一个新的具有指定接收者的签密方案  

A NEW SIGNCRYPTION SCHEME WITH THE SPECIFIED RECEIVER

作　　者：王丽君[1] 周萍萍[1] 

机构地区：[1]鞍山科技大学计算机科学与工程学院,辽宁鞍山114044

出　　处：《计算机应用与软件》2006年第5期134-136,共3页Computer Applications and Software

摘　　要：签密就是能够在一个逻辑步骤内同时完成数字签名和加密两项功能,比传统的“先签名后加密”有更高的效率。在保证签密算法安全性的前提下,提出了一种新的签密方案,该方案减少了签名验证中对s-1mod n的计算,进一步加快了运算速度,缩短了数据传输的时间,同时方案中的加密技术可以灵活选取。该方案具有有向性,只有特定的接收方才可以由签名恢复被签消息,验证签名的有效性。Signcryption is a new cryptographic technology, which simultaneously fulfills both the function of digital signature and public key encryption in a logically single step, and more efficient than the traditional ＂signature followed by encryption＂ approach. In this paper we propose a new algorithm which not is used to compute s^-1 mod n. It shorts the time for data transmission, makes operation accelerate. At the same time various encryptions can be chosen flexibly in the scheme. In the scheme the signed message can be reverted only by appointed receiver because of its orientability.

关 键 词：椭圆曲线密码体制 离散对数 签密方案 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TN943.3[自动化与计算机技术—计算机科学与技术]