CN107276754A - A kind of method and device that private key is largely generated based on block chain - Google Patents
A kind of method and device that private key is largely generated based on block chain Download PDFInfo
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- CN107276754A CN107276754A CN201710557890.XA CN201710557890A CN107276754A CN 107276754 A CN107276754 A CN 107276754A CN 201710557890 A CN201710557890 A CN 201710557890A CN 107276754 A CN107276754 A CN 107276754A
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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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- 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
- H04L9/0866—Generation of secret information including derivation or calculation of cryptographic keys or passwords involving user or device identifiers, e.g. serial number, physical or biometrical information, DNA, hand-signature or measurable physical characteristics
-
- 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
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
- H04L9/3006—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy underlying computational problems or public-key parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using cryptographic hash functions
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
Abstract
The embodiment of the invention discloses a kind of method and device that private key is largely generated based on block chain, belong to block chain technical field, wherein including based on the method that block chain largely generates private key：Step S100, chooses a block in current time block chain；Step S101, extracts the cryptographic Hash H (k) and trading information data Dkn in block；Step S102, the cryptographic Hash H (k) in block and trading information data Dkn are spliced and Hash calculation is carried out, and generate random number；Step S103, based on the random number and identity information generation private key.The embodiment of the present invention carries out splicing generation random number to the cryptographic Hash in block and trading information data by choosing all blocks of current block chain simultaneously, then based on random number and identity information it is quick, largely generate private key.
Description
Technical field
The present invention relates to block chain technical field, more particularly to a kind of method and dress that private key is largely generated based on block chain
Put.
Background technology
Digital cash is referred to as DIGICCY, is English " Digital Currency " abbreviation.Digital cash is electronics
The sabstitute money of money-form, digital gold coin and password currency belongs to digital cash.Digital cash can not be fully equivalent to void
Intend the ideal money in the world, because it is often used in real exchange of goods and service, and be not solely restricted to network trip
In the Virtual Spaces such as play.
As digital cash is received more and more attention, corresponding digital wallet also becomes more and more important.
For a user it is most important be exactly digital wallet private key, have private key, user can just enter to the digital asset of oneself
Row transaction；If private key, which is cracked or passed into silence, means that the loss of digital asset.It is more and more general in digital cash
It is today, more and more using the people of digital wallet, then to be accomplished by generating more private keys.
The private key generation method that prior art is used is realized by rsa encryption (asymmetric encryption).RSA is a kind of
Public-key encryptosystem.So-called public-key encryptosystem is exactly to use different encryption key and decruption key, is one
Plant " it is computationally infeasible to go out decruption key by known encryption key derivation " cipher system.Given birth to using RSA cryptographic algorithms
The step of into private key, is as follows：
1. randomly choose two unequal prime number p and q；
2. and then calculate p and q product n；
3. calculate n Euler's function φ (n)；
4, an integer e is randomly choosed, condition is 1<e<φ (n), and e and φ (n) is relatively prime
5, e is calculated for φ (n) mould antielement d, and so-called " mould antielement " just refers to there is an integer d, can caused
The remainder that ed is removed by φ (n) is 1；
6, n and d is packaged into private key, and n and e are packaged into public key.
Two keys are ultimately generated, one is privacy key (private key), is preserved by user；Another is that public-key cryptography is (public
Key), can external disclosure, or even can be registered in the webserver.To improve encryption strength, RSA key is at least 500 bit lengths,
Typically recommend 1024.
There is following defect in itself in the private key generation method of prior art：
1. what it is due to RSA progress is all that big number is calculated, either realize that speed is always slowly by software or hardware
RSA defect.So in general this method is served only for low volume data encryption；
In 2.RSA encryption technologies, when knowing public key, it is packaged into the numeral that private key uses and is possible to what is be derived,
Also imply that private key there is a possibility that to be cracked, it is very dangerous.
Therefore, how quickly, large-scale generation private key and ensure the problem of security of private key is in the urgent need to concern.
The content of the invention
It is an object of the invention to provide a kind of method and device that private key is largely generated based on block chain, by choosing simultaneously
All blocks of current block chain, and the cryptographic Hash in each block and trading information data are carried out to splice generation random number,
Again based on random number and identity information generation private key, so as to reach the purpose for quickly generating a large amount of private keys.
