CN110751544A - Bidding information, supervision information and bid evaluation information processing method, terminal and system - Google Patents
Bidding information, supervision information and bid evaluation information processing method, terminal and system Download PDFInfo
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- CN110751544A CN110751544A CN201910995973.6A CN201910995973A CN110751544A CN 110751544 A CN110751544 A CN 110751544A CN 201910995973 A CN201910995973 A CN 201910995973A CN 110751544 A CN110751544 A CN 110751544A
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- G06Q30/00—Commerce
- G06Q30/06—Buying, selling or leasing transactions
- G06Q30/08—Auctions
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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
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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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
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Abstract
The invention provides a bidding information processing method and terminal based on a block chain, a bidding supervision information processing method and terminal, a bid evaluation information processing method and terminal and a bidding system based on the block chain. The block chain comprises bidding nodes, expert nodes and supervision mechanism nodes, and the bidding information processing method comprises the following steps: encrypting the bidding information, and broadcasting the encrypted bidding information to a block chain network; generating an intelligent contract and broadcasting the intelligent contract into a blockchain network to extract a review expert node; and when a successful bid result is received, verifying the successful bid result, if the successful bid result passes the verification, encrypting the received contract file, and broadcasting the encrypted contract file to the block chain network. The invention improves the transparency of the bidding and avoids the major loss caused by tampering the bidding and tendering information.
Description
Technical Field
The invention relates to the technical field of block chains and application thereof, in particular to a bidding information processing method and terminal based on the block chains, a bidding supervision information processing method and terminal, a bid evaluation information processing method and terminal and a bidding system based on the block chains.
Background
The bidding degree is a management system established for reasonably distributing the rights, obligations and responsibilities of both bidding parties, and the establishment of strengthening the bidding degree is the requirement of market economy.
In the traditional bidding mode, bidding is based on paper documents, and related work is mainly completed on line. With the development of the internet, the traditional bidding mode begins to develop towards electronic bidding. Electronic bidding realizes electronic management and operation in the bidding process, can solve the unfairness phenomenon brought to each bidding party by many artificial subjective factors, has certain compulsory performance, reduces the difficulty of business operation, avoids deviation in business specification execution, reduces project risks, and realizes a public, fair and fair bidding market environment; meanwhile, the problems of data error, information asymmetry, repeated labor and the like caused by manual labor can be solved.
However, in the current electronic bidding, the bidding related files are stored in a centralized manner in the electronic bidding platform server, and if the server is tampered by hackers, a huge loss may be generated, which may cause problems such as unfair bidding. In addition, the transparency of each link of the electronic bidding and tendering needs to be further improved
Disclosure of Invention
In order to solve at least one aspect of the above problems in the prior art, an object of the present invention is to provide a bid information processing method and terminal based on a block chain, a bid supervision information processing method and terminal, a bid evaluation information processing method and terminal, and a bid system based on a block chain, which are intended to realize traceability and transparent disclosure of information of a bid item, prevent data from being tampered, and improve bid fairness.
To achieve the above object, as a first aspect of the present invention, there is provided a bid information processing method based on a block chain, the block chain including a bid node, an expert node, and a supervisor node, the bid information processing method including:
encrypting the bidding information, and broadcasting the encrypted bidding information to a block chain network;
generating an intelligent contract and broadcasting the intelligent contract into a blockchain network to extract review expert nodes, wherein the intelligent contract is used for: calculating a digital abstract of the block chain identifier of the expert node; integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents; selecting expert nodes of the digital abstract of the expert node block chain identification in the effective range of the digital abstract of the integrated bidding document file as the evaluation expert nodes; broadcasting the extracted evaluation expert node information to a blockchain network;
when receiving a bid-winning result, verifying the bid-winning result, and if the verification is passed, executing the following steps:
and encrypting the received contract file, and broadcasting the encrypted contract file to the block chain network.
Optionally, the bidding information includes information of a tenderer and information of a bidding item.
Optionally, the bidding information includes qualification information of bidders, bidding document,
wherein, the encrypting the bidding document file comprises:
and pre-encrypting the label file by using a predetermined first encryption algorithm.
Optionally, the pre-encrypting the ticket file using a predetermined first encryption algorithm includes encrypting the ticket file using a public key of the regulatory agency node.
As a second aspect of the present invention, there is provided a bidding supervision information processing method based on a block chain, where the block chain includes a bidding node, an expert node, and a supervisor node, the bidding supervision information processing method including:
the processed bidding document file is sent to a corresponding review expert node for review;
after receiving the evaluation result, decrypting the evaluation result by using a preset second decryption algorithm so as to summarize and determine a winning bid result;
and encrypting the successful bid result, and broadcasting the encrypted successful bid result to a block chain network.
