CN110020538A - Transaction data encryption and decryption method and system based on block chain - Google Patents
Transaction data encryption and decryption method and system based on block chain Download PDFInfo
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- CN110020538A CN110020538A CN201910300323.5A CN201910300323A CN110020538A CN 110020538 A CN110020538 A CN 110020538A CN 201910300323 A CN201910300323 A CN 201910300323A CN 110020538 A CN110020538 A CN 110020538A
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
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Abstract
The present disclosure discloses the transaction data encryption and decryption method and systems based on block chain, node is initiated in transaction, is encrypted using the common parameter that the encryption/decryption element of node itself is initiated in transaction, transaction initiates node private key and made an appointment with transaction acceptance node to transaction data；Meanwhile node private key is initiated to transaction using the common parameter made an appointment with transaction acceptance node and is encrypted；Encrypted transaction data is issued in block chain network using the intelligent contract and the private key of node is initiated in encrypted transaction；Transaction acceptance node is decrypted, the private key of node is initiated in the transaction after being decrypted using the encryption/decryption element of transaction acceptance node itself based on the private key that the common parameter that node has been made an appointment initiates node to encrypted transaction is initiated with transaction；It initiates the private key of node using transaction and initiates the common parameter that node has been made an appointment with transaction to encrypt encrypted transaction data, the transaction data after being decrypted.
Description
Technical field
This disclosure relates to the transaction data encryption and decryption method and system based on block chain.
Background technique
The statement of this part is only to refer to background technique relevant to the disclosure, not necessarily constitutes the prior art.
In implementing the present disclosure, following technical problem exists in the prior art in inventor:
Block chain is the novel of the computer technologies such as Distributed Storage, point-to-point transmission, common recognition mechanism, Encryption Algorithm
Application model.
Block chain (Blockchain), is a key concept of bit coin, it is substantially the number of a decentralization
According to library, while the Floor layer Technology as bit coin, it is a string using the associated data block generated of cryptography method, each number
According to the information of a batch bit coin network trading is contained in block, for verifying the validity (anti-fake) of its information and generating next
A block.
The existing scheme that multi transaction is realized by block chain, lacks effective encryption and decryption measure, for example participant C thinks
It is to be understood that the transaction amount of participant A and participant B, if transaction amount lacks reasonable encryption measures, participant C is being gathered around
Under the premise of having interdependent node, so that it may directly read the transaction amount not encrypted, cause the quotient of participant A and participant B
The leakage of industry data.
Summary of the invention
In order to solve the deficiencies in the prior art, present disclose provides the transaction data encipher-decipher method based on block chain and it is
System；
In a first aspect, present disclose provides the transaction data encipher-decipher methods based on block chain；
Transaction data encipher-decipher method based on block chain, comprising:
In each node of block chain, encryption/decryption element is set；Each node deployment private key；Intelligence is disposed in block chain network
It can contract；
Transaction initiate node, using transaction initiate node itself encryption/decryption element, transaction initiate node private key and with friendship
The common parameter that easy receiving node has been made an appointment encrypts transaction data；Meanwhile using preparatory with transaction acceptance node
The common parameter appointed is initiated node private key to transaction and is encrypted；It is issued in block chain network using the intelligent contract
The private key of node is initiated in encrypted transaction data and encrypted transaction；
Transaction acceptance node, it is preparatory based on node is initiated with transaction using the encryption/decryption element of transaction acceptance node itself
The private key that the common parameter appointed initiates node to encrypted transaction is decrypted, and node is initiated in the transaction after being decrypted
Private key；Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted friendship
Easy data are encrypted, the transaction data after being decrypted.
