KR20040072572A - An open bidding system in an electronic commercial transaction and competition separatedly providing comparable and non-comparable bid informations and confirmed evaluations and make decision by each secret keys - Google Patents

Abstract

PURPOSE: An electronic bidding method for guaranteeing objectivity by offering the bidding or estimation information separated into an absolute and a relative comparison part, and opening an evaluating result and a bidding price is provided to prevent the contents of the estimation or a bidding document from being exposed to other person by encrypting the related information. CONSTITUTION: A bidder encrypts the absolute comparison part by using a provided biding key and stores it in a database. The bidder encrypts the relative comparison part by using a price key set by the bidder and stores it in the database(107). An arranging server encrypts an ID part of the bidder by using an intrinsic key and assigns a temporary alias to the bidder(108). A buyer requests evaluation to an evaluator by decrypting the absolute comparison part. An evaluation result encrypted by an evaluation key of the buyer is stored in the database. The bidder provides the price key to the database. The buyer provides the evaluation key to the database. The evaluation result for the absolute and the relative comparison part is opened with the alias by using the price key and the evaluation key(119).

Description

Electronic bidding transaction method that separates the absolute evaluation part and the comparative evaluation part from the competition for a trading contract and provides them as bid or quotation information and discloses the evaluation result and the bidding amount as their private keys to guarantee objectivity {An open bidding system in an electronic commercial transaction and competition separatedly providing comparable and non-comparable bid informations and confirmed evaluations and make decision by each secret keys}

The purchase and sale of goods is a basic and important act in everyday life. It is the most satisfactory transaction and the basic goal that is pursued in all commerce that the deal is concluded by finding the right conditions between the supplier and the consumer through good faith competition. If there is too much competition, or if one party uses the superior position unfairly, damage is caused by imbalance. Therefore, it is important to ensure that either side does not cause an unfair loss.

In traditional methods of direct trading between suppliers and consumers, such as commerce in traditional markets, consumers look at different terms of sale and choose the most advantageous. In business-to-business transactions and e-commerce over the Internet, consumers still make decisions after reviewing the quality and conditions of their suppliers. Since most buyers have a choice, the seller or supplier (hereinafter referred to as the seller) has to wait for the consumer's decision to present the information and conditions necessary for the sale, such as the features, quality, experience and price of the product or service. In some cases, on the contrary, a number of buyers provide the supplier with the information and conditions necessary for purchase, and at the supplier's discretion, the deal is closed. However, the process of reviewing and deciding on multiple proposals goes through the same process.

The more open and generic the offer information (hereinafter referred to as the bidding information), such as the characteristics, specifications, terms and conditions, quality, performance, performance, quantity and amount of each product or service offered by multiple sellers to the buyer, and the evaluation criteria The more open this is, the more fair the deal is. However, this information contains technical and economic details that should not be disclosed to competitors.

In the case where the bidding information is transmitted by records or electronic documents, it may be disclosed to an unspecified majority regardless of whether the transaction is completed or not. Therefore, technical or economically valuable information, especially amounts or unique technical items, Knowing to competitors is a big burden on the seller, so it is a matter that must be protected in the bidding process. For this reason, in most commerce, the bidding information provided in documents or recording media is treated as a very important confidentiality element, and the bidding information such as quotations and bids is protected and treated as confidential.

In the purchasing activities of public institutions, in particular, the public bidding system is adopted in order to guarantee the legitimacy of handling and to prevent malicious manipulation, but the bidding cannot be guaranteed without revealing the seller's bidding information. Disclosure of information is often inevitable. The handling of such bidding information in electronic transactions, an increasingly interpersonal or corporate transaction, driven by the activation of the Internet, must be more sensitive and complex in security and transparency.

As an example of the state-of-the-art technique of this technology, the public bidding system through e-commerce used by the Public Procurement Service, a national agency, can be summarized as follows. The sales prospector registers as a company in advance and installs a certificate to send and receive bid information, prepares and announces purchase specifications in the purchasing department, and undergoes amendment procedures in response to comments on the rationality of the contents from the relevant companies. Is announced as a bid notice (standard notice). Registered sales companies, as required, go through the preliminary deliberation, fill in the necessary items in a certain form of bid, send the bids, and use the encryption key generated by the separately authorized procedure for the process and stability of the open bill. After the bid documents are opened, the bidders are determined according to internal processing guidelines such as selecting bidders close to the scheduled prices. In each process, various procedures are prepared for security and legitimacy, but when the ticket is open, the bidding information can be viewed by all the participating companies. Remains. In addition, since the integrity of the bidding information is built entirely on the system of the computer, such as encryption keys and access restrictions, it cannot be immediately recognized in case of computer error, mechanical damage, or malicious manipulation or damage. The problem still exists.

