CN108809652A - A kind of block chain encryption account book based on privacy sharing - Google Patents
A kind of block chain encryption account book based on privacy sharing Download PDFInfo
- Publication number
- CN108809652A CN108809652A CN201810491417.0A CN201810491417A CN108809652A CN 108809652 A CN108809652 A CN 108809652A CN 201810491417 A CN201810491417 A CN 201810491417A CN 108809652 A CN108809652 A CN 108809652A
- Authority
- CN
- China
- Prior art keywords
- key
- account book
- block chain
- data
- user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
- H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes
-
- 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
Abstract
The present invention discloses a kind of block chain encryption account book based on privacy sharing, including key management module, encryption data enter chain module, account book deciphering module；Key management module is responsible for the registration of user and key generates, and the segmentation of key is realized using Secret sharing techniques, is responsible for key information after collaboration storage is divided by each node of block chain, each node can only grasp incomplete key information；Encryption data enters chain module and is responsible for handling the upload request of data of user, by signature verification by the storage of user encryption data in block chain account book；Account book deciphering module is responsible for handling account book decoding request, only after block chain node reaches decryption common recognition, could synthesize decruption key, complete the decryption to encrypting account book.The present invention solves the problems, such as user key secure storage using Secret sharing techniques, and effectively avoids the unexpected leakage behavior of this private data of Partial Block chain node reconciliation, ensures the safety of user key storage and enhances the credibility of block catenary system.
Description
Technical field
The invention belongs to block chain technical fields, are related to a kind of block chain encryption account book based on privacy sharing.
Background technology
" block chain " technology is designed by a kind of artificial bit coin (digital cash) of this acute hearing in an assumed name
A kind of special database technology, from the perspective of data：Block chain is a kind of distributed data base (or for distribution
Shared general ledger), " distribution " here is not only presented as the distributed storage of data, is also embodied in the distributed recording of data
(being safeguarded come collective by system participant).Briefly, block chain can realize that the distributed recording of global metadata information (can be with
Recorded by system participant collective, rather than by the mechanism centralized recording of a centralization) (data can be stored with distributed storage
It in all nodes for participating in record data, rather than is centrally stored in the agency node of centralization).
From the perspective of effect：Block chain can generate a set of record time order and function, can not distorting, trusty
Database, this sets of data library is decentralization storage and data safety can be effectively ensured.In short, block chain is
Data structure a kind of that related data is stored in block, that block is combined in a manner of chain, it is suitble to storage letter
Data single, having precedence relationship, being verified in system, with cryptography ensure that data can not distort and can not be pseudo-
It makes.It can make participant build a consensus the event sequence and current state of the whole network transaction record.
The key point that block chain technology is related to includes：Trust, collective's maintenance, authentic data library, time are gone in decentralization
Stamp, asymmetric encryption etc..In systems, participant, also need not be by third party's machine without understanding other people background information
The guarantee or guarantee of structure, block chain technical guarantee system record the activity of value Transfer, are transmitted, are stored, last
Result must be believable.
The source of block chain technical principle can be summarized as a mathematical problem：Byzantium's general's problem, intension can be summarized
For：In the case where lacking central node trusty and channel trusty, each node being distributed in a network should be how
Reach common understanding.Block chain technology is solves the problems, such as that it is a kind of without trusting individual node, can also create common recognition network that this is provided
Method (common recognition protocol technology).Therefore the core of block chain Technology design is：
One：How a rigorous database is established so that the database can store the information of lower magnanimity, while again can
Ensure the integrality of database under the system of not centralized architecture？
Two：How to record and store down this rigorous database so that even if the certain nodes for participating in data record collapse
It bursts, we still can guarantee that the normal operation of entire Database Systems and information are complete？
Three：The database that this rigorous and full storage gets off how is set to become believable so that we can lack
Successfully prevent node from doing evil under the block chain environment of trust？
For these three core points, a whole set of complete, coherent database technology of block chain building carrys out reached purpose,
Solve the problems, such as that the technology of these three also becomes three most crucial big technologies of block chain.
But exactly because block chain is a public database, the record in each account is disclosed.It is such
It is open and clear to bring prodigious data-privacy problem, by taking assets transaction application scene as an example：When you accuse your account address
When knowing counterpart, other side can pass through all assets and historical trading in block chain query to this account.
To realize that data safety storage needs first to be distinguish the data type stored in block chain, different types of data
Required encryption storage strategy is different：(1) structureless the logical operations such as validation verification need not be carried out for those
Data are encrypted data after shared key between data related side；(2) those are needed to carry out validation verification
It is (such as common transaction data) and more complicated, need to carry out (e.g., triggering for certain logical operation using the data
The transaction data that intelligent contract executes), then it also needs to utilize some other cryptography tools.
The trust problem of block chain node is also to need the great difficult problem solved during system design is realized, one to making
Disliking node does not have the block catenary system of Precaution Tactics can not safe handling.In addition, how effectively to store the privacy letter of user
Breath is not also what block catenary system must take into consideration by unexpected leakage.The technical program is the trust problem solved between block chain node
A kind of block chain encryption account book technology based on privacy sharing is proposed with privacy information secure storage problem.The account book of block chain
It is stored after information encryption, single node can not decrypt account book by the key information after segmentation, only decrypt demand by all areas
Decruption key can be just synthesized after block catenary system node common recognition, which solves the decruption key bursting tube in key management
Reason problem.Block chain node will be transferred to store respectively after Secret splitting by Secret sharing techniques, effectively prevent storing in system
The hidden danger that is leaked of key.Moreover, account book decrypting process triggers intelligent contract after decryption common recognition is reached and executes automatically
It completes, account book flows to fully controllable after account book decrypting process may be implemented and decrypt.
