmitted, the generation ciphertext is encrypted to the data to be transmitted,
The ciphertext is sent to the free running device under water in the form of a sound wave.
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