CN107682364B - A kind of license chain privacy method of commerce - Google Patents
A kind of license chain privacy method of commerce Download PDFInfo
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- CN107682364B CN107682364B CN201711068708.0A CN201711068708A CN107682364B CN 107682364 B CN107682364 B CN 107682364B CN 201711068708 A CN201711068708 A CN 201711068708A CN 107682364 B CN107682364 B CN 107682364B
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- 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
- H04L63/045—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 hybrid encryption, i.e. combination of symmetric and asymmetric encryption
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q40/00—Finance; Insurance; Tax strategies; Processing of corporate or income taxes
- G06Q40/04—Trading; Exchange, e.g. stocks, commodities, derivatives or currency exchange
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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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
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0863—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving passwords or one-time passwords
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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
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
- H04L9/0869—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving random numbers or seeds
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Abstract
The invention discloses a kind of license chain privacy method of commerce, by configuring a monitoring node in license chain, all privacy transaction are all visible to the node, maintain the status information of all privacy transaction simultaneously, and host node and participation node may only read and the privacy that it is the transaction participant specified to trade, to not only control the visible range of privacy transaction, but also guarantee the monitoring traded to privacy.
Description
Technical field
The present invention relates to a kind of license chain privacy method of commerce
Background technique
Block chain is used as the Floor layer Technology of bit coin and well-known earliest.The concept of bit coin was born in 2008,
The block chain technology that its bottom is stripped out by people after 2014, is transformed, and after increasing new features, can be used as basis and sets
It applies and is suitable for more application scenarios.At this moment it has been born many similar to bit coin network, any node need not any license
It can be added or be detached from any time the block chain project of network, we term it publicly-owned chain projects.
Major financial institution begins to focus on block chain technology in the world, and thinks that block chain technology is possible to after analysis
The effect for being played in financial every field and reducing cost, increase efficiency.In the scene of financial field, because can not directly make
With performance is more low, data transparency discloses, the publicly-owned chain technology of the whole network book keeping operation, so there have been largely not offices in 2016
It is limited to financial industry, the various block chain projects based on permitting chain.With the development of time, originated from by bit coin, is made
To permit the block chain technology of chain to develop new feature each independently with the block chain technology as publicly-owned chain.
In the business demand of license chain, no image of Buddha bit coin equally allows all transaction participants all to see all friendships
Easy data, the requirement for data-privacy protection is unquestionable.We generally use object in traditional solution at present
The method for managing isolation, i.e. transaction data are only stored in the related respective physical space of participant.But block chain technology is brought
Advantage be exactly trade participant use " the same account book reached common understanding ", how guarantee " the same account book " premise
Under, protect transaction data privacy
It is on the one hand using PKI technology come to counterparty's identity in the Fabric framework of HyperLedger (super account book)
It is encrypted with transaction data, is on the other hand that the permission of transaction data is realized to the access control of transaction data using node
Isolation.It is specifically exactly by registration from encryption level, two-stage safety certificate system of trading and certificate of fair serial number are random
The privacy of identities protection for generating to realize counterparty.By title to intelligent contract, content, transaction content, transaction execution
State implements multi-level encryption, and only transaction related side possesses the secret protection for decrypting required key to realize transaction content.
But the transaction initiator in Fabric carries out transaction using the different corresponding private keys of Tcert (certificate of fair)
Signature, using the public key in the certificate of fair of transaction acceptance person as transacting targeted address.It is right in order to realize the privacy of transaction
It needs in different transaction using different certificates, certificate amount is big, and local storage space is high.In addition it is also necessary to based on TCA
Framework supports that TCA load is heavy.For node of auditing, need to utilize different TCertOwner_EncryptKey decryption cards
Information AES_EncryptTCertOwner_EncryptKey (TCertIndex is constant) in book, it is only normal after decryption
When number is correct, the recipient of transaction just can confirm that, it is computationally intensive.
Quorum is that " enterprise's block chain " platform is created by J.P. Morgan, is a part in publicly-owned chain field now, is permitted
Perhaps bank, enterprise or personal tissue create the ether mill network of a privately owned version for oneself.The participant of Quorum network can
To trade in confidence, so nobody is it can be seen that who but still can be enjoyed in the content with whose transaction and transaction
The data integrity and information security advantage of distributed block catenary system.
