Chosen Ciphertext Secure Encryption over Semi-smooth Subgroup

Qixiang Mei; Bao Li; Xianhui Lu; Dingding Jia

Paper 2010/172

Chosen Ciphertext Secure Encryption over Semi-smooth Subgroup

Qixiang Mei, Bao Li, Xianhui Lu, and Dingding Jia

Abstract

In this paper we propose two public key encryption schemes over the semi-smooth subgroup introduced by Groth05. Both the schemes are proved secure against chosen ciphertext attacks under the factoring assumption. Since the domain of exponents is much smaller, both our schemes are significantly more efficient than Hofheiz-Kiltz 2009 encryption.

Metadata

Available format(s): PS
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): nupfster @ gmail com
nupf @ 163 com
History: 2010-04-04: revised; 2010-04-01: received; See all versions
Short URL: https://ia.cr/2010/172
License: CC BY

BibTeX

@misc{cryptoeprint:2010/172,
      author = {Qixiang Mei and Bao Li and Xianhui Lu and Dingding Jia},
      title = {Chosen Ciphertext Secure Encryption over Semi-smooth Subgroup},
      howpublished = {Cryptology {ePrint} Archive, Paper 2010/172},
      year = {2010},
      url = {https://eprint.iacr.org/2010/172}
}