CN111260436A - Method and device for screening purchasers - Google Patents
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Abstract
The invention discloses a method and a device for screening buyers, wherein the method comprises the following steps: sending wireless spectrum sales information to a blockchain network so that a purchaser can obtain the wireless spectrum sales information, wherein the wireless spectrum sales information comprises distributable frequency band information, first deadline time and second deadline time, and the second deadline time is later than the first deadline time; before the first deadline is over, receiving a first hash value returned by the buyer, wherein the first hash value is generated by the buyer according to first bid information, and the first bid information is generated according to distributable frequency band information; receiving second bid information transmitted by the purchaser before a second deadline expires, the second deadline beginning at a time equal to the deadline of the first deadline; and screening to obtain qualified buyers according to the second bidding information and the first hash value. The safety of the bidding information is ensured, so that the sale of the frequency spectrum resources can be carried out fairly and fairly.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method and a device for screening buyers.
Background
The wireless spectrum is a scarce resource, and how to provide more communication opportunities for more users by using the limited spectrum resource is worthy of research. With The development of The 5th Generation Mobile Networks (5G) technology, 5G Networks try to utilize The spectrum resources of higher frequency bands for wireless transmission.
In the construction process of the 5G base station, each device wants to acquire the spectrum resources in the high frequency bands, but because the radio management organization needs to manually perform approval and operation when approving and inquiring the applicant who applies for the spectrum resources in each frequency band, the efficiency is low, and a large amount of human resources are wasted. Meanwhile, when each applicant reports the bid information, the bid information of one applicant may be acquired by other applicants, so that the spectrum resource is unfair in sale, and the construction and development of the 5G base station are not facilitated.
Disclosure of Invention
Therefore, the invention provides a method and a device for screening buyers, which aim to solve the problem that in the prior art, due to the fact that the safety of the bidding information of an applicant purchasing frequency band resources cannot be ensured, the spectrum resources are unfair to sell.
In order to achieve the above object, a first aspect of the present invention provides a method for screening buyers, the method comprising: sending wireless spectrum sales information to a blockchain network so that a purchaser can obtain the wireless spectrum sales information, wherein the wireless spectrum sales information comprises distributable frequency band information, first deadline time and second deadline time, and the second deadline time is later than the first deadline time; before the first deadline is over, receiving a first hash value returned by the buyer, wherein the first hash value is generated by the buyer according to first bid information, and the first bid information is generated according to distributable frequency band information; receiving second bid information transmitted by the purchaser before a second deadline expires, the second deadline beginning at a time equal to the deadline of the first deadline; and screening to obtain qualified buyers according to the second bidding information and the first hash value.
In some embodiments, the step of filtering the qualified buyers according to the second bidding information and the first hash value comprises: verifying a private key signature of a timestamp to obtain a first verification result, wherein the timestamp is time information generated by a timestamp server; calculating a second hash value according to the second bid information; comparing the first hash value with the second hash value to determine a second verification result; and screening to obtain qualified buyers according to the first verification result and the second verification result.
In some embodiments, the step of screening qualified buyers according to the first and second verification results comprises: if the first verification result is that the private key signature of the time stamp passes the verification, and the second verification result is that the first hash value is equal to the second hash value, determining that the purchaser is a qualified purchaser; otherwise, the purchaser is determined to be an unqualified purchaser.
In some embodiments, after the step of filtering to obtain qualified buyers according to the second bidding information and the first hash value, the method further comprises: screening and determining authorized buyers according to the reserve price information in the distributable frequency band information and the qualified second bid information of the buyers; writing second bid information for the authorized buyer into the blockchain ledger, the second bid information including a timestamp, a bid value, and a blockchain identification for the authorized buyer.
In some embodiments, the step of receiving the second bid information sent by the buyer comprises: and decrypting the second bidding information by adopting a private key of the radio management mechanism server according to a pre-agreed algorithm to obtain the decrypted second bidding information.
