Hierarchial Identity-Based Encryption Scheme from Multilinear Maps

Identity-based encryption (IBE) is an important primitive of identity-based cryptography. As such it is a type of public-key encryption in which the public key of a user is some unique information about the identity of the user (e.g. a user's email address). Hierarchical identity-based encrypti...

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Bibliographic Details
Published in2014 Tenth International Conference on Computational Intelligence and Security pp. 455 - 458
Main Authors Hao Wang, Zhihua Zheng, Lei Wu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2014
Subjects
Encryption
Games
HIBE
Identity-based encryption
multilinear decisional Diffie-Hellmanin assumption
multilinear map
selective-ID model
Vectors
Online AccessGet full text
DOI10.1109/CIS.2014.112

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Summary:Identity-based encryption (IBE) is an important primitive of identity-based cryptography. As such it is a type of public-key encryption in which the public key of a user is some unique information about the identity of the user (e.g. a user's email address). Hierarchical identity-based encryption (HIBE) provides more functionality by forming levels of an organizational hierarchy. A user can delegate secret keys to descendant identities at lower levels, but cannot decrypt messages intended for a recipient that is not among its descendants. In this paper, we construct a new HIBE scheme in a generic leveled multilinear map setting and prove its security under multilinear decisional Diffie-Hellmanin assumption in the selective-ID model.
DOI:10.1109/CIS.2014.112