Please wait a minute...
FITEE
Front. Inform. Technol. Electron. Eng.  2016, Vol. 17 Issue (2): 135-142    DOI: 10.1631/FITEE.1500197
    
NTRU格上基于身份签名的高效方案
Jia Xie, Yu-pu Hu, Jun-tao Gao, Wen Gao
1School of Telecommunications Engineering, Xidian University, Xi'an 710071, China; 2The State Key Laboratory of Integrated Services Network, Xi'an 710071, China
Efficient identity-based signature over NTRU lattice
Jia Xie, Yu-pu Hu, Jun-tao Gao, Wen Gao
1School of Telecommunications Engineering, Xidian University, Xi'an 710071, China; 2The State Key Laboratory of Integrated Services Network, Xi'an 710071, China
 全文: PDF 
摘要： 目的：众所周知，普通格上的基于身份的签名体制的公钥尺寸较大并且签名效率不甚令人满意，为提高格上的签名效率并且降低其公钥尺寸，本文设计了NTRU格上的基于身份的签名方案。
创新点：将抛弃采样技术扩展到NTRU格上，并利用NTRU格上的SIS问题构造了NTRU格上的首个可证安全的基于身份的签名方案，使得签名效率显著提高，并很大程度地降低了公钥尺寸。
方法：首先，明确NTRU格的定义，提出NTRU格上的小整数解问题（SIS），即定义5，指出该困难问题在量子计算环境下是安全的。然后，将抛弃采样技术扩展到NTRU格上(算法6)，利用扩展后的抛弃采样技术构造NTRU格上的基于身份的签名方案，详见算法4-7。该方案的安全性依赖于所提出的NTRU格上的SIS问题，因而该方案在量子计算环境下仍然是安全的，并且其通信复杂度较低（详见表1-2）。
结论：将抛弃采样技术扩展到NTRU格上，并构造了NTRU格上首个基于身份的签名方案，该签名方案与普通格上的基于身份的签名方案相比，效率更高，公钥尺寸更小。
关键词： 身份;  签名;  NTRU格    
Abstract: Identity-based signature has become an important technique for lightweight authentication as soon as it was proposed in 1984. Thereafter, identity-based signature schemes based on the integer factorization problem and discrete logarithm problem were proposed one after another. Nevertheless, the rapid development of quantum computers makes them insecure. Recently, many efforts have been made to construct identity-based signatures over lattice assumptions against attacks in the quantum era. However, their efficiency is not very satisfactory. In this study, an efficient identity-based signature scheme is presented over the number theory research unit (NTRU) lattice assumption. The new scheme is more efficient than other lattice- and identity-based signature schemes. The new scheme proves to be unforgeable against the adaptively chosen message attack in the random oracle model under the hardness of the γ-shortest vector problem on the NTRU lattice.
Key words: Identity    Signature    Lattice    Number theory research unit (NTRU)
收稿日期: 2015-06-21 出版日期: 2016-02-02
CLC:  TP309.7  
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
Jia Xie
Yu-pu Hu
Jun-tao Gao
Wen Gao

引用本文:

Jia Xie, Yu-pu Hu, Jun-tao Gao, Wen Gao. Efficient identity-based signature over NTRU lattice. Front. Inform. Technol. Electron. Eng., 2016, 17(2): 135-142.

链接本文:

http://www.zjujournals.com/xueshu/fitee/CN/10.1631/FITEE.1500197    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2016/V17/I2/135

[1] Feng-he Wang, Chun-xiao Wang, Zhen-hua Liu. 标准模型下基于高效分级身份的格上加密方案[J]. Front. Inform. Technol. Electron. Eng., 2016, 17(8): 781-791.
[2] Shuang Tan, Yan Jia. NaEPASC：一种新颖且高效的云数据公开审计机制[J]. Front. Inform. Technol. Electron. Eng., 2014, 15(9): 794-804.
[3] Can Wang, Hong Liu, Xing Liu. 基于人手生物测量信息并利用颜色和深度数据的身份识别系统[J]. Front. Inform. Technol. Electron. Eng., 2014, 15(7): 525-536.