In some embodiments, the step of receiving the first hash value returned by the purchaser comprises: and decrypting the first hash value by adopting a private key of the radio management mechanism server according to a predetermined algorithm to obtain the decrypted first hash value.
In some embodiments, the purchaser includes at least two of a satellite earth station node server, an operator node server, a fixed service station node server, and a radio astronomical station node server.
In order to achieve the above object, a second aspect of the present invention provides a screening apparatus comprising: the wireless spectrum information sending module is used for sending wireless spectrum sales information to the blockchain network so that a purchaser can obtain the wireless spectrum sales information, wherein the wireless spectrum sales information comprises distributable frequency band information, first deadline time and second deadline time, and the second deadline time is later than the first deadline time; the first receiving module is used for receiving a first hash value returned by the buyer before the first deadline is finished, wherein the first hash value is generated by the buyer according to first bid information, and the first bid information is generated according to distributable frequency band information; a second receiving module, configured to receive second bid information sent by the buyer before a second deadline expires, where a starting time of the second deadline is equal to an ending time of the first deadline; and the screening module is used for screening and obtaining qualified buyers according to the second bidding information and the first hash value.
In some embodiments, a screening module, comprising: the first verification submodule is used for verifying the private key signature of the timestamp to obtain a first verification result, and the timestamp is time information generated by the timestamp server; the calculation submodule is used for calculating a second hash value according to the second bidding information; the second verification submodule is used for comparing the first hash value with the second hash value and determining a second verification result; and the screening submodule is used for screening qualified buyers according to the first verification result and the second verification result.
In some embodiments, the apparatus further comprises: the authorization module is used for screening and determining the authorized buyers according to the reserve price information in the distributable frequency band information and the qualified second bid information of the buyers; and the writing module is used for writing second bidding information of the authorized buyer into the blockchain ledger, wherein the second bidding information comprises a timestamp, a reporting value and a blockchain identifier of the authorized buyer.
The invention has the following advantages: by sending the wireless spectrum sales information to the blockchain network, each purchaser can acquire the distributable frequency band information in the wireless spectrum sales information; and verifying the first hash value received within the first deadline and the bid information received within the second deadline, and screening to obtain qualified buyers, so that the security of the bid information is ensured, and the sale of the spectrum resources can be carried out fairly and fairly. Meanwhile, the wireless spectrum sales information is automatically sent through the wireless management mechanism server, and qualified buyers are obtained through screening, so that the working efficiency is improved, manual approval and inquiry are not needed, and the waste of human resources is avoided.
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.
Fig. 1 is a flowchart of a method for screening buyers according to a first embodiment of the present invention.
Fig. 2 is a flow chart of a method for screening buyers according to a second embodiment of the present invention.
Fig. 3 is a block diagram of a screening apparatus according to a third embodiment of the present invention.
Fig. 4 is a block diagram of a system for selling spectrum resources according to a fourth embodiment of the present invention.
In the drawings:
301: wireless-spectrum-information transmitting module 302: first receiving module
303: the second receiving module 304: screening module
401: radio authority server
402: satellite earth station node server
403: operator node server
404: fixed service radio station node server
405: radio astronomical table node server
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.
A first embodiment of the present invention is directed to a method of screening buyers. The method is used for ensuring the safety of the bidding information of the buyer so that the sale of the spectrum resources can be carried out fairly and fairly.
The following describes the implementation details of the method for screening buyers in the embodiment in detail, and the following is only for the convenience of understanding the implementation details of the scheme and is not necessary for implementing the scheme.
Fig. 1 is a flowchart of a method for screening buyers in this embodiment, which can be used in a radio agency server. The method may include the following steps.
In step 101, wireless spectrum sales information is transmitted to a blockchain network.
Specifically, the wireless-spectrum sales information includes allocable frequency-band information, a first expiration time, and a second expiration time, the second expiration time being later than the first expiration time. The purchaser can obtain the wireless spectrum sales information from the blockchain network, and the wireless spectrum sales information can also include address information such as latitude and longitude ranges of physical addresses, so that the specific position of the purchaser can be conveniently determined.
