嵌入式Word編輯器之數位簽章系統開發

Abstract

隨著個人電腦及網際網路的普及應用，促使電子商務的應用範疇的突飛猛進,現在人們的買賣方式可以不再受到時間、空間及對象的限制，大部分的交易均可以隨時隨地在個人電腦前，以數位方式經由網際網路的傳輸，與不特定的對象溝通，談生意並完成交易。但是由於網際網路是一個開放的網路，線上進行的交易資料有被冒名傳送及被竄改之風險，而且進行交易的雙方，有可能彼此並不認識對方，所以亦無法辨識對方身分的真實性。 本論文的研究動機，就是基於上述所提的問題，希望能夠開發一套數位簽章(Digit signature)系統，使它可以直接嵌入(Plug-in)現已被廣被使用的Word文字編輯器，如此一來，使用者不但可以直接使用他原已熟悉的文字編輯器，來填寫他的訂單，並可透過他現有的e-mail系統，將訂單傳送到客戶的電子信箱，而收信的對方，更可以根據他收到訂單，來進行身分及內容的查核，以確保該訂單沒有被冒名傳送及竄改，並且將來如果雙方對於該訂單的真實性發生爭議時，可以直接根據訂單上的數位簽章，來進行公正的裁奪。

Along with the widespread use and application of personal computer and internet , e commerce is also booming in its application fields ,people nowadays are no longer be limited by time , space and target in the transaction method , most of the business nowadays can be completed any time and anywhere just in front of a personal computer and digitally through the transmission by internet , the transaction targets are no longer limited too . But since internet is an open network , online transaction data could possibly be transmitted by impostor or have the risk of being modified . Furthermore , both sides on transaction could possibly be not familiar with each other , it is also difficult to distinguish the reality of identity of the opposite side . The motive of this study is try to solve the above-mentioned problem , we try to develop a Digital Signature system , the currently wide-spread used Microsoft Word editor can be embedded directly in the system, therefore , user can use directly the word editor that he/she is familiar with to fill the purchase order , it can also transmit the purchase order to customer’s email box through its existed e-mail system ,moreover , email receiver could perform ID check and content examination to make sure the purchase order has not been transmitted by impostor or modified , in the future , if there is any controversy of the reality of the purchase order between both sides , the digital signature on the purchase order can be used to judge which side is right.