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Practical constructions and new proof methods for large universe attribute-based encryption

ACM Conference on Computer and Communications Security, (2013)

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We propose two large universe Attribute-Based Encryption constructions. In a large universe ABE system any string can be used as an attribute and attributes need not be enumerated at system setup. Our first construction establishes a novel large universe Ciphertext-Policy ABE scheme on prime order bilinear groups, while the second achieve...更多

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