End to End Encryption：Block chain based on End to End Encryption technology encrypts account book
Encipherment protection is that cryptographic algorithm, reconciliation notebook data is utilized to be encrypted, and realizes and only has related side that can decrypt
Check encryption data.It not only needs that account book storage is encrypted in block catenary system, account book transmit process is also required to encrypt.
Therefore only accomplish that end to end security is only safely and effectively.If completing encryption dependent on platform or intermediate node, these sections
Point can obtain private data.
Corresponding Encryption Algorithm include symmetric cryptography (such as：AES256, SM4) and asymmetric encryption is (such as:RSA2048,
SM2).Symmetric cryptography speed is fast, but relatively easily cracks, and rivest, shamir, adelman is then opposite.So general in practical application
Symmetric cryptography and rivest, shamir, adelman can be used in combination.Digital envelope is exactly one of example, it leads to symmetric key
Cross asymmetric encryption (i.e.：Have public key and private key two) result distribution symmetric key method, can solve a secret
Multiple analogues are given in data sharing, accomplish that only these opponents can decrypt and check, other people can not know data clear text.
Disadvantage：1. if key is abused by other people, data-privacy if, does not know where to begin, and lacks the guarantor of the safety to key
Barrier.2. though realize the secret protection of data on chain, it can cause block chain node that can not be directed to the encryption data and carry out logic
Operation.
Homomorphic cryptography：Block chain based on homomorphic cryptography technology encrypts account book
Homomorphic cryptography is the cryptological technique of the computational complexity theory based on difficult math question.To the number Jing Guo homomorphic cryptography
According to being handled to obtain an output, this output is decrypted, result handles the original of unencryption with Same Way
Output that data obtain is the result is that the same.If a kind of Encryption Algorithm can find corresponding behaviour for multiplication and addition
Make, is just called full homomorphic encryption algorithm.
Data upload block catenary system after homomorphic cryptography, and user is only by encryption data external disclosure so that block chain
Though node cannot obtain specific data content, the simple logic processing to data can be realized.
Disadvantage：Until there is presently no real available full homomorphic encryption algorithms.Block account book data after homomorphic cryptography,
Block catenary system can only realize that simple logical process, block catenary system can not obtain data particular content, nothing to encryption data
Method provides the service of higher logical requirements for block catenary system user.
Invention content
The purpose of the present invention is to provide a kind of, and the block chain based on privacy sharing encrypts account book.
The technical problems to be solved by the invention include：
1. preventing the malicious decryption behavior that single block chain node is directed to account book data, to protect user secret.Block chain
System only after all chain nodes reach decryption common recognition, could successfully synthesize decruption key, decrypt account book data.
2. under the premise of ensureing user data privacy, the availability of block chain encryption account book data is improved.
3. while improving account book availability of data, the safety of user key storage is improved.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of block chain encryption account book based on privacy sharing, including key management module, encryption data enter chain module, account
This deciphering module；
Wherein, the key management module is responsible for the registration of user and key generates, and utilizes the threshold secret sharing side (k, n)
Case realizes the segmentation of key, is responsible for key information after collaboration storage is divided by each node of block chain, each node can only be grasped not
Complete key information；
The encryption data enter chain module be responsible for handle user upload request of data, by signature verification by user add
In ciphertext data storage to block chain account book；
The account book deciphering module is responsible for handling account book decoding request, only after block chain node reaches decryption common recognition,
Decruption key could be synthesized, the decryption to encrypting account book is completed.
Block chain encryption account book needs installing the private key segmentation contract generation for realizing Secret sharing techniques in advance
It is realized in the block chain environment of the closely sealed about code of code reconciliation；Meanwhile block catenary system must fulfil decryption common recognition agreement ahead of schedule
It agrees on.
The key management module generates a pair of public and private key using the close SM2 algorithms of state, right with the close SM4 algorithms generation one of state
Claim key, the public private key pair and symmetric key are sent to user；At the same time, client public key letter is disclosed in block catenary system
Breath；User may be selected to utilize symmetric key encryption private data using symmetric cryptography mode, and asymmetric encryption mode also may be selected
Private data is encrypted, while being signed to private data using digital signature technology using private key.
The block catenary system can be by triggering the Secret splitting contract code based on Secret sharing techniques, and segmentation decryption is close
Key information is to realize the secure storage of key；If user's selection encrypts user data using asymmetric encryption techniques, by user
Private key be divided into one by one incomplete secure store in block catenary system；If user's selection is encrypted using symmetric cryptosystem
User data, then by the symmetric key of user be divided into one by one incomplete secure store in block catenary system；Block chain
System is by the segmentation of key to realize that privacy sharing, each block chain node are only responsible for one incomplete key of storage.
The encryption data enters in chain module, and user can use his selected cipher mode encryption data, and profit in advance
It is encryption data addition signature with digital signature technology, encryption data is then uploaded to block catenary system again；Block catenary system
Each node receives encryption data, and after client public key Information Authentication signature disclosed in block catenary system, encryption data is deposited
In storage to block chain account book.
The account book deciphering module realizes the synthesis of decruption key based on Secret sharing techniques in decrypting contract code；When
Block catenary system execute decryption common recognition agreement reach decryption common recognition after, system pass through trigger block catenary system decryption contract code
Restore key and completes the secure decryption process of data.