Initially there are two main features by Quorum.QuorumChain substitutes ether mill proof of work common recognition mechanism, eliminates
Demand to energy-intensive " digging mine " is established by ether mill joint founder Jeff Wilcke.Constellation is then
It is the privacy engine of Quorum, is to be developed by J.P.Morgan in inside.
Constellation is played a role by allowing intelligent contract to be encrypted and being distributed to the direct participant of transaction.
Although other several license platform chains use point-to-point or " off-chain " business logic, Quorum will encrypt intelligent contract
Hashed value (block chain term is called " digital finger-print ") be published on the block chain that owner shares, therefore owner may be used
To verify the integrality of whole system, and the internal work for spying upon each sensitive transactions is not had to.
Interacting message in the privacy engine of Quorum network seems that excessively redundancy not enough efficiently needs to carry out further
Simplify and improve.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of license chain privacy method of commerce.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of license chain privacy method of commerce, this method packet
It includes:
(1) user is traded by the privacy that JSON-RPC is sent；It include transaction participant public key in the privacy transaction, with
And the response time threshold value of transaction participant；
(2) host node receives the privacy transaction sent from user by JSON-RPC, according to privacy trade in include
Transaction participant public key determines participant node, determines monitoring node by reading system configuration information when system starts；So
It trades afterwards to privacy and carries out symmetric cryptography, and asymmetric add is carried out to the symmetrical keys that privacy is traded according to transaction participant public key
It is close；It finally will include that the package information of the transaction of encrypted privacy, encrypted key and nonce random number is sent to
Participant node and monitoring node；
(3) participant node receives the box information, and carries out decryption oprerations；If successful decryption, which is handed over
It easily signs, and the signing messages is wrapped in ACK message and returns to host node；Otherwise NACK message is returned；
(4) if host node is only collected into the ACK of all participant nodes in the response time threshold value as defined in privacy transaction
The privacy for being filled with all signature transaction is then broadcast to away, the common recognition for transaction by message；Otherwise it is hidden to terminate this
The easy execution of personal friendship.
The beneficial effects of the present invention are: not only execution efficiency is high by the present invention, is easy deployment and uses, while can also realize
Privacy achievees the purpose that supervision while transaction.
Detailed description of the invention
Fig. 1 is visibility schematic diagram of the present invention to privacy transaction；
Fig. 2 is privacy transaction execution flow chart；
Fig. 3 is conditional access control schematic diagram.
Specific embodiment
Chain is permitted to be made of a variety of nodes in the present invention, the common recognition that common open transaction is participated in business by all nodes
It (sequentially knowing together with implementing result including the execution to transaction) and executes；But trade for privacy, all license chain links
Point participates in its sequence common recognition in transaction block, and the execution of privacy transaction only occurs in participant node, while that trades holds
Row result is also only visible to participant.Simultaneously as the special positioning of license chain, generally requires the role of regulator, it is responsible for
Supervision and the execution for participating in All Activity (trading including all open transactions and privacy).The present invention passes through following 4 kinds of nodes
Realize the execution of privacy transaction:
(1) supervisory node: the node can participate in the execution of all privacy transaction and state saves.Permit chain to the section simultaneously
Knowing for point is to realize that the subsequent configuration can also regard business and need by reading static system configuration in system startup
The realistic existing support to dynamic configuration.Because the participant of every privacy transaction all may be a son for permitting all nodes of chain
Collection, but supervisory node must be a member of the subset, unless not configuring supervisory node when system starting.
(2) host node that the node from privacy of user transaction content is the transaction, the section host node: are firstly received
Point is responsible for the execution for carrying out the encryption of privacy transaction, distribution, receiving the operations such as feedback information privacy is pushed to trade.Any participation
The node of privacy transaction all can serve as host node, including supervisory node, and right to choose is by user's control.
(3) participant node: participant node is responsible for the execution of privacy transaction and the interaction of host node and this node is private
Stateful maintenance.
(4) non-participating node (unrelated side): non-participating node is not involved in the execution of privacy transaction, but participates in privacy transaction
Common recognition in transaction block.
