CN107181599A - The storage of route location data confidentiality and sharing method based on block chain - Google Patents

The storage of route location data confidentiality and sharing method based on block chain Download PDF

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Publication number
CN107181599A
CN107181599A CN201710585615.9A CN201710585615A CN107181599A CN 107181599 A CN107181599 A CN 107181599A CN 201710585615 A CN201710585615 A CN 201710585615A CN 107181599 A CN107181599 A CN 107181599A
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data
user node
node
key
storage
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CN107181599B (en
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王劲松
张洪玮
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Tianjin University of Technology
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Tianjin University of Technology
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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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • H04L9/3249—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures using RSA or related signature schemes, e.g. Rabin scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0442—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply asymmetric encryption, i.e. different keys for encryption and decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/12—Applying verification of the received information
    • H04L63/126—Applying verification of the received information the source of the received data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
    • 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
    • H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
    • H04L9/0872—Generation of secret information including derivation or calculation of cryptographic keys or passwords using geo-location information, e.g. location data, time, relative position or proximity to other entities
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Storage Device Security (AREA)
  • Computer And Data Communications (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A kind of storage of route location data confidentiality and sharing method based on block chain.It includes date storage method and data sharing method；Date storage method includes node configuration, data encryption and sends, stores the steps such as sub-network checking storage；Data sharing method includes demand generation, demand response, shares and the step such as reach；Effect of the present invention：Using block chain technology, stored using data encryption, using decentralization network come shared data, solve data storage side and have no right to use data, the problem of user side does not have Channel Selection sexual openness personal data；The present invention is sent in data storage procedure using local cipher, and service side's storage encryption data, decruption key user oneself preserves, and service side can not obtain initial data, there is more preferable data protection effect；Block chain technology is used in storing process, using practical Byzantine failure tolerance algorithm come storage of knowing together, the workload bottleneck problem of centralization storage is solved, it is ensured that data are anti-tamper.

Description

The storage of route location data confidentiality and sharing method based on block chain
Technical field
The present invention relates to a kind of route location data confidentiality storage based on block chain and sharing method, belong to data interconnection Network technology field.
Background technology
Block chain is a kind of Distributed Storage scheme, and it provides a kind of decentralization mode by ad hoc mode Collective's maintenance strategy.System in a period of time is exchanged data summarization by the technology, by contemporary cryptology means total amount According to generation data block, and using timestamp produce data fingerprint, by data block connect chaining and provide validation verification and Audit.
Traditional route location data storage and sharing method mainly have two kinds：It is centrally stored to concentrate shared and distribution to deposit Shared in preserving.It is centrally stored to concentrate the shared course of work to be：Service side gathers the data of all users and centrally stored, often One sharing request will be sent to server-centric and carry out examination ＆ verification processing；Distributed storage concentrates the shared course of work to be： Collection of server all customer data is simultaneously stored by the way that distributed computing technology is scattered, when user initiates sharing request, passes through service Center examination ＆ verification processing.First method uses centrally stored mode, easy to maintenance, safe, but holds because workload is larger It is also easy to produce service bottleneck；Second method uses distributed storage technology, but shared demand is still handled by central server, Data needed for also being found when treated by distributed storage, add system complexity.In addition, the number of two ways storage According to though encryption is all passed through, still can freely it be utilized as service side, privacy of user cannot get effective guarantee；User's Shared demand, once causing shared processing center not work because of certain reason, just can not be realized by sharing processing center Data sharing.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of route location data confidentiality based on block chain Storage and sharing method.
