上海交通大学学报(英文版) ›› 2017, Vol. 22 ›› Issue (3): 313-321.doi: 10.1007/s12204-017-1837-1

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Lattice-Based Group Signature with Verifier-Local Revocation

GAO Wen* (高雯), HU Yupu (胡予濮), ZHANG Yanhua (张彦华), WANG Baocang (王保仓)   

  1. (State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China)
  • 出版日期:2017-06-02 发布日期:2017-06-04
  • 通讯作者: GAO Wen (高雯) E-mail:janegw@163.com

Lattice-Based Group Signature with Verifier-Local Revocation

GAO Wen* (高雯), HU Yupu (胡予濮), ZHANG Yanhua (张彦华), WANG Baocang (王保仓)   

  1. (State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China)
  • Online:2017-06-02 Published:2017-06-04
  • Contact: GAO Wen (高雯) E-mail:janegw@163.com

摘要: Among several post quantum primitives proposed in the past few decades, lattice-based cryptography is considered as the most promising one, due to its underlying rich combinatorial structure, and the worst-case to average-case reductions. The first lattice-based group signature scheme with verifier-local revocation (VLR) is treated as the first quantum-resistant scheme supported member revocation, and was put forward by Langlois et al. This VLR group signature (VLR-GS) has group public key size of O(nmlogN log q), and a signature size of O(tm logN log q log β). Nguyen et al. constructed a simple efficient group signature from lattice, with significant advantages in bit-size of both the group public key and the signature. Based on their work, we present a VLR-GS scheme with group public key size of O(nm log q) and signature size of O(tm log q). Our group signature has notable advantages: support of membership revocation, and short in both the public key size and the signature size.

关键词: lattice-based, member revocation, digital signature

Abstract: Among several post quantum primitives proposed in the past few decades, lattice-based cryptography is considered as the most promising one, due to its underlying rich combinatorial structure, and the worst-case to average-case reductions. The first lattice-based group signature scheme with verifier-local revocation (VLR) is treated as the first quantum-resistant scheme supported member revocation, and was put forward by Langlois et al. This VLR group signature (VLR-GS) has group public key size of O(nmlogN log q), and a signature size of O(tm logN log q log β). Nguyen et al. constructed a simple efficient group signature from lattice, with significant advantages in bit-size of both the group public key and the signature. Based on their work, we present a VLR-GS scheme with group public key size of O(nm log q) and signature size of O(tm log q). Our group signature has notable advantages: support of membership revocation, and short in both the public key size and the signature size.

Key words: lattice-based, member revocation, digital signature

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