CN110532806A - Bidding documents management method, system and computer readable storage medium - Google Patents
Bidding documents management method, system and computer readable storage medium Download PDFInfo
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- CN110532806A CN110532806A CN201910682674.7A CN201910682674A CN110532806A CN 110532806 A CN110532806 A CN 110532806A CN 201910682674 A CN201910682674 A CN 201910682674A CN 110532806 A CN110532806 A CN 110532806A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2151—Time stamp
Abstract
The embodiment of the invention discloses a kind of bidding documents management method, system and computer readable storage mediums.This method belongs to block chain technical field, this method comprises: bid terminal will be encrypted after the encryption of initial Bid Documents by symmetric key and obtain reference paper after stamping timestamp；Reference paper is stored into block chain by bid terminal；Bidding Management server obtains reference paper from block chain, and obtains encrypting initial Bid Documents and timestamp after parsing reference paper；Bidding Management server judges whether the initial Bid Documents of the encryption do not modify after preset timing node according to the timestamp, it is whether qualified with the determination initial Bid Documents of encryption, all it is from after the day of delivery just without modification so as to ensure to participate in the bidding documents of competitive bidding, and then improves the fairness of competitive bidding.
Description
Technical field
The present invention relates to block chain technical field more particularly to a kind of bidding documents management method, system and computer-readable deposit
Storage media.
Background technique
Invite and submit bids, be the dealing of the bulk supply tariff carried out under condition of market economy, engineering construction project give out a contract for a project with
It contracts and when the buying and offer of service item, a kind of used mode of doing business.
In the prior art, bidding documents mainly uses the form of paper, it is difficult to determine the whether modified of bidding documents.Some throwings
Quotient is marked after having known the bidding documents content of other bidders, for the content of the bidding documents of other bidders, temporarily changes oneself
Bidding documents critical data has upset normal market order to obtain competitive advantage.
Summary of the invention
The embodiment of the invention provides a kind of bidding documents management method, system and computer readable storage mediums, it is intended to solve
It is difficult to determine the problem whether bidding documents is modified in the prior art.
In a first aspect, the embodiment of the invention provides a kind of bidding documents management methods comprising:
Bid terminal will obtain encrypting initial Bid Documents by preset symmetric key after the encryption of initial Bid Documents；
Bid terminal stabs certification request, the timestamp certification request to preset timestamp certificate server sending time
Cryptographic Hash comprising the initial Bid Documents of encryption；
Bid terminal receiving time stabs the timestamp that certificate server is sent, and the timestamp and the encryption is initial
Bid Documents merge to obtain reference paper；
The reference paper is stored into block chain by bid terminal；
Bidding Management server obtains the reference paper from block chain, and obtains after parsing to the reference paper
To the initial Bid Documents of the encryption and the timestamp；
Whether bidding Management server judges the initial Bid Documents of encryption in the preset time according to the timestamp
It does not modify after node, it is whether qualified with the determination initial Bid Documents of encryption.
Second aspect, the embodiment of the present invention provide a kind of bidding documents management system, and the bidding documents management system includes submitting a tender eventually
End and bidding Management server, the bid terminal include the first encryption unit, the first transmission unit, the first receiving unit with
And storage element, the bidding Management server include that resolution unit, the first judging unit, the first notification unit and second are logical
Know unit, in which:
First encryption unit, for by preset symmetric key encryption will to be obtained just after the initial Bid Documents encryption
Beginning Bid Documents；
First transmission unit stabs certification request to preset timestamp certificate server sending time for submitting a tender terminal,
The timestamp certification request includes the cryptographic Hash of the initial Bid Documents of encryption；
First receiving unit, for the timestamp that receiving time stamp certificate server is sent, and by the timestamp and institute
The initial Bid Documents of encryption are stated to merge to obtain reference paper；
The reference paper is stored into block chain by storage element for submitting a tender terminal；
Resolution unit is obtained for obtaining the reference paper from block chain, and after parsing to the reference paper
The initial Bid Documents of the encryption arrived and the timestamp；
First judging unit, for judging the initial Bid Documents of encryption whether when preset according to the timestamp
It does not modify after intermediate node, it is whether qualified with the determination bidding documents.
The third aspect, the embodiment of the invention also provides a kind of bidding documents management systems comprising bid terminal and bid
Management server, the bid terminal and bidding Management server include memory, processor and are stored in the storage
On device and the computer program that can run on the processor, the processor of the bid terminal and bidding Management server
Method as described in relation to the first aspect is realized when executing corresponding computer program jointly.
Fourth aspect, the embodiment of the invention also provides a kind of computer readable storage medium, the storage medium storage
There are the first computer program and second computer program, first computer program and second computer program ought be thrown respectively
The processor of the processor and bidding Management server of marking terminal can realize method as described in relation to the first aspect when executing.