To solve the above problems, the first aspect of the present invention provides a kind of side that private key is largely generated based on block chain
Method, including：
Step S100, chooses a block in current time block chain；Step S101, extracts the cryptographic Hash H in block
(k) with trading information data Dkn；Step S102, the cryptographic Hash H (k) in block and trading information data Dkn are spliced simultaneously
Hash calculation is carried out, random number is generated；Step S103, based on the random number and identity information generation private key.
Further, after the private key is generated, in addition to：Step S200, rower is entered to the block for having generated random number
Number, to obtain block number corresponding with each block；Step S201, creates identity information pass corresponding with block number
System, generates block data table.
Further, when entering line label to the block for having generated random number, carried out according to the time stamp T (k) of block
Label.
Further, this method also includes：All blocks present in current time block chain are chosen, each block is held
Row abovementioned steps S101-S103, with Mass production private key.
According to another aspect of the present invention there is provided a kind of device that private key is largely generated based on block chain, including：
Block chooses module, for choosing a block in current time block chain；Data extraction module, for extracting
Cryptographic Hash H (k) and trading information data Dkn in block；Random number generation module, for by the cryptographic Hash H (k) in block with
Trading information data Dkn is spliced and carries out Hash calculation, generates random number；Private key generation module, for based on random number
Private key is generated with identity information.
Further, the device also includes block data table generation terminal：Label module, for having generated random number
Block enters line label, to obtain block number corresponding with each block；Block data table generation module, for creating identity letter
The corresponding relation of breath and block number, generates block data table.
Further, when entering line label to the block for having generated random number, line label is entered according to the time stamp T (k) of block.
Further, in addition to：All blocks present in current time block chain are chosen, it is foregoing to each onblock executing
Step S101-S103, with Mass production private key.
The embodiment of the present invention by choosing all blocks of current block chain simultaneously, and to the cryptographic Hash in each block and
Trading information data carries out splicing generation random number, then based on random number and identity information generation private key.
The above-mentioned technical proposal of the present invention has following beneficial technique effect：
1. private key formation speed is fast；
2. private key generation quantity is more；
3. it is safe.The private key produced based on block chain will not again be generated by other people, it is ensured that each private key is
It is unique.
Brief description of the drawings
Fig. 1 is block structure schematic diagram in block chain network；
Fig. 2 is a kind of method flow diagram of method that private key is largely generated based on block chain according to the present invention；
Fig. 3 is the method flow diagram of the generation block data table step in the inventive method；
Fig. 4 is a kind of structural representation of device that private key is largely generated based on block chain according to the present invention；
Fig. 5 is the structural representation that terminal is generated according to block data table in apparatus of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to embodiment and join
According to accompanying drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright scope.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring this
The concept of invention.
Term is explained：Block chain is that a string of use cryptography methods are associated in the data block produced, each data block
The information of primary network transaction is contained, for verifying the validity (false proof) of its information and generating next block.
For narrow sense, block chain be it is a kind of sequentially in time by data block by sequentially be connected in the way of be combined into one
Plant linked data structure, and the distributed account book that can not be distorted He can not forge ensured in cryptography mode.Broadly, area
Block chain technology is to be verified using block linked data structure with data storage, know together algorithm to generate and more using distributed node
New data, the safety for ensureing using the mode of cryptography data transfer and access, utilize the intelligence being made up of automatized script code
Can contract program with a kind of brand-new distributed basis framework of peration data with calculating normal form.
Referring to Fig. 1, Fig. 1 is block structure schematic diagram in block chain network.
As shown in figure 1, three blocks of whole piece block chain main presentation, remaining block is omitted, H (k) represents each block
In cryptographic Hash, this cryptographic Hash is relevant with the data of previous block.
T (k) represents the timestamp in each block, and timestamp means the time that block is produced and the thing just occurred at that time
Part (such as transaction event) is kept down by permanent.
Dk1、Dk2、Dk3、Dk4…DknThe Transaction Information recorded in k-th of block is represented, includes the number of deals of current block
The All Activity record measured and generated during being created by the block verified.
Referring to Fig. 2, Fig. 2 is a kind of method flow of method that private key is largely generated based on block chain according to the present invention
Figure.
As shown in Fig. 2 a kind of according to an aspect of the invention, there is provided side that private key is largely generated based on block chain
Method, including：
Step S100, chooses a block in current time block chain.
Specifically, a sufficiently long block chain is constructed in block chain network, one in current time block chain is chosen
Individual block.
Step S101, extracts the cryptographic Hash H (k) and trading information data Dkn in block.
