CN105959307A - Existence certification and authentication service method and system based on block chain technology - Google Patents
Existence certification and authentication service method and system based on block chain technology Download PDFInfo
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- CN105959307A CN105959307A CN201610513011.9A CN201610513011A CN105959307A CN 105959307 A CN105959307 A CN 105959307A CN 201610513011 A CN201610513011 A CN 201610513011A CN 105959307 A CN105959307 A CN 105959307A
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- block chain
- standard message
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- new standard
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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
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3236—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
- H04L9/3242—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 involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
Abstract
The invention provides an existence certification and authentication service method based on block chain technology. The method comprises the following steps: setting at least a pair of public/private keys for each user in a public block chain, carrying out a hash operation on a digital article to generate a hash value, using the private key to sing the hash value, carrying out the hash operation on the signature to generate a new hash value, and embedding the new hash value in the standard message to generate a new standard message; before broadcasting the new standard message to the public block chain, setting a sender of the new standard message as the address of the user, broadcasting the new standard message, if the new standard message is packaged by the user and the new standard message is confirmed, returning the hash value of the new standard message, and if the block where the new standard message is located is confirmed, returning the hash value of the block; and if the new standard message is not packaged the user, and the legal existence time of the new standard message is overdue, marking the new standard message as ineffective, and reconstructing the new standard message.
Description
Technical field
The present invention relates to exist proves and authentication service field, demonstrate,proves particularly to existence based on block chain technology
Bright and authentication service method and system.
Background technology
In the last hundred years, the existence time of certain part article (such as music, educational background, document etc.), conjunction how are proved
The study hotspot that method and possessory ownership are always in sociological problems, along with the arrival of information age,
Article (such as music, educational background, document), more and more by digitized, greatly facilitate it and propagate, with
These the most many problems expose out, how to prove a document, the integrity of a piece of music works, conjunction
Method and the time of generation, protect the legitimate rights and interests of client not encroached on, therefore create numeral label
The methods such as name, time-stamping service, the certification needing third party's trust authority without exception of these methods participates in,
If third party's trusted certificate authority is by assault, or the tampering that the third-party institution is actively all will make
The legitimate rights and interests of client are encroached on, in 2008, and the block chain technology the occurred with bit coin
Once achieve the service of decentration from mathematics, cryptography angle, it is not necessary to the third-party institution (Central Bank)
Participation, reliable and secure achieves the generation of currency, transaction, due to people's not believing the third-party institution
Appoint, cause the demand for services to going to center to get more and more, but the most do not occur being provided that decentration
Article exist prove and the service of certification.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes existence proof based on block chain technology and authentication service
Method and system.
The present invention proposes a kind of existence proof based on block chain technology and authentication service method, described block chain
For publicly-owned block chain, including:
Step 1, is at least one pair of public/private key pair of each user setup, by the number of user in publicly-owned block chain
Word compound product carry out Hash operation by hash function, generate cryptographic Hash, use described private key to described Hash
Value is signed, and described signature is carried out Hash operation, generates new cryptographic Hash, according to described publicly-owned block chain
The form of Plays message, embeds described new cryptographic Hash in described standard message, generates new standard message,
Token is added in described new standard message；
Step 2, user before described new standard message broadcasted by described publicly-owned block chain, by described new mark
The sender of quasi-message is set to the address of user oneself, broadcasts described new standard message, if described new standard disappears
Breath is packed by user and described new standard message is identified, then return the cryptographic Hash of described new standard message, as
The block at the most described new standard message place is identified, returns the cryptographic Hash of described block；If there is not use
The described new standard message of family packing, and crossed the legal time that described new standard message exists, new described in labelling
Standard message is invalid, reconfigures described new standard message, increases described token, in order to participated in described
The user of publicly-owned block chain packing packs confirmation.
Described hash function in described step 1 meets:
Given cryptographic Hash h, can not find a message m and makes hash (m)=h；
A given message m, can not find message n and makes hash (m)=hash (n).
