Improved Lattice-Based Signcryption in the Standard Model

IEEE Access

Xiaopeng Yang¹  Hejun Xuan¹  Hao Cao²  Weichun Li³ 

[1] Department of Electrical and Electronic Engineering, China Coast Guard Academy, Ningbo, China;State Key Laboratory of Integrated Services Networks, Xidian University, Xi&x2019;an, China;

关键词: Signcryption;    lattice;    encapsulation;    ring learning with errors (RLWE) problem;    ideal short integer solution (ISIS) problem;   

DOI  :  10.1109/ACCESS.2019.2949429

来源: DOAJ

【 摘 要 】

Signcryption is a basic cryptographic primitive that simultaneously captures the functions of encryption and signature. To realize comprehensive information security against quantum computing attacks, lattice-based signcryption schemes have been successively proposed. However, the performance of signcryption schemes should be improved in the lattice setting. An efficient lattice-based signcryption scheme in the standard model is proposed in this paper. Under the ring learning with errors (RLWE) assumption and the ideal short integer solution (ISIS) assumption, the proposed signcryption scheme achieves indistinguishability against adaptive chosen ciphertext attacks (IND-CCA2) and existential unforgeability under an adaptive chosen-message attack (EUF-ACMA). Our scheme not only reduces the communication and computational overhead but also realizes a new design that combines the partitioning technique with the idea of tag-based key encapsulation. The performance analysis results show that our scheme is more efficient than previous lattice-based signcryption schemes in the standard model.

【 授权许可】

Unknown