As a third aspect of the present invention, there is provided a bid evaluation information processing method based on a blockchain, where the blockchain includes a bid inviting node, a bidding node, an expert node, and a supervisor node, the bid evaluation information processing method including:
processing the bidding document file to be reviewed to carry out review;
and pre-encrypting the evaluation result by using a second encryption algorithm corresponding to a predetermined second decryption algorithm, and broadcasting the encrypted evaluation result to the blockchain network.
As a fourth aspect of the present invention, there is provided a bid information processing terminal based on a block chain, the block chain including a bid node, an expert node, and a supervisor node, the bid information processing terminal serving as the bid node or the bid node, including an encryption module, a broadcast module, a verification module, and a contract generation module;
the encryption module is used for encrypting the bidding information;
the broadcasting module is used for broadcasting the encrypted bidding information to the block chain network;
the contract generation module is used for generating intelligent contracts, the broadcast module broadcasts the intelligent contracts into a blockchain network to extract review expert nodes,
wherein the intelligent contract is to: calculating a digital abstract of the block chain identifier of the expert node; integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents; selecting expert nodes of the digital abstract of the expert node block chain identification in the effective range of the digital abstract of the integrated bidding document file as the evaluation expert nodes; broadcasting the extracted evaluation expert node information to a blockchain network;
the verification module is used for verifying the winning bid result when the winning bid result is received;
if the verification result of the verification module is that the received contract file passes, the encryption module encrypts the received contract file, and the broadcast module broadcasts the encrypted contract file to the block chain network.
As a fifth aspect of the present invention, there is provided a bid supervising information processing terminal based on a blockchain including a bid node, an expert node, and a supervisor node, the bid supervising information processing terminal serving as the supervisor node, including: the system comprises a processing module, a summarizing module, a first encryption module and a first broadcasting module;
the processing module is used for processing the bidding document file into a file which can be evaluated by the evaluation expert node, and sending the processed bidding document file to the corresponding evaluation expert node for evaluation;
the summarizing module is used for decrypting the evaluation result by using a preset second decryption algorithm after receiving the evaluation result so as to summarize and determine a winning bid result;
the first encryption module is used for encrypting the bid-winning result and broadcasting the encrypted bid-winning result to a block chain network by using the first broadcasting module.
As a sixth aspect of the present invention, there is provided a bid evaluation information processing terminal based on a blockchain, the blockchain including a bid inviting node, a bidding node, an expert node, and a supervisor node, the bid evaluation information processing terminal serving as the expert node, including a review processing module, a second encryption module, and a second broadcast module;
the evaluation processing module is used for processing the bidding document file to be evaluated so as to evaluate;
the second encryption module is used for pre-encrypting the review result by using a second encryption algorithm corresponding to a preset second decryption algorithm, and broadcasting the encrypted review result to the block chain network by using the second broadcasting module.
As a seventh aspect of the present invention, there is provided a bid and tender system based on a block chain, the block chain including a bid and tender node, a bid node, an expert node, and a supervisor node, the bid and tender information processing terminal serving as the bid and tender node or the bid node, the bid and tender supervision information processing terminal serving as the supervisor node, and the evaluation information processing terminal serving as the expert node.
In the invention, the bidding information is stored in the block chain based on the block chain network, so that the public traceability of the bidding information is realized, and the transparency of bidding is improved; the bidding information is encrypted, so that false information can be prevented from being transmitted by a person with a fake identity, and loss caused by tampering of the bidding information can be avoided; the evaluation expert nodes are extracted by the intelligent contracts, the randomness and the objectivity of the selection process of the evaluation experts are realized, and the fairness, the justness and the openness of the bidding process are ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a bid information processing method provided by the present invention;
FIG. 2 is a flow chart of an embodiment of an intelligent contract extraction review expert node in the bid and bid information processing method according to the present invention;
FIG. 3 is a flow chart of a bid supervision information processing method provided by the present invention;
FIG. 4 is a flow chart of a bid evaluation information processing method provided by the present invention;
FIG. 5 is a block diagram of one embodiment of a block chain based bidding system provided by the present invention;
FIG. 6 is a block diagram of a bidding information processing terminal according to the present invention;
FIG. 7 is a block diagram of a bidding supervision information processing terminal according to the present invention;
FIG. 8 is a schematic block diagram of a comment making information processing terminal provided by the present invention;
FIG. 9 is a signaling diagram of one embodiment of a bidding system provided by the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As a first aspect of the present embodiment, a bid-placed information processing method based on a block chain is provided. As shown in fig. 5, the blockchain includes a bidding node 100 (a plurality of bidding nodes may exist in one blockchain network, but only one bidding node exists for bidding of one project), a bidding node 200 (a plurality of bidding nodes 200 may exist in one blockchain network), a supervisor node 300, and an expert node 400 (a plurality of expert nodes may exist in one blockchain network), wherein the bidding information processing method includes:
in step S110, encrypting the bid information, and broadcasting the encrypted bid information to the block chain network;
in step S120, generating a Smart contract (Smart contract) and broadcasting the Smart contract into a blockchain network to extract a review expert node;
in step S130, when a winning bid result is received, the winning bid result is verified, and if the winning bid result passes the verification, the following steps are performed:
in step S140, the received contract document is encrypted, and the encrypted contract document is broadcast to the blockchain network.