Another example of a technology that seeks to improve transparency and efficiency is procurement, as in the patented technology “Procurement Management Method in which Costing and Bidding Processes are Integrated through the Internet” (Registered June 2004 10-0439565). In the process of bidding in the institution, the conventional cost accounting business, which was done separately in different formats according to demand, is provided in a certain file standard so that it can be processed as standardized integrated information. After selecting the successful bidder and verifying the contract details and notifying the successful bidder, the technology that improves the efficiency through the integration of cost calculation and the submitted data is viewed in real time through the internet network, and the improved transparency and efficiency are introduced. . However, the problem of exposing the information to the competitors or the general public in the bidding action to be protected by the data submitted from these technologies to the various parties is not disappeared. As such, the inevitable problem of the need for disclosure of data to secure transparency is a problem that most transactions through bidding or open competition still have.

In recent years, the comparative evaluation is relatively simple, such as books and general consumer goods, and the product whose price is the criterion is a reverse auctioning type of electronic transaction. Unlike general auction method that gives a superior position to a supplier, this has the advantage of maximizing the superior position of the buyer and avoiding unnecessary exposure of sales information. However, there is a problem that it is limited in application and the superior position of the buyer is Because of its burdensome function, it is unreasonable in view of the trading principle that both parties should be equal.

On the other hand, another problem in electronic commerce through an open network such as the Internet is that it is expected to be harmed by so-called hackers, in which the stored or transmitted information is badly disturbed and copied, and also the insider's intentional misuse. For this reason, in the case of bidding, authentication and encryption technology for security are important, and for this purpose, a number of methods for encryption and communication security using an authentication server have been invented and used. However, when a successful bidder is determined after information has been reached by the buyer. Clear assurance of transparency and safety is virtually difficult in the procedures up to now, so the information sellers are forced to rely on the principle of good faith, which they promise in their own terms.

Therefore, in the present invention, a number of sellers who submit bidding information such as quotations or bids in bidding or open competition through electronic transaction methods in a network communication network such as the Internet, in particular, may have doubts about the buyer. Encrypted to ensure transparency and prevent unnecessary parties from accessing or handling the data while preventing the need for sale appearing in quotes or bids provided by them from being unnecessarily disclosed to others, especially competitors. To be treated as compiled information.

In addition, in the present invention, the bid information submitted by the seller himself is prepared to check and confirm whether the bid information is handled transparently and accurately until the final evaluation procedure, and at the same time, how the bid information of all participants is evaluated in each item in the final decision. It is to make sure that each one is open.

In addition, according to the present invention, the bid information submitted by the seller is provided to the professional institution, department or expert (hereinafter referred to as an evaluator) according to each corresponding item to divide and evaluate only the corresponding bid information, and when such evaluation is completed, it is publicly synthesized. After the presentation, final decisions are made in the designated procedures and methods to ensure the professionalism and fairness of the assessment.

In addition, in the present invention, when there is no appropriate bidder meeting the buyer's requirements, the detailed information of the bidder is not disclosed, thereby preventing the seller's business policy and price information from being disclosed unnecessarily.

1: Bidding and Bidding Process Schematic in the Electronic Bidding Transaction Method

2: Example of bid notice and general guidance

3: Disclosure of evaluation details of absolute evaluation part and relative evaluation part of bid information

4: Disclosure of evaluation results of absolute evaluation part and relative evaluation part of bid information

5: Example of comprehensive counting of bidding results and selection of successful bidders

6: Detailed evaluation process configuration diagram in the absolute evaluation part

7: Logical flow diagram of bid announcement and progress of electronic bidding transaction method

8: Logical flow diagram of prequalification preliminary screening process

9: Logic flow chart of bidding information evaluation progress in electronic bidding transaction method

Figure 10: Process flow diagram for final decision

11 is a block diagram of an electronic bidding transaction system

In order to achieve this object and to solve the conventional problems, in the present invention, a purchaser (10 in FIG. 11) and a seller (20 in FIG. 11) having an information processing terminal are arranged in a network communication network (50 in FIG. 11) such as the Internet. (30 in FIG. 11) and the bid information evaluators (40 in FIG. 11) are connected to the Internet network or the communication network (60 in FIG. 11) of the buyer's company to send electronic documents to each other. Prepared to receive, and the database data of the intermediary server (30 in Fig. 11) is based on preparing these terminals and the intermediary server to be connected to the network communication network so that the information is stored and limited access as necessary have. According to the size and frequency of the electronic bidding transaction method, the purchaser's terminal (10 in FIG. 11) is prepared as a server having a separate database, and the bidding information evaluators are also prepared to transmit and receive information through the buyer's server. Would be very desirable.