Beneficial effects of the present invention：
The present invention is based on Secret sharing techniques to decrypt behavior with the account book of specification block catenary system, realizes to block chain not
Trusted node malice reveals the strick precaution of account book privacy behavior, is closed using Secret sharing techniques, intelligence in conjunction with block catenary system characteristic
The about secure storage and management of technology and common recognition protocol realization user key；
Private data information can be obtained to improve account under the premise of ensureing account book security of private data using the present invention
The subsequent expansion of block chain functionally is realized in the availability of this information, help；Block catenary system utilizes Secret sharing techniques simultaneously
It is stored again after segmentation user key, ensure that the part for surprisingly having revealed user key even if respective nodes, will not cause
The leakage of entire user key；Only after each node of block catenary system reaches decryption common recognition, block catenary system can just merge point
Each key part after cutting obtains decryption key decryption block account book information；Account book decrypting process is by intelligent contract code
It is automatic to execute the control, it can be achieved that account book decrypting process and account book information flow direction；
The present invention solves the problems, such as user key secure storage using Secret sharing techniques, and effectively prevents part
The unexpected leakage behavior of this private data of block chain node reconciliation has ensured the safety of user key storage and has enhanced block
The credibility of catenary system.
Description of the drawings
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is the structure chart that a kind of block chain based on privacy sharing of the present invention encrypts account book；
Fig. 2 is the flow chart of key management module of the present invention；
Fig. 3 is key management information flow graph of the present invention；
Fig. 4 is the flow chart that encryption data of the present invention enters chain module；
Fig. 5 is that encryption data of the present invention enters chain information flow graph；
Fig. 6 is the flow chart of account deciphering module of the present invention；
Fig. 7 is that account book of the present invention decrypts information flow direction figure；
Fig. 8 is account book solution confidential information detailed maps of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is only a part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
All other embodiment that logical technical staff is obtained without creative efforts belongs to what the present invention protected
Range.
A kind of block chain encryption account book based on privacy sharing, needs to install for realizing Secret sharing techniques in advance
Private key segmentation contract code conciliate in the block chain environment of closely sealed about code and realize.Meanwhile block catenary system must be complete in advance
At agreing on for decryption common recognition agreement.The technical program includes key management module, encryption data enters chain module, account book is decrypted
Module.Fig. 1 is the block chain encryption account book system structure based on privacy sharing.
Wherein, key management module is responsible for the registration of user and key generates, and key is realized using Secret sharing techniques
Segmentation is responsible for key information after collaboration storage is divided by each node of block chain, and each node can only grasp incomplete key letter
Breath；Specific key management flow is shown in Fig. 2.
The realization of Secret splitting uses (k, n) threshold secret sharing scheme in key management module, there is following two thresholdings
Secret sharing scheme is available：
1) threshold secret sharing scheme of Shamir
Realize that (k, n) threshold secret sharing scheme, the program are specifically made of following three phases using polynomial interopolation：
(1) initial phase.Select finite field FqIf participant's collection is combined into P={ P1, P2..., Pn, k is threshold value, close
Key information [s ∈ Fq].Select [Fq] on n mutually different nonzero element x1, x2..., xn, these elements are disclosed.
(2) the privacy sharing stage.Randomly choose FqOn k-1 order polynomials [g (x)=a0+a1x+ ...+ak-1xk-1 ,]
Wherein a0=s, remaining ai it is random be selected from Fq.[si=g (xi), i=1,2 ..., n ,] is calculated separately by (xi, si) conduct
Sub-secret is distributed to member Pi。
(3) the secret reconstruction stage.The sub-secret that arbitrary k member can be held is shared, and Lagrange is passed through
Interpolation formula recovers secret information s.
2) Blakley threshold secret sharing schemes
The program realizes the scheme of another (k, n) threshold secret sharing using geometry method.Its basic thought is
Key value regards the point in a k dimension space as, and the sub-secret for being distributed to different participants is different k-1 n-dimensional subspace ns, when k
When participant shares its sub-secret, the only intersection point of these subspaces can be obtained, to obtain key value.Specifically retouch
It states as follows：
(1) initial phase.Select finite field FqIf participant's collection is combined into P={ P1, P2..., Pn, k is threshold value, secret
Confidential information [s ∈ Fq].Select FqOn k member systems of linear equations be：
a11x1+a12x2+…a1kxk=b1a21x1+a22x2+…a2kxk=b2…an1x1+an2x2+…ankxk=bn
Equation group can be denoted as [AX=B], and when selection matrix [A] needs to meet two conditions：The arbitrary k lines of [A]
It is unrelated；Secret value s is the solution of the above system of linear equations.
(2) the privacy sharing stage.Each equation is considered as the subspace of k-1 dimensions, is each block chain link
Point distributes such a equation.
(3) the secret reconstruction stage.The k member systems of linear equations of a full rank can be obtained when wherein k node simultaneous equations,
Therefore only value can be solved, obtains secret value s.If being less than k equations simultaneousness, it is unable to get only solution.
The key generated after user registration success is divided into multiple secrets, and the secret after these segmentations is distributed to block
In chain node, key management information flow direction is shown in Fig. 3.
Encryption data enter chain module be responsible for handle user upload request of data, by signature verification by user encryption number
According in storage to block chain account book, specific data enter chain flow and see Fig. 4.
Encryption data enters chain module and receives the encryption data that user is transmitted, and the upload data being verified are stored in block
In chain account book, data enter chain information flow direction and see Fig. 5.
Account book deciphering module is responsible for handling account book decoding request, only after block chain node reaches decryption common recognition, ability
Decruption key is synthesized, the decryption to encrypting account book is completed, specific account book decryption flow is shown in Fig. 6.
Account book deciphering module receiving and deciphering asks and common recognition result is sent to key management module, after chain node will be divided
Key is sent to key management module for synthesizing decruption key；It is sent to account book deciphering module after decruption key synthesis, it is complete
At the decryption of account book data, account book decryption information flow direction is shown in Fig. 7, Fig. 8.
