CN112288555A - Anonymous auction method, device and medium based on block chain - Google Patents
Anonymous auction method, device and medium based on block chain Download PDFInfo
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Abstract
The application discloses a block chain-based anonymous auction method, device and medium. The method comprises the steps of obtaining auction information of auction products, and uploading the auction information to an anonymous auction block chain; acquiring auction information of an auction end, wherein the auction information at least comprises auction bids; randomly generating random data based on the auction bid according to the intelligent contract, and calculating a hash value of the sum of the auction bid and the random data; and comparing the auction bid with the current highest bid on the anonymous auction block chain according to the intelligent contract, and uploading the auction bid and the hash value to the anonymous auction block chain to form a new current highest bid if the auction bid is higher than the current highest bid. The method disclosed by the application can effectively reduce the privacy leakage risk in the traditional auction process, and the auction end is anonymous on the premise that the whole process is public and verifiable; in the auction process, the third party supervising end can acquire key data in the auction process, and the auction end can verify the correctness of the auction result.
Description
Technical Field
The present application relates to the field of blockchain technologies, and in particular, to a method, an apparatus, and a medium for anonymous auction based on blockchain.
Background
A lot of risk points of privacy disclosure exist in a traditional auction mode, and fairness and privacy in the auction process are difficult to guarantee. The auction facility has mastered a wealth of sensitive information during the auction process. For example, an auctioneer in an auction facility can know the bid price of each auction site and also know certain identity information of each auction site; meanwhile, the bidding price of other auction terminals can be known between auction terminals, or the identity information of other auction terminals can be known. This results in the traditional auction mode with bids and deals that are highly dependent on the auctioneer's honesty. In addition to auction accidents, auctions centered on bidding have also derived diverse activities such as procurement bidding, financing bidding, advertising bidding, etc. of goods.
With the continuous development of the blockchain technology, the characteristics of decentralization, distrust, traceability, anonymity and the like of the blockchain technology can effectively overcome and improve the problems existing in the traditional auction mode.
Therefore, there is a need to develop a new method, apparatus and medium for anonymous auction based on block chain, so as to overcome and improve one or more of the above-mentioned disadvantages in the prior art, or at least to propose an effective alternative method to solve the above-mentioned problems.
Disclosure of Invention
The embodiment of the specification provides a method, equipment and a medium for anonymous auction based on a block chain, which are used for solving the following technical problems in the prior art: the traditional auction mode has the risk of privacy disclosure, and the fairness and the privacy in the auction process are difficult to ensure.
The embodiment of the specification adopts the following technical scheme:
a method of anonymous auction based on blockchain, wherein the method comprises:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain to form a new current highest bid.
Further, the auction information includes at least one of: auction item information, auction mode, auction time, auction starting price.
Further, the method further comprises:
and acquiring a signature hash value obtained by signing the hash value by the auction end by using a private key of the auction end, and uploading the signature hash value to an anonymous auction block chain.
Further, the method further comprises:
and acquiring an encrypted hash value obtained by encrypting the signature hash value by the auction side by adopting a public key of a third party supervision side, and uploading the encrypted hash value to an anonymous auction block chain.
Further, the method further comprises:
acquiring registration information of the auction end;
and obtaining deposit payment information of the auction end, and if the deposit payment information of the auction end does not accord with preset rules, invalidating the auction bid sent by the auction end.
Further, the auction information further includes a minimum amplification, the method further comprising:
calculating a difference value of the auction bid higher than the current highest bid according to an intelligent contract,
and if the difference value is smaller than the minimum increment, the auction bid is invalid.
Further, the random data adopts 32-bit 16-system numbers.
Further, a Secure Hash Algorithm (SHA) is employed to compute a Hash value of the sum of the auction bid and the random data.
An apparatus for anonymous auction based on blockchain, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
A non-transitory computer storage medium for anonymous auction based on blockchain, storing computer-executable instructions configured to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects:
(1) according to the method for the anonymous auction based on the block chain, which is exemplified in the embodiment of the description, by constructing the anonymous auction block chain, the auction end can perform anonymous auction on the premise that the whole process is public and verifiable, and the user does not need to worry about revealing identity information. Meanwhile, except for the auction end sending out the auction bid, a third party cannot acquire random data generated randomly based on the auction bid, so that the auction end can prove that the auction end has ownership over the auction bid and can verify the correctness of the auction result.
