对前向安全数字签名方案的分析与改进

针对基于椭圆曲线的前向安全数字签名方案存在较为严重的安全性漏洞问题, 给出一种针对该前向安全 数字签名方案进行伪造签名的方法, 对其合理性和正确性进行了验证, 并对该方案进行了改进。 验证结果证 明, 改进后的方案足以抵御所提出的伪造签名方法, 从而提高了安全性。

Analysis and Improvement of Forward-Secure Digital Signature Scheme

In order to solve the security problem of forward-secure digital signature scheme based on Elliptic Curve Cryptography,we analyzed a forward-secure digital signature scheme based on elliptic curve cryptosystem, and discovered some serious security vulnerability.We proposed a method that can forge signature to attack the forward-secure digital signature based on elliptic curve cryptosystem, and prove the rationality and correctness. We improved the scheme, and prove that the scheme of improvement can not forge signature by using the proposed method.