Lattice basis delegation in fixed dimension and shorter-ciphertext hierarchical IBE

Agrawal, Shweta, Boneh, Dan, & Boyen, Xavier (2010) Lattice basis delegation in fixed dimension and shorter-ciphertext hierarchical IBE. Lecture Notes in Computer Science, 6223, pp. 98-115.

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We present a technique for delegating a short lattice basis that has the advantage of keeping the lattice dimension unchanged upon delegation. Building on this result, we construct two new hierarchical identity-based encryption (HIBE) schemes, with and without random oracles. The resulting systems are very different from earlier lattice-based HIBEs and in some cases result in shorter ciphertexts and private keys. We prove security from classic lattice hardness assumptions.

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66 citations in Web of Science®

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ID Code: 69174
Item Type: Journal Article
Refereed: Yes
Additional Information: Proceedings of the 30th Annual Cryptology Conference, Santa Barbara, CA, USA, August 15-19, 2010.
Keywords: Data encryption, Management of computing and information systems, Computer communication networks, Systems and data security
DOI: 10.1007/978-3-642-14623-7_6
ISSN: 0302-9743
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 International Association for Cryptologic Research
Deposited On: 26 Mar 2014 00:25
Last Modified: 19 Oct 2014 21:31

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