網路型開標系統的設計與實作

Abstract

本研究是以多項式的祕密分享演算法來設計與實作網路雞蛋交易開標系統。基本上開標的過程為從不同的祕密分享伺服器取得資料，並且在其中找出得標者。在設計的階段開標的流程可用IDEF0技術來描述。然後再利用最小覆蓋理論以及IDEF1X技術設計其祕密分享資料庫。在實作階段裡，設計許多軟體模組來完成尋找得標者的四個步驟。第一步驟是由混合的祕密分享資料反算出真正的交易記錄。第二步驟則是從交易資料產生一個供需曲線的交易資料表。第三步驟則為訂定參數以便尋找供需均衡點。第四步驟為產生得標者的圖形以及報表輸出。這個實驗性的雞蛋交易開標系統，已在各種不同的環境下充分測試。其結果也顯示出此原型系統的可行性

A bid-opening system for trading eggs on Internet is designed and implemented under the polynomial secret-sharing algorithm. Essentially the bid-opening process is to retrieve the data from different secrete-sharing site servers and find the bid winners. At the design phase, the bid-opening process is specified by IDEF0 technique. Then the corresponding database for storing the secrete-sharing data is designed using minimal cover theorem and IDEF1X technique. At the implementation phase, many software modules have to be implemented to execute the four major tasks in finding the bid winners. Task one recovers the true transaction data by refining the mixed secret-sharing data. Task two forms a look-up table for the supply and demand curves generated from the transaction data. Task three is to decide the parameters for finding the equilibrium of demand and supply curves. Task four is to generate their graphic and tabular outputs for winners. The experimental bid-opening system for trading eggs has been well tested at various environments. The performance shows the feasibility of the underlying system.