Universal Composability Notion for Functional Encryption Schemes

Autor: Rifki Sadikin, KilHoum Park, SangJae Moon, Young-Ho Park
Rok vydání: 2013
Předmět:
Zdroj: Journal of the Korea Industrial Information Systems Research. 18:17-26
ISSN: 1229-3741
DOI: 10.9723/jksiis.2013.18.3.017
Popis: We have developed an ideal functionality for security requirement of functional encryption schemes. The functionality is needed when we want to show the security of a functional encryption scheme in universal composable (UC) framework. A functionality F fe was developed to represent ideal respond of a functional encryption scheme against any polynomial time active attacker. We show that UC security notion of functional encryption scheme F fe is as strong as fully secure functional encryption in an indistinguishable game with chosen cipher text attack. The proof used a method that showing for any environment algorithm, it can not distinguish ideal world where the attacker play with ideal functionality F fe and real world where the attacker play a fully secure functional encryption scheme.
Databáze: OpenAIRE