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Authenticated Key Agreement with Rekeying for Secured Body Sensor Networks

機(jī)譯：經(jīng)過身份驗(yàn)證的密鑰協(xié)議與用于安全的人體傳感器網(wǎng)絡(luò)的密鑰更新

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Many medical systems are currently equipped with a large number of tiny, non-invasive sensors, located on, or close to, the patient’s body for health monitoring purposes. These groupings of sensors constitute a body sensor network (BSN). Key management is a fundamental service for medical BSN security. It provides and manages the cryptographic keys to enable essential security features such as confidentiality, integrity and authentication. Achieving key agreement in BSNs is a difficult task. Many key agreement schemes lack sensor addition, revocation, and rekeying properties, which are very important. Our proposed protocol circumvents these shortcomings by providing node rekeying properties, as well as node addition and revocation. It proposes a key distribution protocol based on public key cryptography—the RSA (Rivest, Shamir and Adleman) algorithm, and the DHECC (Diffie-Hellman Elliptic Curve Cryptography) algorithm. The proposed protocol does not trust individual sensors, and partially trusts the base station (hospital). Instead of loading full pair-wise keys into each node, after installation our protocol establishes pair-wise keys between nodes according to a specific routing algorithm. In this case, each node doesn’t have to share a key with all of its neighbors, only those involved in the routing path; this plays a key role in increasing the resiliency against node capture attacks and the network storage efficiency. Finally we evaluate our algorithm from the BSN security viewpoint and evaluate its performance in comparison with other proposals.
機(jī)譯：當(dāng)前，許多醫(yī)療系統(tǒng)都配備有大量微型，無創(chuàng)傳感器，它們位于患者身體上或附近，用于健康監(jiān)測。這些傳感器分組構(gòu)成了身體傳感器網(wǎng)絡(luò)（BSN）。密鑰管理是醫(yī)療BSN安全的基本服務(wù)。它提供并管理加密密鑰，以啟用基本的安全功能，例如機(jī)密性，完整性和身份驗(yàn)證。在BSN中達(dá)成關(guān)鍵協(xié)議是一項(xiàng)艱巨的任務(wù)。許多關(guān)鍵協(xié)議方案缺少傳感器添加，吊銷和重新設(shè)置密鑰的屬性，這非常重要。我們提出的協(xié)議通過提供節(jié)點(diǎn)重命名屬性以及節(jié)點(diǎn)添加和撤銷來規(guī)避這些缺點(diǎn)。它提出了一種基于公共密鑰加密的密鑰分發(fā)協(xié)議，即RSA（Rivest，Shamir和Adleman）算法和DHECC（Diffie-Hellman橢圓曲線密碼術(shù)）算法。提議的協(xié)議不信任各個(gè)傳感器，而是部分信任基站（醫(yī)院）。安裝后，我們的協(xié)議不會將完整的成對密鑰加載到每個(gè)節(jié)點(diǎn)中，而是根據(jù)特定的路由算法在節(jié)點(diǎn)之間建立成對密鑰。在這種情況下，每個(gè)節(jié)點(diǎn)不必與其所有鄰居共享密鑰，而只需與路由路徑中的鄰居共享密鑰即可。這在提高抵御節(jié)點(diǎn)捕獲攻擊的彈性和網(wǎng)絡(luò)存儲效率方面起著關(guān)鍵作用。最后，我們從BSN安全性角度評估了我們的算法，并與其他提議進(jìn)行了比較來評估其性能。

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