Wherein, as shown in fig. 2, the intelligent contract is used for executing the following steps:
in step S150, calculating a digital summary of the blockchain identifier of the expert node;
in step S160, integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents;
in step S170, selecting an expert node whose digital abstract of the block chain identifier of the expert node is within the effective range of the numerical abstract of the integrated bidding document file as the review expert node;
in step S180, the extracted review expert node information is broadcast into a blockchain network.
In the present embodiment, the bidding information may be bidding information or bidding information. The bid information processing method is executed by a bid information processing terminal. Of course, the bid information processing terminal can be used as both a bid node and a bid node. That is, the bid information processing terminal has both a bid function and a bid function.
The bid information processing method provided by the embodiment is executed in the block chain network, makes full use of the technologies of information encryption, file storage and the like of the block chain network, stores the bid information in the block chain, realizes the public traceability of the bid information and improves the transparency of the bid; the bidding information is encrypted, so that false information can be prevented from being transmitted by a person with a fake identity, and huge loss caused by tampering of the bidding information can be avoided; the evaluation expert nodes are extracted by the intelligent contracts, so that the randomness and the objectivity of the selection process of the evaluation experts are realized, and the fairness, the justness and the openness of the bidding process are ensured.
It is noted that a Smart contract (Smart contract) is a computer protocol intended to propagate, verify or execute contracts in an informative manner. In the blockchain, the intelligent contract is mainly used for automatically executing some predefined rules and terms based on the credible non-tamperproof data in the blockchain.
In the present embodiment, the intelligent contract is generated by the bidding node 100, and the bidding node 200 participating in the bidding of the item can bid after having signed the intelligent contract. The intelligent contract is mainly used for controlling the time of links such as bid opening and bid evaluation and the like except for extracting the evaluation expert node, and regularly scans information stored on a block chain to avoid user data from being tampered.
In this embodiment, the bidding node 100, the bidding node 200, the administrator node 300, and the expert node 400 of the block chain have their own public and private key pairs. The public and private key pair is mainly used for carrying out asymmetric encryption on bidding information. After the asymmetric encryption mode is used, only encrypted information needs to be transmitted in the process of transmitting information, a secret key does not need to be transmitted, and information leakage can be effectively prevented.
In addition, the public and private key pair in the block chain is also used for digital signature, namely, the sender utilizes a private key to encrypt, and the receiver utilizes a public key to decrypt, and due to the one-to-one correspondence relationship between the private key and the public key, if the information received by the receiver can be decrypted by using the public key of the sender, the fact that the received information really comes from the sender can be confirmed, so that the false information is prevented from being transmitted by a person with a fake identity.
In step S110, the encrypting the bid information includes: calculating a digital abstract of the bidding information; for information to be broadcast into a blockchain network, a digital signature is made using the private key of the node that sent the broadcast information. The information broadcast to the blockchain network comprises the bidding information text and the digital abstract thereof.
The digital digest is a one-way encryption algorithm. Specifically, a Hash function is used to "digest" (i.e., Hash) a message (plaintext) with an arbitrary length into a short message (ciphertext) with a fixed length (e.g., 128 bits). For the same Hash function, the results of the ciphertexts formed by different plain text digests are different, but the results of the same plain text digests are necessarily consistent, and more importantly, the plain text cannot be reversely deduced through the digital digests. Because of the above characteristics, the digital abstract is mainly used for preventing the information from being tampered and ensuring the integrity of the information.
In step S110, the digital digest is used in combination with a public-private key pair in the blockchain, so that a fake identity can be prevented from transmitting false information, and meanwhile, the information is effectively prevented from being tampered. The specific process is as follows:
uploading bidding information by a bidding node 100 or 200 serving as a sender, and performing hash operation on the bidding information to obtain a hash value MD of the bidding information; the bidding node 100 or 200 as the sender digitally signs the bidding information and the hash value using the private key of the sender node, and broadcasts the signed bidding information text and hash value into the blockchain network. Thus, after receiving the broadcast information, the receiving node can verify the digital signature by using the public key of the sending node, and if the digital signature passes the verification, the received broadcast information is proved to be from the sending node indeed, but not from a fake identity; and calculating a Hash value MD1 of the received bidding information original text by using the same Hash algorithm as the sender, comparing the Hash value MD1 with the Hash value MD, and if the Hash value MD1 is consistent with the Hash value MD, determining that the received original text is not tampered, otherwise, determining that the original text is tampered.
