一种基于离散对数的强代理签名方案的分析与改进
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摘要
详细分析现有的基于离散对数问题的强代理签名方案,发现方案存在不能抵抗公钥替换攻击的缺陷,并给出攻击方法。基于离散对数的困难性和Schnorr体制,通过签名算法的改进,给出一种新的强代理签名方案。重点分析新方案可以抵抗公钥替换攻击,可以对代理签名的范围和签名时间进行限制等。该方案的实用性及安全性更强。
In this paper we analyse in detail the existing discrete logarithm problem-based strong proxy signature schemes,and find that these schemes have the defects of not being able to resist the public key substitution attack,and we provide the attacking methods as well.Based on the difficulty of discrete logarithm and Schnorr system,we present a new strong proxy signature scheme by improving the signature algorithm. We elaborately analyse the new scheme in its capabilities of resisting the public key substitution attack and limiting the range of proxy signature and the signature time. The new scheme has stronger practicability and security.
In this paper we analyse in detail the existing discrete logarithm problem-based strong proxy signature schemes,and find that these schemes have the defects of not being able to resist the public key substitution attack,and we provide the attacking methods as well.Based on the difficulty of discrete logarithm and Schnorr system,we present a new strong proxy signature scheme by improving the signature algorithm. We elaborately analyse the new scheme in its capabilities of resisting the public key substitution attack and limiting the range of proxy signature and the signature time. The new scheme has stronger practicability and security.
引文
[1]Mambo M,Usuda K,Okamoto E.Proxy Signature:Delegation of the Power to Sign Messages[J].IEICE Transactions on Fundamentals,1996,E79-A(9):1338-1353.
[2]Lee B,Kim H,Kim K.Strong Proxy Signature and its Applications[C]//SCIS2001,2001:603-608.
[3]胡国政,韩兰胜,王展青.无证书强代理签名方案的密码学分析及改进[J].北京邮电大学学报,2011,34(5):115-118.
[4]王晚,杜伟章.一种基于离散对数的指名强代理签名方案[J].微计算机信息,2011(9):181-182.
[5]杨旭东.基于改进的可验证的强前向安全环签名方案研究[J].计算机应用与软件,2013,30(4):319-322.
[6]Sun Hungmin,Hsieh Bintsan.On the security of some proxy signature schemes[EB/OL].http://eprint.iacr.org.2003.
[7]杨淑娣,姚正安.一个改进的强代理签名方案[J].计算机应用研究,2004,21(8):119-121.
[8]黄梅娟,张建中.新的多代理签名和多代理多签名方案[J].计算机工程与应用,2010,46(1):74-76.
[9]Schnorr C P.Efficient signature generation by smart cards[J].Journal of Cryptology,1991,4(3):161-174.
[10]Hwang S J,Chen C C.A new multi proxy multisignature scheme[C]//National Computer Symposium:Information Security,2004.
[2]Lee B,Kim H,Kim K.Strong Proxy Signature and its Applications[C]//SCIS2001,2001:603-608.
[3]胡国政,韩兰胜,王展青.无证书强代理签名方案的密码学分析及改进[J].北京邮电大学学报,2011,34(5):115-118.
[4]王晚,杜伟章.一种基于离散对数的指名强代理签名方案[J].微计算机信息,2011(9):181-182.
[5]杨旭东.基于改进的可验证的强前向安全环签名方案研究[J].计算机应用与软件,2013,30(4):319-322.
[6]Sun Hungmin,Hsieh Bintsan.On the security of some proxy signature schemes[EB/OL].http://eprint.iacr.org.2003.
[7]杨淑娣,姚正安.一个改进的强代理签名方案[J].计算机应用研究,2004,21(8):119-121.
[8]黄梅娟,张建中.新的多代理签名和多代理多签名方案[J].计算机工程与应用,2010,46(1):74-76.
[9]Schnorr C P.Efficient signature generation by smart cards[J].Journal of Cryptology,1991,4(3):161-174.
[10]Hwang S J,Chen C C.A new multi proxy multisignature scheme[C]//National Computer Symposium:Information Security,2004.