In order to achieve the above object, the present invention is provided the storage of the route location data confidentiality based on block chain and shared side Method includes date storage method and data sharing method；
Described date storage method includes the following steps carried out in order：
1) node is configured
1.1) memory node is configured：
1.1.1 each memory node of service side) is configured to point-to- point communication network；
1.1.2) by step 1.1.1) in each memory node locally generate private key；
1.1.3) by step 1.1.1) in each memory node according to step 1.1.2) in the private key generation public key that produces, and Public key is broadcasted in the whole network；
1.2) user node is configured：
1.2.1 the user node for connecting each routing device for providing service) is configured to point-to- point communication network；
1.2.2) by step 1.2.1) in each user node matching accounts information and according to this information, locally generation is unique Root private key；
1.2.3) by step 1.2.1) in each user node according to step 1.2.2) in the root private key that produces generate by private The shared key pair that key and public key are constituted, wherein each user can have multiple shared keys pair, and public key is wide in the whole network Broadcast；
2) data encryption is sent
2.1) each user node generation random key, and the interval position data based on route of current setting is obtained, so Random key and position data are obtained into encryption data by encryption function computing afterwards；
2.2) each user node is according to step 2.1) in encryption data data summarization is obtained by hash function computing；
2.3) each user node is according to step 1.2.3) in private key and step 2.2) in data summarization, pass through to encrypt and calculate Method computing generates digital signature；
2.4) each user node is by step 2.1) in encryption data together with step 2.3) in digital signature packing it is in dozen Bag data, and certain memory node public key address into storage sub-network is sent at random；
3) storage sub-network checking storage
3.1) each memory node collects received in current slot all according to setting time section and beaten in storage sub-network Bag data simultaneously generates data block；
3.2) each memory node is using practical Byzantine failure tolerance algorithm in storage sub-network, by step 1.2.3) in respectively use Digital signature in the above-mentioned packing data of public key verifications of family node, is reached common understanding with this；
3.3) data block that each memory node completes common recognition in storage sub-network, which is capped timestamp and stored, arrives data On block chain, then broadcasted in the whole network, complete storing process；
Described data sharing method includes the following steps carried out in order：
4) demand is generated
4.1) requesting party's user node request Requested Party user node sends specified location data, generates demand information；
4.2) public key of the local any one shared key centering of requesting party's user node selection sends address as demand, and Digital signature is generated with corresponding private key；
4.3) requesting party's user node obtains the public key of a Requested Party user node in advance, and as destination address, Demand information and digital signature are sent to the address；
5) demand response
5.1) Requested Party user node receives the sharing request of requesting party's user node, is broadcast to the whole network；
5.2) each user node of the whole network reaches the legitimate verification of the request by common recognition mechanism；
5.3) after being verified, the demand information is recorded on shared block chain, and is broadcast to the whole network；
5.4) random key corresponding with demand information and shared key pair is locally extracted in Requested Party user node；
5.5) Requested Party user node randomly selects the public key of a memory node in storage sub-network, and and requesting party The public key encryption of user node produces ciphertext；
5.6) Requested Party user node is by step 5.5) in ciphertext carry out Hash operation, and by by step 5.4) in The private key encryption generation digital signature of the shared key centering of extraction；
5.7) Requested Party user node is encrypted using the public key address encryption random key of requesting party's user node Random key afterwards, then the random key after ciphertext, digital signature and encryption is packaged into packing data and issued in the lump deposit Store up any memory node of sub-network；
6) share and reach
6.1) memory node that Requested Party user node is chosen receives the request of Requested Party user node, passes through numeral Signature and step 5.4) in shared key centering public key verifications identity and ciphertext correctness；
6.2) the private key decryption step 5.5 that the memory node that Requested Party user node is chosen passes through oneself) in ciphertext, Obtain the public key address of requesting party's user node；
6.3) corresponding encryption data is won in information requirements to the memory node that Requested Party user node is chosen according to demand Together with the random key after encryption, and the public key address of requesting party's user node is issued in the lump, the data of transmission pass through common recognition Mechanism is recorded on data block chain；
6.4) requesting party's user node receives the data that the memory node that Requested Party user node chooses is sent, and passes through The private key decryption of oneself obtains random key, then the position data of encryption is decrypted, and obtains original shared data, shares and complete.
In step 1.2.2) and step 1.2.3) in, described generation root private key and the method for shared key pair are including following Step：
A)：Node users generate root private key according to accounts information, local to preserve；
B)：Node users generate the private key for user for shared key pair according to above-mentioned root private key；
C)：Node users generate client public key according to above-mentioned private key for user, finally obtain by private key for user and client public key The shared key pair of composition.
In step 5.2) in, described common recognition mechanism is reached method and comprised the following steps：
D)：Each requesting party's user node receives the demand information of Requested Party user node broadcast in shared sub-network；
E)：Each Requested Party user node participates in common recognition competition by equation below：Contribution degree=(online in nearest 7 days Network total flow in personal use flow in nearest 7 days of duration/168+/nearest 7 days) * shares number of times, contribution degree in nearest 7 days Highest user node verifies this demand；
F the demand information is stored on shared block chain after the completion of) verifying, and gives flow reward；
G) decide that the current Requested Party user node for participating in checking must not participate in the common recognition within following 7 days, know together Complete.
