International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Jin Wang

Publications

Year
Venue
Title
2010
EPRINT
Lattice-based Identity-Based Broadcast Encryption Scheme
Jin Wang Jingguo Bi
Motivated by the lattice basis delegation technique due to [8], we propose an adaptively secure identity-based broadcast encryption(IBBE) scheme based on the hard worst-case lattice problems. Our construction can be generalized to obtain a hierarchical IBBE (HIBBE) scheme easily. To the best of the authors' knowledge, our construction and its variants constitute the first adaptively secure IBBE schemes from lattices, which are believed secure in the post-quantum environment.
2010
EPRINT
Ring Signature and Identity-Based Ring Signature from Lattice Basis Delegation
Jin Wang
In this paper, we propose a ring signature (RS) and an identity-based ring signature (IBRS) schemes using the lattice basis del- egation technique due to [10,22]. The schemes are unforgeable and hold anonymity in the random oracle model. Using the method in [28,29], we also extend our constructions to obtain RS and IBRS schemes in the standard model. To the best of the authors' knowledge, our proposed constructions constitute the ¯rst ring signature and identity-based ring signature schemes from lattices

Coauthors

Jingguo Bi (1)