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EUROCRYPT
2010
Springer
14 years 4 months ago
Fully Secure Functional Encryption: Attribute-Based Encryption and (Hierarchical) Inner Product Encryption
In this paper, we present two fully secure functional encryption schemes. Our first result is a fully secure attribute-based encryption (ABE) scheme. Previous constructions of AB...
Allison B. Lewko, Tatsuaki Okamoto, Amit Sahai, Ka...
EUROCRYPT
2012
Springer
12 years 1 months ago
Adaptively Attribute-Hiding (Hierarchical) Inner Product Encryption
This paper proposes the first inner product encryption (IPE) scheme that is adaptively secure and fully attribute-hiding (attribute-hiding in the sense of the definition by Katz...
Tatsuaki Okamoto, Katsuyuki Takashima
CRYPTO
2010
Springer
195views Cryptology» more  CRYPTO 2010»
14 years 8 days ago
Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption
This paper presents a fully secure functional encryption scheme for a wide class of relations, that are specified by non-monotone access structures combined with inner-product rel...
Tatsuaki Okamoto, Katsuyuki Takashima
CRYPTO
2012
Springer
215views Cryptology» more  CRYPTO 2012»
12 years 1 months ago
New Proof Methods for Attribute-Based Encryption: Achieving Full Security through Selective Techniques
We develop a new methodology for utilizing the prior techniques to prove selective security for functional encryption systems as a direct ingredient in devising proofs of full sec...
Allison B. Lewko, Brent Waters
ASIACRYPT
2011
Springer
12 years 11 months ago
Functional Encryption for Inner Product Predicates from Learning with Errors
We propose a lattice-based functional encryption scheme for inner product predicates whose security follows from the difficulty of the learning with errors (LWE) problem. This co...
Shweta Agrawal, David Mandell Freeman, Vinod Vaiku...