(2) In the method for anonymous auction based on block chain as exemplified in the embodiment of the present specification, the auction side signs the hash value with its private key, and can further confirm that it has ownership on the auction bid.
(3) In the method for anonymous auction based on the blockchain, which is exemplified in the embodiment of the description, the public key of the third party supervising end is used for encrypting the signature hash value, if the auction end wants to repudiate the auction behavior of the third party supervising end, the encrypted hash value can be obtained from the blockchain, and the third party supervising end decrypts the encrypted hash value by using the private key of the third party supervising end to obtain the signature hash value, so that the signature of the auction end can be confirmed, and the repudiation of the auction end is prevented.
(4) In the method for anonymous auction based on block chain, which is exemplified by the embodiment of the specification, the auction side is qualified to participate in the auction only after registering the identity on the anonymous auction block chain and paying the deposit according to the specification.
(5) The method for anonymous auction based on block chains, which is exemplified in the embodiments of the present specification, can effectively guarantee the order of the auction process and prevent random or malicious bidding by setting the minimum increase of bids in the auction process.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flow chart of a method for anonymous auction based on a blockchain according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more apparent, the technical solutions of the present disclosure will be clearly and completely described below with reference to the specific embodiments of the present disclosure and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step based on the embodiments in the description belong to the protection scope of the present application.
First, the technical concept of the technical solution disclosed in the present invention will be explained. A lot of risk points of privacy disclosure exist in a traditional auction mode, and fairness and privacy in the auction process are difficult to guarantee. The auction houses have mastered a wealth of sensitive information during the auction process, and the bidding and closing in traditional auctions are greatly dependent on the integrity of the auctioneer. With the continuous development of the blockchain technology, the characteristics of decentralization, distrust, traceability, anonymity and the like of the blockchain technology can effectively overcome and improve the problems existing in the traditional auction mode.
Therefore, the embodiment provides a method, a device and a medium for anonymous auction based on block chains. The anonymous auction method relies on the cryptology theory, and the auction end conducts anonymous auction on the premise that the whole process is public and verifiable. In the auction process, the supervisor can obtain key data in the auction process, and the auction end can verify the correctness of the auction result.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings. Fig. 1 is a schematic flow chart of a method for anonymous auction based on a blockchain according to an embodiment of the present disclosure.
As shown in fig. 1, a method of anonymous auction based on a blockchain, wherein the method includes acquiring auction information of an auction product, and uploading the auction information to the anonymous auction blockchain; acquiring auction information of an auction end, wherein the auction information at least comprises auction bids; randomly generating random data based on the auction bid according to the intelligent contract, and calculating the hash value of the sum of the auction bid and the random data; and comparing the auction bid with the current highest bid on the anonymous auction block chain according to the intelligent contract, and uploading the auction bid and the hash value to the anonymous auction block chain to form a new current highest bid if the auction bid is higher than the current highest bid.
Wherein the auction information includes at least one of: auction item information, auction mode, auction time, auction starting price.
In the method for anonymous auction based on the blockchain in the embodiment, by constructing the anonymous auction blockchain, the auction end can perform anonymous auction on the premise that the entire process is public and verifiable, and does not worry about revealing identity information. Meanwhile, except for the auction end sending out the auction bid, a third party cannot acquire random data generated randomly based on the auction bid, so that the auction end can prove that the auction end has ownership over the auction bid and can verify the correctness of the auction result.
In this embodiment, the method for anonymous auction based on the blockchain further includes obtaining a signed hash value obtained by signing the hash value with a private key of the auction side, and uploading the signed hash value to the anonymous auction blockchain. The auction side signs the hash value by using a private key of the auction side, and can confirm that the auction side has ownership of the auction bid. Once no new auction end has bid again, the auction ends and the auction end can confirm that it is the winning bid end by its private key signature.
