在我們設計的遠程測量系統中，多個基于ARM 的嵌入式系統位于測量點，管理員可
通過網絡對其進行訪問。為實現系統的安全訪問，設計了基于群簽名的遠程測量系統訪問協議。本協議采用可驗證的、無可信中心的(k, n)門限密碼系統產生系統的公/私密鑰，征集k個管理者為系統中的用戶生成證書和訪問測量系統的公/私密鑰。分析顯示協議能極好的抵御各種攻擊。
關鍵詞：門限密碼系統；單點登陸；嵌入式系統
Abstract: In our long-range measurement system, ARM-based embedded devices located in the measurement points. Managers can access the devices through internet. The Group-Signature-based Secure Protocol for long-range measurement system was designed for security. In our protocol, a verifiable threshold cryptosystem without a trusted center is applied to generate system public/private keys. K managers can generate certification and user public/private keys for user. The security analysis show that the protocol has desirable features of reliability, accountability and is secure in the presence of a variety of possible attacks.
Key words: threshold cryptosystem; Single Sign-On; embedded system