Title :
New Construction of Fuzzy Identity-Based Encryption
Author :
Li, XiMing ; Yang, Bo ; Zhang, Mingwu
Author_Institution :
Inf. Coll., South China Agric. Univ., Guangzhou, China
Abstract :
In this paper the concept of Fuzzy Identity-Based Encryption schemes with dynamic threshold (DT-FIBE) is proposed and one construction of it is presented. DT-FIBE scheme can be viewed as a variant of SW scheme described by Amit Sahai and Brent Waters in EUROCRYPT 2005 in which the threshold is fixed.The scheme are both error-tolerant and secure against collusion attacks in the fuzzy selective-ID attack model.Under a new complexity assumption: k-BDH assumption, a comprehensive secure proof is given.
Keywords :
cryptography; fuzzy set theory; collusion attacks; comprehensive secure proof; dynamic threshold; fuzzy identity-based encryption schemes; Agricultural engineering; Broadcasting; Educational institutions; Fuzzy sets; Fuzzy systems; Identity-based encryption; Informatics; Public key; Public key cryptography; Decisional Bilinear Diffie-Hellman Assumption; Fuzzy Identity-Based Encryption; dynamic threshold;
Conference_Titel :
Information Engineering, 2009. ICIE '09. WASE International Conference on
Conference_Location :
Taiyuan, Shanxi
Print_ISBN :
978-0-7695-3679-8
DOI :
10.1109/ICIE.2009.175