In step S130, in order to prevent a counterfeit regulatory agency from sending a false winning bid result, after receiving the winning bid result, the public key of the regulatory agency node 300 is used to verify the digital signature of the winning bid result, and if the verification passes, the authenticity of the received winning bid result can be verified.
In step S140, in order to ensure the authenticity of the uploaded contract, when the encrypted contract document is broadcasted to the blockchain network, the contracting party and the bidding party who wins the bid need to perform secondary signature on the contract document by using their respective private keys. And then, only the contract document which can be verified by the public key of the tenderer node and the public key of the successful bidder node is the real contract document.
In the embodiment, the public and private key pair of the block chain is combined with the digital abstract to encrypt the bidding information, so that not only can false identity transmission false information be prevented, but also huge loss caused by tampering of the bidding information can be avoided, and fairness, justness and openness of the bidding process are ensured.
In actual economic activities, the roles of the parties involved in bidding are not fixed, and a bidder in one bidding project may become a bidder in the next bidding project or a bidder may become a bidder. In order to effectively utilize the pre-constructed block chain to complete the bidding process and avoid the waste of resources caused by repeatedly establishing the bidding platform, the bidding information processing method of the invention can be used for the bidding node 100 and the bidding node 200.
Alternatively, when the bid information processing method is used for the bid node 100, the bid information includes information of a tenderer and information of a bid item.
Alternatively, when the bid information processing method is used for the bidding node 200, the bid information includes bidder qualification information, a bidding document,
wherein, the encrypting the bidding document file comprises:
and pre-encrypting the label file by using a predetermined first encryption algorithm.
In general, commercial or technical secrets of tenderers and bidders are involved in bidding documents, and in order to ensure that the secrets are not leaked to the outside, in the present invention, before the bidding documents are encrypted by using an encryption method inherent to a block chain, the bidding documents need to be pre-encrypted to ensure that only specific objects can be decrypted.
As an optional encryption and decryption algorithm of this embodiment, when performing pre-encryption on a markup document, an asymmetric encryption method may be used. That is, the public key of the receiver node is used to pre-encrypt the bidding document file, and correspondingly, the receiver can decrypt the bidding document file by using the private key of the receiver node. As described above, since the public keys correspond to the private keys one to one, a file encrypted using the public key can only be decrypted using the corresponding private key. In addition, the public key is public, the private key is not public, and only encrypted information is transmitted in the process of transmitting the information without transmitting the private key, so that the information leakage can be effectively prevented.
Because the above directly adopting the asymmetric encryption mode has low efficiency, and meanwhile, in order to share information to a plurality of receiver nodes, as another optional encryption and decryption algorithm of the embodiment, the method of encrypting the markup document by using a symmetric key and transmitting the symmetric key by using the asymmetric encryption can be adopted to perform pre-encryption on the markup document. Specifically, the sending party node adopts a symmetric key to pre-encrypt the bidding document file, when the bidding document file needs to be sent to a certain receiving party node, the public key of the receiving party node is used for encrypting the symmetric key, then the encrypted bidding document file and the symmetric key ciphertext are sent to the receiving party together, the receiving party node firstly uses a private key of the receiving party node to solve the symmetric key, and then uses the symmetric key to solve the original bidding document file.
As a second aspect of the present embodiment, a bid supervision information processing method based on a block chain is provided. As shown in fig. 5, the blockchain includes a bidding node 100 (a plurality of bidding nodes may exist in one blockchain network, but only one bidding node exists for bidding of one project), a bidding node 200 (a plurality of bidding nodes 200 may exist in one blockchain network), a supervisor node 300, and an expert node 400 (a plurality of expert nodes may exist in one blockchain network), wherein, as shown in fig. 3, the bidding supervision information processing method includes:
in step S210, the processed bidding document file is sent to the corresponding review expert node for review;
in step S220, after receiving the review result, the predetermined second decryption algorithm is used to decrypt the review result, so as to determine the winning bid in summary.
In step S230, the bid-closing result is encrypted, and the encrypted bid-closing result is broadcasted to the blockchain network.
In this embodiment, step S210 further includes:
in step S211, the bidding document pre-encrypted by using a predetermined first encryption algorithm is received and then verified, and the bidding document is decrypted by using a first decryption algorithm corresponding to the predetermined first encryption algorithm, so that the review expert can review the bidding document.
In step S212, the verified bid information is encrypted, and the encrypted bid information is broadcast to the blockchain network.
