Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

7-2018

Abstract

Dual receiver encryption (DRE), proposed by Diament et al. at ACM CCS 2004, is a special extension notion of public-key encryption, which enables two independent receivers to decrypt a ciphertext into a same plaintext. This primitive is quite useful in designing combined public key cryptosystems and denial of service attack-resilient protocols. Up till now, a series of DRE schemes are constructed with bilinear pairing groups. In this work, we introduce the first construction of lattice-based DRE. Our scheme is secure against chosen-ciphertext attacks from the standard Learning with Errors (LWE) assumption with a public key of bit-size about 2nmlog⁡q, where m and q are small polynomials in n. Additionally, for the DRE notion in the identity-based setting, identity-based DRE (ID-DRE), we also give a lattice-based ID-DRE scheme that achieves chosen-plaintext and adaptively chosen identity security based on the LWE assumption with public parameter size about (2ℓ+1)nmlog⁡q, where ℓ is the bit-size of the identity in the scheme.

Keywords

Lattices, Dual receiver encryption Identity-based dual receiver encryption, Learning with errors

Discipline

Information Security

Research Areas

Cybersecurity

Areas of Excellence

Digital transformation

Publication

Proceedings of the 23rd Australasian Conference, ACISP 2018 Wollongong, Australia, July 11-13,

First Page

520

Last Page

538

ISBN

9783319936383

Identifier

10.1007/978-3-319-93638-3_30

Publisher

Springer

City or Country

Cham

Copyright Owner and License

Authors

Additional URL

https://doi.org/10.1007/978-3-319-93638-3_30

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