In the present technology, in a transactional act of signing a sales contract (hereinafter referred to as a successful bid) between a buyer and a seller through an open competitive transaction method (hereinafter referred to as an electronic bidding transaction) such as public bidding or limited bidding, which is made of electronic documents and electronic information. In the process of publicly notifying, proceeding and processing Buyer's requirements (hereinafter referred to as Bid Content) for a particular matter,

Preparing detailed evaluation items for determining successful bidders in the bidding contents;

In the details of the bidding content, the information provided by the sales prospective person (hereinafter referred to as the bidder or the seller) can be judged only by the absolute criteria determined in advance, such as quantity, material, or product size. Part that can be evaluated according to circumstances and circumstances between competitors, such as price, unit price, or production date, where superiority is evaluated and graded compared to other competitors ( After that, it is called a relative evaluation part) to determine the requirements of the bidding content;

Preparing to be identified in the transmission and reception of information with a seller (bidder) participating in the bid, using the bidding business number as the bid secret number in each electronic bidding transaction method;

Storing the information in the electronic bidding transaction method including the bidding contents in the bidding contents database of the mediation server (31 in FIG. 11) and advertising the same;

Storing the bidding information together with the bidder's name and alias in the bidding information database (32 in FIG. 11) of the mediation server;

Providing the stored bid information as information to the evaluation department and related parties;

Publishing an evaluation result of the evaluation information on the completed bid;

The bidder and the buyer presenting each private private key, and the evaluation result is summed as a score so that the superiority is publicly determined and the price is disclosed;

An intermediate processing server includes an evaluation processing module (33 in FIG. 11) for determining and processing an evaluation result and a successful bidding processing module (34 in FIG. 11) for processing a procedure for determining a successful bidder and finally publishing the bidder.

The data transfer protocol or processing technology between the intermediary server in the electronic bidding transaction method and the information processing terminal such as the personal computer of the buyer, the bidder and the evaluator connected to the communication network such as the Internet is based on the system regardless of the specific format or general encryption protocol. There is no particular restriction as long as the cryptographic data can be decrypted according to the specified guidelines. In addition, the present invention does not specifically limit whether to pass through a third authentication server for encryption or use a temporarily generated secret key and encryption technique in the buyer or intermediary server. The technique in the present invention is not particularly limited in its format since the bid information provided by the seller only needs a function of being encrypted and decrypted as a secret key.

Hereinafter, the configuration in the present invention will be described in detail with the accompanying drawings showing as an embodiment.

In Figure 1, the buyer transmits the intention to make a transaction in the electronic bidding transaction method to the mediation server to register as a bid content (100), while the broker introduces this so that the bidders can know the public purchase request sent from the buyer In order to safely determine the documents or information necessary for bidding (101), the corresponding information generated by the bid secret key (102) is provided to be stored in the bidding contents database.

If the seller applies to participate in the bidding (103), if the buyer has previously restricted the bidding qualifications, the seller will request that the bidding qualification be reviewed, and the request is passed to the buyer through the server (104). The result is notified to the bid applicants and the bid is prepared (105). After a certain period of time, the mediation server notifies the bid deadline of the bidder who has passed the preliminary qualification examination. The buyer's requests, such as the submission period, the transaction item, are provided 107 to send a detailed bid document. In particular, the bidding guide is prepared to separately prepare the absolute evaluation part and the relative evaluation part which are adopted as the dual finalizer evaluation method in the present invention, and submit them as bid information.

Generally, the generic product or service specifications, such as the name of the material, the size of the connection, the size of the space occupied, the warranty period, and so on, can be scored against an absolute reference value. The information that is encrypted and transmitted, and the superiority is determined according to the situation of other competitors, such as the price or the total amount of free parts, is provided to the mediation server with double encrypted bidding information of the bidding secret key and the price secret key independently determined by the bidder. 107 is prepared.

The intermediary server encrypts information such as name, address, contact number, and internet address that can identify the seller's identity after the deadline, and prepares it so that it is not disclosed until the final winner is decided. Generates a random alias to replace the seller's identity, notifies the corresponding bidder and uses it in progress (108).

