| 前向安全可公开验证签密方案 |
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| 引用本文： | 张串绒,张彤,肖国镇.前向安全可公开验证签密方案[J].计算机工程与应用,2006,42(21):103-105. |
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| 作者姓名： | 张串绒 张彤 肖国镇 |
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| 作者单位： | 空军工程大学电讯工程学院,西安,710077;西安电子科技大学综合业务网国家重点实验室,西安,710071;西北核技术研究所,西安,710024;西安电子科技大学综合业务网国家重点实验室,西安,710071 |
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| 基金项目： | 中国科学院资助项目;国家通信预研项目 |
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| 摘 要： | 签密是实现认证加密的一种新的密码技术,其效率远远高于传统“先签名再加密”认证加密方法。然而签密方案不能像传统方法那样同时提供前向安全性和可公开验证性。论文对两个重要签密方案Zheng的签密方案和SK签密方案进行了改进,给出了两个同时具有前向安全性和可公开验证性的签密方案。在改进方案中验证不需要接收者的私钥,传输中隐藏签密的承诺值,使得到发送者私钥的攻击者不可能得到本次及以前通信者的秘密信息。通过这些方法实现了可公开验证性和前向安全性。
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| 关 键 词： | 密码学 签密 认证加密 前向安全 公开验证 |
| 文章编号： | 1002-8331-（2006）21-0103-03 |
| 收稿时间： | 2006-02-01 |
| 修稿时间： | 2006-02-01 |
Public Verifiable Signcryption Schemes with Forward Secrecy |
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| Zhang Chuanrong,Zhang Tong,Xiao Guozhen.Public Verifiable Signcryption Schemes with Forward Secrecy[J].Computer Engineering and Applications,2006,42(21):103-105. |
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| Authors: | Zhang Chuanrong Zhang Tong Xiao Guozhen |
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| Abstract: | Signcryption,as a new cryptographic technique,its efficiency is much higher than that of the traditional method "signature-then-encryption".But signcryption schemes cannot provide forward secrecy and public verifiability as the traditional method does.For this reason,two important signcryption schemes,Zheng's scheme and SK's scheme are improved.As a result,two public verifiable signcryption schemes with forward secrecy are proposed.In the improved schemes,the verification process don't need the sender's private key,and the committee values are hided in transmission,so attacks who obtain the sender's private key can not get any secret information between these participates before this communication.By these methods the improved schemes achieve public verifiability and forward security simultaneity. |
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| Keywords: | cryptography authenticated encryption signcryption forward secrecy public verify |
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