The storage of the route location data confidentiality based on block chain and sharing method that the present invention is provided have following beneficial effect Really：
1st, the present invention uses block chain technology, is stored using data encryption, using decentralization network come shared data, solution The data storage side that determined haves no right to use data, the problem of user side does not have Channel Selection sexual openness personal data；
2nd, the present invention is sent in data storage procedure using local cipher, service side's storage encryption data, decruption key User oneself preserves, and service side can not obtain initial data, there is more preferable data protection effect；
3rd, the present invention uses block chain technology in storing process, using practical Byzantine failure tolerance algorithm come the storage, one of knowing together Aspect solves the workload bottleneck problem of centralization storage, on the other hand can ensure that data are anti-tamper, while also can effectively prevent The service quality problem that only central server failure is brought；
4th, users to share data of the present invention use point to point network, with reference to contemporary cryptology encryption technology, only participate in double Fang Youquan obtains data, can solve privacy of user leakage problem, generates root private key using user profile and then generates shared close Key pair, only participates in both sides and knows identity each other, realize that anonymization is shared；
5th, the present invention is reached common understanding by contribution degree common recognition algorithm, is used shared block chain keeping records, is on the one hand provided Transparent record, brings convenient for audit, while criminal can be prevented to be directed to the malicious attack behavior of shared network.
Brief description of the drawings
Fig. 1 is memory node in the route location data confidentiality based on the block chain storage of the invention provided and sharing method Collocation method flow chart.
Fig. 2 is user node in the route location data confidentiality based on the block chain storage of the invention provided and sharing method Collocation method flow chart.
Fig. 3 sends for data in the route location data confidentiality based on the block chain storage of the invention provided and sharing method And checking storage method flow chart.
Fig. 4 is private for generation root in the route location data confidentiality based on the block chain storage of the invention provided and sharing method Key and shared key are to method flow diagram.
Fig. 5 generates for demand in the route location data confidentiality based on the block chain storage of the invention provided and sharing method With demand response method flow diagram.
Fig. 6 reaches to be shared in the route location data confidentiality based on the block chain storage of the invention provided and sharing method Method flow diagram.
Embodiment
The route location data confidentiality based on block chain provided with reference to the accompanying drawings and detailed description the present invention Storage and sharing method are described in detail.
The present invention according to store and share two kinds of services partition the network into data block chain sub-network towards storage with Towards the shared block chain network of shared service, two networks are all point to point network, for two sub- Web vector graphics two Block chain, be respectively：Data block chain and shared block chain.
Data block chain network wherein towards storage includes the memory node of multiple equalitys, and each memory node is responsible for reception User data simultaneously collects, by know together mechanism verify data validation, and encryption data with block structure according to time order and function Sequential storage generates data block chain on chain.Cooperated by reasonable distribution and improve concurrency, solved center service and exist Workload bottleneck problem, data are encrypted by user terminal, and are stored by block chain technology, can ensure high security data Ensure the high reliability and the transparency of data storage while privacy.
Shared block chain network towards shared service is made up of multiple user nodes, and each user node passes through point-to-point Network characteristic and specific common recognition mechanism are shared to complete position data, each user node fair competition during common recognition, Rewarded accordingly after completing common recognition, the purpose that each user node collective safeguards is reached with this, common recognition operation will be legal every time Shared record all record on shared block chain, each user node can all be checked in network, so as to realize shared network Open and clear and security reliability.
The storage of the route location data confidentiality based on block chain and sharing method that the present invention is provided include data storage side Method and data sharing method；
As shown in Fig. 1-Fig. 3, described date storage method includes the following steps carried out in order：
1) node is configured
1.1) memory node configuration：
1.1.1 each memory node of service side) is configured to point-to- point communication network；
1.1.2) by step 1.1.1) in each memory node locally generate private key；
1.1.3) by step 1.1.1) in each memory node according to step 1.1.2) in the private key generation public key that produces, and Public key is broadcasted in the whole network；
1.2) user node is configured：
1.2.1 the user node for connecting each routing device for providing service) is configured to point-to- point communication network；
1.2.2) by step 1.2.1) in each user node matching accounts information and according to this information, locally generation is unique Root private key；
1.2.3) by step 1.2.1) in each user node according to step 1.2.2) in the root private key that produces generate by private The shared key pair that key and public key are constituted, wherein each user can have multiple shared keys pair, and public key is wide in the whole network Broadcast；
2) data encryption is sent
2.1) each user node generation random key, and the interval position data based on route of current setting is obtained, so Random key and position data are obtained into encryption data by encryption function computing afterwards；
2.2) each user node is according to step 2.1) in encryption data data summarization is obtained by hash function computing；
2.3) each user node is according to step 1.2.3) in private key and step 2.2) in data summarization, pass through to encrypt and calculate Method computing generates digital signature；
2.4) each user node is by step 2.1) in encryption data together with step 2.3) in digital signature packing it is in dozen Bag data, and certain memory node public key address into storage sub-network is sent at random；
3) storage sub-network checking storage
3.1) each memory node collects received in current slot all according to setting time section and beaten in storage sub-network Bag data simultaneously generates data block；
3.2) each memory node is using practical Byzantine failure tolerance algorithm in storage sub-network, by step 1.2.3) in respectively use Digital signature in the above-mentioned packing data of public key verifications of family node, is reached common understanding with this；
3.3) data block that each memory node completes common recognition in storage sub-network, which is capped timestamp and stored, arrives data On block chain, then broadcasted in the whole network, complete storing process；
As shown in figure 4, in step 1.2.2) and step 1.2.3) in, described generation root private key and the side of shared key pair Method comprises the following steps：
A)：Node users generate root private key according to accounts information, local to preserve；
B)：Node users generate the private key for user for shared key pair according to above-mentioned root private key；
C)：Node users generate client public key according to above-mentioned private key for user, finally obtain by private key for user and client public key The shared key pair of composition.
