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  multi-signature
    Security Analysis of Some Proxy Multi-Signature Schemes Based on Elliptic Curve Cryptosystem
    基于椭圆曲线的代理多签名方案的安全性分析
短句来源
    Two forgery attacks presented on a proxy multi-signature scheme based on elliptic curves discrete logarithm problem proposed by Ji and Li.
    对Ji和Li的基于椭圆曲线离散对数问题的代理多签名体制提出了两个伪造攻击。
短句来源
    Cryptanalysis of a proxy multi-signature scheme
    一种代理多签名体制的安全性分析
短句来源
    Lee,et al. 's strong proxy signature scheme and proxy multi-signature scheme are reviewed. Sun,et al.
    回顾了Lee等人提出的强代理签名方案和代理多签名方案以及Sun等人提出对其强不可伪造性的分析。
短句来源
    Furthermore, a new modified and secure proxy multi-signature scheme based on elliptic curves discrete logarithm problem were proposed.
    并对Ji和Li的代理多签名体制进行了改进,提出了新的安全的基于椭圆曲线离散对数问题的代理多签名体制。
短句来源
更多       
  multi-signature
    Security Analysis of Some Proxy Multi-Signature Schemes Based on Elliptic Curve Cryptosystem
    基于椭圆曲线的代理多签名方案的安全性分析
短句来源
    Two forgery attacks presented on a proxy multi-signature scheme based on elliptic curves discrete logarithm problem proposed by Ji and Li.
    对Ji和Li的基于椭圆曲线离散对数问题的代理多签名体制提出了两个伪造攻击。
短句来源
    Cryptanalysis of a proxy multi-signature scheme
    一种代理多签名体制的安全性分析
短句来源
    Lee,et al. 's strong proxy signature scheme and proxy multi-signature scheme are reviewed. Sun,et al.
    回顾了Lee等人提出的强代理签名方案和代理多签名方案以及Sun等人提出对其强不可伪造性的分析。
短句来源
    Furthermore, a new modified and secure proxy multi-signature scheme based on elliptic curves discrete logarithm problem were proposed.
    并对Ji和Li的代理多签名体制进行了改进,提出了新的安全的基于椭圆曲线离散对数问题的代理多签名体制。
短句来源
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This paper presents two new digital multisignature schemes based on the Schnorr scheme, including two types: simultaneous signature and sequential signature, describes respectively the key generation,multisignature generation and multisignature verification of the two multisignature schemes and points out they are especially efficient to multisignature generation. Moreover the authors discuss the security of the sequential digital multisignature scheme and prove that it is as secure as the Schnorr scheme against...

This paper presents two new digital multisignature schemes based on the Schnorr scheme, including two types: simultaneous signature and sequential signature, describes respectively the key generation,multisignature generation and multisignature verification of the two multisignature schemes and points out they are especially efficient to multisignature generation. Moreover the authors discuss the security of the sequential digital multisignature scheme and prove that it is as secure as the Schnorr scheme against passive attacks by using the computational complexity theory.

本文给出了基于Schnorr体制的新的数字多签名体制,包括同时签名和顺序签名两种类型.文中分别描述了这两个多签名体制的密钥生成、多签名生成和多签名验证过程,指出它们对多签名生成的有效性.此外我们还讨论了顺序签名类型的多签名体制的安全性,利用计算复杂度理论证明了它对抗被动攻击同Schnorr体制是同样安全的.

A weakness in a multisignature scheme designed by E.Chida is pointed out here, this scheme is not strong enough to resist the internal attack. And an improved multisignature scheme based on the oneway algebraic homomorphism is presented and its security level is as same as DSA signature scheme at least.

指出了E.Chida等设计的多签名体制所存在的缺陷,即该体制不能抵抗内部攻击,并在单向环同态的基础上提出了一种改进的多签名体制.其安全强度不亚于改进的DSA,极大的提高了原有CNOS多签名方案的安全性.

Digital signature scheme is an important research topic in cryptography.Proxy signature is a special digital signature.It allows a signer,called an original signer,to delegate his/her signing capability to another person,called a proxy signer,to create a signature on behalf of him/her when he/she cannot sign a message for some reason.Lee,et al.'s strong proxy signature scheme and proxy multi-signature scheme are reviewed.Sun,et al.'s analyze on strong unforgeability is mentioned.A modified strong proxy signature...

Digital signature scheme is an important research topic in cryptography.Proxy signature is a special digital signature.It allows a signer,called an original signer,to delegate his/her signing capability to another person,called a proxy signer,to create a signature on behalf of him/her when he/she cannot sign a message for some reason.Lee,et al.'s strong proxy signature scheme and proxy multi-signature scheme are reviewed.Sun,et al.'s analyze on strong unforgeability is mentioned.A modified strong proxy signature scheme with strong unforgeability,which will efficiently prevent an original signer from malicious attacks is presented.The proposed idea is extended into proxy multi-signature schemes.

数字签名是密码学的重要问题之一 ;代理签名是一种特殊的数字签名 ,它是指当某个签名人 (原始签名人 )由于某种原因不能签名时 ,将签名权委托给他人 (代理签名人 )替自己行使签名权。回顾了Lee等人提出的强代理签名方案和代理多签名方案以及Sun等人提出对其强不可伪造性的分析。在强代理签名方案的基础上 ,提出了改进的强代理签名方案 ,该方案具有强不可伪造性 ,从而可以有效地防止原始签名人对代理签名人进行恶意攻击 ,并将其推广到代理多签名方案中

 
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