Prepare a document containing the bidder's alias and the absolute evaluation part as the respective bidding document for evaluation to the buyer or the evaluator designated by the buyer (109), while the relative evaluation section until the bidder's price secret key is presented; It is stored in the mediation server 110 and is provided in an encrypted state.

Evaluation items that determine the winners from the buyer and the evaluation criteria encrypted with a separate evaluation secret key are transmitted (111) and are prepared to be kept in the intermediary server, and these examination criteria are prepared to be decrypted at the same time when the examination results are disclosed (115). (112).

Once the screening criteria are established and stored in the bidding database in the mediation server, the bidding information is delivered to the buyer and prepared for proper evaluation from the evaluators (113), while the encrypted screening criteria are publicly decrypted afterwards to be verified for fairness. Is provided.

In the present invention, it is highly desirable that the information stored in the intermediary server be prepared to be downloaded by the bidder or the related person in each state encrypted or decrypted.

When the evaluation of the bidding information is completed, the evaluation result that can be generally disclosed about the absolute evaluation part and the evaluation result indicating the superiority are encrypted with the evaluation secret key and transmitted to the intermediary server (115), and the bidder confirms the evaluation result. (117) If necessary, it is provided to download and store the corresponding information in its own computer (117).

When the evaluation is completed, the brokerage server is prepared to be provided with the evaluation secret key for the evaluation result from the buyer so that the evaluation result can be summed up at the designated date and time, and at the same time, the price secret key is provided from each bidder (118). As the disclosure of, the total ratings of the respective bidders are automatically summed, and then the details are provided to be separated by an alias (119).

In such a final release, it may be highly desirable to reveal the identity of the finalist in some cases, and if necessary, the bidder's price secret and the buyer's audit result and evaluation secret key are provided to each of the parties and stored encrypted on the server. The information is decrypted and provided to verify the integrity of the final published information (120).

In the preferred embodiment of the present invention, the bid secret key for security in general data transmission in the electronic bidding transaction method is based on the public key provided through the server and the secret related to the evaluation of each item in the bid information. It is highly desirable that the key be based on an individual secret key technique.

The present invention specifically excludes or utilizes multiple digital signature technologies for limiting or verifying the access of the parties in the generation of such a secret key that stores and discloses or discloses the information, and encryption or decryption techniques using the same. Is not limited to

As a preferred example of the present invention of Figure 2, the announcement of the bid content transmitted from the buyer to the mediation server in the bid number 201 that can be used as a bid secret key and the necessary price condition 202 or purchase range 203, etc. In addition to the guide, the purchase list 210 is presented briefly, each bidding item (211) and the basic specifications (212) for the bidders to determine the possible, and the details for the bidder (213) to download Information 214 is provided for the seller to determine whether to bid.

In such bidding contents, the conditions 220 affecting sensitive factors such as price are disclosed for accurate judgment, and details such as payment date 221 or contract date and time 222 are disclosed so that disputes between the bidders do not arise. Would be very desirable.

3, the absolute evaluation part 300 and the relative evaluation part 310 which are transmitted as bid information are separated from each other and are treated as separate encryption information. By using the alias 301 assigned to protect the public, the bid status 302 of each seller objectively verified, and the evaluation value 305 of the absolute evaluation item 304, which has already been determined, is disclosed to each bidder. For example, product-specific importance, grade-specific factors and weights 303, which can be differentiated to a specific seller, are provided encrypted with an evaluation secret key to be announced at the time of final winner selection.

Similarly, in the relative evaluation section, except for the information (313) that can be disclosed such as the free inspection period, important information such as the price of each bidder (312) or the corresponding amount (315) of the free support product is evaluated. In the process of determining the final bidder after completion, the seller discloses his / her price secret key so that the value is implemented, and the importance of price (311) and free support as opposed to technical specifications, which are the criteria for comprehensive judgment. The evaluation weight 314 value is provided to be simultaneously disclosed as the buyer's evaluation secret key.