As shown in Fig. 4-Fig. 5, described data sharing method includes the following steps carried out in order：
4) demand is generated
4.1) requesting party's user node request Requested Party user node sends specified location data, generates demand information；
4.2) public key of the local any one shared key centering of requesting party's user node selection sends address as demand, and Digital signature is generated with corresponding private key；
4.3) requesting party's user node obtains the public key of a Requested Party user node in advance, and as destination address, Demand information and digital signature are sent to the address；
5) demand response
5.1) Requested Party user node receives the sharing request of requesting party's user node, is broadcast to the whole network；
5.2) each user node of the whole network reaches the legitimate verification of the request by common recognition mechanism；
5.3) after being verified, the demand information is recorded on shared block chain, and is broadcast to the whole network；
5.4) random key corresponding with demand information and shared key pair is locally extracted in Requested Party user node；
5.5) Requested Party user node randomly selects the public key of a memory node in storage sub-network, and and requesting party The public key encryption of user node produces ciphertext；
5.6) Requested Party user node is by step 5.5) in ciphertext carry out Hash operation, and by by step 5.4) in The private key encryption generation digital signature of the shared key centering of extraction；
5.7) Requested Party user node is encrypted using the public key address encryption random key of requesting party's user node Random key afterwards, then the random key after ciphertext, digital signature and encryption is packaged into packing data and issued in the lump deposit Store up any memory node of sub-network；
6) share and reach
6.1) memory node that Requested Party user node is chosen receives the request of Requested Party user node, passes through numeral Signature and step 5.4) in shared key centering public key verifications identity and ciphertext correctness；
6.2) the private key decryption step 5.5 that the memory node that Requested Party user node is chosen passes through oneself) in ciphertext, Obtain the public key address of requesting party's user node；
6.3) corresponding encryption data is won in information requirements to the memory node that Requested Party user node is chosen according to demand Together with the random key after encryption, and the public key address of requesting party's user node is issued in the lump, the data of transmission pass through common recognition Mechanism is recorded on data block chain；
6.4) requesting party's user node receives the data that the memory node that Requested Party user node chooses is sent, and passes through The private key decryption of oneself obtains random key, then the position data of encryption is decrypted, and obtains original shared data, shares and complete.
In step 5.2) in, described common recognition mechanism is reached method and comprised the following steps：
D)：Each requesting party's user node receives the demand information of Requested Party user node broadcast in shared sub-network；
E)：Each Requested Party user node participates in common recognition competition by equation below：Contribution degree=(online in nearest 7 days Network total flow in personal use flow in nearest 7 days of duration/168+/nearest 7 days) * shares number of times, contribution degree in nearest 7 days Highest user node verifies this demand；
F the demand information is stored on shared block chain after the completion of) verifying, and gives flow reward；
G) decide that the current Requested Party user node for participating in checking must not participate in the common recognition within following 7 days, know together Complete.