Second aspect, present disclose provides the transaction data encrypting and deciphering systems based on block chain；
Transaction data encrypting and deciphering system based on block chain, comprising:
Setup module: encryption/decryption element is set in each node of block chain；Each node deployment private key；Block chain network
The intelligent contract of upper deployment；
Encrypting module initiates the encryption/decryption element of node itself using transaction, node private key is initiated in transaction and is connect with transaction
The common parameter that node has been made an appointment is received to encrypt transaction data；Meanwhile it making an appointment using with transaction acceptance node
Good common parameter is initiated node private key to transaction and is encrypted；Encryption is issued in block chain network using the intelligent contract
Transaction data and encrypted transaction afterwards initiates the private key of node；
Deciphering module is made an appointment using the encryption/decryption element of transaction acceptance node itself based on node is initiated with transaction
The private key that good common parameter initiates node to encrypted transaction is decrypted, and the private of node is initiated in the transaction after being decrypted
Key；Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted number of deals
According to being encrypted, the transaction data after being decrypted.
Compared with prior art, the beneficial effect of the disclosure is:
Because using the combination of encrypted transaction data and node private key encryption, make the process of decryption that two links be needed
It completes, first link is that private key is decrypted, and second link is to be solved using the private key after decryption to transaction data
Close, being used cooperatively for two links keeps transaction data safer, will not be disliked easily by the third party other than both parties
Meaning obtains.
Because during encryption, joined the common parameter of both parties' agreement, in this way, even if thering is third party to want
The data of both parties are solved, the third for needing to obtain common parameter has permission just now to be understood, and does not otherwise allow Review Transaction number
According to being safe and reliable for both parties.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the method flow diagram of the embodiment one of one or more embodiments；
Fig. 2 is the functional block diagram of the embodiment two of one or more embodiments.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment one, present disclose provides the transaction data encipher-decipher methods based on block chain；
As shown in Figure 1, the transaction data encipher-decipher method based on block chain, comprising:
In each node of block chain, encryption/decryption element is set；Each node deployment private key；Intelligence is disposed in block chain network
It can contract；
Transaction initiate node, using transaction initiate node itself encryption/decryption element, transaction initiate node private key and with friendship
The common parameter that easy receiving node has been made an appointment encrypts transaction data；Meanwhile using preparatory with transaction acceptance node
The common parameter appointed is initiated node private key to transaction and is encrypted；It is issued in block chain network using the intelligent contract
The private key of node is initiated in encrypted transaction data and encrypted transaction；
Transaction acceptance node, it is preparatory based on node is initiated with transaction using the encryption/decryption element of transaction acceptance node itself
The private key that the common parameter appointed initiates node to encrypted transaction is decrypted, and node is initiated in the transaction after being decrypted
Private key；Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted friendship
Easy data are encrypted, the transaction data after being decrypted.
It is to be understood that enciphering and deciphering algorithm used by the encryption/decryption element can be one of following enciphering and deciphering algorithm
It is or a variety of: DES (Data Encryption Standard) data encryption standard algorithm, symmetric cryptography AES, asymmetric encryption
ECC, eap-message digest MD5 or digital signature DSA.
