代理簽章應用於地形滑動監測系統

Proxy Signature Applied in Monitoring System for Terrain Changes

梁菱仁(Ling-Ren Liang)

指導教授 ： 楊伏夷

朝陽科技大學/資訊學院/資訊工程系/碩士(2011年)

摘要

隨著都市漸漸發展，為了使交通更便利，必須開闢更多的道路，但由於都市與都市之間可能遭到山坡阻隔，因此許多道路都沿著山坡建造，或者是建造在山坡上，經過天災的侵襲後，不免造成土質鬆脫或是地形滑動的情況，導致事故的發生；以現今的科技發展，能透過感測器或設備監測土質狀況，但訊息在傳遞時，可能會遭到惡意人士竄改，影響監測單位做出正確的判斷。
為了解決上述狀況，在本篇論文中，我們將設計一個有效率的代理簽章協定，並將協定應用於地形滑動監測系統。透過監測單位授權給感測器，感測器在取得位置訊息後，會產生代理簽章，再將簽章透過路邊裝置回傳給監測單位，以便監測單位判斷監測地區的地形狀況，倘若有地形滑動現象，則立即產生警告訊息簽章，再將警告訊息傳至路邊裝置，路邊裝置使用廣播的方式讓行駛車輛接收，接收到訊息的車輛能使用監測單位的公開金鑰進行驗證，確認訊息的有效性；因此我們設計的協定能即時的警告行駛車輛，減低事故的發生，在協定安全方面，能提供訊息的有效性，也能抵擋其他種類的攻擊。

關鍵字

代理簽章 ； 地形滑動 ； 監測系統

並列摘要

As cities gradually develop, more roadways are needed to facilitate traffic networks. However, cities may be separated by hills, and thus many roadways are developed along hillsides or on the hills. Loose soil and landslides are inevitable after natural disasters assaults, resulting in accidents. Current technology development can make use of sensors or equipment to monitor soil conditions. However, transmitted information may be altered by someone with malicious intent, which influences the ability of monitoring organizations to produce correct judgment.
In order to cope with this obstacle, this study designs an effective proxy signature protocol that can be applied to monitoring system for terrain changes. The sensors are authorized by monitoring organizations. When a sensor receives the information of location, it produces a proxy signature and returns the signature to the organization via roadside devices, which enables the monitoring organization to estimate the surveillance areas. Once a landslide occurs, a prompt warning message signature will be produced and transmitted to a roadside device. The device uses a broadcast system to send messages to vehicles, and the vehicles use the public key of monitoring organizations to validate the information. Therefore, the design can send prompt warnings to vehicles to reduce accidents. The design can also provide effective information regarding protocol safety, as well as preventing other kinds of attacks.

並列關鍵字

proxy signature ； landslides ； monitoring systems

參考文獻

[1] C. C. Chang and Y. P. Lai, “A Flexible Date-Attachment Scheme on E-Cash”, Computers & Security, Vol. 22, No. 2, pp.160-166, 2003.

[2] W. S. Juang, “D-Cash：A Flexible Pre-Paid E-Cash Scheme for Date-Attachment”, Electronic Commerce Research and Applications, Vol. 6, No. 1, pp.74-80, 2007.

[4] C. C. Chang, S. C. Chang, and J. S. Lee, “An On-Line Electronic Check System with Mutual Authentication”, Computers & Electrical Engineering, Vol. 35, pp. 757-763, September 2009.

[5] C. P. Schnorr, “Efficient Signature Generation for Smart Cards”, Journal of Cryptology, Vol. 4, pp. 161-174, 1991.

[6] T. ElGamal, “A Public Key Cryptosystem and A Signature Scheme Based on Discrete Logarithms”, IEEE Transactions on Information Theory, Vol. 31, No. 4, pp. 469-472, 1985.