| 基于身份的密钥隔离聚合签名 |
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| 引用本文： | 寻甜甜,李朦,段绍霞,郝蓉. 基于身份的密钥隔离聚合签名[J]. 青岛大学学报(自然科学版), 2014, 0(2): 45-49 |
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| 作者姓名： | 寻甜甜 李朦 段绍霞 郝蓉 |
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| 作者单位： | [1]青岛大学信息工程学院,青岛266071 [2]山东省计算机网络重点实验室,济南266014 |
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| 基金项目： | 国家自然科学基金（批准号：61272425）资助;青岛市科技计划（批准号：121-4-2-（16）-jch,121-4-2-（14）-jch,1314-151-jch）资助;山东省计算机网络重点实验室开放课题（批准号：SDKLCN-2013-03）资助. |
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| 摘 要： | 针对基于身份的聚合签名系统中密钥泄漏的问题，给出了基于身份的密钥隔离聚合签名的概念，同时提出具体的基于身份的密钥隔离聚合签名方案。该方案运用密钥隔离技术实现对每个签名者的私钥定时更新，在签名者密钥泄漏不可避免的情况下，减少了密钥泄漏带来的危害。此方案满足密钥隔离安全、强密钥隔离安全和安全密钥更新等性质，并且验证时只需要常数个双线性配对运算，大大提高了签名的验证效率。
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| 关 键 词： | 密钥隔离 基于身份的聚合签名 基于身份的密钥隔离聚合签名 双线性映射 |
Identity-based and Key-insulated Aggregate Signature |
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| XUN Tian-tian,LI Meng,DUAN Shao-xia,HAO Rong. Identity-based and Key-insulated Aggregate Signature[J]. Journal of Qingdao University(Natural Science Edition), 2014, 0(2): 45-49 |
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| Authors: | XUN Tian-tian LI Meng DUAN Shao-xia HAO Rong |
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| Affiliation: | 1. College of Information Engineering, Qingdao University, Qingdao 266071, China; 2. Shandong provincial Key Laboratory of Computer Network, Jinan 266014, China) |
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| Abstract: | Aiming at solving the problem of secret-key exposures in the identity-based aggregate signature systems, the concept of identity-based and key-insulated aggregate signature is proposed, and a specific scheme is presented. In this scheme, the private key of each signer can be updated regularly by the key-insulated technology. This can reduce risks under the condition that the secret-key exposure is inevitable. The proposed scheme has the properties of key-insulated security, strong key-insulated security and secure key updates. Only constant bilinear paring operations are required in verification, so the efficiency of signature verification has been improved greatly. |
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| Keywords: | key-insulated identity-based aggregate signature identity-based and key-insulated aggregatesignature bilinear maps |
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