The embodiment of the invention provides a kind of bidding documents management method, device, computer equipment and storage mediums.Wherein, institute
The method of stating includes: that bid terminal will obtain encrypting initial bidding documents text after the encryption of initial Bid Documents by preset symmetric key
Part；Bid terminal stabs certification request to preset timestamp certificate server sending time, and the timestamp certification request includes
The cryptographic Hash of the initial Bid Documents of encryption；Bid terminal receiving time stabs the timestamp that certificate server is sent, and by institute
Timestamp is stated to merge to obtain reference paper with the initial Bid Documents of encryption；The reference paper is stored into area by bid terminal
In block chain；Bidding Management server obtains the reference paper from block chain, and obtains after parsing to the reference paper
To the initial Bid Documents of the encryption and the timestamp；Bidding Management server judges the encryption according to the timestamp
Whether initial Bid Documents do not modify after preset timing node, whether encrypt initial Bid Documents so that determination is described
It is qualified.By applying the technical scheme of the present invention, bid terminal by initial Bid Documents by encrypting and stamping on after timestamp
It passes in block chain；Whether bidding Management server authentication tenderer uploads to the Bid Documents on block chain unmodified, if
Without modification, retain the bid qualification of tenderer；Otherwise, cancel the bid qualification of tenderer, it is competing so as to ensure to participate in
Target bidding documents is all from after the day of delivery just without modification, and then improves the fairness of competitive bidding.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of application scenarios schematic diagram of bidding documents management method provided in an embodiment of the present invention；
Fig. 2 is a kind of flow diagram of bidding documents management method provided in an embodiment of the present invention；
Fig. 3 is a kind of sub-process schematic diagram of bidding documents management method provided in an embodiment of the present invention；
Fig. 4 is a kind of sub-process schematic diagram of bidding documents management method provided in an embodiment of the present invention；
Fig. 5 is a kind of sub-process schematic diagram of bidding documents management method provided in an embodiment of the present invention；
Fig. 6 be another embodiment of the present invention provides bidding documents management method flow diagram；
Fig. 7 is a kind of schematic block diagram of bidding documents management system provided in an embodiment of the present invention；
Fig. 8 is the schematic block diagram of the storage element of the bid terminal of bidding documents management system provided in an embodiment of the present invention；
Fig. 9 is the schematic frame of the second encryption unit of the bid terminal of bidding documents management system provided in an embodiment of the present invention
Figure；
Figure 10 is the first judging unit of the bidding Management server of bidding documents management system provided in an embodiment of the present invention
Schematic block diagram；
Figure 11 be another embodiment of the present invention provides a kind of bidding documents management system schematic block diagram；And
Figure 12 is the schematic block diagram of computer equipment provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.
It is also understood that mesh of the term used in this description of the invention merely for the sake of description specific embodiment
And be not intended to limit the present invention.As description of the invention and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singular, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
As used in this specification and in the appended claims, term " if " can be according to context quilt
Be construed to " when ... " or " once " or " in response to determination " or " in response to detecting ".Similarly, phrase " if it is determined that " or
" if detecting [described condition or event] " can be interpreted to mean according to context " once it is determined that " or " in response to true
It is fixed " or " once detecting [described condition or event] " or " in response to detecting [described condition or event] ".
Fig. 1 and Fig. 2 are please referred to, Fig. 1 is the application scenarios schematic diagram of bidding documents management method provided in an embodiment of the present invention.Figure
2 be a kind of schematic flow chart of bidding documents management method provided in an embodiment of the present invention.The bidding documents management method is applied to bidding documents
In management system, specifically, bid terminal 1 will be encrypted by preset symmetric key after the initial Bid Documents encryption
Initial Bid Documents；Bid terminal 1 stabs certification request, the timestamp to preset 2 sending time of timestamp certificate server
Certification request includes the cryptographic Hash of the initial Bid Documents of encryption；1 receiving time of bid terminal stabs what certificate server 2 was sent
Timestamp, and the timestamp is merged to obtain reference paper with the initial Bid Documents of encryption；Bid terminal 1 is by the ginseng
File storage is examined into block chain 3；Bidding Management server 4 obtains the reference paper from block chain 3, and to the reference
File carries out the initial Bid Documents of the encryption obtained after parsing and the timestamp；Bidding Management server 4 is according to institute
It states timestamp and judges whether the initial Bid Documents of encryption do not modify after preset timing node, described in determination
Whether bidding documents is qualified.
Fig. 2 is the flow diagram of bidding documents management method provided in an embodiment of the present invention.As shown, this method include with
Lower step S1-S6.
S1, bid terminal will obtain encrypting initial bidding documents text after the encryption of initial Bid Documents by preset symmetric key
Part.
In specific implementation, in order to ensure the safety of initial Bid Documents, the safety of initial Bid Documents is improved, is submitted a tender
Terminal will obtain encrypting initial Bid Documents by preset symmetric key after the encryption of initial Bid Documents.
Symmetric key encryption is called private key encryption, that is, the both sides for sending and receiving data must use identical key pair
Operation is encrypted and decrypted in plain text.Symmetric key encryption algorithm specifically includes that DES, 3DES, IDEA, FEAL, BLOWFISH
Deng.Private key is called to encrypted symmetric key encryption convenient for related side (i.e. tenderer) by way of symmetric key encryption to add
Close, that is, the both sides for sending and receiving data must use identical key pair that operation is encrypted and decrypted in plain text.Symmetric key adds
Close algorithm specifically includes that DES, 3DES, IDEA, FEAL, BLOWFISH etc..It is convenient for related side by way of symmetric key encryption
(i.e. tenderer) is decrypted to initial Bid Documents are encrypted.
