Semantic security IBE against adaptive leakage in a split-state model

In allusion to the problem that semantic security scheme resilient to adaptive leakage was lacked in identity-based encryption, we present an adaptive-leakage resilient identity-based encryption (IBE) scheme in a split-state model. In our construction, we firstly define semantic security against adaptive leakage in a split-state model. Then based on the entropic leakage-resilient IBE scheme we constructed before, we use it to get full semantic security in a split-state model in the presence of adaptive leakage. Security analysis shows that the scheme can not only resist adaptive leakage effectively, but also tolerate almost all of the secret key leakage.