It is noted that the purchaser may include at least two of a satellite earth station node server, an operator node server, a fixed service station node server, and a radio astronomical station node server.
Since each buyer wants to acquire the frequency band resource at the time, but the frequency spectrum resource is limited, the frequency band resource in the allocable frequency band information distributed by the radio management mechanism server can be acquired only in a competitive manner. It is necessary to ensure that the bid information of each buyer is not known to other buyers to ensure fairness in the sale of spectrum resources.
In step 102, a first hash value returned by the purchaser is received before the first expiration time has expired.
The first hash value is a hash value generated by the purchaser based on the first bid information, and the first bid information is information generated based on the assignable frequency band information. After the buyer acquires the wireless spectrum sales information sent by the radio management mechanism server, the buyer generates a price quoted value according to the condition of the buyer, and the price quoted value needs to be strictly kept secret, so that other buyers are prevented from acquiring the price quoted value, and the price quoted value of the buyer is further modified, and the sales fairness is influenced.
In some embodiments, the first hash value is decrypted by using a private key of the radio management authority server according to a pre-agreed algorithm to obtain a decrypted first hash value.
For example, the purchaser encrypts the first hash value using a homomorphic encryption algorithm using a public key of the radio management authority server to obtain an encrypted first hash value, and then sends the encrypted first hash value to the blockchain network, so that the radio management authority server can obtain the encrypted first hash value. When the radio management mechanism server obtains the encrypted first hash value, the private key of the radio management mechanism server is used, and the encrypted first hash value is decrypted according to a homomorphic encryption algorithm agreed with the buyer in advance, so that an original first hash value, namely the decrypted first hash value, can be obtained. The safety of the first hash value in the transmission process is guaranteed.
In step 103, second bid information transmitted by the purchaser is received before the second deadline is over.
It should be noted that the start time of the second deadline is equal to the end time of the first deadline. For example, the end time of the first deadline is 12 o 'clock 30 min 20 sec, and the start time of the second deadline is 12 o' clock 30 min 20 sec, so as to ensure the continuity of the sales time. So that the radio authority server can obtain the bid information of each buyer as soon as possible.
In some embodiments, the second offer information is decrypted by using a private key of the radio management authority server according to a pre-agreed algorithm, and the decrypted second offer information is obtained.
For example, the buyer encrypts the second bid information using a homomorphic encryption algorithm using a public key of the radio management mechanism server to obtain the encrypted second bid information, and then sends the encrypted second bid information to the blockchain network, so that the radio management mechanism server can obtain the encrypted second bid information. When the radio management mechanism server obtains the encrypted second bid information, the encrypted second bid information is decrypted by using a private key of the radio management mechanism server according to a homomorphic encryption algorithm agreed with the buyer in advance, and the original second bid information, namely the decrypted second bid information, can be obtained. The safety of the second bidding information in the transmission process is guaranteed.
In step 104, qualified buyers are screened according to the second bidding information and the first hash value.
The first hash value is generated by the buyer according to the first bid information, the first bid information can be obtained by reverse calculation through the relationship between the first hash value and the first bid information, and then the first bid information and the second bid information are compared, if the first bid information and the second bid information are the same, the buyer is qualified; otherwise, if the first bid information and the second bid information are not the same, it indicates that the buyer is an unqualified buyer, i.e. the bid information of the buyer is modified. The unqualified buyers need to be removed from the screening list to ensure the fairness of the spectrum resource sale.
In this embodiment, by sending the wireless spectrum sales information to the blockchain network, each buyer can obtain the allocable frequency band information in the wireless spectrum sales information; and verifying the first hash value received within the first deadline and the bid information received within the second deadline, and screening to obtain qualified buyers, so that the security of the bid information is ensured, and the sale of the spectrum resources can be carried out fairly and fairly. Meanwhile, the wireless spectrum sales information is automatically sent through the wireless management mechanism server, and qualified buyers are obtained through screening, so that the working efficiency is improved, manual approval and inquiry are not needed, and the waste of human resources is avoided.