S2, bid terminal stab certification request, the timestamp certification to preset timestamp certificate server sending time
Cryptographic Hash of the request comprising the initial Bid Documents of encryption.
In specific implementation, bid terminal stabs certification request, the time to preset timestamp certificate server sending time
Stab the cryptographic Hash that certification request includes the initial Bid Documents of encryption.
Correspondingly, timestamp certificate server receive bid terminal transmission timestamp certification request when, will when
Between the stamp certification request initial Bid Documents of encryption that include cryptographic Hash and timestamp certificate server receive certification request
Corresponding time point carries out being signed to obtain the time to signature original text as signature original text, using the private key of time stamp server
Stamp, and the timestamp is sent to bid terminal.
It should be noted that timestamp certificate server is to trust time-stamping service center by joint
The server that (TimeStampAuthority, TSA) is set up.
S3, bid terminal receiving time stab the timestamp that certificate server is sent, and by the timestamp and the encryption
Initial Bid Documents merge to obtain reference paper.
In specific implementation, bid terminal receiving time stabs the timestamp that certificate server is sent.The timestamp includes the time
Stamp server to the cryptographic Hash and timestamp certificate server that encrypt initial Bid Documents receive certification request it is corresponding when
Between point.By the timestamp provable encryption initial Bid Documents time point corresponding to the timestamp, (i.e. timestamp is authenticated
Server receives certification request corresponding time point) it has existed.
The timestamp is merged to obtain reference paper by bid terminal with the initial Bid Documents of encryption.Specific implementation
In, the initial Bid Documents of the encryption and the timestamp are compressed to obtain reference paper by bid terminal.
The reference paper is stored into block chain by S4, bid terminal.
In specific implementation, the reference paper is stored into block chain by bid terminal, due to the text stored in block chain
Part cannot be tampered, so as to effectively ensure the safety and reliability of reference paper.
Referring to Fig. 3, in one embodiment, above step 42 specifically comprises the following steps S41-S43.
The reference paper is encrypted to obtain digital signature in S41.
In specific implementation, encryption refers to the encryption carried out by cryptographic algorithm to reference paper, to protect
Demonstrate,proving the reference paper can not distort.Digital signature is the character string of a string of anti-counterfeitings, for verify reference paper integrality and
Source.By the way that reference paper is encrypted to obtain digital signature, digital signature and reference paper are sent to verifying
Node, integrality and source by verifying node verification reference paper.
Referring to fig. 4, in one embodiment, above step S41 specifically comprises the following steps S411-S412.
S411 carries out the first encryption to the reference paper according to hash algorithm and obtains digital digest.
In specific implementation, hash algorithm refers to the algorithm that the message of random length can be mapped to fixed length messages,
The hash algorithm of this implementation is using any one in MD4, MD5 or SHA256.Wherein, reference paper be used as without
The plaintext of encryption is the character that people can intuitively understand its meaning in plain text, and carrying out the first encryption by hash algorithm will be arbitrarily long
The plaintext of degree is mapped to the ciphertext of a string of regular lengths, and ciphertext passes through encrypted character string, and people can not intuitively understand it
The meaning, this string ciphertext is digital digest.
S412 carries out the second encryption to the digital digest according to the private key of pre-configuration and obtains digital signature.
In specific implementation, private key refers to that the key distributed by rivest, shamir, adelman, rivest, shamir, adelman are adding
Two different keys are used when close and decryption, public key and private key is referred to as, only has by the data of public key encryption
Private key could be decrypted, and only have public key that could decrypt by the data of private key encryption.Private key is generated by random number algorithm, public key root
It is generated according to private key, public key and private key pair distribution, wherein disclosed in public key spoon, private key is that individual holds and tightly protects.
Each node configures a pair of of public key and private key.The private key of bid terminal be it is pre-configured, plucked obtaining number
After wanting, bid terminal carries out the second encryption to digital digest by private key to obtain digital signature.
The digital signature and the reference paper are sent to verifying node by S42.
In specific implementation, after obtaining the digital signature of reference paper, bid terminal signs reference paper and its number
Name is sent to verifying node, by the integrality of verifying node verification reference paper and source.It should be noted that verifying node
It is the server for verifying block validity.
After having passed through to the verifying of reference paper, verifying node returns to the area comprising the reference paper to bid terminal
Block.
S43 receives the block that the verifying node returns and the block is added in block chain structure, the block
It is to be generated by verifying node according to the digital signature and the reference paper.
In specific implementation, receiving the block that verifying node is confirmed, (block is by verifying node according to the number
Word signature and the encryption bill receivable file generated) after, according to order of occurrence by the block that is confirmed and local area
Upper block head and the tail connection in block chain structure (the block chain structure safeguarded by bid terminal) is to update safeguarded area
Reference paper is stored into block chain by block chain to realize.