Wherein, trading information data Dkn includes exchange hour, intelligent contract, number of transaction, transaction record etc. Information Number
According to.
Step S102, the cryptographic Hash H (k) in block and trading information data Dkn are spliced and Hash calculation is carried out,
Generate random number.
Specifically, when the cryptographic Hash H (k) in block and trading information data Dkn being spliced, first by Transaction Information number
According to Dk1、Dk2、Dk3、Dk4…DknPacking integration is carried out, trading information data set is obtained；Again by trading information data set with
Cryptographic Hash H (k) in block is spliced and carries out Hash calculation, generates a string of random numbers.
Wherein, random number can be 256bits number.
Step S103, based on the random number and identity information generation private key.
Wherein, identity information is generally the identification card number of user.Private key directly can be given birth to by identity information and step S102
Into random number be spliced, it would however also be possible to employ existing algorithm to after splicing information calculate generate.
Referring to Fig. 3, Fig. 3 is the method flow diagram of the generation block data table step in the inventive method.
As shown in figure 3, after the private key is generated, in addition to：Step S200, rower is entered to the block for having generated random number
Number, to obtain block number corresponding with each block；Step S201, creates identity information pass corresponding with block number
System, generates block data table.
Wherein, when entering line label to the block for having generated random number, line label is entered according to the time stamp T (k) of block.
Block data represents such as following table：
This method also includes：All blocks present in current time block chain are chosen, to the foregoing step of each onblock executing
Rapid S101-S103, with Mass production private key.
Because the generation of block chain is parallel, multiple chains can be produced in a block chain network simultaneously, therefore choose
All blocks present in current time block chain, the cryptographic Hash H (k) in the block and transaction are extracted to each onblock executing
Information data Dkn, then it is spliced and Hash calculation is carried out, a large amount of random numbers can be generated in a short time, so as to
Generate a large amount of private keys simultaneously in a short time.
Referring to Fig. 4, Fig. 4 is the structural representation of the first device based on block chain generation private key according to the present invention
Figure.
As shown in figure 4, there is provided a kind of dress that private key is largely generated based on block chain according to another aspect of the present invention
Put, including：
Block chooses module 100, for choosing a block in current time block chain.
Data extraction module 101, for extracting the cryptographic Hash H (k) in block and trading information data Dkn.
Random number generation module 102, for the cryptographic Hash H (k) in block and trading information data Dkn to be spliced simultaneously
Hash calculation is carried out, random number is generated.
Private key generation module 103, for based on random number and identity information generation private key.
Referring to Fig. 5, Fig. 5 is the structural representation that terminal is generated according to block data table in apparatus of the present invention.
Wherein, the device also includes block data table generation terminal, and block data table generation terminal includes：
Label module 200, for entering line label to the block for having generated random number, to obtain area corresponding with each block
Block number.
Block data table generation module 201, the corresponding relation for creating identity information and block number generates block counts
According to table.
Wherein, when entering line label to the block for having generated random number, line label is entered according to the time stamp T (k) of block.
Wherein, in addition to：All blocks present in current time block chain are chosen, to each onblock executing abovementioned steps
S101-S103, with Mass production private key.
The application of private key under brief description.
Private key is mainly used in the transaction of digital cash.Whoso has private key, it is possible to pair corresponding with the private key
Digital cash in wallet address is operated
After generation private key, in addition it is also necessary to which private key is generated into public key by rivest, shamir, adelman.And also need to be based on
Public key generation block chain wallet address.So wallet owner could be traded using wallet.
Rivest, shamir, adelman is a kind of non-reversible algorithm, it is known that can calculate to obtain public key during private key by asymmetric encryption,
And during known public key can not backwards calculation go out private key.Rivest, shamir, adelman can be RSA Algorithm, Elgamal algorithms, knapsack
Algorithm, Rabin algorithms, D-H algorithms, ECC (elliptic curve encryption algorithm) etc..
Obtain after public key, the address version number of a byte is connected to public key Hash head, two then are carried out to it
Secondary Hash operation, using 4 bytes before result as the check value of public key Hash, is connected to its afterbody.The result of calculation is used
Predictive encoding method is encoded, and has just obtained wallet address.