Described token is the currency producing, circulating on described publicly-owned block chain.
The PKI of user is carried out coding by described step 2 and produces described address.
If described step 2 also includes only for the existence time-proven of described digitized article and authentication service,
Then recipient is set as invalid address；If allowing to shift described digitized article, then recipient is set as
Described address or the address of other user.
The present invention also proposes a kind of existence proof based on block chain technology and identification service system, described block
Chain is publicly-owned block chain, including:
Generate standard message module, for being that at least one pair of is public/private for each user setup in publicly-owned block chain
The digitized article of user, as the mark of described publicly-owned block chain, are carried out Hash by hash function by key
Computing, generates cryptographic Hash, according to the form of described publicly-owned block chain Plays message, by embedding for described cryptographic Hash
Enter in described standard message, generate new standard message, described new standard message adds token；
Broadcast module, is used for user before described new standard message broadcasted by described publicly-owned block chain, by institute
The sender stating new standard message is set to the address of user oneself, broadcasts described new standard message, if described newly
Standard message is packed by user and described new standard message is identified, then return the Hash of described new standard message
Value, if the block at described new standard message place is identified, returns the cryptographic Hash of described block；If not
There is user to pack described new standard message, and cross the legal time that described new standard message exists, labelling
Described new standard message is invalid, reconfigures described new standard message, increases described token, in order to is joined
Pack confirmation with the user of described publicly-owned block chain packing.
Described hash function in described generation standard message module meets:
Given cryptographic Hash h, can not find a message m and makes hash (m)=h；
A given message m, can not find message n and makes hash (m)=hash (n).
Described token is the currency producing, circulating on described publicly-owned block chain.
The PKI of user is carried out coding by described broadcast module and produces described address.
If described broadcast module also includes only for the existence time-proven of described digitized article and certification clothes
Business, then be set as invalid address by recipient；If allowing to shift described digitized article, then recipient is set
It is set to the address of described address or other user.
From above scheme, it is an advantage of the current invention that:
The present invention by putting in a publicly-owned block chain by the cryptographic Hash of the article after digitized, it is achieved
Can not distort, it is ensured that these article existed before the timestamp that block generates, and these article of certification is all
The characteristics such as person, whole process without third-party participation, safety based on block chain technology, confirmability,
The service of decentration is achieved from technical standpoint.
Accompanying drawing explanation
Fig. 1 is that digitized article are recorded in the flow chart in block chain；
Fig. 2 is present system structure chart.
Detailed description of the invention
Block chain divides publicly-owned chain, privately owned chain, three kinds of alliance's chain, so-called publicly-owned chain, it is meant that everyone is
The generation of block chain can be participated in, and can check that the information comprised in block chain, bit coin are depended on
Block chain is exactly the one of publicly-owned chain；Privately owned chain is then the block chain that a certain enterprises uses, not to external-open
Put；The enterprise of same alliance served by alliance's chain, and block chain is shared by the enterprise belonging to same alliance, is not difficult
Finding out, publicly-owned chain is the block chain technology achieving decentration characteristic substantially, and alliance's chain takes second place, private
There is chain the most weak.
Due to the publicity of publicly-owned block chain, everybody can participate in, the real theory phase with decentration
Meeting, therefore the present invention builds on publicly-owned block chain basis, the most popular block generation side
Formula is POW (proof of work) and POS (rights and interests prove) two kinds, and POW ensure that district to greatest extent
The fairness that block chain produces, produces block by the computing capability of consumption calculations machine, and shortcoming causes exactly
Calculate resource and the waste of electric power resource；Although POS alleviates calculating resource and the waste of electric power resource,
But improve everybody the most in a way and participate in the threshold of block packing, reduce the justice that block chain produces
Property, wherein it is implemented in the POW just that on block chain technology, most popular application bit coin network is taked, district
Block once produces and is admitted by the whole network participant, is difficult to be tampered, if chain after current block
Connect N number of block, then it is believed that the content of this block necessarily will not be tampered.