In order to maintain fairness, in step S211 of this embodiment, the supervising authority node 300 first extracts the hash value of the digital digest of the pre-encrypted bidding document file from the blockchain ledger book in the bidding stage to verify whether the bidding document file is tampered. And if the verification is passed, decrypting the pre-encrypted bidding document according to a first decryption algorithm corresponding to a preset first encryption algorithm so that a review expert can review the bidding document participating in bidding.
The predetermined first encryption algorithm is a first encryption algorithm used when the bidding node 200 performs pre-encryption on the bidding document file in step S211. Specifically, if the bidding node 200 performs pre-encryption using an asymmetric encryption method, the administrator node 300 decrypts using its own private key; if the bidding node 200 encrypts the bidding document by using the symmetric key and performs pre-encryption on the bidding document by using the asymmetric encryption transmission method, the monitoring authority node 300 decrypts the bidding document by using the private key of the monitoring authority node to obtain the symmetric key, and decrypts the pre-encrypted bidding document by using the symmetric key.
Since the review result of each expert node 400 also has confidentiality, it is also necessary to pre-encrypt the review result of each expert node 400. Therefore, in step S220, after the supervision agency node 300 receives the evaluation result, the evaluation result needs to be decrypted according to a predetermined second decryption algorithm, and then the evaluation result can be summarized to determine the winning bid result. The second encryption algorithm for pre-encrypting the review result and the corresponding second decryption algorithm may refer to the first encryption algorithm for pre-encrypting the bidding document file and the corresponding second decryption algorithm in this embodiment, and are not described herein again.
In the embodiment, the monitoring mechanism verifies and processes the bidding document file and the evaluation result, so that the bidding document file and the evaluation result can be effectively prevented from being falsified or counterfeited; in addition, the result of the evaluation is summarized to obtain the result of winning a bid by the supervisory organization node, which is beneficial to enhancing the supervision and management of the bidding process and ensuring the fairness and the justice of the bidding process.
As a third aspect of the present embodiment, there is provided a bid evaluation information processing method based on a block chain. As shown in fig. 5, the blockchain includes a bidding node 100 (a plurality of bidding nodes may exist in one blockchain network, but only one bidding node exists for bidding of one project), a bidding node 200 (a plurality of bidding nodes 200 may exist in one blockchain network), a supervisor node 300, and an expert node 400 (a plurality of expert nodes may exist in one blockchain network), wherein the bid evaluation information processing method includes, as shown in fig. 4:
in step S310, the submitted bidding document file is processed for review;
in step S320, the review result is pre-encrypted using a second encryption algorithm corresponding to a predetermined second decryption algorithm, and the encrypted review result is broadcast to the blockchain network.
Since the review result of each expert node 400 also has confidentiality, it is also necessary to pre-encrypt the review result of each expert node 400. The second encryption algorithm for pre-encrypting the review result may refer to the first encryption algorithm for pre-encrypting the bibliographic file in this embodiment, and will not be described herein again.
As a fourth aspect of the present embodiment, there is provided a bid information processing terminal based on a block chain, as shown in fig. 5, the block chain includes a bid node 100 (a plurality of bid nodes may exist in one block chain network, but only one bid node exists for bidding for one project), a bid node 200 (a plurality of bid nodes 200 may exist in one block chain network), a supervisor node 300, and an expert node 400 (a plurality of expert nodes may exist in one block chain network), wherein the bid information processing terminal includes a verification module M110, an encryption module M120, a contract generation module M130, and a broadcast module M140, as shown in fig. 6. The bid information processing terminal may be used as the bid node 100 or the bid node 200, and is configured to execute the bid information processing method provided in this embodiment, specifically:
the encryption module M120 is used for encrypting the bidding information;
the broadcasting module M140 is configured to broadcast the encrypted bidding information to the block chain network;
the contract generating module M130 is configured to generate an intelligent contract, and the broadcasting module M140 broadcasts the intelligent contract into the blockchain network to extract a review expert node;
the verification module M110 is configured to verify the bid-closing result when the bid-closing result is received;
if the verification result of the verification module M110 is that the received contract document is passed, the encryption module M120 encrypts the received contract document, and the broadcast module M140 broadcasts the encrypted contract document to the blockchain network.
Wherein the intelligent contract is to:
calculating a digital summary of the blockchain identification of the expert node 400;
integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents;
selecting the expert node 400 of which the digital abstract of the expert node 400 blockchain identifier is in the effective range of the numerical abstract of the integrated bidding document file as the evaluation expert node;
broadcasting the extracted review expert node information into a blockchain network.
The advantages and benefits of the bid information processing method have been described in detail above, and are not repeated here.