S5, bidding Management server obtains the reference paper from block chain, and parses to the reference paper
After obtain the initial Bid Documents of the encryption and the timestamp.
In specific implementation, bid terminal obtains the reference paper from block chain, and solves to the reference paper
The initial Bid Documents of the encryption obtained after analysis and the timestamp.Specifically, bidding Management server is to the reference
File obtains the initial Bid Documents of the encryption and the timestamp after being decompressed.
Whether S6, bidding Management server judge the initial Bid Documents of encryption when preset according to the timestamp
It does not modify after intermediate node, it is whether qualified with the determination initial Bid Documents of encryption.
In specific implementation, bidding Management server according to the timestamp judge the initial Bid Documents of the encryption whether
It does not modify after preset timing node, it is whether qualified with the determination initial Bid Documents of encryption.If encryption is initial
Whether Bid Documents are not modified after preset timing node, then illustrate that the bidding documents of tenderer meets the requirements；Otherwise, then illustrate
The bidding documents of tenderer is undesirable.
Further, if the initial Bid Documents of encryption are modified after preset timing node, bidding Management clothes
Device be engaged in the bid terminal transmission unqualified notification message of bidding documents, has notified that its bidding documents is undesirable by tenderer, money of submitting a tender
Lattice are cancelled.
If the initial Bid Documents of the encryption are not modified after preset timing node, bidding Management server is to institute
It states bid terminal and sends bidding documents qualification notification message, notified that its bidding documents meets the requirements tenderer, there is bid qualification.
Referring to Fig. 5, in one embodiment, above step S6 specifically comprises the following steps S51-S54.
Whether S51 judges the time on the timestamp before the timing node.
In specific implementation, bidding Management server verifies the time on the timestamp, judges the timestamp
On time whether earlier than the timing node.If so, go to S62, illustrate tenderer initial Bid Documents be when segmentum intercalaris
It is completed before point, therefore meets time limit requirement；Otherwise, go to S64, illustrate tenderer initial Bid Documents be when
It is completed after intermediate node, therefore, determines that the initial Bid Documents of encryption are modified after preset timing node.
It should be noted that needing tenderer before timing node by the initial of itself in order to ensure the justice of bid
Bid Documents carry out timestamp certification.The initial Bid Documents authenticated (i.e. after timing node) that go beyond the time limit are considered as in vain.
S52 judges whether the cryptographic Hash of the initial Bid Documents of encryption is identical as the cryptographic Hash that the timestamp includes.
In specific implementation, bidding Management server judge the initial Bid Documents of the encryption cryptographic Hash whether with it is described when
Between to stab the cryptographic Hash for including identical.If they are the same, S63 is gone to, illustrates that encrypt initial Bid Documents does not have after generating timestamp
It is modified, otherwise goes to S64, illustrate that encrypt initial Bid Documents is modified after the timestamp corresponding time.
S53 determines that the initial Bid Documents of encryption are not modified after preset timing node.
S54 determines that the initial Bid Documents of encryption are modified after preset timing node.
By applying the technical scheme of the present invention, after bid terminal is by encrypting by initial Bid Documents and stamping timestamp
It uploads in block chain；Whether bidding Management server authentication tenderer uploads to the Bid Documents on block chain unmodified,
If retaining the bid qualification of tenderer without modification；Otherwise, cancel the bid qualification of tenderer, so as to ensure to participate in
The bidding documents of competitive bidding is all from after the day of delivery just without modification, and then improves the fairness of competitive bidding.
Fig. 6 be another embodiment of the present invention provides a kind of bidding documents management method flow diagram.As shown in fig. 6, this
The bidding documents management method of embodiment includes step S61-S69.The wherein step S1-S6 in step S61-S66 and above-described embodiment
Similar, details are not described herein.The following detailed description of in the present embodiment increase step S67-S69.
S67, bid terminal is by the public key of bidding Management server to obtaining cryptographic symmetrical after the symmetric key encryption
Key, and the encrypted symmetric key is sent to the bidding Management server.
In specific implementation, bid terminal is by the public key of bidding Management server to being added after the symmetric key encryption
Close symmetric key, and the encrypted symmetric key is sent to the bidding Management server.
Correspondingly, bidding Management server, can be by the private key of itself to institute after receiving the encrypted symmetric key
It states and obtains the symmetric key after encrypted symmetric key is decrypted, and at the beginning of the encryption being decrypted by the symmetric key
Beginning Bid Documents are to obtain initial Bid Documents.
S68, bidding Management server are decrypted the encrypted symmetric key by the private key of bidding Management server
To obtain the symmetric key.
In specific implementation, if the cryptographic Hash of the initial Bid Documents is identical as the cryptographic Hash that the timestamp includes,
Then illustrate that encrypt initial Bid Documents did not modify after the timestamp corresponding time, therefore, determines the initial mark of the encryption
Written matter meets the requirements, and retains the competitive bidding qualification of the tenderer.At this point, bidding Management server passes through bidding Management server
Private key is decrypted the encrypted symmetric key to obtain the symmetric key.And by the symmetric key to the initial mark of encryption
Written matter is decrypted.