The present invention is to be implemented in the one of existence proof and authentication service on block chain technical foundation in fact
Existing method, each user is owned by the public and private key no less than a pair in this block chain, as at this block chain
Upper unique mark, is embedded into the cryptographic Hash of digitized article and can circulate on this publicly-owned block chain
Standard message format in, then broadcast this message in the whole network, wait the user participating in the packing of this block chain
Confirming the correctness of this message, once message is identified correctly, then this message of packing will this message be put into
In block, a block can comprise multiple message, and once this message is packaged into a certain block, and this block
Being confirmed by all users participating in this block chain, the confirmation of block needs to meet certain rule, such as than
In special coin system, when the cryptographic Hash calculated according to the information of block head is less than its desired value, we just may be used
To think that this block is identified.We can substantially think that this message one is confirmed and can not be tampered, in this district
If experiencing again the confirmation of N number of block after block, we necessarily think, this message can not be tampered, and should
Article produce the time will not be more late than the timestamp in this block, such as bit coin exchange block,
Once this exchange block be identified, and produce again and linked 6 blocks after this block, then
There is the chance of 10% to produce under the scene of next block assailant, can reach only to attack the probability of purpose
0.02428%, and along with the length of block chain increases, the probability of assailant exponentially declines.
The present invention is to be implemented in the existence proof on block chain technical foundation and authentication service one realization side
Method, its implementation is as follows:
Party A-subscriber wishes to leave in publicly-owned by the digitized article (such as music, educational background, patent etc.) of oneself
In block chain, prove that these article belong to party A-subscriber oneself, and existed before the timestamp of this block.
First, the article after digitized are carried out a Hash operation, obtain unique cryptographic Hash, institute
The hash function used must include following two characteristic: 1, gives cryptographic Hash h, finds one to disappear
Breath m makes hash (m)=h be extremely difficult；2, a given message m, finds message n to make
Obtaining hash (m)=hash (n) is and difficulty that this hash function can select the SHA256 being widely used
Function.
Then, the cryptographic Hash generated use the private key of party A-subscriber sign, then by the signature that obtains again
Secondary carry out Hash, obtain cryptographic Hash.The purpose of do so is that the PKI of only party A-subscriber can verify this signature
Accuracy, thus prove that the owner of these article is party A-subscriber；The purpose of use cryptographic Hash is, it is ensured that I
Article to be protected will not occur in plain text and read by other people on publicly-owned block chain, and these article are once
Being tampered, its cryptographic Hash will become with original cryptographic Hash is the most different.
Secondly, according to the form of the standard message of this publicly-owned block chain, the cryptographic Hash that upper step obtains is embedded into
In in standard message；To ensure that the legitimacy of this message i.e. can not run counter to standard message format in the process,
Also to ensure that the effectiveness of this transaction i.e. participates in the user of this publicly-owned block chain and is ready this transaction of packing, so I
Can add certain token (currency producing, circulating on this block chain) within the message, as
Be awarded to pack the user of this transaction, such as, in ripe bit coin network, has a kind of standard
Transaction form, the output part operation code of this transaction message is OP_RETURN, it is meant that this output is can not
Used as the input of bit coin transaction, i.e. can not be spent, cryptographic Hash is embedded into
After OP_RETURN, the value of the input of now this transaction should be greater than the value of output, and difference is as packing
The award of the miner of this transaction, if this transaction does not has the effective time that success is packaged and has crossed, then
Reconfigure this transaction message, strengthen the difference of this transaction input and output, i.e. give the expense of miner, come
To the bigger chance being packaged into block.
Then, party A-subscriber before this message broadcasted by publicly-owned block chain, the sender of this message is set as A
The address of user oneself, this address is the most reasonably to be encoded generation by the PKI of party A-subscriber.If only
It is the existence time-proven for these article and authentication service, then recipient is set as invalid address (this
Sample can ensure that and cannot be transferred)；If also allowing for the transfer of these article, then recipient is set as that A uses
The address at family oneself or the address of other user.