In this embodiment, the method for anonymous auction based on the blockchain further includes acquiring an encrypted hash value obtained by encrypting the signature hash value by the auction side using the public key of the third party supervision side, and uploading the encrypted hash value to the anonymous auction blockchain. The signature hash value is encrypted by adopting a public key of a third party supervision terminal, so that the situation that the auction bid of the auction terminal is regret can be prevented. If the auction end wants to repudiate the auction bid, the encrypted hash value can be obtained from the block chain, and the third party supervision end decrypts the encrypted hash value by adopting the private key of the third party supervision end to obtain the signed hash value, so that the signature of the auction end can be confirmed, and the repudiation of the auction end is prevented.
In this embodiment, the method for anonymous auction based on block chain further includes acquiring registration information of an auction end; and obtaining deposit payment information of the auction end, and if the deposit payment information of the auction end does not accord with preset rules, invalidating the auction bid sent by the auction end. Only after registering identity and paying deposit according to the regulation on the anonymous auction block chain, the auction end is qualified to participate in the auction, so that the condition of malicious auction is prevented.
In this embodiment, the method for anonymous auction based on blockchain further includes calculating a difference value that the auction bid is higher than the current highest bid according to the smart contract, and if the difference value is smaller than the minimum increment, the auction bid is invalid. By setting the minimum increase of the bidding in the auction process, the order of the auction process can be effectively ensured, and random or malicious bidding is prevented.
In the present embodiment, the random data is a 32-bit 16-ary number.
In this embodiment, a Secure Hash Algorithm (SHA) is used to compute a Hash of the sum of the auction bid and the random data.
For ease of understanding, the specific contents of the above anonymous auction method based on block chains are further described below:
first, an anonymous auction block chain is constructed. The anonymous auction block chain at least comprises a plurality of nodes such as an auction end and a third party supervision end. The auction terminals are preferably registered to be nodes on a block chain respectively, and are qualified to participate in the auction after registration authentication and payment of a deposit.
And linking the auction item information by the auction houses, wherein the auction information at least comprises one or more of the auction item information, auction modes, auction time, starting price and the like.
Based on the pre-written intelligent contract, the input parameters of the auction end of each bid comprise the auction bid and a large (32-bit 16-digit) random number generated randomly. The smart contract then compares whether the bid exceeds the current maximum bid and if so issues a hash value computed by SHA256 ("bid" + "16-bit random number") along with the input. Meanwhile, the auction side signs the calculated hash by using a private key of the auction side, encrypts the hash by using a public key of an authoritative third party supervision end and records the hash on the block chain.
Once no new bidder has bid again, the auction ends. Then, the final bid price of the winning bid end self-certification is presented by itself. Since a third party cannot obtain a 16-digit random number other than the winning price, except for the bidder providing this bid. That is, only the successful bid end can present 16-bit random number and the successful bid price are calculated together to obtain the hash value of the successful bid price, thereby proving the ownership of the successful bid price in the middle.
On the other hand, if the winning bid end wants to repudiate the own bid and winning bid, the hash signature of the auction end for adding random number to the bid can be obtained from the block chain, and the repudiation of the winning bid end is prevented after the hash signature is decrypted by the private key of the authoritative third party supervision end.
The embodiment also provides a device for anonymous auction based on block chain, which includes:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
The present embodiments also provide a non-volatile computer storage medium for anonymous auction based on blockchains, storing computer-executable instructions configured to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device and media embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference may be made to some descriptions of the method embodiments for relevant points.
The device and the medium provided by the embodiment of the application correspond to the method one to one, so the device and the medium also have the similar beneficial technical effects as the corresponding method, and the beneficial technical effects of the method are explained in detail above, so the beneficial technical effects of the device and the medium are not repeated herein.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is directed to methods, apparatus (systems), and computer program products according to embodiments of the present invention
A flowchart and/or block diagram of an article. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for anonymous auction based on blockchain, the method comprising:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain to form a new current highest bid.
2. The method for anonymous auction based on block chain of claim 1, wherein:
the auction information includes at least one of: auction item information, auction mode, auction time, auction starting price.
3. The method for anonymous auction based on block chain according to claim 1, further comprising:
and acquiring a signature hash value obtained by signing the hash value by the auction end by using a private key of the auction end, and uploading the signature hash value to an anonymous auction block chain.