S69, bidding Management server are decrypted to obtain the initial Bid Documents of encryption by the symmetric key
To the initial Bid Documents, to carry out saying mark according to the initial Bid Documents by tenderer.
In specific implementation, bidding Management server solves the initial Bid Documents of encryption by the symmetric key
It is close to obtain the initial Bid Documents.
During saying mark, it is desirable that tenderer carries out saying mark according to the initial Bid Documents that decryption obtains, due to initially marking
Written matter after uploading to block chain without modification, thus it is guaranteed that the fairness of bid.
Fig. 7 is a kind of schematic block diagram of bidding documents management system provided in an embodiment of the present invention.As shown in fig. 7, corresponding to
The above bidding documents management method, the present invention also provides a kind of bidding documents management systems 100.The bidding documents management system 100 includes submitting a tender eventually
End 80 and bidding Management server 90, the bid terminal 80 include the first encryption unit 81, the first transmission unit 82, first
Receiving unit 83 and storage element 84, the bidding Management server 90 include resolution unit 91 and the first judging unit
92, in which:
First encryption unit 81, for will be encrypted after the initial Bid Documents encryption by preset symmetric key
Initial Bid Documents；
First transmission unit 82 is asked for submitting a tender terminal to the stamp certification of preset timestamp certificate server sending time
It asks, the timestamp certification request includes the cryptographic Hash of the initial Bid Documents of encryption；
First receiving unit 83, for receiving time stamp certificate server send timestamp, and by the timestamp with
The initial Bid Documents of encryption merge to obtain reference paper；
The reference paper is stored into block chain by storage element 84 for submitting a tender terminal；
Resolution unit 91, for obtaining the reference paper from block chain, and after being parsed to the reference paper
The obtained initial Bid Documents of the encryption and the timestamp；
First judging unit 92, for judging the initial Bid Documents of encryption whether preset according to the timestamp
It does not modify after timing node, it is whether qualified with the determination bidding documents.
In one embodiment, as shown in figure 8, the storage element 84 includes the second encryption unit 841, the second transmission unit
842 and adding unit 843.
Second encryption unit 841, for being encrypted the reference paper to obtain digital signature.
Second transmission unit 842, for the digital signature and the reference paper to be sent to verifying node.
Adding unit 843, for receiving the block of the verifying node return and the block being added to block link
On structure, the block is to be generated by verifying node according to the digital signature and the reference paper.
In one embodiment, as shown in figure 9, second encryption unit 841 includes that third encryption unit and the 4th add
Close unit.
Third encryption unit 8411, for being encrypted to obtain digital digest to the reference paper according to hash algorithm.
4th encryption unit 8412 encrypts the digital digest to obtain digital label for the private key according to pre-configuration
Name.
In one embodiment, as shown in Figure 10, first judging unit 92 is sentenced including second judgment unit 921, first
Order member 922, third judging unit 923, the second judging unit 924 and third judging unit 925.
Second judgment unit 921, for judging the time on the timestamp whether before the timing node；
First judging unit 922, if the time on the timestamp not before the timing node, described in judgement
Initial Bid Documents are encrypted to be modified after preset timing node.
Third judging unit 923, if the time on the timestamp, before the timing node, judgement is described to be added
Whether the cryptographic Hash of close initial Bid Documents is identical as the cryptographic Hash that the timestamp includes；
Second judging unit 924, if including for the cryptographic Hash of the initial Bid Documents of encryption and the timestamp
Cryptographic Hash is not identical, determines that the initial Bid Documents of encryption are modified after preset timing node；
Third judging unit 925, if including for the cryptographic Hash of the initial Bid Documents of encryption and the timestamp
Cryptographic Hash is identical, determines that the initial Bid Documents of encryption are not modified after preset timing node.
Figure 11 be another embodiment of the present invention provides a kind of bidding documents management system 100 schematic block diagram.Such as Figure 11 institute
Show, it is single that the bid terminal 80 of the bidding documents management system 100 of the present embodiment increases the 5th encryption on the basis of the above embodiments
Member 85, the bidding Management server 90 of the bidding documents management system 100 of the present embodiment increase the on the basis of the above embodiments
One decryption unit 93 and the second decryption unit 94.
5th encryption unit 85, for by the public key of bidding Management server to being added after the symmetric key encryption
Close symmetric key, and the encrypted symmetric key is sent to the bidding Management server.
First decryption unit 93 is decrypted the encrypted symmetric key for the private key by bidding Management server
To obtain the symmetric key；
Second decryption unit 94, for being decrypted the initial Bid Documents of encryption to obtain by the symmetric key
To the initial Bid Documents, to carry out saying mark according to the initial Bid Documents by tenderer.
It should be noted that it is apparent to those skilled in the art that, above-mentioned 100 He of bidding documents management system
The specific implementation process of each unit can refer to the corresponding description in preceding method embodiment, for convenience of description and succinctly,
Details are not described herein.
