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:针对不可否认L-L-C-Z门限代理签密协议中存在的安全缺陷，提出了一个改进的门限代理签密协议.通过 对L-L-C-Z门限代理签密协议的密码分析，利用接收方修改公钥的方法，计算出任意消息的有效伪造签密结果.利 用类似于缩短的数字签名标准(SDSS)的安全技术，以及通过公钥验证签密结果的技术，给出一个新的改进协议.安 全分析结果表明，与L-L-C-Z门限代理签密协议相比，该改进门限代理签密协议能够承受接收方公钥替换攻击.改进的门限代理签密协议利用接收方公钥而不是私钥来验证签密结果，其验证过程能向第三方公开.

编程艺术竞赛

Java初学者应该认识到的30个问题，我看了后感触颇深，放上来供大家一起参考，学习。-Java for beginners should be aware of the 30 questions, I have deep feelings after reading, Fang Shanglai reference for everyone to learn.

数字信号处理 数字信号处理-digital signal processing, digital signal processing, digital signal processing

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linux C编程 参考手册 C语言编程必备-linux C programming language programming an essential reference manual for C

一个餐饮企业管理系统的使用手册。 项目介绍： 餐饮企业内部管理系统是与武汉市餐饮企业web平台(江城美食网)相对应的一套涵盖前台经营管理、客户分析、财务管理、库存管理、吧台管理、后台管理6个子系统的餐饮企业内部信息化建设的解决方案。该系统除了具备普通餐饮企业管理的功能之外，实现了于web平台的对接和信息同步，使得江城美食网上的订餐信息能够及时地反馈到餐饮企业内部，以实现利用信息技术、最大程度地提高餐饮企业的运作效率的目的。-an enterprise management system manual. Introduction : Food internal management system and the Wuhan City Food enterprise web platform (Jiangcheng Food Network) corresponding to a set of cover before Taiwan business management, customer analysis, financial management, inventory management, management of the bar, background management of the six sub-systems within the enterprise Food information technology solutions. In addition, the System with ordinary Food enterprise management functions, the realization of the web platform in the docking and information synchronization, Jiangcheng cuisine makes the Internet places the order for the meal to timely information feedback to the catering enterprises to realize the use of information technology, to the greatest extent Food e

学生成绩管理 用PowerBuilder编译的程序!可用于学校学生成绩管理-student performance compiler with PowerBuilder management procedures! For students in a school performance management

一个求最长子序列的辕马~~~ 要的自己下!~~ 我也是无奈啊-a son for the longest sequence of shaft horse ~ ~ ~ themselves to the next! ~ ~ I was helpless ah

英文 网络课件 Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith RossAddison-Wesley, July 2004. -English Courseware Computer Networking: A Top Down Approach Featuring the Internet, 3rd edition. Jim Kurose, Keith Ross Addison-Wesley, July 2004.