In some embodiments, step 104 may also be accomplished using the following steps.
In step 1041, the private key signature of the timestamp is verified to obtain a first verification result.
The time stamp is the time information generated by the time stamp server.
In step 1042, a second hash value is calculated according to the second bid information.
In step 1043, comparing the first hash value and the second hash value to determine a second verification result;
in step 1044, qualified buyers are screened according to the first and second verification results.
In some embodiments, if it is determined that the first verification result is that the private key signature of the timestamp verifies, and the second verification result is that the first hash value equals the second hash value, then determining that the purchaser is a qualified purchaser; otherwise, the purchaser is determined to be an unqualified purchaser.
For qualified buyers, consistency between the first hash value reported before the end of the first deadline time and the second bid information reported before the end of the second deadline time is ensured, and the bid information of the buyers can be ensured to be changed randomly in the process of spectrum sales, so that the spectrum sales can be carried out fairly and fairly.
In the embodiment, a first verification result is obtained by verifying the private key signature of the timestamp, a second verification result is obtained by comparing the first hash value with the second hash value, and when the first verification result and the second verification result are verified, the buyer can be determined to be a qualified buyer, so that the bidding fairness among the buyers is ensured, and the spectrum sales can be performed fairly and fairly.
A second embodiment of the invention is directed to a method of screening buyers. The second embodiment is substantially the same as the first embodiment, and mainly differs therefrom in that: after the qualified buyer is obtained, the authorized buyer is screened and determined according to the reserve price information in the distributable frequency band information and the second bid information of the qualified buyer, so that the frequency band resource can be purchased by the authorized buyer.
Fig. 2 is a flowchart of a method for screening buyers in this embodiment, which can be used in a radio agency server. The method may include the following steps.
In step 201, wireless spectrum sales information is sent to a blockchain network.
In step 202, a first hash value returned by the purchaser is received before the first expiration time has expired.
In step 203, second bid information transmitted by the purchaser is received before the second deadline is over.
In step 204, qualified buyers are screened according to the second bid information and the first hash value.
It should be noted that steps 201 to 204 in this embodiment are the same as steps 101 to 104 in the first embodiment, and are not described herein again.
In step 205, the authorized buyers are screened and determined according to the reserve price information in the allocable frequency band information and the qualified second bid information of the buyer.
In specific implementation, a second bid value is extracted from the second bid information, the second bid value of each qualified buyer is compared with the base price information in the distributable frequency band information, the qualified buyer with the highest bid is obtained through screening, and then the use permission of the frequency band resource in the distributable frequency band information is distributed to the qualified buyer with the highest bid so as to determine the authorized buyer. In the screening process, the quotation value of each qualified buyer is kept secret, so that the safety of quotation information is ensured, and the sale of the spectrum resources can be carried out fairly and fairly. And the manual participation is not needed, the labor cost is reduced, and the working efficiency is improved.
In step 206, second bid information for the authorized buyer is written into the blockchain ledger.
Wherein the second bid information includes a timestamp, a bid value, and a blockchain identification of the authorized purchaser.
By writing the second bid information of the authorized buyer into the block chain account book, a third party can conveniently inquire the detailed information of the transaction, and the public and fair sale of the frequency spectrum resources is ensured.
In this embodiment, the radio spectrum sales information is automatically transmitted by the radio management mechanism server, and qualified buyers are screened and obtained, and after the qualified buyers are verified, the authorized buyers are screened and determined according to the reserve price information in the distributable frequency band information and the second bid information of the qualified buyers. The slow situation of manual approval of the existing radio management mechanism is changed, the working efficiency is improved, manual approval and inquiry are not needed, and the waste of human resources is avoided.
The steps of the above methods are divided for clarity, and the implementation may be combined into one step or split some steps, and the steps are divided into multiple steps, so long as the same logical relationship is included, which are all within the protection scope of the present patent; it is within the scope of the patent to add insignificant modifications to the algorithms or processes or to introduce insignificant design changes to the core design without changing the algorithms or processes.