As one or more embodiments, the method also includes: the first node of block chain receive buyer by its with sell
First common parameter of the Contracts Cargo Deal just signed and both parties' agreement, the first node of block chain are received in cargo and buy
After bill of sale, encrypted using the encryption/decryption element of itself to deal contract is obtained；Used in deal contract ciphering process
Key be the first common parameter and first node private key summation；Encryption/decryption element is using the first common parameter to first simultaneously
The private key of node is encrypted；
Encrypted deal contract and encrypted first node are issued in block chain network using the intelligent contract
Private key；
As one or more embodiments, the method also includes: the second node of block chain receives the seller for itself and object
Second common parameter of delivery entrustment agreement and the seller and logistics company agreement that stream company signs, the second node of block chain exist
After receiving delivery entrustment agreement, the delivery entrustment agreement of acquisition is encrypted using the encryption/decryption element of itself；Delivery commission
Used key is the summation of the private key of the second common parameter and second node during agreement is encrypted；Encryption and decryption simultaneously
Unit is encrypted using private key of second common parameter to second node；
Encrypted delivery entrustment agreement and encrypted second are issued in block chain network using the intelligent contract
The private key of node；
As one or more embodiments, the method also includes: the third node of block chain receives logistics company for goods
Object is insured the third common parameter of request and logistics company and insurance company's agreement, and the third node of block chain is thrown receiving cargo
After protecting request, the request of insuring of the cargo of acquisition is encrypted using the encryption/decryption element of itself；Cargo, which is insured, to be requested to be encrypted
During used key be third common parameter and third node private key summation；Encryption/decryption element utilizes the simultaneously
Three common parameters encrypt the private key of third node；
Encrypted cargo is issued in block chain network using the intelligent contract to insure request and encrypted third
The private key of node；
As one or more embodiments, the method also includes: the fourth node of block chain is asked according to insurance company
Ask, from block chain network obtain cargo insure request and encrypted third node private key, the encryption and decryption list of fourth node
Member is decrypted the private key of encrypted third node using the third common parameter of insurance company's input, obtains third node
Private key；The encryption/decryption element of fourth node is using the third common parameter of insurance company's input and the private key of third node to goods
Object request of insuring is decrypted, and obtains cargo and insures request；It insures from the cargo after decryption and obtains the base of logistics company in requesting
The essential information of this information and the seller；
As one or more embodiments, the method also includes: insurance companies according to the essential information of logistics company, from
Logistics company obtains the second common parameter of the seller and logistics company agreement；The fourth node of block chain is asked according to insurance company
It asks, the private key of encrypted delivery entrustment agreement and encrypted second node is obtained from block chain network；Fourth node
The second common parameter that encryption/decryption element is inputted using insurance company is first decrypted the private key of encrypted second node, obtains
To the private key of second node；
The encryption/decryption element of the fourth node of block chain is using after the private key pair encryption of the second common parameter and second node
Delivery entrustment agreement be decrypted, the delivery entrustment agreement after being decrypted；
As one or more embodiments, the method also includes: insurance companies according to the essential information of the seller, from the seller
Obtain the first common parameter of the seller and buyer's agreement；The fourth node of block chain is according to the request of insurance company, from block chain
The private key of encrypted deal contract and encrypted first node is obtained on network；The encryption/decryption element of fourth node utilizes guarantor
First common parameter of dangerous company's input is first decrypted the private key of encrypted first node, obtains the private of first node
Key；The encryption/decryption element of fourth node is carried out using the deal contract after the private key pair encryption of the first common parameter and first node
Decryption, the deal contract after being decrypted；
As one or more embodiments, the method also includes: finally, insurance company is according in delivery entrustment agreement
The dealing amount of money in the amount of money and deal contract is entrusted, formulates insurance premium, insurance company is by insurance premium and third common parameter
It is uploaded to the fourth node of block chain, the fourth node of block chain utilizes the encryption/decryption element of itself after receiving insurance premium
Insurance premium is encrypted；Used key is third common parameter and fourth node during insurance premium is encrypted
Private key summation；The encryption/decryption element of fourth node is added using private key of the third common parameter to fourth node simultaneously
It is close；
Prepared insurance premium and encrypted fourth node are issued in block chain network using the intelligent contract
Private key；
As one or more embodiments, the method also includes: third node the asking according to logistics company of block chain
It asks, the private key of insurance premium and encrypted fourth node, the encryption/decryption element benefit of third node is obtained from block chain network
The private key of encrypted fourth node is decrypted with the third common parameter that logistics company inputs, obtains the private of fourth node
Key；The encryption/decryption element of third node solves the insurance premium of encryption using the private key and third common parameter of fourth node
It is close, the insurance premium after being decrypted；Logistics company transfers accounts insurance premium to insurance company, and transaction terminates.
