Generic Construction of Server-Aided Revocable Hierarchical Identity-Based Encryption with Decryption Key Exposure Resistance

Yanyan Liu; Yiru Sun

Paper 2019/1455

Generic Construction of Server-Aided Revocable Hierarchical Identity-Based Encryption with Decryption Key Exposure Resistance

Yanyan Liu and Yiru Sun

Abstract

In this paper, we extend the notion of server-aided revocable identity-based encryption (SR-IBE) to the hierarchical IBE (HIBE) setting and propose a generic construction of server-aided revocable hierarchical IBE (SR-HIBE) schemes with decryption key exposure resistance (DKER) from any (weak) L-level revocable HIBE scheme without DKER and (L+1)-level HIBE scheme. In order to realize the server-aided revocation mechanism, we use the “double encryption” technique, and this makes our construction has short ciphertext size. Furthermore, when the maximum hierarchical depth is one, we obtain a generic construction of SR-IBE schemes with DKER from any IBE scheme and two-level HIBE scheme.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: server-aided revocation mechanism HIBE DKER
Contact author(s): liuyanyan @ iie ac cn
History: 2019-12-19: revised; 2019-12-18: received; See all versions
Short URL: https://ia.cr/2019/1455
License: CC BY

BibTeX

@misc{cryptoeprint:2019/1455,
      author = {Yanyan Liu and Yiru Sun},
      title = {Generic Construction of Server-Aided Revocable Hierarchical Identity-Based Encryption with Decryption Key Exposure Resistance},
      howpublished = {Cryptology ePrint Archive, Paper 2019/1455},
      year = {2019},
      note = {\url{https://eprint.iacr.org/2019/1455}},
      url = {https://eprint.iacr.org/2019/1455}
}