Key management module is based on cryptological technique and generates a pair of public and private key and a symmetric key, the public private key pair and right
Key is claimed to be sent to user.At the same time, client public key information is disclosed in block catenary system.User may be selected using symmetrical
Cipher mode utilizes symmetric key encryption private data, and asymmetric encryption mode also may be selected and encrypt private data, use simultaneously
Private key signs to private data using digital signature technology.
Block catenary system can be by triggering the Secret splitting contract code based on Secret sharing techniques, segmentation decruption key letter
Breath is to realize the secure storage of key.If user's selection encrypts user data using asymmetric encryption techniques, by private key for user
Be divided into one by one incomplete secure store in block catenary system；If user's selection encrypts user using symmetric cryptosystem
Data, then by the symmetric key of user be divided into one by one incomplete secure store in block catenary system.Block catenary system
By the segmentation of key to realize that privacy sharing, each block chain node are only responsible for one incomplete key of storage.
Encryption data enters in chain module, and user can use his selected cipher mode encryption data in advance, and utilize number
Word signature technology is encryption data addition signature, and encryption data is then uploaded to block catenary system again.Block catenary system respectively saves
Point receive encryption data, by disclosed in block catenary system client public key Information Authentication signature after, by encryption data store to
In block chain account book.
Account book deciphering module realizes the synthesis of decruption key based on Secret sharing techniques in decrypting contract code.Work as block
After catenary system execution decryption common recognition agreement reaches decryption common recognition, system is restored by the decryption contract code of triggering block catenary system
Key and the secure decryption process for completing data.Therefore any decoding request without block catenary system common recognition will not be allowed to,
It ensure that the privacy of encryption account book data, and the decrypting process for executing using intelligent contract technology account book automatically can be effective
Control account book decrypting process and account book flow direction.
The technical program decrypts behavior based on Secret sharing techniques with the account book of specification block catenary system, realizes to block
The strick precaution of the insincere malicious behaviors of nodes leakage account book privacy behavior of chain, Secret sharing techniques, intelligence are utilized in conjunction with block catenary system characteristic
It can secure storage and management of the contract technology with common recognition protocol realization user key.
Privacy can be obtained under the premise of ensureing account book security of private data using the block catenary system of the technical program
For data information to improve the availability of account book information, the subsequent expansion of block chain functionally is realized in help.Block catenary system simultaneously
It is stored again after dividing user key using Secret sharing techniques, ensure that and surprisingly revealed the one of user key even if respective nodes
Part will not cause the leakage of entire user key.Only after each node of block catenary system reaches decryption common recognition, block chain
System can just merge each key part after segmentation, obtain decryption key decryption block account book information.Account book decrypting process according to
The control, it can be achieved that account book decrypting process and account book information flow direction is executed automatically by intelligent contract code.The technical program profit
It solves the problems, such as user key secure storage with Secret sharing techniques, and effectively prevents Partial Block chain node reconciliation sheet
The unexpected leakage behavior of private data has ensured the safety of user key storage and has enhanced the credible journey of block catenary system
Degree.
It the key problem in technology point of the present invention and is intended to protect and includes a little：It is realized based on privacy sharing combination block chain intelligence contract close
Key management；The safety encryption storage of distributed data is realized based on privacy sharing；It is known together and is assisted based on privacy sharing combination block chain
View realizes the secret protection of block chain account book data.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the present invention
Principle and practical application, to enable skilled artisan to be best understood by and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (6)
1. a kind of block chain based on privacy sharing encrypts account book, which is characterized in that enter comprising key management module, encryption data
Chain module, account book deciphering module；
Wherein, the key management module is responsible for the registration of user and key generates, and utilizes (k, n) threshold secret sharing scheme real
The segmentation of existing key is responsible for key information after collaboration storage is divided by each node of block chain, and each node can only be grasped imperfect
Key information；
The encryption data enter chain module be responsible for handle user upload request of data, by signature verification by user encryption number
According in storage to block chain account book；
The account book deciphering module is responsible for handling account book decoding request, only after block chain node reaches decryption common recognition, ability
Decruption key is synthesized, the decryption to encrypting account book is completed.
2. a kind of block chain based on privacy sharing according to claim 1 encrypts account book, which is characterized in that the block chain
Encryption account book needs installing the closely sealed about code of private key segmentation contract code reconciliation for realizing Secret sharing techniques in advance
Block chain environment in realize；Meanwhile block catenary system must fulfil agreing on for decryption common recognition agreement ahead of schedule.
3. a kind of block chain based on privacy sharing according to claim 1 encrypts account book, which is characterized in that the key
Management module generates a pair of public and private key using the close SM2 algorithms of state, and a symmetric key, the public and private key are generated with the close SM4 algorithms of state
Pair and symmetric key be sent to user；At the same time, client public key information is disclosed in block catenary system；User may be selected to make
Symmetric key encryption private data is utilized with symmetric cryptography mode, asymmetric encryption mode also may be selected and encrypt private data, together
When signed to private data using digital signature technology using private key.
4. a kind of block chain based on privacy sharing according to claim 3 encrypts account book, which is characterized in that the block
Catenary system can be by triggering the Secret splitting contract code based on Secret sharing techniques, and segmentation decryption key information is to realize key
Secure storage；If user's selection encrypts user data using asymmetric encryption techniques, private key for user is divided into one by one
Incomplete secure store is in block catenary system；If user's selection encrypts user data using symmetric cryptosystem, will use
The symmetric key at family be divided into one by one incomplete secure store in block catenary system；Point that block catenary system passes through key
It cuts to realize that privacy sharing, each block chain node are only responsible for one incomplete key of storage.
