摘要
签密就是能够在一个逻辑步骤内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。在椭圆曲线密码体制下,提出一个具有公开可验证性的和前向安全的签密方案,并分析了该方案的安全性,解决了签密方案设计上的一个公开问题。文中方案可以应用于许多特殊场合,如电子现金、匿名认证等,实现了前向安全性。
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 traditional ＂signature followed by encryption＂ approach. A signcryption scheme with forward security based on ECC is presented. The security of the scheme is also analyzed. An open problem on the design of signcryption is solved. With all the feature, this work is attractive for many specialized applications, such as electronic cash, anonymity authentication, and achieves forward security.
出处
《计算机技术与发展》
2007年第12期132-135,共4页
Computer Technology and Development
基金
安徽省自然科学基金项目(KJ2007B043)
安徽省高校青年教师资助项目(2007JQL122)
关键词
签密方案
椭圆曲线密码体制
数字签名
前向安全性
公开可验证性
signcrption scheme
elliptic curve cryptosystern
digital signature
forward .security
public verifiability
