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2018•IACR Cryptology ePrint ArchiveRequires access

Mitigating the One-Use Restriction in Attribute-Based Encryption.

Lucas Kowalczyk, Jiahui Liu, Tal Malkin, Kailash Meiyappan

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Abstract

We present a key-policy attribute-based encryption scheme that is adaptively secure under a static assumption and is not directly affected by an attribute “one-use restriction”. Our construction improves upon the only other such scheme (Takashima ’17) by mitigating its downside of a ciphertext size that is dependent on the maximum size of any supported attribute set.

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What this paper is about

We present a key-policy attribute-based encryption scheme that is adaptively secure under a static assumption and is not directly affected by an attribute “one-use restriction”. Our construction improves upon the only other such scheme (Takashima ’17) by mitigating its downside of a ciphertext size that is dependent on the maximum size of any supported attribute set.

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Available abstract

We present a key-policy attribute-based encryption scheme that is adaptively secure under a static assumption and is not directly affected by an attribute “one-use restriction”. Our construction improves upon the only other such scheme (Takashima ’17) by mitigating its downside of a ciphertext size that is dependent on the maximum size of any supported attribute set.

Key concepts: Ciphertext, Encryption, Attribute-based encryption, Computer science, Key (lock), Scheme (mathematics), Set (abstract data type), Theoretical computer science

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