4. The method for anonymous auction based on block chain of claim 3, further comprising:
and acquiring an encrypted hash value obtained by encrypting the signature hash value by the auction side by adopting a public key of a third party supervision side, and uploading the encrypted hash value to an anonymous auction block chain.
5. The method for anonymous auction based on block chain according to claim 1, further comprising:
acquiring registration information of the auction end;
and obtaining deposit payment information of the auction end, and if the deposit payment information of the auction end does not accord with preset rules, invalidating the auction bid sent by the auction end.
6. The method for anonymous auction based on blockchain according to claim 1, wherein the auction information further includes a minimum amplification, the method further comprising:
calculating a difference value of the auction bid higher than the current highest bid according to an intelligent contract,
and if the difference value is smaller than the minimum increment, the auction bid is invalid.
7. The method for anonymous auction based on block chain of claim 1, wherein:
the random data adopts 32-bit 16-system numbers.
8. The method for anonymous auction based on block chain of claim 1, wherein:
a Secure Hash Algorithm (SHA) is employed to compute a Hash value of the sum of the auction bid and the random data.
9. An apparatus for anonymous auction based on blockchain, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
10. A non-transitory computer storage medium for anonymous auction based on blockchain, storing computer-executable instructions configured to:
acquiring auction information of an auction product, and uploading the auction information to an anonymous auction block chain;
acquiring auction information of an auction end, wherein the auction information at least comprises auction bids;
randomly generating random data based on the auction bid according to an intelligent contract, and calculating a hash value of the sum of the auction bid and the random data;
comparing the auction bid with a current highest bid on an anonymous auction blockchain according to a smart contract,
and if the auction bid is higher than the current highest bid, uploading the auction bid and the hash value to an anonymous auction block chain.
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| CN202010759869.XA CN112288555A (en) | 2020-07-31 | 2020-07-31 | Anonymous auction method, device and medium based on block chain |
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| CN202010759869.XA CN112288555A (en) | 2020-07-31 | 2020-07-31 | Anonymous auction method, device and medium based on block chain |
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| CN112950339A (en) * | 2021-03-09 | 2021-06-11 | 湖南大学 | Bill financing method, system, equipment and medium based on intelligent auction platform |
| CN113065934A (en) * | 2021-02-21 | 2021-07-02 | 西安电子科技大学 | Auction method and system with verifiable privacy, computer equipment and application |
| CN113112340A (en) * | 2021-04-21 | 2021-07-13 | 中钞***产业发展有限公司杭州区块链技术研究院 | Vikri auction method, device and system based on block chain technology |
| CN114626852A (en) * | 2022-03-24 | 2022-06-14 | 国网智能电网研究院有限公司 | Transaction method based on block chain and transaction block chain system |
| CN115051829A (en) * | 2022-04-25 | 2022-09-13 | 广东电网有限责任公司广州供电局 | Anonymous power bidding transaction method, system and medium based on block chain |
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2020
- 2020-07-31 CN CN202010759869.XA patent/CN112288555A/en not_active Withdrawn
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| CN113065934A (en) * | 2021-02-21 | 2021-07-02 | 西安电子科技大学 | Auction method and system with verifiable privacy, computer equipment and application |
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| CN112950339A (en) * | 2021-03-09 | 2021-06-11 | 湖南大学 | Bill financing method, system, equipment and medium based on intelligent auction platform |
| CN113112340A (en) * | 2021-04-21 | 2021-07-13 | 中钞***产业发展有限公司杭州区块链技术研究院 | Vikri auction method, device and system based on block chain technology |
| CN114626852A (en) * | 2022-03-24 | 2022-06-14 | 国网智能电网研究院有限公司 | Transaction method based on block chain and transaction block chain system |
| CN115051829A (en) * | 2022-04-25 | 2022-09-13 | 广东电网有限责任公司广州供电局 | Anonymous power bidding transaction method, system and medium based on block chain |
| CN115051829B (en) * | 2022-04-25 | 2023-10-20 | 广东电网有限责任公司广州供电局 | Anonymous electric power bidding transaction method, system and medium based on blockchain |
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