Hierarchical and Efficient Identity-bsed Encryption Against Side Channel Attacks

Hierarchical and identity-based encryption (HIBE) is very valuable widely used in many occasions. In the Internet of Things based on cloud services, efficient HIBE likely to be applied service scenarios for limited computing ability some terminal devices. What’s more, because insecurity cryptographic systems caused by side channel attacks, design leakage resilient scheme has attracted more cryptography researchers' attention. this study, an constructed. (1) essence, given contains a hierarchical ID-based key encapsulation system. By using extractor act encapsulated symmetric key, proposed may resist disclosure due attacks. The relative ratio close 1. (2) We also construct hash proof system that provides security our scheme. can not only but short public parameters computational efficiency, which suitable applications environment. (3) There no limit hierarchy depth system, maximum length required when initialized.