Improving an efficient ID-based RSA multisignature
Improving an efficient ID-based RSA multisignature
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DOI：
10.1007/s12652-011-0093-8
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发表时间：
2011-11
影响因子：
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通讯作者：
Fuw-Yi Yang;Jeng-Hung Lo;Cai-Ming Liao
中科院分区：
文献类型：
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作者：
Fuw-Yi Yang;Jeng-Hung Lo;Cai-Ming Liao
基于Shamir的基于身份的签名（IBS）方案，提出了一种有效的RSA多重签名方案。尽管是多重签名，该方案的签名长度与Shamir的IBS方案相当。此外，仅将1 -1模乘的一个/两个额外增量添加到验证/签名时间，其中yl表示签名者的数目。这大大减少了计算量和通信成本相比，以前提出的多重签名方案。然而，这项研究发现，在以前的计划的安全漏洞。本文分析并指出了这些漏洞的来源，并对原方案提出了改进意见，保留了原方案的优点，提高了原方案的安全性。该协议不仅具有安全性，而且节省了计算资源和通信带宽，适合于无线通信。
Researchers have proposed an effective RSA multisignature scheme based on Shamir’s identity-based signature (IBS) scheme. Despite being a multisignature, the proposed scheme’s signature length is comparable to Shamir’s IBS scheme. Also, only one/two extra increments ofl-1 modular multiplications are added to the verification/signature time, wherebylrepresents the number of signers. This greatly reduced the computational load and communication costs compared to the previously proposed multisignature schemes. However, this study discovers security loopholes in the previous schemes. This study analyzes and highlights the loopholes’ origins, and it proposes improvements to the original schemes, preserves the scheme’s merits and enhances their security. The resultant protocol is thus suitable for wireless communications because it not only possesses security but also saves computation resources and communication bandwidth.