The third embodiment of the present invention relates to a screening apparatus, and the specific implementation of the apparatus can be referred to the related description of the first embodiment, and repeated descriptions are omitted. It should be noted that, the specific implementation of the apparatus in this embodiment may also refer to the related description of the second embodiment, but is not limited to the above two examples, and other unexplained examples are also within the protection scope of the apparatus.
As shown in fig. 3, the apparatus mainly includes: the wireless spectrum information sending module 301 is configured to send wireless spectrum sales information to a blockchain network, so that a purchaser can obtain the wireless spectrum sales information, where the wireless spectrum sales information includes distributable frequency band information, a first deadline and a second deadline, and the second deadline is later than the first deadline; the first receiving module 302 is configured to receive a first hash value returned by the buyer before the first expiration time expires, where the first hash value is a hash value generated by the buyer according to first bid information, and the first bid information is information generated according to distributable frequency band information; the second receiving module 303 is configured to receive the second bid information sent by the buyer before a second deadline expires, where a starting time of the second deadline is equal to an ending time of the first deadline; the screening module 304 is configured to screen qualified buyers according to the second offer information and the first hash value.
In one example, the screening module 304 includes: the first verification submodule is used for verifying the private key signature of the timestamp to obtain a first verification result, and the timestamp is time information generated by the timestamp server; the calculation submodule is used for calculating a second hash value according to the second bidding information; the second verification submodule is used for comparing the first hash value with the second hash value and determining a second verification result; and the screening submodule is used for screening qualified buyers according to the first verification result and the second verification result.
In one example, the apparatus further comprises: the authorization module is used for screening and determining the authorized buyers according to the reserve price information in the distributable frequency band information and the qualified second bid information of the buyers; the write module is configured to write second bid information of the authorized buyer into the blockchain ledger, where the second bid information includes a timestamp, a bid value, and a blockchain identification of the authorized buyer.
It should be noted that each module referred to in this embodiment is a logical module, and in practical applications, one logical unit may be one physical unit, may be a part of one physical unit, and may be implemented by a combination of multiple physical units. In addition, in order to highlight the innovative part of the present invention, elements that are not so closely related to solving the technical problems proposed by the present invention are not introduced in the present embodiment, but this does not indicate that other elements are not present in the present embodiment.
A fourth embodiment of the present invention relates to a spectrum resource selling system, as shown in fig. 4, specifically including: a radio authority server 401, a satellite earth station node server 402, an operator node server 403, a fixed service station node server 404, and a radio astronomical station node server 405 connected by a blockchain network. Where radio authority server 401 is a seller of spectrum resources and satellite earth station node server 402, operator node server 403, fixed service station node server 404 and radio astronomical station node server 405 are all buyers who wish to be able to purchase spectrum resources. The operator node server 403 may include servers of a plurality of different operators.
First, the radio authority server 401 transmits the radio spectrum sales information signed by its private key to the blockchain network so that some purchasers who do not allocate a physical address area range of the radio band can receive the radio spectrum sales information. The wireless spectrum sales information comprises a physical address latitude and longitude range, a first deadline, a second deadline, assignable frequency band information and a corresponding unit price base price.
After a purchaser receives wireless spectrum sales information from a blockchain network, firstly, a private key signature of the wireless spectrum sales information is verified, if the verification is passed, the purchaser can prepare a price quote value of the purchaser according to allocable frequency band information and corresponding use unit price base price, after the generation of a first price quote value of the purchaser is confirmed, the purchaser can generate a first hash value according to the price quote information of the purchaser, then, the private key of the purchaser is used for signing the first hash value, and before the first deadline is over, the signed first hash value is sent to the blockchain network, so that the radio management mechanism server 401 can receive the first hash value. The purchaser may be any two of the satellite earth station node server 402, the operator node server 403, the fixed service radio station node server 404, and the radio astronomical radio station node server 405, including at least any two of the above different types of servers.