As a preferred example of the present invention of FIG. 4, the final successful bidder is based on the previously disclosed evaluation score 305 in each item according to the importance of the product determined by the buyer by the evaluation secret key of the examination result 400 being disclosed. For example, a bidder with a nickname of 'swallow' reflecting the importance of each item and the weight of each item meets the standard value in the material item of item 1, and scores 99 out of 100. Let the value be determined as follows:

Total Valuation of Item 1 = Specification Item [150 * (99/100)] +

Material Item [300 * (99/100)] + Performance Item [100 * (99/100)] +

Certificate Item [100 * (99/100)] + Part Number Item [200 * (99/100)]

= 841.5

In this case, the total value evaluated in item 1 of the absolute evaluation part is 841.2 compared to a perfect score of 850. Even if the bidder received a high rating on item 1, it would be detrimental to the final decision if it received a relatively low rating (403) on item 2, which is more important than other sellers. Therefore, the criterion for the evaluation weight 404 is provided so that the buyer sums the evaluation secret key when determining the final successful bidder. At the same time as the buyer announces the result of the final review evaluation, the bidders disclose the price secret key held by the bidders, thereby revealing each amount 413 and the corresponding free support amount 414 of the encrypted relative evaluation portion 410. The ratio of the buyer's weight to the description, for example, the total value of each item (404) (2350 = 850 + 900 + 600) and the importance of the price (413), is the lowest among the lowest bidders (3000 points). By evaluating, the deviation from the minimum amount can be determined by subtracting the perfect value, as shown in the brief example below.

Deviation = 580-550 = 30

Rating = perfect score (3000)-deviation = 2970

The evaluation sum of the absolute reference portion is automatically summed (411) and provided to determine the final winner.

As a preferred example of the present invention of FIG. 5, when the final successful bidder is announced 500, the mediator server generates an alias 502 and decrypts the identity of the final successful bidder who encrypted the identity of the seller with a unique secret key (501). And the results of the absolute evaluation part 501 and the results of the relative evaluation part are summed up (503, 504). Whether or not to disclose all the information of the bidder to the buyer should be provided in the bid notice or with the seller's consent, if the seller's bid information is very confidential, if the seller's bid stored in the intermediary server It would also be highly desirable to provide information to be deleted at the same time as the business closure.

As a preferred example of the present invention of FIG. 6, the purchaser may use an absolute evaluation part, for example, an environment (e.g., a technical matter 600) including technical and professional items, in order to obtain an objective and professional examination and evaluation of the bidding information. 601) is provided to consult with an external professional body or a field department 602 or a specific research institute who knows the performance of the material 603 to request an evaluation of the corresponding items 604 and 605. In addition, in the relative evaluation portion 610, for example, the lease cost of the necessary equipment for the incidental cost 611 of the transport installation is provided to the external equipment company to evaluate (612). It may be desirable to include only minimal information, such as the bidder's alias and the date and time of the bidding, in the course of such work.

As a preferred embodiment of the present invention of Figure 7, the buyer prepares the electronic bidding transaction method (700), and prepares to provide through the mediation server as electronic document data and information necessary for the bidding information (701) In addition, the contents are transmitted to the mediation server together with the bidding guide and the bid secret key i_code value for secure transmission of information (702), and the mediation server announces the bidding and prepares the corresponding seller to respond (703). If the seller who is informed of the bidding through the network communication network provides the necessary information to participate in the bidding (704), it is subjected to preliminary screening by the buyer depending on whether the limited bidding (705) (706), the qualified sales The general information necessary for bidding is transmitted to the target person (707). Each seller prepares the electronic document for bidding according to the form and format set out in the bidding contents, prepares the statement sp for their absolute evaluation part and sends the encrypted information bd with the encrypted Q {i_code, sp}. Create and send to mediation server (708). At the same time, the items for the relative evaluation part, which are evaluated as comparisons with the competitors, such as price, are written in the form of electronic document pr, and the price secret key p_code is used again so that it can be disclosed with the private secret key that it sets. The information am encrypted with the cipher Q {i-code, pr, p_code} is generated and transmitted to the intermediate server (709). When bidding information is received from all bidders or when the bidding deadline ends, the mediation server encrypts the information indicating the identity such as the bidder's name and address contact number as the unique secret key c_code F (n) = Na {name , c_code}, store it in the bidding information database, create a temporary alias of the bidder using a random number function, store it in the database of the intermediate server (710), and prepare the buyer or bidder to receive this encrypted information as needed. do. The intermediary server notifies the corresponding bidder with the information that is temporarily stored in the designated alias and notifies the bid evaluation progress (711), and waits for the evaluation to be completed (712).

As a preferred embodiment of the present invention of FIG. 8, when a buyer specifically determines a schedule qualification to participate in a bid (800) and undergoes a preliminary screening 706 of FIG. 7, the participation request information 801 of a bid participation applicant is It is delivered to the buyer through an intermediary server and is provided to go through three companies according to a preliminary preliminary qualification criteria 802. The preliminary screening screening for eligibility determines whether a prerequisite is recognized as important depending on the bidding content, such as whether the performance 802 is above a certain level, or the environment 803, management 804 or performance 805. It would be highly desirable to request the same department or agency and determine the evaluation of each of these areas by setting a certain limit (806). For the fair and transparent electronic bidding transaction method, the electronic bidding transaction process is provided through the eligibility screening process (808) (810). It would be very desirable to inform.

