Cryptology ePrint Archive: Report 2018/645

Mitigating the One-Use Restriction in Attribute-Based Encryption

Lucas Kowalczyk and Jiahui Liu and Kailash Meiyappan and Tal Malkin

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.

Category / Keywords: attribute-based encryption

Date: received 3 Jul 2018, last revised 18 Oct 2018

Contact author: luke at cs columbia edu

Available format(s): PDF | BibTeX Citation

Note: added acknowledgements

Version: 20181018:161115 (All versions of this report)

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