Embodiment two, present disclose provides the transaction data encrypting and deciphering systems based on block chain；
As shown in Fig. 2, the transaction data encrypting and deciphering system based on block chain, comprising:
Setup module: encryption/decryption element is set in each node of block chain；Each node deployment private key；Block chain network
The intelligent contract of upper deployment；
Encrypting module initiates the encryption/decryption element of node itself using transaction, node private key is initiated in transaction and is connect with transaction
The common parameter that node has been made an appointment is received to encrypt transaction data；Meanwhile it making an appointment using with transaction acceptance node
Good common parameter is initiated node private key to transaction and is encrypted；Encryption is issued in block chain network using the intelligent contract
Transaction data and encrypted transaction afterwards initiates the private key of node；
Deciphering module is made an appointment using the encryption/decryption element of transaction acceptance node itself based on node is initiated with transaction
The private key that good common parameter initiates node to encrypted transaction is decrypted, and the private of node is initiated in the transaction after being decrypted
Key；Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted number of deals
According to being encrypted, the transaction data after being decrypted.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. the transaction data encipher-decipher method based on block chain, characterized in that include:
In each node of block chain, encryption/decryption element is set；Each node deployment private key；Intelligence is disposed in block chain network to close
About；
Node is initiated in transaction, initiates the encryption/decryption element of node itself using transaction, node private key is initiated in transaction and is connect with transaction
The common parameter that node has been made an appointment is received to encrypt transaction data；Meanwhile it making an appointment using with transaction acceptance node
Good common parameter is initiated node private key to transaction and is encrypted；Encryption is issued in block chain network using the intelligent contract
Transaction data and encrypted transaction afterwards initiates the private key of node；
Transaction acceptance node is made an appointment using the encryption/decryption element of transaction acceptance node itself based on node is initiated with transaction
The private key that good common parameter initiates node to encrypted transaction is decrypted, and the private of node is initiated in the transaction after being decrypted
Key；Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted number of deals
According to being encrypted, the transaction data after being decrypted.
2. the method as described in claim 1, characterized in that the method also includes: the first node of block chain receives buyer
First common parameter of Contracts Cargo Deal and both parties' agreement that it is signed with the seller, the first node of block chain are received in
To after Contracts Cargo Deal, encrypted using the encryption/decryption element of itself to deal contract is obtained；Deal contract ciphering process
Used in key be the first common parameter and first node private key summation；Encryption/decryption element utilizes the first public ginseng simultaneously
The private key of several pairs of first nodes encrypts；
The private of encrypted deal contract and encrypted first node is issued in block chain network using the intelligent contract
Key.
3. method according to claim 2, characterized in that the method also includes: the second node of block chain receives the seller
Second common parameter of delivery entrustment agreement and the seller and logistics company agreement that itself and logistics company are signed, the of block chain
Two nodes encrypt the delivery entrustment agreement of acquisition using the encryption/decryption element of itself after receiving delivery entrustment agreement；
Used key is the summation of the private key of the second common parameter and second node during entrustment agreement of delivering is encrypted；Together
When encryption/decryption element encrypted using private key of second common parameter to second node；
Encrypted delivery entrustment agreement and encrypted second node are issued in block chain network using the intelligent contract
Private key.
4. method as claimed in claim 3, characterized in that the method also includes: the third node of block chain receives logistics
Company insures cargo the third common parameter of request and logistics company and insurance company's agreement, and the third node of block chain is being received
After insuring request to cargo, the request of insuring of the cargo of acquisition is encrypted using the encryption/decryption element of itself；Cargo, which is insured, asks
Seeking used key during being encrypted is the summation of third common parameter and the private key of third node；Encryption and decryption list simultaneously
Member is encrypted using private key of the third common parameter to third node；
Encrypted cargo is issued in block chain network using the intelligent contract to insure request and encrypted third node
Private key.
