Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (6): 89-94.doi: 10.1016/S1005-8885(09)60530-6

• Artificial Intelligence • 上一篇    下一篇

New concurrent digital signature scheme based on the computational Diffie-Hellman problem

秦文,周南润   

  1. Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China
  • 收稿日期:2010-02-08 修回日期:2010-07-19 出版日期:2010-12-30 发布日期:2010-12-06
  • 通讯作者: 周南润 E-mail:znr21@163.com
  • 基金资助:

    国家级.国家自然科学基金

New concurrent digital signature scheme based on the computational Diffie-Hellman problem

  1. Department of Electronic Information Engineering, Nanchang University, Nanchang 330031, China
  • Received:2010-02-08 Revised:2010-07-19 Online:2010-12-30 Published:2010-12-06

摘要:

Based on strong designated verifiers signatures, a new fair concurrent signature scheme is proposed. Compared with the previous concurrent signature schemes, even if a keystone must be chosen by the initial signer, the matching signer will easily get the keystone through an extraction algorithm. Due to the property of strong designate verifying, the initial signer couldn’t make use of the keystone prepared carefully to deceive the matching signer. Then the matching signer is able to participate actively the signature scheme. Besides, there aren’t bilinear operations in the keystone algorithm to deliver the keystone efficiently. Therefore the efficiency of our signature scheme is also improved.

关键词:

designated verifiers signature, fairness, concurrent signature, information security

Abstract:

Based on strong designated verifiers signatures, a new fair concurrent signature scheme is proposed. Compared with the previous concurrent signature schemes, even if a keystone must be chosen by the initial signer, the matching signer will easily get the keystone through an extraction algorithm. Due to the property of strong designate verifying, the initial signer couldn’t make use of the keystone prepared carefully to deceive the matching signer. Then the matching signer is able to participate actively the signature scheme. Besides, there aren’t bilinear operations in the keystone algorithm to deliver the keystone efficiently. Therefore the efficiency of our signature scheme is also improved.

Key words:

designated verifiers signature, fairness, concurrent signature, information security