In a preferred embodiment of the present invention of FIG. 9, the mediation server provides an absolute evaluation part bd separated by an encrypted name F (n) and an alias of each bidder from the bidding information to be delivered to the evaluator through the buyer (901). In operation 902, the buyer decrypts the i-code encrypted bd to obtain the seller's bid information sp and provides the information to the internal evaluation department or the external evaluation agency to calculate each evaluation value w according to the item (902). . The evaluator evaluates by percentage ratio of the reference value according to items and items by professional judgment such as, for example, performance (902), environment (903), energy (904), performance (905). Create a scorecard g (n) with a value (w) (907), and also determine the importance of the relative valuation part of the overall item decision based on buyers and opinions, such as, for example, price share r and service share s. Pw and Sw encrypted as t-code are generated (908), and are provided to the mediation server and stored in the bidding contents database.

F (n), q (n), Pw, Sw and the evaluation value (w) stored in the intermediary server are each evaluated by the bidder on his computer for later verification. When the bidder is provided for download, the bidder transmits his price secret key p_code value to the server to determine the final winning bidder and discloses it (912) so that the price information of the relative evaluation part that has been encrypted is decrypted. After checking whether the p_code value is provided to the server (913), the bidding information of the bidder whose price is not disclosed is excluded from the evaluation target (915). As disclosed (914), the evaluation criteria of the encrypted relative evaluation portion are decrypted and provided so that all the bidding information is disclosed according to the alias (917). The p-codes and ciphers of each bidder, if necessary, are provided to all relevant parties and are prepared to execute and verify their own decryptions using the information they have downloaded and archived (916).

However, in another embodiment, when the purchaser designates a specific evaluation value as the minimum limit value due to technical reasons or budgetary problems, the absolute and relative evaluation values are immediately obtained even if the summation is completed (907,908). It is provided to go through the procedure of evaluating whether the bidding 1007 previously entered into the intermediary server described in the following embodiment without disclosure, and automatically checks the bidding according to the tolerance range with the reference value, It would be highly desirable to be prepared to disclose in some cases.

As a preferred embodiment of the present invention of Figure 10, the sum value of the absolute evaluation portion and the relative evaluation portion undergoes the process of determining the final successful bidder in the server (1000), as a criterion for determining the final successful bidder, the selection of a typical top rated In accordance with the various modification criteria according to the anti-fructification or industrial characteristics (1001), each method is pre-determined as a function (1002) and provided to be compared in the successful bid processing module of the mediation server, the successful bid processing module of the mediation server It would be desirable to use the appropriate functional formula specified by the buyer to determine if there is a qualified person and to prepare to be determined. For example, in the case of selecting a general and simple lowest price (1003), that is, the highest rating (503) in FIG. 5, as well as in the relative evaluation part such as a reference example method that prevents excessive competition and preserves the industry's appropriate profits. A method of imposing a high score differently (1004), a method of referencing an average difference between the average value of other bidders and a limit value set separately, or a certain score is rewarded by linking the winning bid amount and the average bid amount according to bidding participation. The method 1006 is provided so that various cases can be determined and utilized. In this determination method, the bidder is provided to determine if the bidder is not eligible or the bidder's requirements are insufficient (1007). If there is no claim (1009) and a separate consultation or explanation is required, then a private discussion or a public discussion using an alias (1012, 1013) will result in a final decision until all sellers participating in the auction have been accepted (1014). It is provided to withhold.

If the final bidder is decided, the result of the successful bid will be disclosed and the broker's name will be decoded and disclosed to the company name and specification F (n) corresponding to the final bidder's alias according to the announcement format determined by the buyer (1010). If it is agreed that the bidder's c_code is provided (1011) and all bidding information is disclosed (1015), the entire c_code is provided so that the contents of all bidding methods are disclosed.

In another embodiment, in the process of confirming whether the buyer is expected 1007 in FIG. 10, the buyer should apply a specific limit value to the absolute evaluation part or the relative evaluation part, such as technical or budgetary problems. At this time, if the corresponding evaluation value of sellers participating in the bid is out of the allowable error range, the mediation server automatically evaluates it through the evaluation processing module (33 in FIG. 11) and the successful bid processing module (34 in FIG. 11). It would be highly desirable to calculate and notify that the bidding was automatically made without revealing the buyer's evaluation details or the seller's bidding information, and allow both parties to re-adjust the range of the tolerance.

