Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

12-2017

Abstract

At Crypto’10, Agrawal et al. proposed a lattice-based selectively secure Hierarchical Identity-based Encryption (HIBE) scheme (ABB10b) with small ciphertext on the condition that (the length of identity at each level) is small in the standard model. In this paper, we present another lattice-based selectively secure HIBE scheme with depth d, using a gadget matrix with enough large to replace the matrix in the HIBE scheme proposed by Agrawal et al. at Eurocrypt’10. In our HIBE scheme, not only the size of ciphertext at level is larger than the size in ABB10b and at least smaller than the sizes in the previous HIBE schemes except ABB10b, but also the size of the master public key is at least O(d) times smaller than the previous schemes.

Keywords

Lattices, Hierarchical identity-based encryption, Selectively secure, Compact public parameters

Discipline

Information Security

Research Areas

Cybersecurity

Areas of Excellence

Digital transformation

Publication

Proceedings of the19th International Conference, ICICS 2017, Beijing, China, December 6-8

First Page

210

Last Page

221

ISBN

9783319895000

Identifier

10.1007/978-3-319-89500-0_19

Publisher

Springer

City or Country

Cham

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1007/978-3-319-89500-0_19

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