In specific implementation, the buyer can also encrypt the first hash value by using the public key of the radio management mechanism server 401 according to a pre-agreed algorithm, and send the encrypted first hash value to the block chain network, so as to ensure the confidentiality of the bid information of the buyer and simultaneously ensure the consistency verification of the mining node.
It should be noted that the bid information includes the blockchain identifier, the first bid value, and a timestamp generated by the timestamp server rather than locally by the purchaser himself, so that the timestamp requires the private key signature of the timestamp server to be attached for the calculation. Each purchasing party sends a first hash value of the purchasing party to the blockchain network, and if a certain purchasing node does not submit the first hash value, the purchasing node automatically gives up the purchasing right of the frequency spectrum resource.
After the first expiration time is over, each buyer that sent the first hash value needs to submit his/her bid information to the radio authority server 401 again before the second expiration time is over, and the second submitted bid information is credited as second bid information, which includes the buyer's blockchain identification, second bid value, and timestamp. The specific submission is to sign the second bid information using the buyer's own private key, and then send the signed second bid information to the blockchain network, so that the radio management authority server 401 can receive the second bid information.
In a specific implementation, the buyer can also encrypt the second bid information by using the public key of the radio management mechanism server 401 according to a pre-agreed algorithm, and send the encrypted second bid information to the blockchain network, so as to ensure the confidentiality of the bid information of the buyer.
It should be noted that, after the radio administrator server 401 receives the message sent by each buyer, the radio administrator server 401 first verifies the private key signature of the timestamp of each buyer to obtain a first verification result; and then, verifying the private key signature of each buyer, and obtaining the first hash value and the second bid information of the buyer after the verification is passed. Then, the radio management mechanism server 401 calculates and generates a second hash value according to the second offer information, compares the first hash value with the second hash value, and if the first hash value is equal to the second hash value, it indicates that the bid values reported by the buyer twice are the same, i.e. the first bid value is equal to the second offer value.
When the first verification result is that the private key signature of the timestamp is verified, and the first hash value is equal to the second hash value, the radio authority server 401 will mark the buyer as a qualified buyer to facilitate subsequent participation in bidding on the spectrum resource. Meanwhile, the screening method for the buyers ensures the safety of the bid information of each buyer and ensures that the sale of the frequency spectrum resources can be carried out fairly and fairly.
If the second quote value sent by the buyer before the second expiration time is changed, the radio management agency server 401 can know that the first quote value and the second quote value of the buyer are not the same by comparing the first hash value and the second hash value, and then determine that the buyer is an unqualified buyer. Thus, after the purchaser transmits the first hash value, even if the purchaser knows that the price quote is better than the purchaser, the purchaser cannot modify the price quote. The fairness of spectrum resource sale is guaranteed.
When the radio management agency server 401 obtains a qualified buyer through verification, it will screen and determine an authorized buyer according to the reserve price information in the assignable frequency band information and the second bid information of the qualified buyer. And writing the second bid information of the authorized buyer into the blockchain ledger book, namely writing the timestamp, the report value and the blockchain identification of the authorized buyer into the blockchain ledger book so as to facilitate the transaction record of the frequency spectrum resource to be traced and inquired.
In this embodiment, by sending the wireless spectrum sales information to the blockchain network, each buyer can obtain the allocable frequency band information in the wireless spectrum sales information; and verifying the first hash value received within the first deadline and the bid information received within the second deadline, and screening to obtain qualified buyers, so that the security of the bid information is ensured, and the sale of the spectrum resources can be carried out fairly and fairly. And after the qualified buyers are obtained through verification, screening and determining the authorized buyers according to the reserve price information in the distributable frequency band information and the second bid information of the qualified buyers. The slow situation of manual approval of the existing radio management mechanism is changed, the working efficiency is improved, manual approval and inquiry are not needed, and the waste of human resources is avoided. The distribution of the frequency spectrum is fairer and more reasonable by utilizing the trust mechanism and the non-tamper property of the decentralization of the block chain.
