标准模型下的服务器辅助验证代理重签名方案

发布时间：2018-08-09 19:17

【摘要】：代理重签名具有转换签名的功能,在云存储、数据交换、跨域身份认证等领域有广泛的应用前景。目前大多数代理重签名方案需要复杂的双线性对运算,无法适用于计算能力较弱的低端计算设备。为了提高代理重签名的签名验证效率,该文给出了双向服务器辅助验证代理重签名的安全性定义,并提出一个高效的服务器辅助验证代理重签名方案,在标准模型下证明新方案在合谋攻击和选择消息攻击下是安全的。分析结果表明,新方案有效减少了双线性对的计算量,大大降低了签名验证算法的计算复杂度,在效率上优于已有的代理重签名方案。
[Abstract]:Proxy resignature has the function of transforming signature, which has a wide application prospect in cloud storage, data exchange, cross-domain identity authentication and so on. At present, most proxy resignature schemes require complex bilinear pairings and cannot be applied to low-end computing devices with weak computing power. In order to improve the efficiency of proxy resignature verification, the security definition of bidirectional server aided verification proxy resignature is given, and an efficient proxy resignature scheme is proposed. Under the standard model, it is proved that the new scheme is secure under collusion attack and selection message attack. The analysis results show that the new scheme can effectively reduce the computational complexity of the bilinear pairings and greatly reduce the computational complexity of the signature verification algorithm. The proposed scheme is more efficient than the existing proxy resignature schemes.
【作者单位】：西北师范大学计算机科学与工程学院;
【基金】：国家自然科学基金(61262057;61063041) 甘肃省科技计划(145RJDA325;1308RJYA039) 国家档案局科技项目(2014-X-33) 兰州市科技计划项目(2013-4-22;2014-1-256) 甘肃省高等学校科研项目(2015A-011) 西北师范大学青年教师科研能力提升计划(NWNU-LKQN-13-23)~~
【分类号】：TN918.4

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