As shown in figure 3, there is double states, open state (Public state) and privacy state on operation node
(Private state), when the transaction needed to be implemented is open transaction, then it can read or change the data in open state
The execution traded；Therefore, the execution state of open transaction is eventually written in block, then by all license chain nodes
It knows together to it.When the transaction needed to be implemented is that privacy is traded, then execute in accordance with the following steps:
Step 1: user's designated host, and privacy transaction is sent to host node by JSON-RPC；The privacy transaction
In comprising transaction participant public key, and the response time threshold value of transaction participant, response time threshold value generally passes through block height
To limit；
Step 2: host node trades to privacy after receiving the privacy sent from user by JSON-RPC transaction
Symmetric cryptography is carried out, and asymmetric encryption is carried out to the symmetrical keys that privacy is traded according to transaction participant public key；It finally will packet
Package information containing the transaction of encrypted privacy, encrypted key and nonce random number be sent to participant node and
Monitor node；Participant node therein is specified by the participant public key in privacy Transaction Information, and is monitored node and opened for system
It is obtained when dynamic by reading configuration information；
Step3: after other participant nodes receive the box information, being decrypted operation, if successful decryption,
It then signs to privacy transaction, and the signing messages is wrapped in ACK message and returns to host node；Otherwise NACK is returned
Message；
Step 4: host node can wait always the ACK message for collecting all participants, provide if host node is traded in privacy
Response time threshold value in be collected into the ACK messages of all participant nodes, then the privacy that will be filled with all signature is handed over
Easily it is broadcasted, so that non-participating node generates block, the common recognition for transaction；Otherwise the execution of privacy transaction is terminated.
If receiving the execution for terminating privacy transaction from the NACK message for participating in node, while throw exception
Information (because normal condition recipient will not decrypt and fail)；
If sending the transaction certainly, it is not collected into response time threshold value (being controlled by block limit)
All ACK messages then terminate the execution of the transaction；
In privacy method of commerce disclosed in this invention, the execution state of privacy transaction is only to participation node as it can be seen that simultaneously
It cannot know together to privacy state.Open transaction simultaneously cannot access privacy state, and the execution of open transaction does not interfere with
Data in privacy state account；And privacy transaction can be read open state, but cannot be to open state
Carry out write operation.
Claims (1)
1. a kind of license chain privacy method of commerce, which is characterized in that this method comprises:
(1) user is traded by the privacy that JSON-RPC is sent；Include transaction participant public key, Yi Jijiao in the privacy transaction
The response time threshold value of easy participant；
(2) host node receives the privacy transaction sent from user by JSON-RPC, according to privacy trade in include transaction
Participant public key determines participant node, determines monitoring node by reading system configuration information when system starts；It is raw first
It at symmetric key cryptography, is traded by the key to privacy and carries out symmetric cryptography, then according to transaction participant public key to privacy
The symmetrical keys of transaction carry out asymmetric encryption；It finally will include the transaction of encrypted privacy, encrypted key, and
The package information of nonce random number is sent to participant node and monitoring node；
(3) participant node receives the package information, and carries out decryption oprerations；If successful decryption, trade to the privacy
It signs, and the signing messages is wrapped in ACK message and returns to host node；Otherwise NACK message is returned；
(4) if host node is collected into the ACK message of all participant nodes in the response time threshold value as defined in privacy transaction,
The privacy for being filled with all signing messages transaction is broadcasted, the common recognition for transaction；Otherwise holding for privacy transaction is terminated
Row.
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| CN109493072B (en) * | 2018-10-24 | 2021-09-03 | 杭州趣链科技有限公司 | Privacy contract protection method based on alliance block chain |
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| CN109472601A (en) * | 2018-11-21 | 2019-03-15 | 北京蓝石环球区块链科技有限公司 | The block chain framework of privacy transaction can be supervised |
| CN109493060B (en) * | 2018-12-20 | 2020-08-18 | 莆田市烛火信息技术有限公司 | Account book accounting system based on block chain |
| CN109697670B (en) * | 2018-12-29 | 2021-06-04 | 杭州趣链科技有限公司 | Public link information shielding method without influence on credibility |
| WO2019170167A2 (en) * | 2019-05-31 | 2019-09-12 | Alibaba Group Holding Limited | System and method for providing privacy and security protection in blockchain-based private transactions |
| CN110335043B (en) * | 2019-07-03 | 2022-03-18 | 中国银行股份有限公司 | Transaction privacy protection method, device and system based on blockchain system |
| CN112950367B (en) * | 2019-12-11 | 2021-09-14 | 支付宝(杭州)信息技术有限公司 | Method and device for generating and executing intelligent contract transaction |
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