5. a kind of block chain based on privacy sharing according to claim 1 encrypts account book, which is characterized in that the encryption
Data enter in chain module, and user can use his selected cipher mode encryption data in advance, and be using digital signature technology
Encryption data addition signature, is then uploaded to block catenary system by encryption data again；Each node of block catenary system receives encryption number
According to, by disclosed in block catenary system client public key Information Authentication signature after, encryption data is stored into block chain account book.
6. a kind of block chain based on privacy sharing according to claim 1 encrypts account book, which is characterized in that the account book
Deciphering module realizes the synthesis of decruption key based on Secret sharing techniques in decrypting contract code；When block catenary system executes solution
After close common recognition agreement reaches decryption common recognition, system is by triggering the decryption contract code recovery key of block catenary system and completing number
According to secure decryption process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491417.0A CN108809652B (en) | 2018-05-21 | 2018-05-21 | Block chain encrypted account book based on secret sharing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810491417.0A CN108809652B (en) | 2018-05-21 | 2018-05-21 | Block chain encrypted account book based on secret sharing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108809652A true CN108809652A (en) | 2018-11-13 |
| CN108809652B CN108809652B (en) | 2021-07-23 |
Family
ID=64091328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810491417.0A Active CN108809652B (en) | 2018-05-21 | 2018-05-21 | Block chain encrypted account book based on secret sharing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108809652B (en) |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109672529A (en) * | 2019-01-07 | 2019-04-23 | 苏宁易购集团股份有限公司 | A kind of method and system for going anonymization of combination block chain and privacy sharing |
| CN109687979A (en) * | 2019-03-06 | 2019-04-26 | 郑州师范学院 | A kind of ring signatures method, apparatus, equipment and medium |
| CN109697365A (en) * | 2018-12-20 | 2019-04-30 | 深圳市元征科技股份有限公司 | Information processing method and block chain node, electronic equipment |
| CN109728910A (en) * | 2018-12-27 | 2019-05-07 | 北京永恒纪元科技有限公司 | A kind of efficient thresholding distribution elliptic curve key generates and endorsement method and system |
| CN109951453A (en) * | 2019-02-26 | 2019-06-28 | 符安文 | A kind of safe encryption method based on block chain |
| CN110058820A (en) * | 2019-04-23 | 2019-07-26 | 武汉汇迪森信息技术有限公司 | Data safety write-in, deletion, read method and device based on Solid-state disc array |
| CN110162996A (en) * | 2019-04-23 | 2019-08-23 | 上海链度科技有限公司 | Ballot system, method and voting terminal based on block chain |
| CN110189143A (en) * | 2019-04-26 | 2019-08-30 | 华中科技大学 | A kind of marketing authenticity tag verification method and system based on block chain |
| CN110430039A (en) * | 2019-07-19 | 2019-11-08 | 瑞纳智能设备股份有限公司 | A kind of production management system and method based on block chain |
| CN110445845A (en) * | 2019-07-17 | 2019-11-12 | 苏州同济区块链研究院有限公司 | It is a kind of distribution account book in the system architecture based on boss's account book |
| CN110555783A (en) * | 2019-07-18 | 2019-12-10 | 中国南方电网有限责任公司 | block chain-based power marketing data protection method and system |
| CN110971390A (en) * | 2019-11-29 | 2020-04-07 | 杭州云象网络技术有限公司 | Fully homomorphic encryption method for intelligent contract privacy protection |
| CN111159306A (en) * | 2020-04-02 | 2020-05-15 | 支付宝(杭州)信息技术有限公司 | Information publishing method and device based on block chain and computer equipment |
| CN111277412A (en) * | 2020-02-18 | 2020-06-12 | 暨南大学 | Data security sharing system and method based on block chain key distribution |
| CN111368309A (en) * | 2018-12-26 | 2020-07-03 | 阿里巴巴集团控股有限公司 | Information processing method, system and equipment |
| CN111435241A (en) * | 2019-01-15 | 2020-07-21 | 费希尔-罗斯蒙特系统公司 | Machine-to-machine transactions using distributed ledgers in a process control system |
| CN111460468A (en) * | 2020-02-27 | 2020-07-28 | 山东公链信息科技有限公司 | Block chain encryption and decryption method and system based on fault-tolerant mechanism |
| CN111586011A (en) * | 2020-04-29 | 2020-08-25 | 中国联合网络通信集团有限公司 | Information sharing method and device |
| CN111698198A (en) * | 2019-03-13 | 2020-09-22 | 国际商业机器公司 | Secret generation and share distribution |
| CN111858519A (en) * | 2020-07-10 | 2020-10-30 | 北京远景视点科技有限公司 | System and method for sharing confidential data on block chain |
| CN111865988A (en) * | 2020-07-22 | 2020-10-30 | 山东华普信息科技有限公司 | Certificate-free key management method, system and terminal based on block chain |
| WO2020258125A1 (en) * | 2019-06-27 | 2020-12-30 | 云图有限公司 | Private key recovery method and apparatus, collaborative address creation method and apparatus, collaborative address signing method and apparatus, and storage medium |
| CN112241553A (en) * | 2020-10-27 | 2021-01-19 | 上海万向区块链股份公司 | Block chain privacy protection method and system based on multi-account book architecture |