One present invention of citing applies the scene in banking system：
Certain bank prepares a kind of digital RMB of distribution, then needs user configuring one using digital RMB to each
Individual digital wallet.Now the bank generates block chain according to trading activity all in a period of time in banking system, first chooses
All blocks in block chain, extract the cryptographic Hash H (k) and trading information data Dkn in each block, then by each block
Cryptographic Hash H (k) and trading information data Dkn spliced and carry out Hash calculation, generate random number, then based on it is described at random
Number and identity information generate private key, and method generates a large amount of private keys successively.Public key can be generated based on private key, can be given birth to based on public key
Into wallet address.After all user configuring digital wallets, line label is entered to the block for having generated random number, with obtain with
The corresponding block number of each block, creates the corresponding relation of the identity information and the block number, generates block data
Table.The bank preserves this block chain, and other business banks for having cooperation with this bank preserve storage identity information and block number
The block data table of one-to-one relationship.
When certain user loses the private key of oneself, he can handle the business of reporting the loss in certain business bank, in business bank's core
After real user's identity is errorless, searched according to the identity information of user in the block data table of database relative with this identity information
The block number answered, and by block number be sent to the bank application private key give for change.Corresponding old private key is sent in the bank
While returning, new based on the method generation one that block chain generates private key according to the application using the identity information of this user
Private key, new public key and new wallet address are generated by private key, that is, correspond to a new digital wallet, and re-start block mark
Number with block data table update.Now business bank goes to the digital cash in old wallet using old private key new digital money
In bag (because old private key has been lost, dangerous), and new private key is supplied to user.It can be seen that, generate in this way
Private key, lost even if private key and also do not interfere with the security of digital cash, regenerate new private key also relatively simple.
It is contemplated that a kind of method and device that private key is largely generated based on block chain of protection.By choosing current simultaneously
All blocks of block chain, and splicing generation random number, then base are carried out to the cryptographic Hash in each block and trading information data
In random number and identity information generation private key, so as to reach the purpose for quickly generating a large amount of private keys.
It should be appreciated that the above-mentioned embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, without being construed as limiting the invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.In addition, appended claims purport of the present invention
Covering the whole changes fallen into scope and border or this scope and the equivalents on border and repairing
Change example.
Claims (8)
1. a kind of method that private key is largely generated based on block chain, it is characterised in that including：
Step S100, chooses a block in current time block chain；
Step S101, extracts the cryptographic Hash H (k) and trading information data Dkn in the block；
Step S102, the cryptographic Hash H (k) in the block and trading information data Dkn are spliced and Hash calculation is carried out,
Generate random number；
Step S103, based on the random number and identity information generation private key.
2. according to the method described in claim 1, wherein after the private key is generated, in addition to：
Step S200, line label is entered to the block for having generated random number, to obtain block number corresponding with each block；
Step S201, creates the corresponding relation of the identity information and the block number, generates block data table.
3. method according to claim 2, wherein, when entering line label to the block for having generated random number, according to institute
The time stamp T (k) for stating block enters line label.
4. the method according to claim any one of 1-3, in addition to：Choose institute present in the current time block chain
There is block, to each onblock executing abovementioned steps S101-S103, with Mass production private key.
5. a kind of device that private key is largely generated based on block chain, it is characterised in that including：
Block chooses module (100), for choosing a block in current time block chain；
Data extraction module (101), for extracting the cryptographic Hash H (k) in the block and trading information data Dkn；
Random number generation module (102), for the cryptographic Hash H (k) in the block to be spliced with trading information data Dkn
And Hash calculation is carried out, generate random number；
Private key generation module (103), for based on the random number and identity information generation private key.
6. device according to claim 5, wherein, in addition to block data table generation terminal, the block data table life
Include into terminal：
Label module (200), it is corresponding with each block to obtain for entering line label to the block for having generated random number
Block number；
Block data table generation module (201), the corresponding relation for creating the identity information and the block number, generation
Block data table.
7. device according to claim 6, wherein, when entering line label to the block for having generated random number, according to institute
The time stamp T (k) for stating block enters line label.
8. the device according to claim any one of 5-7, it is characterised in that also include：Choose the current time block
All blocks present in chain, to each onblock executing abovementioned steps S101-S103, with Mass production private key.
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| CN108390762A (en) * | 2017-12-29 | 2018-08-10 | 北京欧链科技有限公司 | Data screening method and apparatus based on block chain |
| CN109102294A (en) * | 2018-08-24 | 2018-12-28 | 北京京东尚科信息技术有限公司 | Information transferring method and device |
| CN109347632A (en) * | 2018-10-23 | 2019-02-15 | 北京金山安全软件有限公司 | Block chain ID generation and use method, device, electronic equipment and storage medium |
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