Optionally, the bidding information includes information of a tenderer and information of a bidding item.
Optionally, the bidding information processing terminal further includes a contract generating module M130,
optionally, the bidding information includes bidder qualification information and bidding document file.
Before the encrypting module M120 encrypts the bidding document file, the method further includes:
the encryption module M120 performs pre-encryption on the ticket file using a predetermined first encryption algorithm.
Optionally, the pre-encrypting the bidding document file by the encryption module M120 using a predetermined first encryption algorithm includes the encryption module M120 encrypting the bidding document file using the public key of the regulatory agency node 300.
The bid information processing terminal provided in the present embodiment is configured to execute the bid information processing method provided in the present embodiment, and the working principle and the beneficial effects of the bid information processing method have been described in detail above, and are not repeated here.
As a fifth aspect of the present embodiment, there is provided a bid and tender supervision information processing terminal based on a block chain, as shown in fig. 5, the block chain including a bid node 100 (a plurality of bid nodes may exist in one block chain network, but only one bid node exists for bid of one project), a bid node 200 (a plurality of bid nodes 200 may exist in one block chain network), a supervisor node 300, an expert node 400 (a plurality of expert nodes may exist in one block chain network), wherein as shown in fig. 7, the bid and tender supervision information processing terminal includes a processing module M210, a first encryption module M220, a summarizing module M230, and a first broadcast module M240; the bidding supervision information processing terminal serves as a supervision entity node 300 in a block chain to execute the bidding supervision information processing method provided by the present embodiment, and specifically:
the processing module M210 is used for processing the bidding document file into a file which can be reviewed by the review expert node, and sending the processed bidding document file to the corresponding review expert node for review;
the summarizing module M230 is configured to decrypt the review result by using a predetermined second decryption algorithm after receiving the review result, so as to summarize and determine a winning bid result;
the first encryption module M220 is configured to encrypt the bid-closing result, and broadcast the encrypted bid-closing result to the blockchain network by using the broadcast module M240.
Specifically, the processing module M210 is configured to verify the bidding document file pre-encrypted by using the predetermined first encryption algorithm, and decrypt the bidding document file by using a first decryption algorithm corresponding to the predetermined first encryption algorithm, so as to facilitate the review by the review expert;
and the processing module is also used for encrypting the verified bidding information and broadcasting the encrypted bidding information to the block chain network.
The processing module M210 is further configured to decrypt the review result by using a predetermined second decryption algorithm after receiving the review result.
The bid monitoring information processing terminal provided in this embodiment is used to execute the bid monitoring information processing method provided in this embodiment, and the working principle and the beneficial effects of the bid monitoring information processing method have been described in detail above, and are not described again here.
As a sixth aspect of the present embodiment, there is provided a bid evaluation information processing terminal based on a block chain, as shown in fig. 5, the blockchain includes a tendering node 100 (a plurality of tendering nodes may exist in one blockchain network, but only one tendering node exists for tendering of one project), a bidding node 200 (a plurality of bidding nodes 200 may exist in one blockchain network), a supervisor node 300, an expert node 400 (a plurality of expert nodes may exist in one blockchain network), as shown in fig. 8, the bid evaluation information processing terminal includes a review processing module M310, a second encryption module M320, and a second broadcast module M330, and is used as an expert node in a block chain, and the bid evaluation information processing terminal is used for executing the bid evaluation information processing method provided by the embodiment. Specifically, the method comprises the following steps:
the review processing module M310 is used for processing the bidding document files to be reviewed so as to be reviewed by experts;
the second encryption module M320 is configured to pre-encrypt the review result by using a second encryption algorithm corresponding to a predetermined second decryption algorithm, and broadcast the encrypted review result to the blockchain network by using the second broadcast module M330.
Specifically, the review processing module 310 is configured to decrypt the bidding document file;
optionally, the second encryption module M320 uses a second encryption algorithm corresponding to a predetermined second decryption algorithm to pre-encrypt the review result, and the second encryption module M320 uses the public key of the supervisor node 300 to encrypt the review result.
The bid evaluation information processing terminal provided by the present embodiment is configured to execute the bid evaluation information processing method provided by the present embodiment, and the working principle and the beneficial effects of the bid evaluation information processing method have been described in detail above, and are not described again here.
As a seventh aspect of the present embodiment, there is provided a bid and tender system based on a block chain including at least one bid and tender node 100, a plurality of tender nodes 200, a plurality of expert nodes 400, and at least one supervisor node 300, wherein the bid and tender information processing terminal serves as the bid and tender node 100 or 200, the supervisor information processing terminal serves as the supervisor node 300, and the bid and tender information processing terminal serves as the expert node 400.