| CN112287392A (en) * | 2020-11-23 | 2021-01-29 | 广东科学技术职业学院 | Intelligent contract implementation method and system with privacy information protection function |
| CN112398648A (en) * | 2020-11-05 | 2021-02-23 | 华控清交信息科技(北京)有限公司 | Key management method and device for key management |
| CN112437089A (en) * | 2020-11-26 | 2021-03-02 | 交控科技股份有限公司 | Train control system key management method and device based on block chain |
| CN112507021A (en) * | 2020-11-23 | 2021-03-16 | 厦门产业技术研究院 | Block chain-based electronic contract management method and device and equipment |
| CN112511515A (en) * | 2020-11-19 | 2021-03-16 | 成都无右区块链科技有限公司 | Chain number cube for data chaining |
| CN112529573A (en) * | 2020-08-31 | 2021-03-19 | 上海添玑网络服务有限公司 | Combined block chain threshold signature method and system |
| CN112685760A (en) * | 2021-01-08 | 2021-04-20 | 浙江泰科数联信息技术有限公司 | Financial data privacy processing and sharing method capable of authorizing on block chain |
| CN112818061A (en) * | 2021-02-02 | 2021-05-18 | 中国工商银行股份有限公司 | Unstructured data storage method and block chain system |
| CN112927080A (en) * | 2021-03-05 | 2021-06-08 | 广东电网有限责任公司 | Block chain technology-based multi-party information sharing method for power industry |
| CN112966022A (en) * | 2021-03-10 | 2021-06-15 | 安徽航天信息科技有限公司 | Information query method, device and system for data transaction platform |
| CN112989321A (en) * | 2021-03-02 | 2021-06-18 | 北京思特奇信息技术股份有限公司 | Secret sharing algorithm-based key management method and system |
| CN113094731A (en) * | 2021-04-15 | 2021-07-09 | 西南大学 | Block chain privacy protection method based on different distribution recombination scheme |
| CN113098697A (en) * | 2021-06-08 | 2021-07-09 | 清华大学 | Block chain data writing and accessing method and device |
| CN113259124A (en) * | 2021-06-08 | 2021-08-13 | 清华大学 | Block chain data writing and accessing method and device |
| TWI737956B (en) * | 2019-01-14 | 2021-09-01 | 開曼群島商現代財富控股有限公司 | Threshold signature system based on secret sharing and method thereof |
| CN113364576A (en) * | 2021-05-28 | 2021-09-07 | 湘潭大学 | Data encryption evidence storing and sharing method based on block chain |
| CN113438205A (en) * | 2021-05-31 | 2021-09-24 | 东软集团股份有限公司 | Block chain data access control method, node and system |
| CN113536388A (en) * | 2020-04-16 | 2021-10-22 | 中移物联网有限公司 | Data sharing method and system based on block chain |
| CN113656828A (en) * | 2021-07-20 | 2021-11-16 | 北京理工大学 | Block chain privacy protection method based on lattice code and oriented to financial system transaction |
| CN113946878A (en) * | 2021-10-15 | 2022-01-18 | 星矿科技(北京)有限公司 | Accounting method |
| CN115051853A (en) * | 2022-06-10 | 2022-09-13 | 广东技术师范大学 | Digital collection platform system |
| CN117353919A (en) * | 2023-12-01 | 2024-01-05 | 卓望数码技术（深圳）有限公司 | Data security storage method and system based on secret key sharing algorithm |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170083860A1 (en) * | 2015-02-26 | 2017-03-23 | Skuchain, Inc. | Tracking unitization occurring in a supply chain |
| CN106548345A (en) * | 2016-12-07 | 2017-03-29 | 北京信任度科技有限公司 | The method and system of block chain private key protection are realized based on Secret splitting |
| CN106982205A (en) * | 2017-03-01 | 2017-07-25 | 中钞信用卡产业发展有限公司北京智能卡技术研究院 | Digital asset treating method and apparatus based on block chain |
| CN107623569A (en) * | 2017-09-30 | 2018-01-23 | 矩阵元技术（深圳）有限公司 | Block chain key escrow and restoration methods, device based on Secret sharing techniques |
| CN107666388A (en) * | 2016-07-28 | 2018-02-06 | 郑珂威 | Block chain information encryption method based on complete homomorphic cryptography method |
-
2018
- 2018-05-21 CN CN201810491417.0A patent/CN108809652B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170083860A1 (en) * | 2015-02-26 | 2017-03-23 | Skuchain, Inc. | Tracking unitization occurring in a supply chain |
| CN107666388A (en) * | 2016-07-28 | 2018-02-06 | 郑珂威 | Block chain information encryption method based on complete homomorphic cryptography method |
| CN106548345A (en) * | 2016-12-07 | 2017-03-29 | 北京信任度科技有限公司 | The method and system of block chain private key protection are realized based on Secret splitting |
| CN106982205A (en) * | 2017-03-01 | 2017-07-25 | 中钞信用卡产业发展有限公司北京智能卡技术研究院 | Digital asset treating method and apparatus based on block chain |
| CN107623569A (en) * | 2017-09-30 | 2018-01-23 | 矩阵元技术（深圳）有限公司 | Block chain key escrow and restoration methods, device based on Secret sharing techniques |
Cited By (62)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109697365A (en) * | 2018-12-20 | 2019-04-30 | 深圳市元征科技股份有限公司 | Information processing method and block chain node, electronic equipment |
| CN109697365B (en) * | 2018-12-20 | 2023-04-07 | 深圳市元征科技股份有限公司 | Information processing method, block chain node and electronic equipment |
| CN111368309A (en) * | 2018-12-26 | 2020-07-03 | 阿里巴巴集团控股有限公司 | Information processing method, system and equipment |
| CN111368309B (en) * | 2018-12-26 | 2024-03-29 | 阿里巴巴集团控股有限公司 | Information processing method, system and equipment |