This message of Last call, waits that the user participating in this block chain packs, if this message is identified,
Then return the cryptographic Hash of this message, if the block at this message place is identified, return the cryptographic Hash of this block；
Be ready, without user, this message of packing, and crossed the legal time that this message exists, this message of labelling without
Effect, reconfigures this message, strengthens and rewards, in order to packed confirmation by the user participating in the packing of block chain.
It is below the specific embodiment of the present invention, as follows:
In Fig. 1, the step that digitized article exist time-proven and certification is as follows:
Step S1.1:A user is desired with existing and proves and the digitized article of authentication service；
Step S1.2: use hash function that these digitized article are carried out Hash operation, obtain cryptographic Hash；
Step S1.3: use the private key of party A-subscriber that the cryptographic Hash obtained in S1.2 is signed；
Step S1.4: use hash function that the signature in S1.3 is carried out Hash operation, obtain cryptographic Hash；
Step S1.5: the cryptographic Hash obtained by S1.4 is embedded in message；
Step S1.6: judge whether user allows this digitized item transfer, it is allowed to enter S1.7, do not permit
Permitted to enter S1.8；
Step S1.7: sender of the message is set to party A-subscriber address, recipient be set to party A-subscriber address or
The address of other user of person；
Step S1.8: sender of the message is set to party A-subscriber address, recipient is set to invalid address；
Step S1.9: judge that the message constructed is the most legal, legal entrance S1.10, illegal entrance
S1.5；
Step S1.10: broadcast this message to the whole network；
Step S1.11: whether this message is packed by the user participating in the packing of block chain, and this message of packing
Block whether be identified, be identified entrance S1.12, not confirmed enter S1.13；
Step S1.12: obtain the cryptographic Hash of this message and the block that comprises this message, as voucher, base
Digitized article in block chain technology exist the process of proof and authentication service to be terminated；
Step S1.13: judge whether this message exceedes the legal existence time, exceedes entrance S1.5, does not has
Enter S1.14；
Step S1.14: wait until time-out, enters S1.5.
As in figure 2 it is shown, present invention additionally comprises a kind of existence proof based on block chain technology and authentication service system
System, described block chain is publicly-owned block chain, including:
Generate standard message module, for being that at least one pair of is public/private for each user setup in publicly-owned block chain
The digitized article of user, as the mark of described publicly-owned block chain, are carried out Hash by hash function by key
Computing, generates cryptographic Hash, according to the form of described publicly-owned block chain Plays message, by embedding for described cryptographic Hash
Enter in described standard message, generate new standard message, described new standard message adds token；
Broadcast module, is used for user before described new standard message broadcasted by described publicly-owned block chain, by institute
The sender stating new standard message is set to the address of user oneself, broadcasts described new standard message, if described newly
Standard message is packed by user and described new standard message is identified, then return the Hash of described new standard message
Value, if the block at described new standard message place is identified, returns the cryptographic Hash of described block；If not
There is user to pack described new standard message, and cross the legal time that described new standard message exists, labelling
Described new standard message is invalid, reconfigures described new standard message, increases described token, in order to is joined
Pack confirmation with the user of described publicly-owned block chain packing.
Described hash function in described generation standard message module meets:
Given cryptographic Hash h, can not find a message m and makes hash (m)=h；
A given message m, can not find message n and makes hash (m)=hash (n).
Described token is the currency producing, circulating on described publicly-owned block chain.
The PKI of user is carried out coding by described broadcast module and produces described address.
If described broadcast module also includes only for the existence time-proven of described digitized article and certification clothes
Business, then be set as invalid address by recipient；If allowing to shift described digitized article, then recipient is set
It is set to the address of described address or other user.