Claims (3)

1. a kind of storage of route location data confidentiality and sharing method based on block chain, it is characterised in that：It is described based on area The route location data confidentiality storage of block chain and sharing method include date storage method and data sharing method；
Described date storage method includes the following steps carried out in order：
1) node is configured
1.1) memory node is configured：
1.1.1 each memory node of service side) is configured to point-to- point communication network；
1.1.2) by step 1.1.1) in each memory node locally generate private key；
1.1.3) by step 1.1.1) in each memory node according to step 1.1.2) in the private key generation public key that produces, and by public affairs Key is broadcasted in the whole network；
1.2) user node is configured：
1.2.1 the user node for connecting each routing device for providing service) is configured to point-to- point communication network；
1.2.2) by step 1.2.1) in each user node matching accounts information and locally to generate unique root according to this information private Key；
1.2.3) by step 1.2.1) in each user node according to step 1.2.2) in the root private key generation that produces by private key and The shared key pair that public key is constituted, wherein each user can have multiple shared keys pair, and public key is broadcasted in the whole network；
2) data encryption is sent
2.1) each user node generation random key, and the interval position data based on route of current setting is obtained, then will Random key and position data obtain encryption data by encryption function computing；
2.2) each user node is according to step 2.1) in encryption data data summarization is obtained by hash function computing；
2.3) each user node is according to step 1.2.3) in private key and step 2.2) in data summarization, transported by AES Calculate generation digital signature；
2.4) each user node is by step 2.1) in encryption data together with step 2.3) in digital signature be packaged into packing number According to, and certain memory node public key address into storage sub-network is sent at random；
3) storage sub-network checking storage
3.1) each memory node collects all packing numbers received in current slot according to setting time section in storage sub-network According to and generate data block；
3.2) each memory node is using practical Byzantine failure tolerance algorithm in storage sub-network, by step 1.2.3) in each user's section Digital signature in the above-mentioned packing data of public key verifications of point, is reached common understanding with this；
3.3) data block that each memory node completes common recognition in storage sub-network, which is capped timestamp and stored, arrives data block On chain, then broadcasted in the whole network, complete storing process；
Described data sharing method includes the following steps carried out in order：
4) demand is generated
4.1) requesting party's user node request Requested Party user node sends specified location data, generates demand information；
4.2) public key of the local any one shared key centering of requesting party's user node selection sends address as demand, and with Corresponding private key generation digital signature；
4.3) requesting party's user node obtains the public key of a Requested Party user node in advance, and as destination address, need to Information and digital signature is asked to send to the address；
5) demand response
5.1) Requested Party user node receives the sharing request of requesting party's user node, is broadcast to the whole network；
5.2) each user node of the whole network reaches the legitimate verification of the request by common recognition mechanism；
5.3) after being verified, the demand information is recorded on shared block chain, and is broadcast to the whole network；
5.4) random key corresponding with demand information and shared key pair is locally extracted in Requested Party user node；
5.5) Requested Party user node randomly select storage sub-network in a memory node public key, and with requesting party user The public key encryption of node produces ciphertext；
5.6) Requested Party user node is by step 5.5) in ciphertext carry out Hash operation, and by by step 5.4) in extract Shared key centering private key encryption generation digital signature；
5.7) after Requested Party user node is encrypted using the public key address encryption random key of requesting party's user node Random key, is then packaged into packing data by the random key after ciphertext, digital signature and encryption and issues storage in the lump Any memory node of network；
6) share and reach
6.1) memory node that Requested Party user node is chosen receives the request of Requested Party user node, passes through digital signature With step 5.4) in shared key centering public key verifications identity and ciphertext correctness；
6.2) the private key decryption step 5.5 that the memory node that Requested Party user node is chosen passes through oneself) in ciphertext, obtain The public key address of requesting party's user node；
6.3) memory node that Requested Party user node is chosen according to demand information requirements win corresponding encryption data together with Random key after encryption, and the public key address of requesting party's user node is issued in the lump, the data of transmission pass through the mechanism of knowing together Record is on data block chain；
6.4) requesting party's user node receives the data that the memory node that Requested Party user node chooses is sent, by oneself Private key decryption obtain random key, then the position data of encryption is decrypted, obtains original shared data, share and complete.
2. the storage of route location data confidentiality and sharing method according to claim 1 based on block chain, its feature exist In：In step 1.2.2) and step 1.2.3) in, described generation root private key and the method for shared key pair comprise the following steps：
A)：Node users generate root private key according to accounts information, local to preserve；
B)：Node users generate the private key for user for shared key pair according to above-mentioned root private key；
C)：Node users generate client public key according to above-mentioned private key for user, finally obtain and are made up of private key for user and client public key Shared key pair.
3. the storage of route location data confidentiality and sharing method according to claim 1 based on block chain, its feature exist In：In step 5.2) in, described common recognition mechanism is reached method and comprised the following steps：
D)：Each requesting party's user node receives the demand information of Requested Party user node broadcast in shared sub-network；
E)：Each Requested Party user node participates in common recognition competition by equation below：Contribution degree=(online hours in nearest 7 days/ Network total flow in personal use flow in nearest 7 days of 168+/nearest 7 days) * shares number of times, contribution degree highest in nearest 7 days User node verifies this demand；
F the demand information is stored on shared block chain after the completion of) verifying, and gives flow reward；
G) decide that the current Requested Party user node for participating in checking must not participate in the common recognition within following 7 days, common recognition is completed.
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