Such a method provides appropriate guidance for accessing the conditions between the two parties based on the evaluation value of the absolute evaluation part and the relative evaluation part of the electronic bidding transaction method without revealing specific bidding information or the buyer's evaluation criteria. The buyer's requirement and the bidder's selling condition of the highest rated bid are diverged by 20% of the price condition and 10% of the delivery date. ' ,

Thus, without disclosing both or all of the intentions of both parties in detail, it is possible to adjust the conditions to the appropriate conditions using an intermediary server to reach an agreement in which the operator operating the technology of the present invention can be easily deployed in various forms. Since it is not limited to the embodiments described in the present invention.

11, the buyer (10 of FIG. 11) and the seller (20 of FIG. 11) are connected to an intermediary server (30 of FIG. 11) through a network communication network such as the Internet to provide an electronic bidding transaction method. Send information. It is prepared to receive and the bidding details of the buyer and the bidding information of the seller are stored in the bidding contents database (31 of FIG. 11) and the bidding information database (32 of FIG. 11) of the intermediary server, respectively. The relative evaluation part is separated and provided to proceed with the evaluation process of the specialized department connected to the external evaluator (40 in FIG. 11) and the Internet or to the buyer's internal intranet (60 in FIG. 11).

This evaluation is performed through the criteria and determination procedure described above through the evaluation processing module (33 of FIG. 11) of the intermediary server, and as in the above description, the selection of the successful bidder is provided to be determined through the successful bid processing module (34 of FIG. 11). All the evaluation related information is provided in the bidding contents database (31 in FIG. 11) and the final successful bidder related information is stored in the bidding information database (32 in FIG. 11) and transmitted to the related parties.

In the above description, the buyer uses only the price secret key of the bidder in preparation for receiving more accurate products or services from the bidder by disclosing the details of the absolute evaluation and the weight of each item in advance without using the evaluation secret key. According to the circumstances it will be another preferred embodiment. For example, if the bidding information does not contain any special contents to be protected or if the bidder needs to be disclosed at the buyer's discretion, more active bidding is made. Using only the price secret key of another would be another preferred embodiment.

Most of the transactions are decided by the buyer after reviewing the seller's proposal. However, in some cases, a large number of buyers provide the supplier with the information and conditions necessary for purchase, and the decision is made by the supplier. However, since in many cases in the real transaction, the buyer reviews the proposals of various sellers and makes a selection, the above description of the present invention is based on this, but the contents of the present technology are also the same when the seller reviews the proposals of multiple buyers and makes a decision. It can be said that it can be applied very clearly.

According to the present invention, since the sales prospective participating in the bidding in the electronic bidding transaction method can be protected from being disclosed when his or her economic or technical secret provided through the bidding information is not successful, another of the corresponding product or service It enables a variety of policy decisions in competition and economic benefits.

Another effect according to the present invention is that the electronic bidding transaction method can mutually verify the transparency and integrity of the competitor's bidding information, so that the bidding information submitted earlier may be maliciously processed or utilized to adversely affect the evaluation. To be excluded.

Another effect according to the present invention is that when complex and specialized knowledge is required to evaluate the contents of a product or service to be purchased in an electronic bidding transaction method, detailed evaluation can be performed without disclosing the detailed information of the buyer or bidder. There is an effect of securing expertise, objectivity and transparency in the selection of successful bidders.

Another effect according to the present invention is that when trying to purchase or supply a product or service through the electronic bidding transaction method, the technical or economic requirements between the buyer and the seller while eliminating the burden that one side must first present the purchase conditions or sales conditions By controlling the conditions and reaching agreement between the parties without making specific disclosures, it is possible to prevent favorable superior tyranny in the sale and achieve a favorable trade that benefits everyone.

Another effect according to the present invention is the evaluation process and contents of the bidding information carried out by the buyer in the electronic bidding transaction method, and the bidding information provided by the seller is stored as a private key and stored and processed as mutual secret key Finally, the public disclosure has the effect of securing transparency, integrity and stability of the electronic bidding transaction method.