An embodiment of the bid-soliciting and bidding system based on the block chain, which is provided by the present invention, executing the bid-soliciting information processing method, the bid-soliciting supervision information processing method, and the bid-evaluating information processing method provided by the present invention is described below, as shown in fig. 9.
In this embodiment, in the bidding system based on the block chain, each of the bidding node 100, the bidding node 200, the expert node 400, and the administrator node 300 has a public and private key pair. When each node sends broadcast information to the block chain, the broadcast information needs to be digitally signed by using the private key of each node. After receiving the broadcast information of each node, the accounting node in the block chain finds out the public key of the corresponding node by inquiring the block chain account book to verify the private key signature of the broadcast information; if the verification is passed, the broadcast information is recorded into a new block.
In the bid preparation step, the bid node 100 encrypts the information of the bid candidate, the information of the bid item, and the consignment, and the encryption process includes: and calculating the digital digest hash value of the tenderer information, the tenderer item information and the trust contract equivalent, taking the information and the digital digest hash value thereof as broadcast information, signing the broadcast information by using a private key of the tenderer node 100, and then broadcasting the broadcast information to the block chain network.
The bidding node 100 generates an intelligent contract that the bidding node 200, which participates in the bidding of the project, must sign before bidding. The intelligent contract is mainly used for controlling the time of links such as bid opening and bid evaluation, and meanwhile, information stored in the block chain is scanned regularly, so that user data is prevented from being tampered.
The bidding link, the bidding node 200, encrypts the company qualification information, including: calculating the hash value of the digital abstract of the qualification file, taking the qualification file and the digital abstract as broadcast information, signing the broadcast information by using a private key of a bidding node 200, and broadcasting the signed broadcast information to a block chain network; the bidding node 200 encrypts the bidding document file, including: the method comprises the steps of pre-encrypting a bidding document file by using a public key of a supervision mechanism node 300 to obtain an encrypted bidding document file, calculating a digital abstract hash value of the encrypted bidding document file, using the encrypted bidding document file and the digital abstract hash value as broadcast information, signing the broadcast information by using a private key of a bidding node 200, and then broadcasting the broadcast information to a block chain network.
And in the bidding link, the intelligent contract extracts the evaluation expert nodes and broadcasts the extracted evaluation expert node information to the block chain. The supervision agency node 300 receives the pre-encrypted bidding document file, takes out the digital digest hash value of the bidding document file from the blockchain account book for verification, determines that the bidding document file is not tampered, and decrypts the encrypted bidding document file by using the private key of the supervision agency node 300 to obtain a decrypted bidding document file.
The supervising authority node 300 performs encryption processing on the verified bid and bid information, including: the bidding information is encrypted by using a public key of an expert node 400 which is extracted by an intelligent contract and is used as a review expert, and the bidding information is signed by using a private key of the supervisor node 300 and then is broadcasted to the block chain.
And in the bid evaluation link, after receiving the bid document file sent by the monitoring authority node 300, the expert node serving as an expert in evaluation decrypts the bid document file, and the bid evaluation link comprises the following steps: and verifying the digital signature of the bidding document file by using the public key of the supervision agency node 300, and if the digital signature passes the verification, decrypting the bidding document file by using the private key of the supervision agency node. And then the evaluation is performed.
After the evaluation is finished, the expert node serving as an evaluation expert encrypts evaluation results, and the method comprises the following steps: the public key of the supervision organization node 300 is used for encrypting the scores and the comments, the encrypted scores and the encrypted comments are used as broadcast information, and the broadcast information is signed by the private key of the supervision organization node 300 and then is broadcast to the block chain.
In the calibration step, after receiving the encrypted review result, the supervisory node 300 decrypts the encrypted review result, including: and verifying the digital signature of the encrypted evaluation result by using a public key of an expert node serving as an evaluation expert, and decrypting the encrypted evaluation result by using a private key of the digital signature verification system if the verification is passed. And then, summarizing all the evaluation results, determining the successful bidding party, and broadcasting the information of the bidding items, the block chain identification of the successful bidding party node and the like into the block chain.
A signing link, after the tenderer node and the bidding party node receiving the broadcast message, verifying the private key signature of the broadcast message, if the verification is passed, both parties get contact to sign the contract offline, and after the contract and the hash value corresponding to the contract file are secondarily signed by the private keys of both parties, the broadcast message is sent to the block chain network
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and scope of the invention, and such modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A bid-inviting and bidding information processing method based on a block chain, wherein the block chain comprises a bid-inviting node, a bidding node, an expert node and a supervisor node, and is characterized by comprising the following steps:
encrypting the bidding information, and broadcasting the encrypted bidding information to a block chain network;
generating an intelligent contract and broadcasting the intelligent contract into a blockchain network to extract review expert nodes, wherein the intelligent contract is used for: calculating a digital abstract of the block chain identifier of the expert node; integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents; selecting expert nodes of the digital abstract of the expert node block chain identification in the effective range of the digital abstract of the integrated bidding document file as the evaluation expert nodes; broadcasting the extracted evaluation expert node information to a blockchain network;
when receiving a bid-winning result, verifying the bid-winning result, and if the verification is passed, executing the following steps:
and encrypting the received contract file, and broadcasting the encrypted contract file to the block chain network.
