植入式醫療裝置被用以拯救病患的生命，然而不夠安全的通訊設計，將對使用者的生命安全造成威脅。植入式醫療裝置通常存在低運算能力，及無法充電的不利條件。因此其安全性不僅是重要的議題，也要考慮安全機制與節能之間的權衡。
為保護使用植入式醫療裝置的病患安全，本論文提出一個基於生理特徵的新安全架構，以及新提出的積極的網路裝置群的觀念及實作，並使用協作通訊以提升其資料傳輸的效率與可靠度，以保護植入式裝置與醫院資訊系統間的通訊安全。
本論文中提出了一個資料加密及散播的新方法，將植入式裝置與穿戴式裝置串成一幫積極合作的網路裝置群，成員間相互驗證與合作，以提升植入式裝置的電池使用效率並避免攻擊導致資料洩漏或指令竄改。在通訊期間使用生物特徵產生金鑰，以確定性亂數位元產生器演算法提高金鑰的安全強度，並使每個傳送的加密資料，彼此連接成鏈狀。裝置群的成員在指定的時間內對植入式醫療裝置的通訊需求做出反應，以確保與植入式醫療裝置有關的任務都能被這些成員優先處理，並藉以偵測出可能的攻擊行為。最後，透過與現行架構比較、安全分析與實驗，以說明此架構之可行性。

Implantable medical devices (IMDs) are used to save a patient's life. However, insecurely designed IMDs can be life threatening. Usually, IMDs have low computational power and cannot be recharged, which presents adverse conditions for IMDs. Thus, security is not only an important issue but also requires a tradeoff between efficiency and security.
To secure communication between an IMD and the hospital information system, this study proposes a new biometric-based security scheme to protect the safety of patients equipped with IMDs. In addition, the concept of gregariously aggressive networked gears (GANG) is implemented, which uses cooperative communication to enhance the efficiency and reliability of transmission.
Furthermore, this research also proposes a new secure authentication and distribution scheme that links the IMD and wearable devices into a network of GANG. To improve battery life and prevent tampering and disclosure attacks, the members of this network establish mutual authentication and cooperation. During communication, a biometric key generator uses a physiological signal to generate a key, using a deterministic random bit generator (DRBG) to enhance the security strength of the symmetric key. Moreover, it transforms the encrypted data into a chain for communication. The gears of a GANG member should always react within the designated time when communicating with the IMD to ensure its high priority and detect any attack activities.
Finally, through security analyses and experiments, the proposed scheme is demonstrated to be feasible compared with existing schemes.

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