The embodiment of the present invention also proposes that a kind of bidding documents management system, the bidding documents management system include at least two computers
Equipment, including a bid terminal and an at least bidding Management server.Figure 12 is please referred to,
Figure 12 is a kind of schematic block diagram of computer equipment provided by the embodiments of the present application.The computer equipment 500 can
To be terminal, be also possible to server, wherein terminal can be smart phone, tablet computer, laptop, desktop computer,
Personal digital assistant and wearable device etc. have the electronic equipment of communication function.Server can be independent server,
It can be the server cluster of multiple server compositions.
Refering to fig. 12, which includes processor 502, memory and the net connected by system bus 501
Network interface 505, wherein memory may include non-volatile memory medium 503 and built-in storage 504.
The non-volatile memory medium 503 can storage program area 5031 and computer program 5032.The computer program
5032 are performed, and processor 502 may make to execute a kind of bidding documents management method.
The processor 502 is for providing calculating and control ability, to support the operation of entire computer equipment 500.
The built-in storage 504 provides environment for the operation of the computer program 5032 in non-volatile memory medium 503, should
When computer program 5032 is executed by processor 502, processor 502 may make to execute a kind of bidding documents management method.
The network interface 505 is used to carry out network communication with other equipment.It will be understood by those skilled in the art that in Figure 12
The structure shown, only the block diagram of part-structure relevant to application scheme, does not constitute and is applied to application scheme
The restriction of computer equipment 500 thereon, specific computer equipment 500 may include more more or fewer than as shown in the figure
Component perhaps combines certain components or with different component layouts.
Wherein, the processor 502 of the bid terminal and bidding documents management server is stored in memory for running
Computer program 5032, to realize following steps:
Bid terminal will obtain encrypting initial Bid Documents by preset symmetric key after the encryption of initial Bid Documents；
Bid terminal stabs certification request, the timestamp certification request to preset timestamp certificate server sending time
Cryptographic Hash comprising the initial Bid Documents of encryption；
Bid terminal receiving time stabs the timestamp that certificate server is sent, and the timestamp and the encryption is initial
Bid Documents merge to obtain reference paper；
The reference paper is stored into block chain by bid terminal；
Bidding Management server obtains the reference paper from block chain, and obtains after parsing to the reference paper
To the initial Bid Documents of the encryption and the timestamp；
Whether bidding Management server judges the initial Bid Documents of encryption in the preset time according to the timestamp
It does not modify after node, it is whether qualified with the determination initial Bid Documents of encryption.
In one embodiment, the processor 502 of bid terminal stores the reference paper in the realization bid terminal
Into block chain when step, it is implemented as follows step:
The reference paper is encrypted to obtain digital signature；
The digital signature and the reference paper are sent to verifying node；
Receive it is described verifying node return block and the block is added in block chain structure, the block be by
Verify what node was generated according to the digital signature and the reference paper.
In one embodiment, the processor 502 of bid terminal described is encrypted the reference paper realizing
When obtaining digital signature step, it is implemented as follows step:
The reference paper is encrypted to obtain digital digest according to hash algorithm；
The digital digest is encrypted to obtain digital signature according to the private key of pre-configuration.
In one embodiment, the processor 502 of bidding Management server is realizing the bidding Management server according to institute
It states timestamp and judges whether the initial Bid Documents of encryption do not modify after preset timing node, described in determination
Encrypt initial Bid Documents whether eligible paths when, be implemented as follows step:
Judge the time on the timestamp whether before the timing node；
If the time on the timestamp not before the timing node, determines the initial Bid Documents of encryption pre-
If timing node after modified；
If the time on the timestamp before the timing node, judges the Hash of the initial Bid Documents of encryption
Whether value is identical as the cryptographic Hash that the timestamp includes；
If the cryptographic Hash of the initial Bid Documents of encryption and the cryptographic Hash that the timestamp includes be not identical, described in judgement
Initial Bid Documents are encrypted to be modified after preset timing node；
If the cryptographic Hash of the initial Bid Documents of encryption is identical as the cryptographic Hash that the timestamp includes, described add is determined
Close initial Bid Documents are not modified after preset timing node.
In one embodiment, the processor 502 of bid terminal is realizing the bidding Management server to the bid eventually
After end transmission bidding documents qualification notification message before step, following steps are also realized:
Bid terminal by the public key of bidding Management server to obtaining encrypted symmetric key after the symmetric key encryption,
And the encrypted symmetric key is sent to the bidding Management server.
In one embodiment, the processor 502 of bidding Management server is also realizing following steps:
Bidding Management server is decrypted to obtain the encrypted symmetric key by the private key of bidding Management server
To the symmetric key；
Bidding Management server is decrypted to obtain the initial Bid Documents of encryption by the symmetric key
Initial Bid Documents are stated, to carry out saying mark according to the initial Bid Documents by tenderer.
It should be appreciated that in the embodiment of the present application, processor 502 can be central processing unit (Central
Processing Unit, CPU), which can also be other general processors, digital signal processor (Digital
Signal Processor, DSP), specific integrated circuit (Application Specific Integrated Circuit,
ASIC), ready-made programmable gate array (Field-Programmable GateArray, FPGA) or other programmable logic devices
Part, discrete gate or transistor logic, discrete hardware components etc..Wherein, general processor can be microprocessor or
The processor is also possible to any conventional processor etc..
