|
| 摘要: |
| 给出了前向安全多重签名的形式化安全性模型，并提出了一个可证安全的前向安全多重签名方案。在该方案中，即使所有参与多重签名成员的当前密钥泄漏，所有以前时间段的签名也是有效的。证明了方案是标准模型下安全的。 |
| 关键词: 前向安全性 数字签名 多重签名 可证安全性 标准模型 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60703089 (国家自然科学基金); the Shandong Provincial Natural Science Foundation of China under Grant Nos.ZR2009GQ008, ZR2010FQ019 (山东省自然科学基金); the Science and Technology Project of Provincial Education Department of Shandong Province of China under Grant No.J08LJ02 (山东省教育厅科技计划); the Scientific Research Foundation for the Excellent Middle-Aged and Youth Scientists of Shandong Province of China under Grant No.2008BS01011 (山东省优秀中青年科学家科研奖励基金) |
|
| Forward-Secure Multi-Signature in the Standard Model: Security Model and Construction |
|
YU Jia, HAO Rong, KONG Fan-Yu, CHENG Xiang-Guo, GUO Xiang-Fa
|
| Abstract: |
| The formal security model of forward-secure multi-signature is examined and a forward-secure multi-signature scheme with provable security is proposed. Even if the current secret keys of all the signers are exposed, all the signatures pertaining to previous periods are still valid in this scheme. The presented scheme has proven to be secure in the standard model. |
| Key words: forward security digital signature multi-signature provable security standard model |
