抄録
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Category: Grant-in-Aid for Young Scientists (B), Fund Type: competitive_research_funding, Overall Grant Amount: - (direct: 3000000, indirect: 900000)
Identity-based encryption (IBE) is public-key encryption that enables us to use arbitrary strings, such as e-mail addresses, for public keys. In this project, we aimed to improve IBE schemes with various secret-key leakage resilience properties so that simultaneously achieve strong security levels and high efficiency, and to realize a new model of secret-key leakage resilience for IBE. We finally obtained various results on revocable IBE and key-insulated IBE, and formalized a new model of secret-key leakage resilience.