Claims (5)

When a buyer wants to decide a contractor to purchase a product or service from a large number of sellers through an open competition using a network communication network such as the Internet or an electronic bidding transaction method such as bidding, the buyer's terminal such as a personal computer and the seller's terminal and In an intermediary server connected through a network communication network, A bidding content database of an intermediary server, which stores purchase conditions from a buyer as bid contents, separates the absolute evaluation portion and the relative evaluation portion, and stores the data together with guide information necessary for bidding; A bidding information database of a mediation server in which a bidding seller, which stores bidding information, is divided into an absolute evaluation part, a relative evaluation part, and a congestion part indicating its identity; Using the bid secret key provided by the bidder who is a sales prospector, the absolute evaluation part is encrypted and stored in the absolute evaluation part of the bidding information database of the mediation server, and the relative evaluation part is re-encrypted using the price secret key set by the bidder. Transmitting to the mediation server and storing in the relative evaluation portion of the bidding information database; Intermediary server encrypts the identity part including the identification information of the bidder using a unique secret key and gives the bidder a temporary alias as a random number function; Requesting the evaluator to evaluate the items for each item by decoding the absolute evaluation part stored in the mediation server; Storing the evaluation results encrypted by the evaluator and the evaluation secret key determined by the purchaser in a database of the intermediary server; Providing, by the bidder, the price secret key to a database of the intermediary server; The purchaser provides the evaluation secret key to the database of the intermediary server; Using the bidder's price secret key and the buyer's evaluation secret key to disclose the evaluation contents and the evaluation results of the absolute evaluation part and the relative evaluation part; Determining, by the purchaser, the final successful bidder in the evaluation result and the comprehensive evaluation according to the procedures defined in the evaluation processing module and the successful bidding processing module of the mediation server; A broker's private key, which discloses the identity of the final winning bidder using a unique secret key and notifies the buyer and the bidder.As a private key, the electronic bidding transaction guarantees objectivity by disclosing the evaluation result and the bidding amount. system. In the above 1, As an evaluation item for the purchaser to decide the winner, the relative evaluation part that is compared and evaluated for superiority according to the situation and condition of the bidders is separated from the absolute evaluation part that can be determined and graded according to a predetermined absolute standard. Preparing the bidding content so that it can be classified as the bidding information. The bidder shall prepare the bidding information for the absolute evaluation part and the bidding information for the relative evaluation part separately, prepare the absolute evaluation part for the buyer to decrypt as the bid secret key, and the relative evaluation part as the price secret key separately determined by the bidder. Encrypting it, storing it in a database on the intermediary server, It is a secret key that encrypts the information on the part of the identity indicating the bidder's identity in an independent manner using the unique secret key of the intermediary server and stores it separately. Electronic bidding transaction method. In the above 2, The mediation server encrypts the bidding secret price and the price secret key by each bidder to allow the purchaser and the bidder to download it to their terminal through the communication network; Allowing the buyer and the bidder to download the price secret key provided and stored on the intermediary server from the bidder to their terminal through the communication network; Allowing the bidder to receive the decryption function from the buyer to his terminal through the communication network so that the relative evaluation part of all bidders can be decrypted through the intermediary server; An electronic bidding transaction method that guarantees objectivity by disclosing the evaluation result and the bidding amount by decrypting a relative evaluation part that is obtained by using a decoding function, a bid secret key, and a price secret key. In the above 1, According to the characteristics of the product or service that the buyer wants to purchase in the absolute and relative evaluation parts, the buyer sets a certain value for each item based on the importance and value of each item and distributes it according to each item constituting the item. Encrypting the perfect value of each item and each allocation value as an evaluation secret key and storing it as information for confirming the audit results; In addition, to obtain an evaluation result as a score through a separate procedure from the evaluator to the item according to each item, according to the evaluation criteria set to 100 if fully satisfied, When the evaluation results of all items are obtained, each of the items is characterized by decrypting the audit result encrypted with the evaluation secret key, multiplying each distribution value by the percentage of the corresponding evaluation result, and calculating the actual audit result value. Electronic bidding transaction method that guarantees objectivity by disclosing the evaluation result and bidding amount as a secret key. In the above 1 and 3, Absolute difference of the difference between the specific value and the closest bid value if there is no bidder that meets a specific value in the absolute evaluation part or a predetermined value in the relative evaluation part, or a specific value in the total evaluation result. Calculating the value as a percentage based on that particular value to disclose the value of the bid evaluation, If a bid is bidding, the bidding information, the evaluation result, and the evaluation result are not disclosed and the respective secret keys are not allowed to be transmitted so that the bidder's price secret key and the buyer's evaluation secret key are not known to each other. Electronic bidding transaction that guarantees objectivity by disclosing evaluation results and bid amounts.