5. method as claimed in claim 4, characterized in that the method also includes: the fourth node of block chain is according to insurance
The request of company, from block chain network obtain cargo insure request and encrypted third node private key, fourth node
The private key of encrypted third node is decrypted in the third common parameter that encryption/decryption element is inputted using insurance company, obtains
The private key of third node；The encryption/decryption element of fourth node using insurance company's input third common parameter and third node
Cargo request of insuring is decrypted in private key, obtains cargo and insures request；It insures from the cargo after decryption and obtains logistics in requesting
The essential information of company and the essential information of the seller.
6. method as claimed in claim 5, characterized in that the method also includes: insurance companies according to the base of logistics company
This information obtains the second common parameter of the seller and logistics company agreement from logistics company；The fourth node of block chain is according to guarantor
The request of dangerous company obtains the private key of encrypted delivery entrustment agreement and encrypted second node from block chain network；
The encryption/decryption element of fourth node is using the second common parameter of insurance company's input first to the private key of encrypted second node
It is decrypted, obtains the private key of second node；
The encryption/decryption element of the fourth node of block chain utilizes the hair after the private key pair encryption of the second common parameter and second node
Goods entrustment agreement is decrypted, the delivery entrustment agreement after being decrypted.
7. method as claimed in claim 6, characterized in that the method also includes: insurance companies according to the basic letter of the seller
Breath obtains the first common parameter that the seller and buyer arrange from the seller；The fourth node of block chain according to the request of insurance company,
The private key of encrypted deal contract and encrypted first node is obtained from block chain network；The encryption and decryption list of fourth node
Member is first decrypted the private key of encrypted first node using the first common parameter of insurance company's input, obtains first segment
The private key of point；The encryption/decryption element of fourth node is closed using the dealing after the private key pair encryption of the first common parameter and first node
It is same to be decrypted, the deal contract after being decrypted.
8. the method for claim 7, characterized in that the method also includes: finally, insurance company entrusts according to delivery
The commission amount of money in agreement and the dealing amount of money in deal contract, formulate insurance premium, and insurance company is by insurance premium and third
Common parameter is uploaded to the fourth node of block chain, and the fourth node of block chain utilizes adding for itself after receiving insurance premium
Decryption unit encrypts insurance premium；Insurance premium be encrypted during used key be third common parameter and
The summation of the private key of fourth node；The encryption/decryption element of fourth node is using third common parameter to the private key of fourth node simultaneously
It is encrypted；
The private of prepared insurance premium and encrypted fourth node is issued in block chain network using the intelligent contract
Key.
9. method according to claim 8, characterized in that the method also includes: the third node of block chain is according to logistics
The request of company, obtains the private key of insurance premium and encrypted fourth node from block chain network, and third node adds solution
The private key of encrypted fourth node is decrypted in the third common parameter that close unit is inputted using logistics company, obtains the 4th
The private key of node；The encryption/decryption element of third node is using the private key and third common parameter of fourth node to the insurance premium of encryption
With being decrypted, the insurance premium after being decrypted；Logistics company transfers accounts insurance premium to insurance company, and transaction terminates.
10. the transaction data encrypting and deciphering system based on block chain, characterized in that include:
Setup module: encryption/decryption element is set in each node of block chain；Each node deployment private key；Block chain network top
Affix one's name to intelligent contract；
Encrypting module, using transaction initiate node itself encryption/decryption element, transaction initiate node private key and with transaction acceptance section
The common parameter that point has been made an appointment encrypts transaction data；Meanwhile using having made an appointment with transaction acceptance node
Common parameter is initiated node private key to transaction and is encrypted；It is issued in block chain network using the intelligent contract encrypted
The private key of node is initiated in transaction data and encrypted transaction；
Deciphering module, using the encryption/decryption element of transaction acceptance node itself, based on what is made an appointment with transaction initiation node
The private key that common parameter initiates node to encrypted transaction is decrypted, and the private key of node is initiated in the transaction after being decrypted；
Using the common parameter that the private key of node is initiated in transaction and has been made an appointment with transaction initiation node to encrypted transaction data
It is encrypted, the transaction data after being decrypted.
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| CN110020538B (en) | 2020-11-13 |
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