Name
Abstract | ||
|---|---|---|
In this paper, we propose an efficient, standard model, semigeneric transformation of selective-secure (Hierarchical) Identity-Based Encryption schemes into fully secure ones. The main step is a procedure that uses admissible hash functions (whose existence is implied by collision-resistant hash functions) to convert any selective-secure wildcarded identity-based encryption (WIBE) scheme into a fully secure (H)IBE scheme. Since building a selective-secureWIBE, especially with a selective-secure HIBE already in hand, is usually much less involved than directly building a fully secure HIBE, this transform already significantly simplifies the latter task. This black-box transformation easily extends to schemes secure in the Continual Memory Leakage (CML) model of Brakerski et al. (FOCS 2010), which allows us obtain a new fully secure IBE in that model. We furthermore show that if a selective-secure HIBE scheme satisfies a particular security notion, then it can be generically transformed into a selective-secure WIBE. We demonstrate that several current schemes already fit this new definition, while some others that do not obviously satisfy it can still be easily modified into a selective-secure WIBE. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1007/978-3-642-30057-8_19 | IACR Cryptology ePrint Archive |
Keywords | DocType | Volume |
selective-secure hibe,semi-generic transformation,current scheme,secure ibe,black-box transformation,selective-secure wibe,ibe scheme,admissible hash function,selective-secure hibe scheme,full security,standard model,identity-based encryption scheme | Conference | 2012 |
ISSN | Citations | PageRank |
0302-9743 | 2 | 0.39 |
References | Authors | |
33 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Michel Abdalla | 1 | 1660 | 76.80 |
| Dario Fiore | 2 | 662 | 37.44 |
| Vadim Lyubashevsky | 3 | 1174 | 59.91 |