Claims (10)
1. existence proof based on block chain technology and an authentication service method, described block chain is publicly-owned district
Block chain, it is characterised in that including:
Step 1, is at least one pair of public/private key pair of each user setup, by the number of user in publicly-owned block chain
Word compound product carry out Hash operation by hash function, generate cryptographic Hash, use described private key to described Hash
Value is signed, and described signature is carried out Hash operation, generates new cryptographic Hash, according to described publicly-owned block chain
The form of Plays message, embeds described new cryptographic Hash in described standard message, generates new standard message,
Token is added in described new standard message；
Step 2, user before described new standard message broadcasted by described publicly-owned block chain, by described new mark
The sender of quasi-message is set to the address of user oneself, broadcasts described new standard message, if described new standard disappears
Breath is packed by user and described new standard message is identified, then return the cryptographic Hash of described new standard message, as
The block at the most described new standard message place is identified, returns the cryptographic Hash of described block；If there is not use
The described new standard message of family packing, and crossed the legal time that described new standard message exists, new described in labelling
Standard message is invalid, reconfigures described new standard message, increases described token, in order to participated in described
The user of publicly-owned block chain packing packs confirmation.
2. existence proof based on block chain technology as claimed in claim 1 and authentication service method, it is special
Levying and be, the described hash function in described step 1 meets:
Given cryptographic Hash h, can not find a message m and makes hash (m)=h；
A given message m, can not find message n and makes hash (m)=hash (n).
3. existence proof based on block chain technology as claimed in claim 1 and authentication service method, it is special
Levying and be, described token is the currency producing, circulating on described publicly-owned block chain.
4. existence proof based on block chain technology as claimed in claim 1 and authentication service method, it is special
Levy and be, the PKI of user is carried out coding by described step 2 and produces described address.
5. existence proof based on block chain technology as claimed in claim 1 and authentication service method, it is special
Levy and be, if described step 2 also includes only for the existence time-proven of described digitized article and certification clothes
Business, then be set as invalid address by recipient；If allowing to shift described digitized article, then recipient is set
It is set to the address of described address or other user.
6. existence proof based on block chain technology and an identification service system, described block chain is publicly-owned district
Block chain, it is characterised in that including:
Generate standard message module, for being that at least one pair of is public/private for each user setup in publicly-owned block chain
The digitized article of user, as the mark of described publicly-owned block chain, are carried out Hash by hash function by key
Computing, generates cryptographic Hash, according to the form of described publicly-owned block chain Plays message, by embedding for described cryptographic Hash
Enter in described standard message, generate new standard message, described new standard message adds token；
Broadcast module, is used for user before described new standard message broadcasted by described publicly-owned block chain, by institute
The sender stating new standard message is set to the address of user oneself, broadcasts described new standard message, if described newly
Standard message is packed by user and described new standard message is identified, then return the Hash of described new standard message
Value, if the block at described new standard message place is identified, returns the cryptographic Hash of described block；If not
There is user to pack described new standard message, and cross the legal time that described new standard message exists, labelling
Described new standard message is invalid, reconfigures described new standard message, increases described token, in order to is joined
Pack confirmation with the user of described publicly-owned block chain packing.
7. existence proof based on block chain technology as claimed in claim 6 and identification service system, it is special
Levying and be, the described hash function in described generation standard message module meets:
Given cryptographic Hash h, can not find a message m and makes hash (m)=h；
A given message m, can not find message n and makes hash (m)=hash (n).
8. existence proof based on block chain technology as claimed in claim 6 and identification service system, it is special
Levying and be, described token is the currency producing, circulating on described publicly-owned block chain.
9. existence proof based on block chain technology as claimed in claim 6 and identification service system, it is special
Levy and be, the PKI of user is carried out coding by described broadcast module and produces described address.
10. existence proof based on block chain technology as claimed in claim 6 and identification service system, its
It is characterised by, if described broadcast module also includes only for the existence time-proven of described digitized article and recognize
Card service, then be set as invalid address by recipient；If allowing to shift described digitized article, then will receive
Person is set as the address of described address or other user.
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| CN201610513011.9A CN105959307A (en) | 2016-06-30 | 2016-06-30 | Existence certification and authentication service method and system based on block chain technology |
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