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題名 | 多文件門檻式加密機制之研究=The Study of Multi-Document Cryptosystem Based on Threshold Secret Sharing Scheme |
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作 者 | 蘇品長; 呂俊成; | 書刊名 | 長榮大學學報 |
卷期 | 16:1 2012.06[民101.06] |
頁次 | 頁87-100 |
分類號 | 312.76 |
關鍵詞 | 橢圓曲線密碼系統; 門檻式加密; 多文件; Elliptic curve cryptography; Threshold scheme; Multi-document; |
語文 | 中文(Chinese) |
中文摘要 | 在一個講求效率的電子化公文時代,如何利用數位科技來達到更高的效益,對於分秒必爭的企業來說是十分重要的事情,但在資訊極易被攔截的網路環境,所傳遞的機密訊息如未經過完善的加密處理,將容易導致重要的資訊被竊取,進而造成企業的重大損失。在本論文中我們利用橢圓曲線密碼系統來進行文件的加解密,其特點在於相同的密鑰長度下,其運算速度將比現行RSA、Elgamal密碼系統更加快速;並結合(t, n)門檻式密碼系統的優點,使其密文具有門檻的特性,當解密者人數未達到門檻值時將無法解開密文,能有效的防止有心人惡意竊取與監守自盜的情事。另考量到現實環境的資訊傳遞模式大多以極為大量的資訊傳輸為前提,如採用傳統一份公文加密一次的方法,在遭遇數以萬計的公文往來勢必要經過數以萬次的簽密運算,所耗費的時間甚鉅,因此本論文提出多重公文一次加密之應用方法,能夠大大減少企業間公文的加密次數,達到縮短作業時間、提升效率及增加系統安全性的目的。 |
英文摘要 | In an electronic-society, how to use the digital technology to make more benefit is very important for modern company. However, the secret message without encryption in unsafe internet world will be stolen easily and cause the huge damage to the company. In this paper, we use Elliptic Curve Cryptography to encrypt message, the advantage is that the speed of processing is faster than RSA and Elgamal Cryptography in the same key length. And we also use threshold scheme, it can't be decrypted successfully when the number of people who want to decrypt the secret message doesn't approach the threshold. Nowadays, we send a lot of messages in one time, we have to encrypt messages one by one. This process will waste too much time. We propose the multi-document cryptosystem that can reduce the times of message encryption, decrease the working time, and increase the work efficiency and system security. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。