As a potential technology, the identity-based online/offline encryption scheme is split into two phases (the offline phase and the online phase) which is especially suitable for sensor nodes with limited computation resources in that most of the works can be executed offline. However, a challenging issue is the well-known identity-based online/offline encryption schemes unable to resist continual key leakage attacks of the secret keys. To address the above security challenge, we put forth the first continual leakage-resilient identity-based online/offline encryption scheme which is suitable for ensuring secure communications in wireless sensor networks. More specifically, our formal security proofs analysis indicates that the proposed scheme can guarantee security even if partial information of the secret key is continually leaked due to side-channel attacks or fault injection attacks. Above all, compared to the existing identity-based online/offline encryption schemes, an identity-based online/offline encryption scheme with continual leakage resilient meets wireless sensor networks with strong security.

中文翻译：

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具有连续泄漏弹性的无线传感器网络基于身份的可证明安全在线/离线加密方案

作为一种潜在的技术，基于身份的在线/离线加密方案分为两个阶段（离线阶段和在线阶段），特别适用于计算资源有限的传感器节点，因为大部分工作可以离线执行。然而，一个具有挑战性的问题是众所周知的基于身份的在线/离线加密方案无法抵抗秘密密钥的持续密钥泄漏攻击。为了解决上述安全挑战，我们提出了第一个基于连续泄漏弹性身份的在线/离线加密方案，适用于确保无线传感器网络中的安全通信。进一步来说，我们的形式安全证明分析表明，即使由于侧信道攻击或故障注入攻击，密钥的部分信息不断泄漏，所提出的方案也能保证安全。最重要的是，与现有的基于身份的在线/离线加密方案相比，具有持续泄漏弹性的基于身份的在线/离线加密方案满足安全性强的无线传感器网络。