| CN109728910A (en) * | 2018-12-27 | 2019-05-07 | 北京永恒纪元科技有限公司 | A kind of efficient thresholding distribution elliptic curve key generates and endorsement method and system |
| WO2020143246A1 (en) * | 2019-01-07 | 2020-07-16 | 苏宁云计算有限公司 | Method and system for de-anonymization by combining blockchain and secret sharing |
| CN109672529A (en) * | 2019-01-07 | 2019-04-23 | 苏宁易购集团股份有限公司 | A kind of method and system for going anonymization of combination block chain and privacy sharing |
| TWI737956B (en) * | 2019-01-14 | 2021-09-01 | 開曼群島商現代財富控股有限公司 | Threshold signature system based on secret sharing and method thereof |
| CN111435241A (en) * | 2019-01-15 | 2020-07-21 | 费希尔-罗斯蒙特系统公司 | Machine-to-machine transactions using distributed ledgers in a process control system |
| CN109951453A (en) * | 2019-02-26 | 2019-06-28 | 符安文 | A kind of safe encryption method based on block chain |
| CN109687979A (en) * | 2019-03-06 | 2019-04-26 | 郑州师范学院 | A kind of ring signatures method, apparatus, equipment and medium |
| CN111698198A (en) * | 2019-03-13 | 2020-09-22 | 国际商业机器公司 | Secret generation and share distribution |
| CN110162996A (en) * | 2019-04-23 | 2019-08-23 | 上海链度科技有限公司 | Ballot system, method and voting terminal based on block chain |
| CN110058820A (en) * | 2019-04-23 | 2019-07-26 | 武汉汇迪森信息技术有限公司 | Data safety write-in, deletion, read method and device based on Solid-state disc array |
| CN110189143A (en) * | 2019-04-26 | 2019-08-30 | 华中科技大学 | A kind of marketing authenticity tag verification method and system based on block chain |
| WO2020258125A1 (en) * | 2019-06-27 | 2020-12-30 | 云图有限公司 | Private key recovery method and apparatus, collaborative address creation method and apparatus, collaborative address signing method and apparatus, and storage medium |
| CN110445845A (en) * | 2019-07-17 | 2019-11-12 | 苏州同济区块链研究院有限公司 | It is a kind of distribution account book in the system architecture based on boss's account book |
| CN110445845B (en) * | 2019-07-17 | 2021-10-15 | 苏州同济区块链研究院有限公司 | System based on main and sub account books in distributed account book |
| CN110555783A (en) * | 2019-07-18 | 2019-12-10 | 中国南方电网有限责任公司 | block chain-based power marketing data protection method and system |
| CN110555783B (en) * | 2019-07-18 | 2023-08-29 | 中国南方电网有限责任公司 | Block chain-based electric power marketing data protection method and system |
| CN110430039A (en) * | 2019-07-19 | 2019-11-08 | 瑞纳智能设备股份有限公司 | A kind of production management system and method based on block chain |
| CN110971390A (en) * | 2019-11-29 | 2020-04-07 | 杭州云象网络技术有限公司 | Fully homomorphic encryption method for intelligent contract privacy protection |
| CN111277412B (en) * | 2020-02-18 | 2023-03-24 | 暨南大学 | Data security sharing system and method based on block chain key distribution |
| CN111277412A (en) * | 2020-02-18 | 2020-06-12 | 暨南大学 | Data security sharing system and method based on block chain key distribution |
| CN111460468A (en) * | 2020-02-27 | 2020-07-28 | 山东公链信息科技有限公司 | Block chain encryption and decryption method and system based on fault-tolerant mechanism |
| CN111159306A (en) * | 2020-04-02 | 2020-05-15 | 支付宝(杭州)信息技术有限公司 | Information publishing method and device based on block chain and computer equipment |
| WO2021197105A1 (en) * | 2020-04-02 | 2021-10-07 | 支付宝(杭州)信息技术有限公司 | Blockchain-based information release |
| CN113536388B (en) * | 2020-04-16 | 2023-02-28 | 中移物联网有限公司 | Data sharing method and system based on block chain |
| CN113536388A (en) * | 2020-04-16 | 2021-10-22 | 中移物联网有限公司 | Data sharing method and system based on block chain |
| CN111586011A (en) * | 2020-04-29 | 2020-08-25 | 中国联合网络通信集团有限公司 | Information sharing method and device |
| CN111858519B (en) * | 2020-07-10 | 2023-08-01 | 北京远景视点科技有限公司 | System and method for sharing confidential data on blockchain |
| CN111858519A (en) * | 2020-07-10 | 2020-10-30 | 北京远景视点科技有限公司 | System and method for sharing confidential data on block chain |
| CN111865988B (en) * | 2020-07-22 | 2022-10-18 | 山东华普信息科技有限公司 | Certificate-free key management method, system and terminal based on block chain |
| CN111865988A (en) * | 2020-07-22 | 2020-10-30 | 山东华普信息科技有限公司 | Certificate-free key management method, system and terminal based on block chain |
| CN112529573A (en) * | 2020-08-31 | 2021-03-19 | 上海添玑网络服务有限公司 | Combined block chain threshold signature method and system |
| CN112241553A (en) * | 2020-10-27 | 2021-01-19 | 上海万向区块链股份公司 | Block chain privacy protection method and system based on multi-account book architecture |
| CN112398648A (en) * | 2020-11-05 | 2021-02-23 | 华控清交信息科技(北京)有限公司 | Key management method and device for key management |
| CN112398648B (en) * | 2020-11-05 | 2023-12-29 | 华控清交信息科技(北京)有限公司 | Key management method and device for key management |
| CN112511515B (en) * | 2020-11-19 | 2023-03-10 | 成都无右区块链科技有限公司 | Chain number cube for data chaining |
| CN112511515A (en) * | 2020-11-19 | 2021-03-16 | 成都无右区块链科技有限公司 | Chain number cube for data chaining |
| CN112507021A (en) * | 2020-11-23 | 2021-03-16 | 厦门产业技术研究院 | Block chain-based electronic contract management method and device and equipment |
| CN112287392A (en) * | 2020-11-23 | 2021-01-29 | 广东科学技术职业学院 | Intelligent contract implementation method and system with privacy information protection function |
