To allow more general key derivation patterns, the concept of wicked identity-based encryption (wicked IBE) was introduced. It is an extension of hierarchical identity based encryption (HIBE). Recently, research on leakage-resilient wicked IBE has attracted much attention for its consideration on the problem of key leakage in system. However, the existing works implement leakage resistance under the bounded leakage model and fail to capture general form of leakage attacks. Through designing the generation of the master secret key and the user secret key reasonably, a wicked IBE scheme resilient to continual auxiliary-inputs leakage is proposed in this paper. The leakage of our scheme is not only from the user secret key, but also from the master secret key. We show the scheme is proven fully secure in the standard model based on the subgroup decision assumption in composite-order bilinear groups and the Goldreich-Levin theorem in Galois field. To achieve this goal, the dual system encryption technology is exploited in the security proof. Compared with existing leakage-resilient wicked IBE, our scheme has a better performance in leakage resilience and security.

为了允许更通用的密钥派生模式，引入了基于邪恶的基于身份的加密（wicked IBE）的概念。它是基于分层身份的加密（HIBE）的扩展。近年来，关于防漏胶芯IBE的研究由于其对系统密钥泄漏问题的考虑而备受关注。但是，现有的工作在有界漏模型下实现了抗漏性，无法捕获一般形式的漏电攻击。通过合理设计主密钥和用户密钥的生成，提出了一种能够抵抗连续辅助输入泄漏的邪恶IBE方案。我们方案的泄漏不仅来自用户密钥，还来自主密钥。基于组合阶双线性群中的子群决策假设和Galois场中的Goldreich-Levin定理，我们证明了该方案在标准模型中被证明是完全安全的。为了实现这一目标，在安全性证明中采用了双重系统加密技术。与现有的防泄漏芯吸式IBE相比，我们的方案在防泄漏弹性和安全性方面具有更好的性能。