Those of ordinary skill in the art will appreciate that be realize above-described embodiment method in all or part of the process,
It is that relevant hardware can be instructed to complete by computer program.The computer program can be stored in a storage medium,
The storage medium is computer readable storage medium.The computer program is held by least one processor in the computer system
Row, to realize the process step of the embodiment of the above method.
Therefore, the present invention also provides a kind of storage mediums.The storage medium can be computer readable storage medium.It is described
Storage medium is stored with the first computer program and second computer program, first computer program and second computer journey
Sequence can realize following steps when being executed respectively by the processor of the processor of bid terminal and bidding Management server:
Bid terminal will obtain encrypting initial Bid Documents by preset symmetric key after the encryption of initial Bid Documents；
Bid terminal stabs certification request, the timestamp certification request to preset timestamp certificate server sending time
Cryptographic Hash comprising the initial Bid Documents of encryption；
Bid terminal receiving time stabs the timestamp that certificate server is sent, and the timestamp and the encryption is initial
Bid Documents merge to obtain reference paper；
The reference paper is stored into block chain by bid terminal；
Bidding Management server obtains the reference paper from block chain, and obtains after parsing to the reference paper
To the initial Bid Documents of the encryption and the timestamp；
Whether bidding Management server judges the initial Bid Documents of encryption in the preset time according to the timestamp
It does not modify after node, it is whether qualified with the determination initial Bid Documents of encryption.
In one embodiment, the processor of bid terminal realizes the bid eventually executing first computer program
When the reference paper is stored into step in block chain by end, it is implemented as follows step:
The reference paper is encrypted to obtain digital signature；
The digital signature and the reference paper are sent to verifying node；
Receive it is described verifying node return block and the block is added in block chain structure, the block be by
Verify what node was generated according to the digital signature and the reference paper.
In one embodiment, the processor of bid terminal is realized described to described in execution first computer program
When reference paper is encrypted to obtain digital signature step, it is implemented as follows step:
The reference paper is encrypted to obtain digital digest according to hash algorithm；
The digital digest is encrypted to obtain digital signature according to the private key of pre-configuration.
In one embodiment, the processor of bidding Management server is realized described in the execution second computer program
Whether bidding Management server judges the initial Bid Documents of encryption after preset timing node according to the timestamp
Do not modify, with the initial Bid Documents of the determination encryption whether eligible paths when, be implemented as follows step:
Judge the time on the timestamp whether before the timing node；
If the time on the timestamp not before the timing node, determines the initial Bid Documents of encryption pre-
If timing node after modified；
If the time on the timestamp before the timing node, judges the Hash of the initial Bid Documents of encryption
Whether value is identical as the cryptographic Hash that the timestamp includes；
If the cryptographic Hash of the initial Bid Documents of encryption and the cryptographic Hash that the timestamp includes be not identical, described in judgement
Initial Bid Documents are encrypted to be modified after preset timing node；
If the cryptographic Hash of the initial Bid Documents of encryption is identical as the cryptographic Hash that the timestamp includes, described add is determined
Close initial Bid Documents are not modified after preset timing node.
In one embodiment, the processor of bid terminal also realizes following step when executing first computer program
It is rapid:
Bid terminal by the public key of bidding Management server to obtaining encrypted symmetric key after the symmetric key encryption,
And the encrypted symmetric key is sent to the bidding Management server.
In one embodiment, the processor of bidding Management server is also realized such as when executing the second computer program
Lower step:
Bidding Management server is decrypted to obtain the encrypted symmetric key by the private key of bidding Management server
To the symmetric key；
Bidding Management server is decrypted to obtain the initial Bid Documents of encryption by the symmetric key
Initial Bid Documents are stated, to carry out saying mark according to the initial Bid Documents by tenderer.
The storage medium can be USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), magnetic disk
Or the various computer readable storage mediums that can store program code such as CD.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware
With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This
A little functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Specially
Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not
It is considered as beyond the scope of this invention.
In several embodiments provided by the present invention, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary.For example, the division of each unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation.Such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.
The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.This hair
Unit in bright embodiment device can be combined, divided and deleted according to actual needs.In addition, in each implementation of the present invention
Each functional unit in example can integrate in one processing unit, is also possible to each unit and physically exists alone, can also be with
It is that two or more units are integrated in one unit.
If the integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product,
It can store in one storage medium.Based on this understanding, technical solution of the present invention is substantially in other words to existing skill
The all or part of part or the technical solution that art contributes can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, terminal or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, reference can be made to the related descriptions of other embodiments.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, the even these modifications and changes of the present invention range that belongs to the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of bidding documents management method characterized by comprising
Bid terminal will obtain encrypting initial Bid Documents by preset symmetric key after the encryption of initial Bid Documents；
Bid terminal stabs certification request to preset timestamp certificate server sending time, and the timestamp certification request includes
The cryptographic Hash of the initial Bid Documents of encryption；
Bid terminal receiving time stabs the timestamp that certificate server is sent, and the timestamp is encrypted initial bidding documents with described
File mergences obtains reference paper；
The reference paper is stored into block chain by bid terminal；
Bidding Management server obtains the reference paper from block chain, and institute is obtained after parsing to the reference paper
It states and encrypts initial Bid Documents and the timestamp；
Whether bidding Management server judges the initial Bid Documents of encryption in preset timing node according to the timestamp
It does not modify later, it is whether qualified with the determination initial Bid Documents of encryption.