| CN112437089A (en) * | 2020-11-26 | 2021-03-02 | 交控科技股份有限公司 | Train control system key management method and device based on block chain |
| CN112685760A (en) * | 2021-01-08 | 2021-04-20 | 浙江泰科数联信息技术有限公司 | Financial data privacy processing and sharing method capable of authorizing on block chain |
| CN112818061A (en) * | 2021-02-02 | 2021-05-18 | 中国工商银行股份有限公司 | Unstructured data storage method and block chain system |
| CN112989321A (en) * | 2021-03-02 | 2021-06-18 | 北京思特奇信息技术股份有限公司 | Secret sharing algorithm-based key management method and system |
| CN112927080A (en) * | 2021-03-05 | 2021-06-08 | 广东电网有限责任公司 | Block chain technology-based multi-party information sharing method for power industry |
| CN112966022B (en) * | 2021-03-10 | 2024-04-05 | 安徽航天信息科技有限公司 | Information query method, device and system of data transaction platform |
| CN112966022A (en) * | 2021-03-10 | 2021-06-15 | 安徽航天信息科技有限公司 | Information query method, device and system for data transaction platform |
| CN113094731A (en) * | 2021-04-15 | 2021-07-09 | 西南大学 | Block chain privacy protection method based on different distribution recombination scheme |
| CN113364576A (en) * | 2021-05-28 | 2021-09-07 | 湘潭大学 | Data encryption evidence storing and sharing method based on block chain |
| CN113364576B (en) * | 2021-05-28 | 2022-07-22 | 湘潭大学 | Data encryption evidence storing and sharing method based on block chain |
| CN113438205A (en) * | 2021-05-31 | 2021-09-24 | 东软集团股份有限公司 | Block chain data access control method, node and system |
| CN113259124A (en) * | 2021-06-08 | 2021-08-13 | 清华大学 | Block chain data writing and accessing method and device |
| CN113098697A (en) * | 2021-06-08 | 2021-07-09 | 清华大学 | Block chain data writing and accessing method and device |
| CN113656828A (en) * | 2021-07-20 | 2021-11-16 | 北京理工大学 | Block chain privacy protection method based on lattice code and oriented to financial system transaction |
| CN113946878A (en) * | 2021-10-15 | 2022-01-18 | 星矿科技(北京)有限公司 | Accounting method |
| CN113946878B (en) * | 2021-10-15 | 2024-04-09 | 星矿科技(北京)有限公司 | Accounting method |
| CN115051853B (en) * | 2022-06-10 | 2023-07-21 | 广东技术师范大学 | Digital collection platform system |
| CN115051853A (en) * | 2022-06-10 | 2022-09-13 | 广东技术师范大学 | Digital collection platform system |
| CN117353919A (en) * | 2023-12-01 | 2024-01-05 | 卓望数码技术（深圳）有限公司 | Data security storage method and system based on secret key sharing algorithm |
| CN117353919B (en) * | 2023-12-01 | 2024-03-26 | 卓望数码技术（深圳）有限公司 | Data security storage method and system based on secret key sharing algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108809652B (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108809652A (en) | A kind of block chain encryption account book based on privacy sharing | |
| EP3862956B1 (en) | Secure multiparty loss resistant storage and transfer of cryptographic keys for blockchain based systems in conjunction with a wallet management system | |
| US10785019B2 (en) | Data transmission method and apparatus | |
| US10979221B2 (en) | Generation of keys of variable length from cryptographic tables | |
| CN107086915B (en) | Data transmission method, data sending end and data receiving end | |
| CN107040369A (en) | Data transmission method, apparatus and system | |
| US20110145576A1 (en) | Secure method of data transmission and encryption and decryption system allowing such transmission | |
| CN110289968B (en) | Private key recovery method, collaborative address creation method, collaborative address signature device and storage medium | |
| CN109543434B (en) | Block chain information encryption method, decryption method, storage method and device | |
| CN111431897B (en) | Multi-attribute mechanism attribute-based encryption method with tracking function for cloud-assisted Internet of things | |
| CN112367170B (en) | Data hiding query security sharing system and method based on multi-party security calculation | |
| EP3476078B1 (en) | Systems and methods for authenticating communications using a single message exchange and symmetric key | |
| NO20093259A1 (en) | encryption | |
| CN109831430A (en) | Safely controllable efficient data sharing method and system under a kind of cloud computing environment | |
| CN111541725A (en) | Block chain all-in-one machine, password acceleration card thereof, and key management method and device | |
| CN108768647B (en) | Random number generation method for block chain | |
| JP2016158189A (en) | Change direction with key control system and change direction with key control method | |
| CN104158880A (en) | User-end cloud data sharing solution | |
| CN112740615A (en) | Multi-party computed key management | |
| CA3056814A1 (en) | Symmetric cryptographic method and system and applications thereof | |
| Li et al. | Privacy-aware secure anonymous communication protocol in CPSS cloud computing | |
| CN110716724B (en) | Method and device for realizing privacy block chain based on FPGA | |
| CN109347923A (en) | Anti- quantum calculation cloud storage method and system based on unsymmetrical key pond | |
| US11563566B2 (en) | Key splitting | |
| Sharma et al. | Analysis of AES Encryption with ECC |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |