Efficient Adaptively Secure IBBE from the SXDH Assumption
Article Type
Research Article
Publication Title
IEEE Transactions on Information Theory
Abstract
This paper describes the first constructions of identity-based broadcast encryption (IBBE) using Type-3 pairings, which can be proved secure against adaptive-identity attacks based on the Symmetric eXternal Diffie-Hellman assumption (which is a static, if not a standard, assumption) achieving a security degradation which is not exponential in the size of the target identity set. The constructions are obtained by extending the currently known most efficient identity-based encryption scheme proposed by Jutla and Roy in 2013. The new constructions fill both a practical and a theoretical gap in the literature on efficient IBBE schemes.
First Page
5709
Last Page
5726
DOI
10.1109/TIT.2016.2575009
Publication Date
10-1-2016
Recommended Citation
Ramanna, Somindu C. and Sarkar, Palash, "Efficient Adaptively Secure IBBE from the SXDH Assumption" (2016). Journal Articles. 4182.
https://digitalcommons.isical.ac.in/journal-articles/4182