2. the method according to claim 1, wherein the reference paper is stored into block by the bid terminal
In chain, comprising:
The reference paper is encrypted to obtain digital signature；
The digital signature and the reference paper are sent to verifying node；
It receives the block that the verifying node returns and the block is added in block chain structure, the block is by verifying
Node is generated according to the digital signature and the reference paper.
3. according to the method described in claim 2, it is characterized in that, described be encrypted to obtain the reference paper
Digital signature, comprising:
The reference paper is encrypted to obtain digital digest according to hash algorithm；
The digital digest is encrypted to obtain digital signature according to the private key of pre-configuration.
4. the method according to claim 1, wherein the bidding Management server judges according to the timestamp
Whether the initial Bid Documents of encryption do not modify after preset timing node, comprising:
Judge the time on the timestamp whether before the timing node；
If the time on the timestamp not before the timing node, determines the initial Bid Documents of encryption preset
It is modified after timing node.
5. according to the method described in claim 4, it is characterized in that, the bidding Management server judges according to the timestamp
Whether the initial Bid Documents of encryption do not modify after preset timing node, further includes:
It is if the time on the timestamp before the timing node, judges the cryptographic Hash of the initial Bid Documents of encryption
The no cryptographic Hash for including with the timestamp is identical；
If the cryptographic Hash of the initial Bid Documents of encryption and the cryptographic Hash that the timestamp includes be not identical, the encryption is determined
Initial Bid Documents are modified after preset timing node；
If the cryptographic Hash of the initial Bid Documents of encryption is identical as the cryptographic Hash that the timestamp includes, at the beginning of determining the encryption
Beginning Bid Documents are not modified after preset timing node.
6. the method according to claim 1, wherein the method also includes:
Bid terminal by the public key of bidding Management server to obtaining encrypted symmetric key after the symmetric key encryption, and will
The encrypted symmetric key is sent to the bidding Management server.
7. according to the method described in claim 6, it is characterized in that, the method also includes:
Bidding Management server is decrypted to obtain the encrypted symmetric key by the private key of bidding Management server
State symmetric key；
Bidding Management server is decrypted the initial Bid Documents of encryption by the symmetric key described first to obtain
Beginning Bid Documents, to carry out saying mark according to the initial Bid Documents by tenderer.
8. a kind of bidding documents management system, which is characterized in that the bidding documents management system includes bid terminal and bidding Management clothes
Business device, the bid terminal includes the first encryption unit, the first transmission unit, the first receiving unit and storage element, described
Bidding Management server includes resolution unit, the first judging unit, the first notification unit and the second notification unit, in which:
First encryption unit, for will obtain encrypting initial mark after the initial Bid Documents encryption by preset symmetric key
Written matter；
First transmission unit stabs certification request to preset timestamp certificate server sending time for submitting a tender terminal, described
Timestamp certification request includes the cryptographic Hash of the initial Bid Documents of encryption；
First receiving unit adds for the timestamp that receiving time stamp certificate server is sent, and by the timestamp with described
Close initial Bid Documents merge to obtain reference paper；
The reference paper is stored into block chain by storage element for submitting a tender terminal；
Resolution unit for obtaining the reference paper from block chain, and carries out the reference paper obtained after parsing
The initial Bid Documents of the encryption and the timestamp；
First judging unit, for according to the timestamp judge it is described encrypt initial Bid Documents whether when preset segmentum intercalaris
It does not modify after point, it is whether qualified with the determination bidding documents.
9. a kind of bidding documents management system, which is characterized in that including bid terminal and bidding Management server, the bid terminal
And bidding Management server includes memory, processor and is stored on the memory and can transport on the processor
The processor of capable computer program, the bid terminal and bidding Management server executes total when corresponding computer program
With realization such as method of any of claims 1-7.
10. a kind of computer readable storage medium, which is characterized in that the storage medium is stored with the first computer program and
Two computer programs, first computer program and second computer program ought be respectively by the processor of bid terminal and bids
The processor of management server can be realized when executing such as method of any of claims 1-7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682674.7A CN110532806A (en) | 2019-07-26 | 2019-07-26 | Bidding documents management method, system and computer readable storage medium |
| PCT/CN2019/121676 WO2021017350A1 (en) | 2019-07-26 | 2019-11-28 | Bidding document management method and system, and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682674.7A CN110532806A (en) | 2019-07-26 | 2019-07-26 | Bidding documents management method, system and computer readable storage medium |
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| CN110532806A true CN110532806A (en) | 2019-12-03 |
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| CN201910682674.7A Pending CN110532806A (en) | 2019-07-26 | 2019-07-26 | Bidding documents management method, system and computer readable storage medium |
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| WO (1) | WO2021017350A1 (en) |
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