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Title:
Efficient Adaptively Secure IBBE from Standard Assumptions
Authors: Somindu C. Ramanna, Palash Sarkar
Abstract:This paper describes the first construction of efficient identity-based broadcast encryption (IBBE) schemes which can be proved secure against adaptive-identity attacks based on standard assumptions. The constructions are obtained by extending the currently known most efficient identity-based encryption scheme proposed by Jutla and Roy in 2013. Ciphertext size and user storage compare favourably to previously known constructions. The new constructions fill both a practical and a theoretical gap in the literature on efficient IBBE schemes.
ePrint: https://eprint.iacr.org/2014/380
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