2. The bid information processing method according to claim 1, wherein the bid information includes tenderer information and tender item information.
3. The bid information processing method of claim 1, wherein the bid information includes bidder qualification information, a bidding document,
wherein, the encrypting the bidding document file comprises:
and pre-encrypting the label file by using a predetermined first encryption algorithm.
4. The bid information processing method of claim 3, wherein pre-encrypting the bid document using a predetermined first encryption algorithm comprises encrypting the bid document using a public key of the regulatory agency node.
5. A bid-calling supervision information processing method based on a block chain, wherein the block chain comprises a bid-calling node, a bid node, an expert node and a supervision mechanism node, and is characterized by comprising the following steps:
the processed bidding document file is sent to a corresponding review expert node for review;
after receiving the evaluation result, decrypting the evaluation result by using a preset second decryption algorithm so as to summarize and determine a winning bid result;
and encrypting the successful bid result, and broadcasting the encrypted successful bid result to a block chain network.
6. A bid evaluation information processing method based on a block chain, wherein the block chain comprises a bid inviting node, a bidding node, an expert node and a supervision mechanism node, and is characterized by comprising the following steps:
processing the bidding document file to be reviewed to carry out review;
and pre-encrypting the evaluation result by using a second encryption algorithm corresponding to a predetermined second decryption algorithm, and broadcasting the encrypted evaluation result to the blockchain network.
7. A bid-inviting and bidding information processing terminal based on a block chain, wherein the block chain comprises a bid-inviting node, a bidding node, an expert node and a supervision agency node, and is characterized in that the bid-inviting and bidding information processing terminal is used as the bid-inviting node or the bidding node and comprises an encryption module, a broadcasting module, a verification module and a contract generation module;
the encryption module is used for encrypting the bidding information;
the broadcasting module is used for broadcasting the encrypted bidding information to the block chain network;
the contract generation module is used for generating intelligent contracts, the broadcast module broadcasts the intelligent contracts into a blockchain network to extract review expert nodes,
wherein the intelligent contract is to: calculating a digital abstract of the block chain identifier of the expert node; integrating all the bidding documents, and calculating the digital abstract of the integrated bidding documents; selecting expert nodes of the digital abstract of the expert node block chain identification in the effective range of the digital abstract of the integrated bidding document file as the evaluation expert nodes; broadcasting the extracted evaluation expert node information to a blockchain network;
the verification module is used for verifying the winning bid result when the winning bid result is received;
if the verification result of the verification module is that the received contract file passes, the encryption module encrypts the received contract file, and the broadcast module broadcasts the encrypted contract file to the block chain network.
8. A bid-calling regulatory information processing terminal based on a blockchain including a bid-calling node, a bid node, an expert node, and a regulatory agency node, wherein the bid-calling regulatory information processing terminal functions as the regulatory agency node, comprising: the system comprises a processing module, a summarizing module, a first encryption module and a first broadcasting module;
the processing module is used for processing the bidding document file into a file which can be evaluated by the evaluation expert node, and sending the processed bidding document file to the corresponding evaluation expert node for evaluation;
the summarizing module is used for decrypting the evaluation result by using a preset second decryption algorithm after receiving the evaluation result so as to summarize and determine a winning bid result;
the first encryption module is used for encrypting the bid-winning result and broadcasting the encrypted bid-winning result to a block chain network by using the first broadcasting module.
9. A bid evaluation information processing terminal based on a block chain, wherein the block chain comprises a bid inviting node, a bidding node, an expert node and a supervision mechanism node, and is characterized in that the bid evaluation information processing terminal is used as the expert node and comprises a review processing module, a second encryption module and a second broadcast module;
the evaluation processing module is used for processing the bidding document file to be evaluated so as to evaluate;
the second encryption module is used for pre-encrypting the review result by using a second encryption algorithm corresponding to a preset second decryption algorithm, and broadcasting the encrypted review result to the block chain network by using the second broadcasting module.
10. A bidding system based on a block chain, wherein the block chain comprises a bidding node, an expert node, and a supervisor node, wherein the bidding information processing terminal of claim 7 is used as the bidding node or the bidding node, the bidding supervision information processing terminal of claim 8 is used as the supervisor node, and the bid evaluation information processing terminal of claim 9 is used as the expert node.
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