标准模型下的单向可变门限代理重签名方案

发布时间：2018-04-17 02:00

本文选题：可变门限代理重签名 + 单向性　；参考：《计算机应用与软件》2014年12期

【摘要】：现有的绝大多数门限代理重签名方案只有一个门限值,但在实际应用中,门限代理重签名体制中联合重签名的代理者个数(门限值)取决于重签名消息的重要性。在Sherman等人提出的代理重签名方案的基础上,利用中国剩余定理提出一个在标准模型下可证明安全的单向可变门限代理重签名方案。分析结果表明,新方案在计算性Diffie-hellman假设下满足强壮性和不可伪造性;在效率上优于已有的同类签名方案。根据可变的门限值,每个代理者都能非交互地生成相应的重签名子密钥和验证公钥。
[Abstract]:Most of the existing threshold proxy resignature schemes have only one threshold value, but in practical applications, the number of agents (threshold values) of joint resignature in threshold proxy resignature schemes depends on the importance of the resignature message.Based on the proxy resignature scheme proposed by Sherman et al a unidirectional variable threshold proxy resignature scheme which can prove security under the standard model is proposed by using the Chinese residue theorem.The analysis results show that the new scheme satisfies the robustness and unforgeability under the computational Diffie-hellman assumption and is more efficient than the existing similar signature schemes.According to the variable threshold value, each agent can generate the corresponding resignature subkey and verify the public key ininteractively.
【作者单位】：天水师范学院物理与信息科学学院;西北师范大学计算机科学与工程学院;
【基金】：国家自然科学基金项目(61262057)
【分类号】：TN918.91

【共引文献】