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| 无可信中心的自认证多代理签密方案 | |
| 引用本文： | 俞惠芳,赵海兴,王之仓,乔小妮.无可信中心的自认证多代理签密方案[J].计算机工程与科学,2010,32(8):14-16. |
| 作者姓名： | 俞惠芳 赵海兴 王之仓 乔小妮 |
| 作者单位： | 1. 青海师范大学计算机系,青海,西宁,810008 2. 青海师范大学数学与信息科学系,青海,西宁,810008 3. 甘肃省人民医院网络中心,甘肃,兰州,730000 |
| 基金项目： | 国家自然科学基金资助项目，青海省教育厅软课题资助项目，青海省重点课程《现代操作系统》建设资助项目 |
| 摘 要： | 本文将自认证签密的概念引入到多代理签名中,构造了一种新的无可信中心的自认证多代理签密方案,其安全性依赖于有限域上离散对数问题的难解性。新方案不仅具有自认证签密的优点,而且原始签密人授权给一组代理签密人,授权代理签密组的所有成员一起可以代替原始签密人行使签密权。所提方案算法复杂度低、通信效率高,是一个安全实用的多代理签密方案。 |
| 关 键 词： | 自认证签密 多代理密签 多代理签名 有限域上离散对数问题 |
| 收稿时间： | 2009-06-09 |
| 修稿时间： | 2009-09-21 |
A Self-Certified Multi-Proxy Signcryption Scheme Without Trustworthy System Authority |
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| YU Hui-fang,ZHAO Hai-xing,WANG Zhi-cang,QIAO Xiao-ni.A Self-Certified Multi-Proxy Signcryption Scheme Without Trustworthy System Authority[J].Computer Engineering & Science,2010,32(8):14-16. | |
| Authors: | YU Hui-fang ZHAO Hai-xing WANG Zhi-cang QIAO Xiao-ni |
| Affiliation: | YU Hui-fang1,ZHAO Hai-xing2,WANG Zhi-cang1,QIAO Xiao-ni3(1.Department of Computer Science,Qinghai Normal University,Xining 810008,2.Department of Mathematics and Information Science,3.Network Center,Gansu Provincial People's Hospital,Lanzhou 730000,China) |
| Abstract: | By applying the concept of self-certified signcryption to multi-proxy signature,a new self-certified multi-proxy signcryption scheme without trustworthy system authority is constructed,and its security relies on the hardness of discrete logarithm problems in the finite field. The new scheme has the merits of self-certified signcryption; moreover,an original signcryter can authorize a group of proxy signcrypters,and the multi-proxy signcryption is generated by the cooperation of all the proxy signcrypters. T... |
| Keywords: | self-certified signcryption multi-proxy signcryption multi-proxy signature discrete logarithm problem in finite field |
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