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Hierarchical Identity-based Broadcast Encryption Scheme from LWE
Chunli Yang,Shihui Zheng,Licheng Wang,Xiuhua Lu,Yixian Yang 한국통신학회 2014 Journal of communications and networks Vol.16 No.3
A hierarchical identity-based broadcast encryption (HIBBE)scheme is an identity-based broadcast encryption (IBBE)scheme in a hierarchical environment. In order to obtain secure HIBBEschemes in the quantum era, we propose an H-IBBE schemebased on the learning with errors problemassumption.Our schemeachieves indistinguishability from random under adaptive chosenplaintextand chosen-identity attacks in the random oracle model.