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 substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A method of screening buyers, the method comprising:
sending wireless spectrum sales information to a blockchain network so that a purchaser can obtain the wireless spectrum sales information, wherein the wireless spectrum sales information comprises allocable frequency band information, a first deadline and a second deadline, and the second deadline is later than the first deadline;
receiving a first hash value returned by the buyer before the first deadline is over, wherein the first hash value is generated by the buyer according to first bid information, and the first bid information is generated according to the distributable frequency band information;
receiving second bid information sent by the purchaser before the second deadline expires, the second deadline beginning at a time equal to the first deadline expires;
and screening to obtain qualified buyers according to the second bidding information and the first hash value.
2. The method of claim 1, wherein the step of filtering qualified buyers based on the second bid information and the first hash value comprises:
verifying a private key signature of a timestamp to obtain a first verification result, wherein the timestamp is time information generated by a timestamp server;
calculating a second hash value according to the second bidding information;
comparing the first hash value with the second hash value to determine a second verification result;
and screening to obtain qualified buyers according to the first verification result and the second verification result.
3. The method of claim 2, wherein the step of screening qualified buyers based on the first and second verification results comprises:
if the first verification result is that the private key signature of the time stamp passes the verification, and the second verification result is that the first hash value is equal to the second hash value, determining that the purchaser is a qualified purchaser;
otherwise, determining the buyer as an unqualified buyer.
4. The method of claim 1, wherein after the step of filtering qualified buyers according to the second bid information and the first hash value, further comprising:
screening and determining authorized buyers according to the reserve price information in the distributable frequency band information and the second bid information of the qualified buyers;
writing the second bid information for the authorized purchaser into a blockchain ledger, the second bid information including a timestamp, a bid value, and a blockchain identification for the authorized purchaser.
5. The method of claim 1, wherein the step of receiving second bid information sent by the buyer comprises:
and decrypting the second bidding information by adopting a private key of the radio management mechanism server according to a pre-agreed algorithm to obtain the decrypted second bidding information.
6. The method of claim 1, wherein the step of receiving the first hash value returned by the purchaser comprises:
and decrypting the first hash value by adopting a private key of the radio management mechanism server according to a predetermined algorithm to obtain a decrypted first hash value.
7. The method of any of claims 1 to 6, wherein the purchaser comprises at least two of a satellite earth station node server, an operator node server, a fixed service station node server, and a radio astronomical station node server.
8. A screening apparatus, comprising:
the wireless spectrum information sending module is used for sending wireless spectrum sales information to a blockchain network so that a purchaser can obtain the wireless spectrum sales information, wherein the wireless spectrum sales information comprises allocable frequency band information, a first deadline time and a second deadline time, and the second deadline time is later than the first deadline time;
a first receiving module, configured to receive a first hash value returned by the buyer before the first deadline expires, where the first hash value is a hash value generated by the buyer according to first bid information, and the first bid information is information generated according to the distributable frequency band information;
a second receiving module, configured to receive second bid information sent by the buyer before a second deadline expires, where a start time of the second deadline is equal to an end time of the first deadline;
and the screening module is used for screening and obtaining qualified buyers according to the second bidding information and the first hash value.
9. The apparatus of claim 8, wherein the screening module comprises:
the first verification submodule is used for verifying the private key signature of the timestamp to obtain a first verification result, and the timestamp is time information generated by the timestamp server;
the calculation submodule is used for calculating a second hash value according to the second bidding information;
the second verification submodule is used for comparing the first hash value with the second hash value and determining a second verification result;
and the screening submodule is used for screening qualified buyers according to the first verification result and the second verification result.
10. The apparatus of claim 8, further comprising:
the authorization module is used for screening and determining the authorized buyers according to the reserve price information in the distributable frequency band information and the second bid information of the qualified buyers;
a write module to write the second bid information of the authorized purchaser into a blockchain ledger, the second bid information including the authorized timestamp, a bid value, and a blockchain identification.
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